Articles | Volume 20, issue 7
https://doi.org/10.5194/bg-20-1277-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-20-1277-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
05 Apr 2023
Research article |
| 05 Apr 2023
| 05 Apr 2023
Ecological divergence of a mesocosm in an eastern boundary upwelling system assessed with multi-marker environmental DNA metabarcoding
Markus A. Min
Monterey Bay Aquarium Research Institute, Moss Landing, CA, USA
School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA, USA
David M. Needham
Monterey Bay Aquarium Research Institute, Moss Landing, CA, USA
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Sebastian Sudek
Monterey Bay Aquarium Research Institute, Moss Landing, CA, USA
Nathan Kobun Truelove
Monterey Bay Aquarium Research Institute, Moss Landing, CA, USA
Kathleen J. Pitz
Monterey Bay Aquarium Research Institute, Moss Landing, CA, USA
Gabriela M. Chavez
Monterey Bay Aquarium Research Institute, Moss Landing, CA, USA
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Camille Poirier
Monterey Bay Aquarium Research Institute, Moss Landing, CA, USA
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Bente Gardeler
Monterey Bay Aquarium Research Institute, Moss Landing, CA, USA
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Elisabeth von der Esch
Institute of Hydrochemistry, Technical University of Munich, Munich, Germany
Andrea Ludwig
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Ulf Riebesell
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Alexandra Z. Worden
Monterey Bay Aquarium Research Institute, Moss Landing, CA, USA
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Francisco P. Chavez
CORRESPONDING AUTHOR
Monterey Bay Aquarium Research Institute, Moss Landing, CA, USA
Related authors
No articles found.
Philipp Suessle, Jan Taucher, Silvan Urs Goldenberg, Moritz Baumann, Kristian Spilling, Andrea Noche-Ferreira, Mari Vanharanta, and Ulf Riebesell
Biogeosciences, 22, 71–86, https://doi.org/10.5194/bg-22-71-2025, https://doi.org/10.5194/bg-22-71-2025, 2025
Short summary
Short summary
Ocean alkalinity enhancement (OAE) is a negative emission technology which may alter marine communities and the particle export they drive. Here, impacts of carbonate-based OAE on the flux and attenuation of sinking particles in an oligotrophic plankton community are presented. Whilst biological parameters remained unaffected, abiotic carbonate precipitation occurred. Among counteracting OAE’s efficiency, it influenced mineral ballasting and particle sinking velocities, requiring monitoring.
Laura Marín-Samper, Javier Arístegui, Nauzet Hernández-Hernández, and Ulf Riebesell
Biogeosciences, 21, 5707–5724, https://doi.org/10.5194/bg-21-5707-2024, https://doi.org/10.5194/bg-21-5707-2024, 2024
Short summary
Short summary
This study exposed a natural community to two non-CO2-equilibrated ocean alkalinity enhancement (OAE) deployments using different minerals. Adding alkalinity in this manner decreases dissolved CO2, essential for photosynthesis. While photosynthesis was not suppressed, bloom formation was mildly delayed, potentially impacting marine food webs. The study emphasizes the need for further research on OAE without prior equilibration and on its ecological implications.
Niels Suitner, Giulia Faucher, Carl Lim, Julieta Schneider, Charly A. Moras, Ulf Riebesell, and Jens Hartmann
Biogeosciences, 21, 4587–4604, https://doi.org/10.5194/bg-21-4587-2024, https://doi.org/10.5194/bg-21-4587-2024, 2024
Short summary
Short summary
Recent studies described the precipitation of carbonates as a result of alkalinity enhancement in seawater, which could adversely affect the carbon sequestration potential of ocean alkalinity enhancement (OAE) approaches. By conducting experiments in natural seawater, this study observed uniform patterns during the triggered runaway carbonate precipitation, which allow the prediction of safe and efficient local application levels of OAE scenarios.
Silvan Urs Goldenberg, Ulf Riebesell, Daniel Brüggemann, Gregor Börner, Michael Sswat, Arild Folkvord, Maria Couret, Synne Spjelkavik, Nicolás Sánchez, Cornelia Jaspers, and Marta Moyano
Biogeosciences, 21, 4521–4532, https://doi.org/10.5194/bg-21-4521-2024, https://doi.org/10.5194/bg-21-4521-2024, 2024
Short summary
Short summary
Ocean alkalinity enhancement (OAE) is being evaluated as a carbon dioxide removal technology for climate change mitigation. With an experiment on species communities, we show that larval and juvenile fish can be resilient to the resulting perturbation of seawater. Fish may hence recruit successfully and continue to support fisheries' production in regions of OAE. Our findings help to establish an environmentally safe operating space for this ocean-based solution.
Sebastian I. Cantarero, Edgart Flores, Harry Allbrook, Paulina Aguayo, Cristian A. Vargas, John E. Tamanaha, J. Bentley C. Scholz, Lennart T. Bach, Carolin R. Löscher, Ulf Riebesell, Balaji Rajagopalan, Nadia Dildar, and Julio Sepúlveda
Biogeosciences, 21, 3927–3958, https://doi.org/10.5194/bg-21-3927-2024, https://doi.org/10.5194/bg-21-3927-2024, 2024
Short summary
Short summary
Our study explores lipid remodeling in response to environmental stress, specifically how cell membrane chemistry changes. We focus on intact polar lipids in a phytoplankton community exposed to diverse stressors in a mesocosm experiment. The observed remodeling indicates acyl chain recycling for energy storage in intact polar lipids during stress, reallocating resources based on varying growth conditions. This understanding is essential to grasp the system's impact on cellular pools.
Giulia Faucher, Mathias Haunost, Allanah Joy Paul, Anne Ulrike Christiane Tietz, and Ulf Riebesell
EGUsphere, https://doi.org/10.5194/egusphere-2024-2201, https://doi.org/10.5194/egusphere-2024-2201, 2024
Short summary
Short summary
OAE is being evaluated for its capacity to absorb atmospheric CO2 in the ocean, storing it long-term to mitigate climate change. As researchers plan for field tests to gain practical insights into OAE, sharing knowledge on its environmental impact on marine ecosystems is urgent. Our study examined NaOH-induced alkalinity increases on Emiliania huxleyi, a key coccolithophore species. We found that to prevent negative impacts on this species, the increase in ΔTA should not exceed 600 µmol kg-1.
Laura Marín-Samper, Javier Arístegui, Nauzet Hernández-Hernández, Joaquín Ortiz, Stephen D. Archer, Andrea Ludwig, and Ulf Riebesell
Biogeosciences, 21, 2859–2876, https://doi.org/10.5194/bg-21-2859-2024, https://doi.org/10.5194/bg-21-2859-2024, 2024
Short summary
Short summary
Our planet is facing a climate crisis. Scientists are working on innovative solutions that will aid in capturing the hard to abate emissions before it is too late. Exciting research reveals that ocean alkalinity enhancement, a key climate change mitigation strategy, does not harm phytoplankton, the cornerstone of marine ecosystems. Through meticulous study, we may have uncovered a positive relationship: up to a specific limit, enhancing ocean alkalinity boosts photosynthesis by certain species.
Aaron Ferderer, Kai G. Schulz, Ulf Riebesell, Kirralee G. Baker, Zanna Chase, and Lennart T. Bach
Biogeosciences, 21, 2777–2794, https://doi.org/10.5194/bg-21-2777-2024, https://doi.org/10.5194/bg-21-2777-2024, 2024
Short summary
Short summary
Ocean alkalinity enhancement (OAE) is a promising method of atmospheric carbon removal; however, its ecological impacts remain largely unknown. We assessed the effects of simulated silicate- and calcium-based mineral OAE on diatom silicification. We found that increased silicate concentrations from silicate-based OAE increased diatom silicification. In contrast, the enhancement of alkalinity had no effect on community silicification and minimal effects on the silicification of different genera.
David González-Santana, María Segovia, Melchor González-Dávila, Librada Ramírez, Aridane G. González, Leonardo J. Pozzo-Pirotta, Veronica Arnone, Victor Vázquez, Ulf Riebesell, and J. Magdalena Santana-Casiano
Biogeosciences, 21, 2705–2715, https://doi.org/10.5194/bg-21-2705-2024, https://doi.org/10.5194/bg-21-2705-2024, 2024
Short summary
Short summary
In a recent experiment off the coast of Gran Canaria (Spain), scientists explored a method called ocean alkalinization enhancement (OAE), where carbonate minerals were added to seawater. This process changed the levels of certain ions in the water, affecting its pH and buffering capacity. The researchers were particularly interested in how this could impact the levels of essential trace metals in the water.
Librada Ramírez, Leonardo J. Pozzo-Pirotta, Aja Trebec, Víctor Manzanares-Vázquez, José L. Díez, Javier Arístegui, Ulf Riebesell, Stephen D. Archer, and María Segovia
EGUsphere, https://doi.org/10.5194/egusphere-2024-847, https://doi.org/10.5194/egusphere-2024-847, 2024
Short summary
Short summary
We studied the potential effects of increasing ocean alkalinity on a natural plankton community in subtropical waters of the Atlantic near Gran Canaria, Spain. Alkalinity is the capacity of water to resist acidification and plankton are usually microscopic plants (phytoplankton) and animals (zooplankton), often less than 2,5 cm in length. This study suggests that increasing ocean alkalinity did not have a significant negative impact on the studied plankton community.
Allanah Joy Paul, Mathias Haunost, Silvan Urs Goldenberg, Jens Hartmann, Nicolás Sánchez, Julieta Schneider, Niels Suitner, and Ulf Riebesell
EGUsphere, https://doi.org/10.5194/egusphere-2024-417, https://doi.org/10.5194/egusphere-2024-417, 2024
Short summary
Short summary
Ocean alkalinity enhancement (OAE) is being assessed for its potential to absorb atmospheric CO2 and store it for a long time. OAE still needs comprehensive assessment of its safety and effectiveness. We studied an idealised OAE application in a natural low nutrient ecosystem over one month. Our results showed that biogeochemical functioning remained mostly stable, but that the long-term capability for storing carbon may be limited at high alkalinity concentration.
Xiaoke Xin, Giulia Faucher, and Ulf Riebesell
Biogeosciences, 21, 761–772, https://doi.org/10.5194/bg-21-761-2024, https://doi.org/10.5194/bg-21-761-2024, 2024
Short summary
Short summary
Ocean alkalinity enhancement (OAE) is a promising approach to remove CO2 by accelerating natural rock weathering. However, some of the alkaline substances contain trace metals which could be toxic to marine life. By exposing three representative phytoplankton species to Ni released from alkaline materials, we observed varying responses of phytoplankton to nickel concentrations, suggesting caution should be taken and toxic thresholds should be avoided in OAE with Ni-rich materials.
Ulf Riebesell, Daniela Basso, Sonja Geilert, Andrew W. Dale, and Matthias Kreuzburg
State Planet, 2-oae2023, 6, https://doi.org/10.5194/sp-2-oae2023-6-2023, https://doi.org/10.5194/sp-2-oae2023-6-2023, 2023
Short summary
Short summary
Mesocosm experiments represent a highly valuable tool in determining the safe operating space of ocean alkalinity enhancement (OAE) applications. By combining realism and biological complexity with controllability and replication, they provide an ideal OAE test bed and a critical stepping stone towards field applications. Mesocosm approaches can also be helpful in testing the efficacy, efficiency and permanence of OAE applications.
Moritz Baumann, Allanah Joy Paul, Jan Taucher, Lennart Thomas Bach, Silvan Goldenberg, Paul Stange, Fabrizio Minutolo, and Ulf Riebesell
Biogeosciences, 20, 2595–2612, https://doi.org/10.5194/bg-20-2595-2023, https://doi.org/10.5194/bg-20-2595-2023, 2023
Short summary
Short summary
The sinking velocity of marine particles affects how much atmospheric CO2 is stored inside our oceans. We measured particle sinking velocities in the Peruvian upwelling system and assessed their physical and biochemical drivers. We found that sinking velocity was mainly influenced by particle size and porosity, while ballasting minerals played only a minor role. Our findings help us to better understand the particle sinking dynamics in this highly productive marine system.
Kristian Spilling, Jonna Piiparinen, Eric P. Achterberg, Javier Arístegui, Lennart T. Bach, Maria T. Camarena-Gómez, Elisabeth von der Esch, Martin A. Fischer, Markel Gómez-Letona, Nauzet Hernández-Hernández, Judith Meyer, Ruth A. Schmitz, and Ulf Riebesell
Biogeosciences, 20, 1605–1619, https://doi.org/10.5194/bg-20-1605-2023, https://doi.org/10.5194/bg-20-1605-2023, 2023
Short summary
Short summary
We carried out an enclosure experiment using surface water off Peru with different additions of oxygen minimum zone water. In this paper, we report on enzyme activity and provide data on the decomposition of organic matter. We found very high activity with respect to an enzyme breaking down protein, suggesting that this is important for nutrient recycling both at present and in the future ocean.
Jens Hartmann, Niels Suitner, Carl Lim, Julieta Schneider, Laura Marín-Samper, Javier Arístegui, Phil Renforth, Jan Taucher, and Ulf Riebesell
Biogeosciences, 20, 781–802, https://doi.org/10.5194/bg-20-781-2023, https://doi.org/10.5194/bg-20-781-2023, 2023
Short summary
Short summary
CO2 can be stored in the ocean via increasing alkalinity of ocean water. Alkalinity can be created via dissolution of alkaline materials, like limestone or soda. Presented research studies boundaries for increasing alkalinity in seawater. The best way to increase alkalinity was found using an equilibrated solution, for example as produced from reactors. Adding particles for dissolution into seawater on the other hand produces the risk of losing alkalinity and degassing of CO2 to the atmosphere.
André Valente, Shubha Sathyendranath, Vanda Brotas, Steve Groom, Michael Grant, Thomas Jackson, Andrei Chuprin, Malcolm Taberner, Ruth Airs, David Antoine, Robert Arnone, William M. Balch, Kathryn Barker, Ray Barlow, Simon Bélanger, Jean-François Berthon, Şükrü Beşiktepe, Yngve Borsheim, Astrid Bracher, Vittorio Brando, Robert J. W. Brewin, Elisabetta Canuti, Francisco P. Chavez, Andrés Cianca, Hervé Claustre, Lesley Clementson, Richard Crout, Afonso Ferreira, Scott Freeman, Robert Frouin, Carlos García-Soto, Stuart W. Gibb, Ralf Goericke, Richard Gould, Nathalie Guillocheau, Stanford B. Hooker, Chuamin Hu, Mati Kahru, Milton Kampel, Holger Klein, Susanne Kratzer, Raphael Kudela, Jesus Ledesma, Steven Lohrenz, Hubert Loisel, Antonio Mannino, Victor Martinez-Vicente, Patricia Matrai, David McKee, Brian G. Mitchell, Tiffany Moisan, Enrique Montes, Frank Muller-Karger, Aimee Neeley, Michael Novak, Leonie O'Dowd, Michael Ondrusek, Trevor Platt, Alex J. Poulton, Michel Repecaud, Rüdiger Röttgers, Thomas Schroeder, Timothy Smyth, Denise Smythe-Wright, Heidi M. Sosik, Crystal Thomas, Rob Thomas, Gavin Tilstone, Andreia Tracana, Michael Twardowski, Vincenzo Vellucci, Kenneth Voss, Jeremy Werdell, Marcel Wernand, Bozena Wojtasiewicz, Simon Wright, and Giuseppe Zibordi
Earth Syst. Sci. Data, 14, 5737–5770, https://doi.org/10.5194/essd-14-5737-2022, https://doi.org/10.5194/essd-14-5737-2022, 2022
Short summary
Short summary
A compiled set of in situ data is vital to evaluate the quality of ocean-colour satellite data records. Here we describe the global compilation of bio-optical in situ data (spanning from 1997 to 2021) used for the validation of the ocean-colour products from the ESA Ocean Colour Climate Change Initiative (OC-CCI). The compilation merges and harmonizes several in situ data sources into a simple format that could be used directly for the evaluation of satellite-derived ocean-colour data.
Allanah Joy Paul, Lennart Thomas Bach, Javier Arístegui, Elisabeth von der Esch, Nauzet Hernández-Hernández, Jonna Piiparinen, Laura Ramajo, Kristian Spilling, and Ulf Riebesell
Biogeosciences, 19, 5911–5926, https://doi.org/10.5194/bg-19-5911-2022, https://doi.org/10.5194/bg-19-5911-2022, 2022
Short summary
Short summary
We investigated how different deep water chemistry and biology modulate the response of surface phytoplankton communities to upwelling in the Peruvian coastal zone. Our results show that the most influential drivers were the ratio of inorganic nutrients (N : P) and the microbial community present in upwelling source water. These led to unexpected and variable development in the phytoplankton assemblage that could not be predicted by the amount of inorganic nutrients alone.
Shao-Min Chen, Ulf Riebesell, Kai G. Schulz, Elisabeth von der Esch, Eric P. Achterberg, and Lennart T. Bach
Biogeosciences, 19, 295–312, https://doi.org/10.5194/bg-19-295-2022, https://doi.org/10.5194/bg-19-295-2022, 2022
Short summary
Short summary
Oxygen minimum zones in the ocean are characterized by enhanced carbon dioxide (CO2) levels and are being further acidified by increasing anthropogenic atmospheric CO2. Here we report CO2 system measurements in a mesocosm study offshore Peru during a rare coastal El Niño event to investigate how CO2 dynamics may respond to ongoing ocean deoxygenation. Our observations show that nitrogen limitation, productivity, and plankton community shift play an important role in driving the CO2 dynamics.
Kai G. Schulz, Eric P. Achterberg, Javier Arístegui, Lennart T. Bach, Isabel Baños, Tim Boxhammer, Dirk Erler, Maricarmen Igarza, Verena Kalter, Andrea Ludwig, Carolin Löscher, Jana Meyer, Judith Meyer, Fabrizio Minutolo, Elisabeth von der Esch, Bess B. Ward, and Ulf Riebesell
Biogeosciences, 18, 4305–4320, https://doi.org/10.5194/bg-18-4305-2021, https://doi.org/10.5194/bg-18-4305-2021, 2021
Short summary
Short summary
Upwelling of nutrient-rich deep waters to the surface make eastern boundary upwelling systems hot spots of marine productivity. This leads to subsurface oxygen depletion and the transformation of bioavailable nitrogen into inert N2. Here we quantify nitrogen loss processes following a simulated deep water upwelling. Denitrification was the dominant process, and budget calculations suggest that a significant portion of nitrogen that could be exported to depth is already lost in the surface ocean.
Lennart Thomas Bach, Allanah Joy Paul, Tim Boxhammer, Elisabeth von der Esch, Michelle Graco, Kai Georg Schulz, Eric Achterberg, Paulina Aguayo, Javier Arístegui, Patrizia Ayón, Isabel Baños, Avy Bernales, Anne Sophie Boegeholz, Francisco Chavez, Gabriela Chavez, Shao-Min Chen, Kristin Doering, Alba Filella, Martin Fischer, Patricia Grasse, Mathias Haunost, Jan Hennke, Nauzet Hernández-Hernández, Mark Hopwood, Maricarmen Igarza, Verena Kalter, Leila Kittu, Peter Kohnert, Jesus Ledesma, Christian Lieberum, Silke Lischka, Carolin Löscher, Andrea Ludwig, Ursula Mendoza, Jana Meyer, Judith Meyer, Fabrizio Minutolo, Joaquin Ortiz Cortes, Jonna Piiparinen, Claudia Sforna, Kristian Spilling, Sonia Sanchez, Carsten Spisla, Michael Sswat, Mabel Zavala Moreira, and Ulf Riebesell
Biogeosciences, 17, 4831–4852, https://doi.org/10.5194/bg-17-4831-2020, https://doi.org/10.5194/bg-17-4831-2020, 2020
Short summary
Short summary
The eastern boundary upwelling system off Peru is among Earth's most productive ocean ecosystems, but the factors that control its functioning are poorly constrained. Here we used mesocosms, moored ~ 6 km offshore Peru, to investigate how processes in plankton communities drive key biogeochemical processes. We show that nutrient and light co-limitation keep productivity and export at a remarkably constant level while stoichiometry changes strongly with shifts in plankton community structure.
Giulia Faucher, Ulf Riebesell, and Lennart Thomas Bach
Clim. Past, 16, 1007–1025, https://doi.org/10.5194/cp-16-1007-2020, https://doi.org/10.5194/cp-16-1007-2020, 2020
Short summary
Short summary
We designed five experiments choosing different coccolithophore species that have been evolutionarily distinct for millions of years. If all species showed the same morphological response to an environmental driver, this could be indicative of a response pattern that is conserved over geological timescales. We found an increase in the percentage of malformed coccoliths under altered CO2, providing evidence that this response could be used as paleo-proxy for episodes of acute CO2 perturbations.
André Valente, Shubha Sathyendranath, Vanda Brotas, Steve Groom, Michael Grant, Malcolm Taberner, David Antoine, Robert Arnone, William M. Balch, Kathryn Barker, Ray Barlow, Simon Bélanger, Jean-François Berthon, Şükrü Beşiktepe, Yngve Borsheim, Astrid Bracher, Vittorio Brando, Elisabetta Canuti, Francisco Chavez, Andrés Cianca, Hervé Claustre, Lesley Clementson, Richard Crout, Robert Frouin, Carlos García-Soto, Stuart W. Gibb, Richard Gould, Stanford B. Hooker, Mati Kahru, Milton Kampel, Holger Klein, Susanne Kratzer, Raphael Kudela, Jesus Ledesma, Hubert Loisel, Patricia Matrai, David McKee, Brian G. Mitchell, Tiffany Moisan, Frank Muller-Karger, Leonie O'Dowd, Michael Ondrusek, Trevor Platt, Alex J. Poulton, Michel Repecaud, Thomas Schroeder, Timothy Smyth, Denise Smythe-Wright, Heidi M. Sosik, Michael Twardowski, Vincenzo Vellucci, Kenneth Voss, Jeremy Werdell, Marcel Wernand, Simon Wright, and Giuseppe Zibordi
Earth Syst. Sci. Data, 11, 1037–1068, https://doi.org/10.5194/essd-11-1037-2019, https://doi.org/10.5194/essd-11-1037-2019, 2019
Short summary
Short summary
A compiled set of in situ data is useful to evaluate the quality of ocean-colour satellite data records. Here we describe the compilation of global bio-optical in situ data (spanning from 1997 to 2018) used for the validation of the ocean-colour products from the ESA Ocean Colour Climate Change Initiative (OC-CCI). The compilation merges and harmonizes several in situ data sources into a simple format that could be used directly for the evaluation of satellite-derived ocean-colour data.
Yong Zhang, Lennart T. Bach, Kai T. Lohbeck, Kai G. Schulz, Luisa Listmann, Regina Klapper, and Ulf Riebesell
Biogeosciences, 15, 3691–3701, https://doi.org/10.5194/bg-15-3691-2018, https://doi.org/10.5194/bg-15-3691-2018, 2018
Short summary
Short summary
To compare variations in physiological responses to pCO2 between populations, we measured growth, POC and PIC production rates at a pCO2 range from 120 to 2630 µatm for 17 strains of the coccolithophore Emiliania huxleyi from the Azores, Canary Islands, and Norwegian coast near Bergen. Optimal pCO2 for growth and POC production rates and tolerance to low pH was significantly higher for the Bergen population than the Azores and Canary Islands populations.
Katharine J. Crawfurd, Santiago Alvarez-Fernandez, Kristina D. A. Mojica, Ulf Riebesell, and Corina P. D. Brussaard
Biogeosciences, 14, 3831–3849, https://doi.org/10.5194/bg-14-3831-2017, https://doi.org/10.5194/bg-14-3831-2017, 2017
Short summary
Short summary
Carbon dioxide (CO2) is increasing in the atmosphere and oceans. To simulate future conditions we manipulated CO2 concentrations of natural Baltic seawater in 55 m3 bags in situ. We saw increased growth rates and abundances of the smallest-sized eukaryotic phytoplankton and reduced abundances of other phytoplankton with increased CO2. Viral and bacterial abundances were also affected. This would lead to more carbon recycling in the surface water and affect marine food webs and the carbon cycle.
Giulia Faucher, Linn Hoffmann, Lennart T. Bach, Cinzia Bottini, Elisabetta Erba, and Ulf Riebesell
Biogeosciences, 14, 3603–3613, https://doi.org/10.5194/bg-14-3603-2017, https://doi.org/10.5194/bg-14-3603-2017, 2017
Short summary
Short summary
The main goal of this study was to understand if, similarly to the fossil record, high quantities of toxic metals induce coccolith dwarfism in coccolithophore species. We investigated, for the first time, the effects of trace metals on coccolithophore species other than E. huxleyi and on coccolith morphology and size. Our data show a species-specific sensitivity to trace metal concentration, allowing the recognition of the most-, intermediate- and least-tolerant taxa to trace metal enrichments.
Silke Lischka, Lennart T. Bach, Kai-Georg Schulz, and Ulf Riebesell
Biogeosciences, 14, 447–466, https://doi.org/10.5194/bg-14-447-2017, https://doi.org/10.5194/bg-14-447-2017, 2017
Short summary
Short summary
We conducted a large-scale field experiment using 55 m3 floating containers (mesocosms) to investigate consequences of near-future projected CO2 elevations (ocean acidification) on a Baltic Sea plankton community in Storfjärden (Finland). The focus of our study was on single- and multicelled small-sized organisms dwelling in the water column. Our results suggest that increasing CO2 concentrations may change the species composition and promote specific food web interactions.
Enis Hrustić, Risto Lignell, Ulf Riebesell, and Tron Frede Thingstad
Biogeosciences, 14, 379–387, https://doi.org/10.5194/bg-14-379-2017, https://doi.org/10.5194/bg-14-379-2017, 2017
Short summary
Short summary
Phytoplankton in the ocean's stratified layer are limited by mineral nutrients, normally nitrogen, phosphorus, or iron. It is important to know not only which element is limiting, but also the surplus of the secondary limiting element. We explore here, in temperate mesotrophic waters, a bioassay based on alkaline phosphatase that provides information on both of these.
Thomas Hornick, Lennart T. Bach, Katharine J. Crawfurd, Kristian Spilling, Eric P. Achterberg, Jason N. Woodhouse, Kai G. Schulz, Corina P. D. Brussaard, Ulf Riebesell, and Hans-Peter Grossart
Biogeosciences, 14, 1–15, https://doi.org/10.5194/bg-14-1-2017, https://doi.org/10.5194/bg-14-1-2017, 2017
Rafael Bermúdez, Monika Winder, Annegret Stuhr, Anna-Karin Almén, Jonna Engström-Öst, and Ulf Riebesell
Biogeosciences, 13, 6625–6635, https://doi.org/10.5194/bg-13-6625-2016, https://doi.org/10.5194/bg-13-6625-2016, 2016
Short summary
Short summary
Increasing CO2 is changing seawater chemistry towards a lower pH, which affects marine organisms. We investigate the response of a brackish plankton community to a CO2 gradient in terms of structure and fatty acid composition. The structure was resilient to CO2 and did not diverge between treatments. FA was influenced by community structure, which was driven by silicate and phosphate. This suggests that CO2 effects are dampened in communities already experiencing high natural pCO2 fluctuation.
Anu Vehmaa, Anna-Karin Almén, Andreas Brutemark, Allanah Paul, Ulf Riebesell, Sara Furuhagen, and Jonna Engström-Öst
Biogeosciences, 13, 6171–6182, https://doi.org/10.5194/bg-13-6171-2016, https://doi.org/10.5194/bg-13-6171-2016, 2016
Short summary
Short summary
Ocean acidification is challenging phenotypic plasticity of individuals and populations. We studied phenotypic plasticity of the calanoid copepod Acartia bifilosa in the course of a pelagic, large-volume mesocosm study in the Baltic Sea. We found significant negative effects of ocean acidification on adult female copepod size and egg hatching success. Overall, these results indicate that A. bifilosa could be affected by projected near-future CO2 levels.
Kristian Spilling, Kai G. Schulz, Allanah J. Paul, Tim Boxhammer, Eric P. Achterberg, Thomas Hornick, Silke Lischka, Annegret Stuhr, Rafael Bermúdez, Jan Czerny, Kate Crawfurd, Corina P. D. Brussaard, Hans-Peter Grossart, and Ulf Riebesell
Biogeosciences, 13, 6081–6093, https://doi.org/10.5194/bg-13-6081-2016, https://doi.org/10.5194/bg-13-6081-2016, 2016
Short summary
Short summary
We performed an experiment in the Baltic Sea in order to investigate the consequences of the increasing CO2 levels on biological processes in the free water mass. There was more accumulation of organic carbon at high CO2 levels. Surprisingly, this was caused by reduced loss processes (respiration and bacterial production) in a high-CO2 environment, and not by increased photosynthetic fixation of CO2. Our carbon budget can be used to better disentangle the effects of ocean acidification.
Kristian Spilling, Allanah J. Paul, Niklas Virkkala, Tom Hastings, Silke Lischka, Annegret Stuhr, Rafael Bermúdez, Jan Czerny, Tim Boxhammer, Kai G. Schulz, Andrea Ludwig, and Ulf Riebesell
Biogeosciences, 13, 4707–4719, https://doi.org/10.5194/bg-13-4707-2016, https://doi.org/10.5194/bg-13-4707-2016, 2016
Short summary
Short summary
Anthropogenic carbon dioxide (CO2) emissions are reducing the pH in the world's oceans. We determined the plankton community composition and measured primary production, respiration rates and carbon export during an ocean acidification experiment. Our results suggest that increased CO2 reduced respiration and increased net carbon fixation at high CO2. This did not, however, translate into higher carbon export, and consequently did not work as a negative feedback mechanism for decreasing pH.
Juntian Xu, Lennart T. Bach, Kai G. Schulz, Wenyan Zhao, Kunshan Gao, and Ulf Riebesell
Biogeosciences, 13, 4637–4643, https://doi.org/10.5194/bg-13-4637-2016, https://doi.org/10.5194/bg-13-4637-2016, 2016
Alison L. Webb, Emma Leedham-Elvidge, Claire Hughes, Frances E. Hopkins, Gill Malin, Lennart T. Bach, Kai Schulz, Kate Crawfurd, Corina P. D. Brussaard, Annegret Stuhr, Ulf Riebesell, and Peter S. Liss
Biogeosciences, 13, 4595–4613, https://doi.org/10.5194/bg-13-4595-2016, https://doi.org/10.5194/bg-13-4595-2016, 2016
Short summary
Short summary
This paper presents concentrations of several trace gases produced by the Baltic Sea phytoplankton community during a mesocosm experiment with five different CO2 levels. Average concentrations of dimethylsulphide were lower in the highest CO2 mesocosms over a 6-week period, corresponding to previous mesocosm experiment results. No dimethylsulfoniopropionate was detected due to a methodological issue. Concentrations of iodine- and bromine-containing halocarbons were unaffected by increasing CO2.
Allanah J. Paul, Eric P. Achterberg, Lennart T. Bach, Tim Boxhammer, Jan Czerny, Mathias Haunost, Kai-Georg Schulz, Annegret Stuhr, and Ulf Riebesell
Biogeosciences, 13, 3901–3913, https://doi.org/10.5194/bg-13-3901-2016, https://doi.org/10.5194/bg-13-3901-2016, 2016
Carolin R. Löscher, Hermann W. Bange, Ruth A. Schmitz, Cameron M. Callbeck, Anja Engel, Helena Hauss, Torsten Kanzow, Rainer Kiko, Gaute Lavik, Alexandra Loginova, Frank Melzner, Judith Meyer, Sven C. Neulinger, Markus Pahlow, Ulf Riebesell, Harald Schunck, Sören Thomsen, and Hannes Wagner
Biogeosciences, 13, 3585–3606, https://doi.org/10.5194/bg-13-3585-2016, https://doi.org/10.5194/bg-13-3585-2016, 2016
Short summary
Short summary
The ocean loses oxygen due to climate change. Addressing this issue in tropical ocean regions (off Peru and Mauritania), we aimed to understand the effects of oxygen depletion on various aspects of marine biogeochemistry, including primary production and export production, the nitrogen cycle, greenhouse gas production, organic matter fluxes and remineralization, and the role of zooplankton and viruses.
Monika Nausch, Lennart Thomas Bach, Jan Czerny, Josephine Goldstein, Hans-Peter Grossart, Dana Hellemann, Thomas Hornick, Eric Pieter Achterberg, Kai-Georg Schulz, and Ulf Riebesell
Biogeosciences, 13, 3035–3050, https://doi.org/10.5194/bg-13-3035-2016, https://doi.org/10.5194/bg-13-3035-2016, 2016
Short summary
Short summary
Studies investigating the effect of increasing CO2 levels on the phosphorus cycle in natural waters are lacking although phosphorus often controls phytoplankton development in aquatic systems. The aim of our study was to analyse effects of elevated CO2 levels on phosphorus pool sizes and uptake. Therefore, we conducted a CO2-manipulation mesocosm experiment in the Storfjärden (western Gulf of Finland, Baltic Sea) in summer 2012. We compared the phosphorus dynamics in different mesocosm treatment
Tim Boxhammer, Lennart T. Bach, Jan Czerny, and Ulf Riebesell
Biogeosciences, 13, 2849–2858, https://doi.org/10.5194/bg-13-2849-2016, https://doi.org/10.5194/bg-13-2849-2016, 2016
Anna-Karin Almén, Anu Vehmaa, Andreas Brutemark, Lennart Bach, Silke Lischka, Annegret Stuhr, Sara Furuhagen, Allanah Paul, J. Rafael Bermúdez, Ulf Riebesell, and Jonna Engström-Öst
Biogeosciences, 13, 1037–1048, https://doi.org/10.5194/bg-13-1037-2016, https://doi.org/10.5194/bg-13-1037-2016, 2016
Short summary
Short summary
We studied the effects of ocean acidification (OA) on the aquatic crustacean Eurytemora affinis and measured offspring production in relation to pH, chlorophyll, algae, fatty acids, and oxidative stress. No effects on offspring production or pH effects via food were found. E. affinis seems robust against OA on a physiological level and did probably not face acute pH stress in the treatments, as the species naturally face large pH fluctuations.
J. Meyer, C. R. Löscher, S. C. Neulinger, A. F. Reichel, A. Loginova, C. Borchard, R. A. Schmitz, H. Hauss, R. Kiko, and U. Riebesell
Biogeosciences, 13, 781–794, https://doi.org/10.5194/bg-13-781-2016, https://doi.org/10.5194/bg-13-781-2016, 2016
M. N. Müller, J. Barcelos e Ramos, K. G. Schulz, U. Riebesell, J. Kaźmierczak, F. Gallo, L. Mackinder, Y. Li, P. N. Nesterenko, T. W. Trull, and G. M. Hallegraeff
Biogeosciences, 12, 6493–6501, https://doi.org/10.5194/bg-12-6493-2015, https://doi.org/10.5194/bg-12-6493-2015, 2015
Short summary
Short summary
The White Cliffs of Dover date back to the Cretaceous and are made up of microscopic chalky shells which were produced mainly by marine phytoplankton (coccolithophores). This is iconic proof for their success at times of relatively high seawater calcium concentrations and, as shown here, to be linked to their ability to precipitate calcium as chalk. The invention of calcification can thus be considered an evolutionary milestone allowing coccolithophores to thrive at times when others struggled.
A. Singh, S. E. Baer, U. Riebesell, A. C. Martiny, and M. W. Lomas
Biogeosciences, 12, 6389–6403, https://doi.org/10.5194/bg-12-6389-2015, https://doi.org/10.5194/bg-12-6389-2015, 2015
Short summary
Short summary
Stoichiometry of macronutrients in the subtropical ocean is important to understand how biogeochemical cycles are coupled. We observed that elemental stoichiometry was much higher in the dissolved organic-matter pools than in the particulate organic matter pools. In addition ratios vary with depth due to changes in growth rates of specific phytoplankton groups, namely cyanobacteria. These data will improve biogeochemical models by placing observational constraints on these ratios.
A. J. Paul, L. T. Bach, K.-G. Schulz, T. Boxhammer, J. Czerny, E. P. Achterberg, D. Hellemann, Y. Trense, M. Nausch, M. Sswat, and U. Riebesell
Biogeosciences, 12, 6181–6203, https://doi.org/10.5194/bg-12-6181-2015, https://doi.org/10.5194/bg-12-6181-2015, 2015
J. Meyer and U. Riebesell
Biogeosciences, 12, 1671–1682, https://doi.org/10.5194/bg-12-1671-2015, https://doi.org/10.5194/bg-12-1671-2015, 2015
S. A. Krueger-Hadfield, C. Balestreri, J. Schroeder, A. Highfield, P. Helaouët, J. Allum, R. Moate, K. T. Lohbeck, P. I. Miller, U. Riebesell, T. B. H. Reusch, R. E. M. Rickaby, J. Young, G. Hallegraeff, C. Brownlee, and D. C. Schroeder
Biogeosciences, 11, 5215–5234, https://doi.org/10.5194/bg-11-5215-2014, https://doi.org/10.5194/bg-11-5215-2014, 2014
D. C. E. Bakker, B. Pfeil, K. Smith, S. Hankin, A. Olsen, S. R. Alin, C. Cosca, S. Harasawa, A. Kozyr, Y. Nojiri, K. M. O'Brien, U. Schuster, M. Telszewski, B. Tilbrook, C. Wada, J. Akl, L. Barbero, N. R. Bates, J. Boutin, Y. Bozec, W.-J. Cai, R. D. Castle, F. P. Chavez, L. Chen, M. Chierici, K. Currie, H. J. W. de Baar, W. Evans, R. A. Feely, A. Fransson, Z. Gao, B. Hales, N. J. Hardman-Mountford, M. Hoppema, W.-J. Huang, C. W. Hunt, B. Huss, T. Ichikawa, T. Johannessen, E. M. Jones, S. D. Jones, S. Jutterström, V. Kitidis, A. Körtzinger, P. Landschützer, S. K. Lauvset, N. Lefèvre, A. B. Manke, J. T. Mathis, L. Merlivat, N. Metzl, A. Murata, T. Newberger, A. M. Omar, T. Ono, G.-H. Park, K. Paterson, D. Pierrot, A. F. Ríos, C. L. Sabine, S. Saito, J. Salisbury, V. V. S. S. Sarma, R. Schlitzer, R. Sieger, I. Skjelvan, T. Steinhoff, K. F. Sullivan, H. Sun, A. J. Sutton, T. Suzuki, C. Sweeney, T. Takahashi, J. Tjiputra, N. Tsurushima, S. M. A. C. van Heuven, D. Vandemark, P. Vlahos, D. W. R. Wallace, R. Wanninkhof, and A. J. Watson
Earth Syst. Sci. Data, 6, 69–90, https://doi.org/10.5194/essd-6-69-2014, https://doi.org/10.5194/essd-6-69-2014, 2014
M. N. Müller, M. Lebrato, U. Riebesell, J. Barcelos e Ramos, K. G. Schulz, S. Blanco-Ameijeiras, S. Sett, A. Eisenhauer, and H. M. Stoll
Biogeosciences, 11, 1065–1075, https://doi.org/10.5194/bg-11-1065-2014, https://doi.org/10.5194/bg-11-1065-2014, 2014
A. Silyakova, R. G. J. Bellerby, K. G. Schulz, J. Czerny, T. Tanaka, G. Nondal, U. Riebesell, A. Engel, T. De Lange, and A. Ludvig
Biogeosciences, 10, 4847–4859, https://doi.org/10.5194/bg-10-4847-2013, https://doi.org/10.5194/bg-10-4847-2013, 2013
J. Czerny, K. G. Schulz, T. Boxhammer, R. G. J. Bellerby, J. Büdenbender, A. Engel, S. A. Krug, A. Ludwig, K. Nachtigall, G. Nondal, B. Niehoff, A. Silyakova, and U. Riebesell
Biogeosciences, 10, 3109–3125, https://doi.org/10.5194/bg-10-3109-2013, https://doi.org/10.5194/bg-10-3109-2013, 2013
J. Czerny, K. G. Schulz, S. A. Krug, A. Ludwig, and U. Riebesell
Biogeosciences, 10, 1937–1941, https://doi.org/10.5194/bg-10-1937-2013, https://doi.org/10.5194/bg-10-1937-2013, 2013
U. Riebesell, J. Czerny, K. von Bröckel, T. Boxhammer, J. Büdenbender, M. Deckelnick, M. Fischer, D. Hoffmann, S. A. Krug, U. Lentz, A. Ludwig, R. Muche, and K. G. Schulz
Biogeosciences, 10, 1835–1847, https://doi.org/10.5194/bg-10-1835-2013, https://doi.org/10.5194/bg-10-1835-2013, 2013
N. Aberle, K. G. Schulz, A. Stuhr, A. M. Malzahn, A. Ludwig, and U. Riebesell
Biogeosciences, 10, 1471–1481, https://doi.org/10.5194/bg-10-1471-2013, https://doi.org/10.5194/bg-10-1471-2013, 2013
A. de Kluijver, K. Soetaert, J. Czerny, K. G. Schulz, T. Boxhammer, U. Riebesell, and J. J. Middelburg
Biogeosciences, 10, 1425–1440, https://doi.org/10.5194/bg-10-1425-2013, https://doi.org/10.5194/bg-10-1425-2013, 2013
A. Engel, C. Borchard, J. Piontek, K. G. Schulz, U. Riebesell, and R. Bellerby
Biogeosciences, 10, 1291–1308, https://doi.org/10.5194/bg-10-1291-2013, https://doi.org/10.5194/bg-10-1291-2013, 2013
C. P. D. Brussaard, A. A. M. Noordeloos, H. Witte, M. C. J. Collenteur, K. Schulz, A. Ludwig, and U. Riebesell
Biogeosciences, 10, 719–731, https://doi.org/10.5194/bg-10-719-2013, https://doi.org/10.5194/bg-10-719-2013, 2013
A.-S. Roy, S. M. Gibbons, H. Schunck, S. Owens, J. G. Caporaso, M. Sperling, J. I. Nissimov, S. Romac, L. Bittner, M. Mühling, U. Riebesell, J. LaRoche, and J. A. Gilbert
Biogeosciences, 10, 555–566, https://doi.org/10.5194/bg-10-555-2013, https://doi.org/10.5194/bg-10-555-2013, 2013
T. Tanaka, S. Alliouane, R. G. B. Bellerby, J. Czerny, A. de Kluijver, U. Riebesell, K. G. Schulz, A. Silyakova, and J.-P. Gattuso
Biogeosciences, 10, 315–325, https://doi.org/10.5194/bg-10-315-2013, https://doi.org/10.5194/bg-10-315-2013, 2013
J. Piontek, C. Borchard, M. Sperling, K. G. Schulz, U. Riebesell, and A. Engel
Biogeosciences, 10, 297–314, https://doi.org/10.5194/bg-10-297-2013, https://doi.org/10.5194/bg-10-297-2013, 2013
M. Sperling, J. Piontek, G. Gerdts, A. Wichels, H. Schunck, A.-S. Roy, J. La Roche, J. Gilbert, J. I. Nissimov, L. Bittner, S. Romac, U. Riebesell, and A. Engel
Biogeosciences, 10, 181–191, https://doi.org/10.5194/bg-10-181-2013, https://doi.org/10.5194/bg-10-181-2013, 2013
K. G. Schulz, R. G. J. Bellerby, C. P. D. Brussaard, J. Büdenbender, J. Czerny, A. Engel, M. Fischer, S. Koch-Klavsen, S. A. Krug, S. Lischka, A. Ludwig, M. Meyerhöfer, G. Nondal, A. Silyakova, A. Stuhr, and U. Riebesell
Biogeosciences, 10, 161–180, https://doi.org/10.5194/bg-10-161-2013, https://doi.org/10.5194/bg-10-161-2013, 2013
Related subject area
Biodiversity and Ecosystem Function: Marine
Phytoplankton adaptation to steady or changing environments affects marine ecosystem functioning
Characterizing regional oceanography and bottom environmental conditions at two contrasting sponge grounds on the northern Labrador Shelf
Seasonal foraging behavior of Weddell seals in relation to oceanographic environmental conditions in the Ross Sea, Antarctica
Multifactorial effects of warming, low irradiance, and low salinity on Arctic kelps
Early life stages of fish under ocean alkalinity enhancement in coastal plankton communities
Planktonic foraminifera assemblage composition and flux dynamics inferred from an annual sediment trap record in the central Mediterranean Sea
Reefal ostracod assemblages from the Zanzibar Archipelago (Tanzania)
Growth response of Emiliania huxleyi to ocean alkalinity enhancement
Composite calcite and opal test in Foraminifera (Rhizaria)
Influence of oxygen minimum zone on macrobenthic community structure in the northern Benguela Upwelling System: a macro-nematode perspective
Simulated terrestrial runoff shifts the metabolic balance of a coastal Mediterranean plankton community towards heterotrophy
Contrasting carbon cycling in the benthic food webs between a river-fed, high-energy canyon and an upper continental slope
A critical trade-off between nitrogen quota and growth allows Coccolithus braarudii life cycle phases to exploit varying environment
Structural complexity and benthic metabolism: resolving the links between carbon cycling and biodiversity in restored seagrass meadows
Biological response of eelgrass epifauna, Taylor’s sea hare (Phyllaplysia taylori) and eelgrass isopod (Idotea resecata), to elevated ocean alkalinity
Including the invisible: Deep depth-integrated chlorophyll estimates from remote sensing may assist in identifying biologically important areas in oligotrophic coastal margins
Building your own mountain: the effects, limits, and drawbacks of cold-water coral ecosystem engineering
Phytoplankton response to increased nickel in the context of ocean alkalinity enhancement
Diversity and density relationships between lebensspuren and tracemaking organisms: a study case from abyssal northwest Pacific
Technical note: An autonomous flow-through salinity and temperature perturbation mesocosm system for multi-stressor experiments
Reviews and syntheses: The clam before the storm – a meta-analysis showing the effect of combined climate change stressors on bivalves
A step towards measuring connectivity in the deep sea: elemental fingerprints of mollusk larval shells discriminate hydrothermal vent sites
Spawner weight and ocean temperature drive Allee effect dynamics in Atlantic cod, Gadus morhua: inherent and emergent density regulation
Bacterioplankton dark CO2 fixation in oligotrophic waters
The bottom mixed layer depth as an indicator of subsurface Chlorophyll a distribution
Ideas and perspectives: The fluctuating nature of oxygen shapes the ecology of aquatic habitats and their biogeochemical cycles – the aquatic oxyscape
Impact of deoxygenation and warming on global marine species in the 21st century
Unique benthic foraminiferal communities (stained) in diverse environments of sub-Antarctic fjords, South Georgia
Upwelled plankton community modulates surface bloom succession and nutrient availability in a natural plankton assemblage
First phytoplankton community assessment of the Kong Håkon VII Hav, Southern Ocean, during austral autumn
Early life stages of a Mediterranean coral are vulnerable to ocean warming and acidification
Mediterranean seagrasses as carbon sinks: methodological and regional differences
Contrasting vertical distributions of recent planktic foraminifera off Indonesia during the southeast monsoon: implications for paleoceanographic reconstructions
The onset of the spring phytoplankton bloom in the coastal North Sea supports the Disturbance Recovery Hypothesis
Species richness and functional attributes of fish assemblages across a large-scale salinity gradient in shallow coastal areas
Modeling the growth and sporulation dynamics of the macroalga Ulva in mixed-age populations in cultivation and the formation of green tides
Spatial changes in community composition and food web structure of mesozooplankton across the Adriatic basin (Mediterranean Sea)
Predicting mangrove forest dynamics across a soil salinity gradient using an individual-based vegetation model linked with plant hydraulics
Will daytime community calcification reflect reef accretion on future, degraded coral reefs?
Modeling polar marine ecosystem functions guided by bacterial physiological and taxonomic traits
Quantifying functional consequences of habitat degradation on a Caribbean coral reef
Enhanced chlorophyll-a concentration in the wake of Sable Island, eastern Canada, revealed by two decades of satellite observations: a response to grey seal population dynamics?
Population dynamics and reproduction strategies of planktonic foraminifera in the open ocean
The Bouraké semi-enclosed lagoon (New Caledonia) – a natural laboratory to study the lifelong adaptation of a coral reef ecosystem to extreme environmental conditions
Atypical, high-diversity assemblages of foraminifera in a mangrove estuary in northern Brazil
Permanent ectoplasmic structures in deep-sea Cibicides and Cibicidoides taxa – long-term observations at in situ pressure
Ideas and perspectives: Ushering the Indian Ocean into the UN Decade of Ocean Science for Sustainable Development (UNDOSSD) through marine ecosystem research and operational services – an early career's take
Persistent effects of sand extraction on habitats and associated benthic communities in the German Bight
Spatial patterns of ectoenzymatic kinetics in relation to biogeochemical properties in the Mediterranean Sea and the concentration of the fluorogenic substrate used
A 2-decade (1988–2009) record of diatom fluxes in the Mauritanian coastal upwelling: impact of low-frequency forcing and a two-step shift in the species composition
Isabell Hochfeld and Jana Hinners
Biogeosciences, 21, 5591–5611, https://doi.org/10.5194/bg-21-5591-2024, https://doi.org/10.5194/bg-21-5591-2024, 2024
Short summary
Short summary
Ecosystem models disagree on future changes in marine ecosystem functioning. We suspect that the lack of phytoplankton adaptation represents a major uncertainty factor, given the key role that phytoplankton play in marine ecosystems. Using an evolutionary ecosystem model, we found that phytoplankton adaptation can notably change simulated ecosystem dynamics. Future models should include phytoplankton adaptation; otherwise they can systematically overestimate future ecosystem-level changes.
Evert de Froe, Igor Yashayaev, Christian Mohn, Johanne Vad, Furu Mienis, Gerard Duineveld, Ellen Kenchington, Erica Head, Steve W. Ross, Sabena Blackbird, George A. Wolff, J. Murray Roberts, Barry MacDonald, Graham Tulloch, and Dick van Oevelen
Biogeosciences, 21, 5407–5433, https://doi.org/10.5194/bg-21-5407-2024, https://doi.org/10.5194/bg-21-5407-2024, 2024
Short summary
Short summary
Deep-sea sponge grounds are distributed globally and are considered hotspots of biological diversity and biogeochemical cycling. To date, little is known about the environmental constraints that control where deep-sea sponge grounds occur and what conditions favour high sponge biomass. Here, we characterize oceanographic conditions at two contrasting sponge grounds. Our results imply that sponges and associated fauna benefit from strong tidal currents and favourable regional ocean currents.
Hyunjae Chung, Jikang Park, Mijin Park, Yejin Kim, Unyoung Chun, Sukyoung Yun, Won Sang Lee, Hyun A. Choi, Ji Sung Na, Seung-Tae Yoon, and Won Young Lee
Biogeosciences, 21, 5199–5217, https://doi.org/10.5194/bg-21-5199-2024, https://doi.org/10.5194/bg-21-5199-2024, 2024
Short summary
Short summary
Understanding how marine animals adapt to variations in marine environmental conditions is paramount. In this paper, we investigated the influence of changes in seawater and light conditions on the seasonal foraging behavior of Weddell seals in the Ross Sea, Antarctica. Our findings could serve as a baseline and establish a foundational understanding for future research, particularly concerning the impact of marine environmental changes on the ecosystem of the Ross Sea Marine Protected Area.
Anaïs Lebrun, Cale A. Miller, Marc Meynadier, Steeve Comeau, Pierre Urrutti, Samir Alliouane, Robert Schlegel, Jean-Pierre Gattuso, and Frédéric Gazeau
Biogeosciences, 21, 4605–4620, https://doi.org/10.5194/bg-21-4605-2024, https://doi.org/10.5194/bg-21-4605-2024, 2024
Short summary
Short summary
We tested the effects of warming, low salinity, and low irradiance on Arctic kelps. We show that growth rates were similar across species and treatments. Alaria esculenta is adapted to low-light conditions. Saccharina latissima exhibited nitrogen limitation, suggesting coastal erosion and permafrost thawing could be beneficial. Laminaria digitata did not respond to the treatments. Gene expression of Hedophyllum nigripes and S. latissima indicated acclimation to the experimental treatments.
Silvan Urs Goldenberg, Ulf Riebesell, Daniel Brüggemann, Gregor Börner, Michael Sswat, Arild Folkvord, Maria Couret, Synne Spjelkavik, Nicolás Sánchez, Cornelia Jaspers, and Marta Moyano
Biogeosciences, 21, 4521–4532, https://doi.org/10.5194/bg-21-4521-2024, https://doi.org/10.5194/bg-21-4521-2024, 2024
Short summary
Short summary
Ocean alkalinity enhancement (OAE) is being evaluated as a carbon dioxide removal technology for climate change mitigation. With an experiment on species communities, we show that larval and juvenile fish can be resilient to the resulting perturbation of seawater. Fish may hence recruit successfully and continue to support fisheries' production in regions of OAE. Our findings help to establish an environmentally safe operating space for this ocean-based solution.
Thibauld M. Béjard, Andrés S. Rigual-Hernández, Javier P. Tarruella, José-Abel Flores, Anna Sanchez-Vidal, Irene Llamas-Cano, and Francisco J. Sierro
Biogeosciences, 21, 4051–4076, https://doi.org/10.5194/bg-21-4051-2024, https://doi.org/10.5194/bg-21-4051-2024, 2024
Short summary
Short summary
The Mediterranean Sea is regarded as a climate change hotspot. Documenting the population of planktonic foraminifera is crucial. In the Sicily Channel, fluxes are higher during winter and positively linked with chlorophyll a concentration and cool temperatures. A comparison with other Mediterranean sites shows the transitional aspect of the studied zone. Finally, modern populations significantly differ from those in the sediment, highlighting a possible effect of environmental change.
Skye Yunshu Tian, Martin Langer, Moriaki Yasuhara, and Chih-Lin Wei
Biogeosciences, 21, 3523–3536, https://doi.org/10.5194/bg-21-3523-2024, https://doi.org/10.5194/bg-21-3523-2024, 2024
Short summary
Short summary
Through the first large-scale study of meiobenthic ostracods from the diverse and productive reef ecosystem in the Zanzibar Archipelago, Tanzania, we found that the diversity and composition of ostracod assemblages as controlled by benthic habitats and human impacts were indicative of overall reef health, and we highlighted the usefulness of ostracods as a model proxy to monitor and understand the degradation of reef ecosystems from the coral-dominated phase to the algae-dominated phase.
Giulia Faucher, Mathias Haunost, Allanah Joy Paul, Anne Ulrike Christiane Tietz, and Ulf Riebesell
EGUsphere, https://doi.org/10.5194/egusphere-2024-2201, https://doi.org/10.5194/egusphere-2024-2201, 2024
Short summary
Short summary
OAE is being evaluated for its capacity to absorb atmospheric CO2 in the ocean, storing it long-term to mitigate climate change. As researchers plan for field tests to gain practical insights into OAE, sharing knowledge on its environmental impact on marine ecosystems is urgent. Our study examined NaOH-induced alkalinity increases on Emiliania huxleyi, a key coccolithophore species. We found that to prevent negative impacts on this species, the increase in ΔTA should not exceed 600 µmol kg-1.
Julien Richirt, Satoshi Okada, Yoshiyuki Ishitani, Katsuyuki Uematsu, Akihiro Tame, Kaya Oda, Noriyuki Isobe, Toyoho Ishimura, Masashi Tsuchiya, and Hidetaka Nomaki
Biogeosciences, 21, 3271–3288, https://doi.org/10.5194/bg-21-3271-2024, https://doi.org/10.5194/bg-21-3271-2024, 2024
Short summary
Short summary
We report the first benthic foraminifera with a composite test (i.e. shell) made of opal, which coats the inner part of the calcitic layer. Using comprehensive techniques, we describe the morphology and the composition of this novel opal layer and provide evidence that the opal is precipitated by the foraminifera itself. We explore the potential precipitation process and function(s) of this composite test and further discuss the possible implications for palaeoceanographic reconstructions.
Said Mohamed Hashim, Beth Wangui Waweru, and Agnes Muthumbi
Biogeosciences, 21, 2995–3006, https://doi.org/10.5194/bg-21-2995-2024, https://doi.org/10.5194/bg-21-2995-2024, 2024
Short summary
Short summary
The study investigates the impact of decreasing oxygen in the ocean on macrofaunal communities using the BUS as an example. It identifies distinct shifts in community composition and feeding guilds across oxygen zones, with nematodes dominating dysoxic areas. These findings underscore the complex responses of benthic organisms to oxygen gradients, crucial for understanding ecosystem dynamics in hypoxic environments and their implications for marine biodiversity and sustainability.
Tanguy Soulié, Francesca Vidussi, Justine Courboulès, Marie Heydon, Sébastien Mas, Florian Voron, Carolina Cantoni, Fabien Joux, and Behzad Mostajir
Biogeosciences, 21, 1887–1902, https://doi.org/10.5194/bg-21-1887-2024, https://doi.org/10.5194/bg-21-1887-2024, 2024
Short summary
Short summary
Due to climate change, it is projected that extreme rainfall events, which bring terrestrial matter into coastal seas, will occur more frequently in the Mediterranean region. To test the effects of runoffs of terrestrial matter on plankton communities from Mediterranean coastal waters, an in situ mesocosm experiment was conducted. The simulated runoff affected key processes mediated by plankton, such as primary production and respiration, suggesting major consequences of such events.
Chueh-Chen Tung, Yu-Shih Lin, Jian-Xiang Liao, Tzu-Hsuan Tu, James T. Liu, Li-Hung Lin, Pei-Ling Wang, and Chih-Lin Wei
Biogeosciences, 21, 1729–1756, https://doi.org/10.5194/bg-21-1729-2024, https://doi.org/10.5194/bg-21-1729-2024, 2024
Short summary
Short summary
This study contrasts seabed food webs between a river-fed, high-energy canyon and the nearby slope. We show higher organic carbon (OC) flows through the canyon than the slope. Bacteria dominated the canyon, while seabed fauna contributed more to the slope food web. Due to frequent perturbation, the canyon had a lower faunal stock and OC recycling. Only 4 % of the seabed OC flux enters the canyon food web, suggesting a significant role of the river-fed canyon in transporting OC to the deep sea.
Joost de Vries, Fanny Monteiro, Gerald Langer, Colin Brownlee, and Glen Wheeler
Biogeosciences, 21, 1707–1727, https://doi.org/10.5194/bg-21-1707-2024, https://doi.org/10.5194/bg-21-1707-2024, 2024
Short summary
Short summary
Calcifying phytoplankton (coccolithophores) utilize a life cycle in which they can grow and divide into two different phases. These two phases (HET and HOL) vary in terms of their physiology and distributions, with many unknowns about what the key differences are. Using a combination of lab experiments and model simulations, we find that nutrient storage is a critical difference between the two phases and that this difference allows them to inhabit different nitrogen input regimes.
Theodor Kindeberg, Karl Michael Attard, Jana Hüller, Julia Müller, Cintia Organo Quintana, and Eduardo Infantes
Biogeosciences, 21, 1685–1705, https://doi.org/10.5194/bg-21-1685-2024, https://doi.org/10.5194/bg-21-1685-2024, 2024
Short summary
Short summary
Seagrass meadows are hotspots for biodiversity and productivity, and planting seagrass is proposed as a tool for mitigating biodiversity loss and climate change. We assessed seagrass planted in different years and found that benthic oxygen and carbon fluxes increased as the seabed developed from bare sediments to a mature seagrass meadow. This increase was partly linked to the diversity of colonizing algae which increased the light-use efficiency of the seagrass meadow community.
Kristin Jones, Lenaïg Hemery, Nicholas Ward, Peter Regier, Mallory Ringham, and Matthew Eisaman
EGUsphere, https://doi.org/10.5194/egusphere-2024-972, https://doi.org/10.5194/egusphere-2024-972, 2024
Short summary
Short summary
Ocean alkalinity enhancement is a marine carbon dioxide removal method that aims to mitigate the effects of climate change. This method causes localized increases in ocean pH, but the biological impacts of such changes are not well known. Our study investigated the response of two nearshore invertebrate species to increased pH and found the sea hare to be sensitive to pH changes, while the isopod was more resilient. Understanding interactions with biology is important as this field expands.
Renée P. Schoeman, Christine Erbe, and Robert D. McCauley
EGUsphere, https://doi.org/10.5194/egusphere-2024-859, https://doi.org/10.5194/egusphere-2024-859, 2024
Short summary
Short summary
This study used ocean glider data to extend previously established relationships between surface and depth-integrated chlorophyll to an intermittent-oligotrophic continental margin. Relationships were established for stratified summer-transition months, stratified winter months, and mixed water columns. Integrations over twice the euphotic zone depth best captured Deep Chlorophyll Maxima contributing to a seasonal increase in depth-integrated chlorophyll likely relevant to higher trophic levels.
Anna-Selma van der Kaaden, Sandra R. Maier, Siluo Chen, Laurence H. De Clippele, Evert de Froe, Theo Gerkema, Johan van de Koppel, Furu Mienis, Christian Mohn, Max Rietkerk, Karline Soetaert, and Dick van Oevelen
Biogeosciences, 21, 973–992, https://doi.org/10.5194/bg-21-973-2024, https://doi.org/10.5194/bg-21-973-2024, 2024
Short summary
Short summary
Combining hydrodynamic simulations and annotated videos, we separated which hydrodynamic variables that determine reef cover are engineered by cold-water corals and which are not. Around coral mounds, hydrodynamic zones seem to create a typical reef zonation, restricting corals from moving deeper (the expected response to climate warming). But non-engineered downward velocities in winter (e.g. deep winter mixing) seem more important for coral reef growth than coral engineering.
Xiaoke Xin, Giulia Faucher, and Ulf Riebesell
Biogeosciences, 21, 761–772, https://doi.org/10.5194/bg-21-761-2024, https://doi.org/10.5194/bg-21-761-2024, 2024
Short summary
Short summary
Ocean alkalinity enhancement (OAE) is a promising approach to remove CO2 by accelerating natural rock weathering. However, some of the alkaline substances contain trace metals which could be toxic to marine life. By exposing three representative phytoplankton species to Ni released from alkaline materials, we observed varying responses of phytoplankton to nickel concentrations, suggesting caution should be taken and toxic thresholds should be avoided in OAE with Ni-rich materials.
Olmo Miguez-Salas, Angelika Brandt, Henry Knauber, and Torben Riehl
Biogeosciences, 21, 641–655, https://doi.org/10.5194/bg-21-641-2024, https://doi.org/10.5194/bg-21-641-2024, 2024
Short summary
Short summary
In the deep sea, the interaction between benthic fauna (tracemakers) and substrate can be preserved as traces (i.e. lebensspuren), which are common features of seafloor landscapes, rendering them promising proxies for inferring biodiversity from marine images. No general correlation was observed between traces and benthic fauna. However, a local correlation was observed between specific stations depending on unknown tracemakers, tracemaker behaviour, and lebensspuren morphotypes.
Cale A. Miller, Pierre Urrutti, Jean-Pierre Gattuso, Steeve Comeau, Anaïs Lebrun, Samir Alliouane, Robert W. Schlegel, and Frédéric Gazeau
Biogeosciences, 21, 315–333, https://doi.org/10.5194/bg-21-315-2024, https://doi.org/10.5194/bg-21-315-2024, 2024
Short summary
Short summary
This work describes an experimental system that can replicate and manipulate environmental conditions in marine or aquatic systems. Here, we show how the temperature and salinity of seawater delivered from a fjord is manipulated to experimental tanks on land. By constantly monitoring temperature and salinity in each tank via a computer program, the system continuously adjusts automated flow valves to ensure the seawater in each tank matches the targeted experimental conditions.
Rachel A. Kruft Welton, George Hoppit, Daniela N. Schmidt, James D. Witts, and Benjamin C. Moon
Biogeosciences, 21, 223–239, https://doi.org/10.5194/bg-21-223-2024, https://doi.org/10.5194/bg-21-223-2024, 2024
Short summary
Short summary
We conducted a meta-analysis of known experimental literature examining how marine bivalve growth rates respond to climate change. Growth is usually negatively impacted by climate change. Bivalve eggs/larva are generally more vulnerable than either juveniles or adults. Available data on the bivalve response to climate stressors are biased towards early growth stages (commercially important in the Global North), and many families have only single experiments examining climate change impacts.
Vincent Mouchi, Christophe Pecheyran, Fanny Claverie, Cécile Cathalot, Marjolaine Matabos, Yoan Germain, Olivier Rouxel, Didier Jollivet, Thomas Broquet, and Thierry Comtet
Biogeosciences, 21, 145–160, https://doi.org/10.5194/bg-21-145-2024, https://doi.org/10.5194/bg-21-145-2024, 2024
Short summary
Short summary
The impact of deep-sea mining will depend critically on the ability of larval dispersal of hydrothermal mollusks to connect and replenish natural populations. However, assessing connectivity is extremely challenging, especially in the deep sea. Here, we investigate the potential of using the chemical composition of larval shells to discriminate larval origins between multiple hydrothermal sites in the southwest Pacific. Our results confirm that this method can be applied with high accuracy.
Anna-Marie Winter, Nadezda Vasilyeva, and Artem Vladimirov
Biogeosciences, 20, 3683–3716, https://doi.org/10.5194/bg-20-3683-2023, https://doi.org/10.5194/bg-20-3683-2023, 2023
Short summary
Short summary
There is an increasing number of fish in poor state, and many do not recover, even when fishing pressure is ceased. An Allee effect can hinder population recovery because it suppresses the fish's productivity at low abundance. With a model fitted to 17 Atlantic cod stocks, we find that ocean warming and fishing can cause an Allee effect. If present, the Allee effect hinders fish recovery. This shows that Allee effects are dynamic, not uncommon, and calls for precautionary management measures.
Afrah Alothman, Daffne López-Sandoval, Carlos M. Duarte, and Susana Agustí
Biogeosciences, 20, 3613–3624, https://doi.org/10.5194/bg-20-3613-2023, https://doi.org/10.5194/bg-20-3613-2023, 2023
Short summary
Short summary
This study investigates bacterial dissolved inorganic carbon (DIC) fixation in the Red Sea, an oligotrophic ecosystem, using stable-isotope labeling and spectroscopy. The research reveals that bacterial DIC fixation significantly contributes to total DIC fixation, in the surface and deep water. The study demonstrates that as primary production decreases, the role of bacterial DIC fixation increases, emphasizing its importance with photosynthesis in estimating oceanic carbon dioxide production.
Arianna Zampollo, Thomas Cornulier, Rory O'Hara Murray, Jacqueline Fiona Tweddle, James Dunning, and Beth E. Scott
Biogeosciences, 20, 3593–3611, https://doi.org/10.5194/bg-20-3593-2023, https://doi.org/10.5194/bg-20-3593-2023, 2023
Short summary
Short summary
This paper highlights the use of the bottom mixed layer depth (BMLD: depth between the end of the pycnocline and the mixed layer below) to investigate subsurface Chlorophyll a (a proxy of primary production) in temperate stratified shelf waters. The strict correlation between subsurface Chl a and BMLD becomes relevant in shelf-productive waters where multiple stressors (e.g. offshore infrastructure) will change the stratification--mixing balance and related carbon fluxes.
Marco Fusi, Sylvain Rigaud, Giovanna Guadagnin, Alberto Barausse, Ramona Marasco, Daniele Daffonchio, Julie Régis, Louison Huchet, Capucine Camin, Laura Pettit, Cristina Vina-Herbon, and Folco Giomi
Biogeosciences, 20, 3509–3521, https://doi.org/10.5194/bg-20-3509-2023, https://doi.org/10.5194/bg-20-3509-2023, 2023
Short summary
Short summary
Oxygen availability in marine water and freshwater is very variable at daily and seasonal scales. The dynamic nature of oxygen fluctuations has important consequences for animal and microbe physiology and ecology, yet it is not fully understood. In this paper, we showed the heterogeneous nature of the aquatic oxygen landscape, which we defined here as the
oxyscape, and we addressed the importance of considering the oxyscape in the modelling and managing of aquatic ecosystems.
Anne L. Morée, Tayler M. Clarke, William W. L. Cheung, and Thomas L. Frölicher
Biogeosciences, 20, 2425–2454, https://doi.org/10.5194/bg-20-2425-2023, https://doi.org/10.5194/bg-20-2425-2023, 2023
Short summary
Short summary
Ocean temperature and oxygen shape marine habitats together with species’ characteristics. We calculated the impacts of projected 21st-century warming and oxygen loss on the contemporary habitat volume of 47 marine species and described the drivers of these impacts. Most species lose less than 5 % of their habitat at 2 °C of global warming, but some species incur losses 2–3 times greater than that. We also calculate which species may be most vulnerable to climate change and why this is the case.
Wojciech Majewski, Witold Szczuciński, and Andrew J. Gooday
Biogeosciences, 20, 523–544, https://doi.org/10.5194/bg-20-523-2023, https://doi.org/10.5194/bg-20-523-2023, 2023
Short summary
Short summary
We studied foraminifera living in the fjords of South Georgia, a sub-Antarctic island sensitive to climate change. As conditions in water and on the seafloor vary, different associations of these microorganisms dominate far inside, in the middle, and near fjord openings. Assemblages in inner and middle parts of fjords are specific to South Georgia, but they may become widespread with anticipated warming. These results are important for interpretating fossil records and monitoring future change.
Allanah Joy Paul, Lennart Thomas Bach, Javier Arístegui, Elisabeth von der Esch, Nauzet Hernández-Hernández, Jonna Piiparinen, Laura Ramajo, Kristian Spilling, and Ulf Riebesell
Biogeosciences, 19, 5911–5926, https://doi.org/10.5194/bg-19-5911-2022, https://doi.org/10.5194/bg-19-5911-2022, 2022
Short summary
Short summary
We investigated how different deep water chemistry and biology modulate the response of surface phytoplankton communities to upwelling in the Peruvian coastal zone. Our results show that the most influential drivers were the ratio of inorganic nutrients (N : P) and the microbial community present in upwelling source water. These led to unexpected and variable development in the phytoplankton assemblage that could not be predicted by the amount of inorganic nutrients alone.
Hanna M. Kauko, Philipp Assmy, Ilka Peeken, Magdalena Różańska-Pluta, Józef M. Wiktor, Gunnar Bratbak, Asmita Singh, Thomas J. Ryan-Keogh, and Sebastien Moreau
Biogeosciences, 19, 5449–5482, https://doi.org/10.5194/bg-19-5449-2022, https://doi.org/10.5194/bg-19-5449-2022, 2022
Short summary
Short summary
This article studies phytoplankton (microscopic
plantsin the ocean capable of photosynthesis) in Kong Håkon VII Hav in the Southern Ocean. Different species play different roles in the ecosystem, and it is therefore important to assess the species composition. We observed that phytoplankton blooms in this area are formed by large diatoms with strong silica armors, which can lead to high silica (and sometimes carbon) export to depth and be important prey for krill.
Chloe Carbonne, Steeve Comeau, Phoebe T. W. Chan, Keyla Plichon, Jean-Pierre Gattuso, and Núria Teixidó
Biogeosciences, 19, 4767–4777, https://doi.org/10.5194/bg-19-4767-2022, https://doi.org/10.5194/bg-19-4767-2022, 2022
Short summary
Short summary
For the first time, our study highlights the synergistic effects of a 9-month warming and acidification combined stress on the early life stages of a Mediterranean azooxanthellate coral, Astroides calycularis. Our results predict a decrease in dispersion, settlement, post-settlement linear extention, budding and survival under future global change and that larvae and recruits of A. calycularis are stages of interest for this Mediterranean coral resistance, resilience and conservation.
Iris E. Hendriks, Anna Escolano-Moltó, Susana Flecha, Raquel Vaquer-Sunyer, Marlene Wesselmann, and Núria Marbà
Biogeosciences, 19, 4619–4637, https://doi.org/10.5194/bg-19-4619-2022, https://doi.org/10.5194/bg-19-4619-2022, 2022
Short summary
Short summary
Seagrasses are marine plants with the capacity to act as carbon sinks due to their high primary productivity, using carbon for growth. This capacity can play a key role in climate change mitigation. We compiled and published data showing that two Mediterranean seagrass species have different metabolic rates, while the study method influences the rates of the measurements. Most communities act as carbon sinks, while the western basin might be more productive than the eastern Mediterranean.
Raúl Tapia, Sze Ling Ho, Hui-Yu Wang, Jeroen Groeneveld, and Mahyar Mohtadi
Biogeosciences, 19, 3185–3208, https://doi.org/10.5194/bg-19-3185-2022, https://doi.org/10.5194/bg-19-3185-2022, 2022
Short summary
Short summary
We report census counts of planktic foraminifera in depth-stratified plankton net samples off Indonesia. Our results show that the vertical distribution of foraminifera species routinely used in paleoceanographic reconstructions varies in hydrographically distinct regions, likely in response to food availability. Consequently, the thermal gradient based on mixed layer and thermocline dwellers also differs for these regions, suggesting potential implications for paleoceanographic reconstructions.
Ricardo González-Gil, Neil S. Banas, Eileen Bresnan, and Michael R. Heath
Biogeosciences, 19, 2417–2426, https://doi.org/10.5194/bg-19-2417-2022, https://doi.org/10.5194/bg-19-2417-2022, 2022
Short summary
Short summary
In oceanic waters, the accumulation of phytoplankton biomass in winter, when light still limits growth, is attributed to a decrease in grazing as the mixed layer deepens. However, in coastal areas, it is not clear whether winter biomass can accumulate without this deepening. Using 21 years of weekly data, we found that in the Scottish coastal North Sea, the seasonal increase in light availability triggers the accumulation of phytoplankton biomass in winter, when light limitation is strongest.
Birgit Koehler, Mårten Erlandsson, Martin Karlsson, and Lena Bergström
Biogeosciences, 19, 2295–2312, https://doi.org/10.5194/bg-19-2295-2022, https://doi.org/10.5194/bg-19-2295-2022, 2022
Short summary
Short summary
Understanding species richness patterns remains a challenge for biodiversity management. We estimated fish species richness over a coastal salinity gradient (3–32) with a method that allowed comparing data from various sources. Species richness was 3-fold higher at high vs. low salinity, and salinity influenced species’ habitat preference, mobility and feeding type. If climate change causes upper-layer freshening of the Baltic Sea, further shifts along the identified patterns may be expected.
Uri Obolski, Thomas Wichard, Alvaro Israel, Alexander Golberg, and Alexander Liberzon
Biogeosciences, 19, 2263–2271, https://doi.org/10.5194/bg-19-2263-2022, https://doi.org/10.5194/bg-19-2263-2022, 2022
Short summary
Short summary
The algal genus Ulva plays a major role in coastal ecosystems worldwide and is a promising prospect as an seagriculture crop. A substantial hindrance to cultivating Ulva arises from sudden sporulation, leading to biomass loss. This process is not yet well understood. Here, we characterize the dynamics of Ulva growth, considering the potential impact of sporulation inhibitors, using a mathematical model. Our findings are an essential step towards understanding the dynamics of Ulva growth.
Emanuela Fanelli, Samuele Menicucci, Sara Malavolti, Andrea De Felice, and Iole Leonori
Biogeosciences, 19, 1833–1851, https://doi.org/10.5194/bg-19-1833-2022, https://doi.org/10.5194/bg-19-1833-2022, 2022
Short summary
Short summary
Zooplankton play a key role in marine ecosystems, forming the base of the marine food web and a link between primary producers and higher-order consumers, such as fish. This aspect is crucial in the Adriatic basin, one of the most productive and overexploited areas of the Mediterranean Sea. A better understanding of community and food web structure and their response to water mass changes is essential under a global warming scenario, as zooplankton are sensitive to climate change.
Masaya Yoshikai, Takashi Nakamura, Rempei Suwa, Sahadev Sharma, Rene Rollon, Jun Yasuoka, Ryohei Egawa, and Kazuo Nadaoka
Biogeosciences, 19, 1813–1832, https://doi.org/10.5194/bg-19-1813-2022, https://doi.org/10.5194/bg-19-1813-2022, 2022
Short summary
Short summary
This study presents a new individual-based vegetation model to investigate salinity control on mangrove productivity. The model incorporates plant hydraulics and tree competition and predicts unique and complex patterns of mangrove forest structures that vary across soil salinity gradients. The presented model does not hold an empirical expression of salinity influence on productivity and thus may provide a better understanding of mangrove forest dynamics in future climate change.
Coulson A. Lantz, William Leggat, Jessica L. Bergman, Alexander Fordyce, Charlotte Page, Thomas Mesaglio, and Tracy D. Ainsworth
Biogeosciences, 19, 891–906, https://doi.org/10.5194/bg-19-891-2022, https://doi.org/10.5194/bg-19-891-2022, 2022
Short summary
Short summary
Coral bleaching events continue to drive the degradation of coral reefs worldwide. In this study we measured rates of daytime coral reef community calcification and photosynthesis during a reef-wide bleaching event. Despite a measured decline in coral health across several taxa, there was no change in overall daytime community calcification and photosynthesis. These findings highlight potential limitations of these community-level metrics to reflect actual changes in coral health.
Hyewon Heather Kim, Jeff S. Bowman, Ya-Wei Luo, Hugh W. Ducklow, Oscar M. Schofield, Deborah K. Steinberg, and Scott C. Doney
Biogeosciences, 19, 117–136, https://doi.org/10.5194/bg-19-117-2022, https://doi.org/10.5194/bg-19-117-2022, 2022
Short summary
Short summary
Heterotrophic marine bacteria are tiny organisms responsible for taking up organic matter in the ocean. Using a modeling approach, this study shows that characteristics (taxonomy and physiology) of bacteria are associated with a subset of ecological processes in the coastal West Antarctic Peninsula region, a system susceptible to global climate change. This study also suggests that bacteria will become more active, in particular large-sized cells, in response to changing climates in the region.
Alice E. Webb, Didier M. de Bakker, Karline Soetaert, Tamara da Costa, Steven M. A. C. van Heuven, Fleur C. van Duyl, Gert-Jan Reichart, and Lennart J. de Nooijer
Biogeosciences, 18, 6501–6516, https://doi.org/10.5194/bg-18-6501-2021, https://doi.org/10.5194/bg-18-6501-2021, 2021
Short summary
Short summary
The biogeochemical behaviour of shallow reef communities is quantified to better understand the impact of habitat degradation and species composition shifts on reef functioning. The reef communities investigated barely support reef functions that are usually ascribed to conventional coral reefs, and the overall biogeochemical behaviour is found to be similar regardless of substrate type. This suggests a decrease in functional diversity which may therefore limit services provided by this reef.
Emmanuel Devred, Andrea Hilborn, and Cornelia Elizabeth den Heyer
Biogeosciences, 18, 6115–6132, https://doi.org/10.5194/bg-18-6115-2021, https://doi.org/10.5194/bg-18-6115-2021, 2021
Short summary
Short summary
A theoretical model of grey seal seasonal abundance on Sable Island (SI) coupled with chlorophyll-a concentration [chl-a] measured by satellite revealed the impact of seal nitrogen fertilization on the surrounding waters of SI, Canada. The increase in seals from about 100 000 in 2003 to about 360 000 in 2018 during the breeding season is consistent with an increase in [chl-a] leeward of SI. The increase in seal abundance explains 8 % of the [chl-a] increase.
Julie Meilland, Michael Siccha, Maike Kaffenberger, Jelle Bijma, and Michal Kucera
Biogeosciences, 18, 5789–5809, https://doi.org/10.5194/bg-18-5789-2021, https://doi.org/10.5194/bg-18-5789-2021, 2021
Short summary
Short summary
Planktonic foraminifera population dynamics has long been assumed to be controlled by synchronous reproduction and ontogenetic vertical migration (OVM). Due to contradictory observations, this concept became controversial. We here test it in the Atlantic ocean for four species of foraminifera representing the main clades. Our observations support the existence of synchronised reproduction and OVM but show that more than half of the population does not follow the canonical trajectory.
Federica Maggioni, Mireille Pujo-Pay, Jérome Aucan, Carlo Cerrano, Barbara Calcinai, Claude Payri, Francesca Benzoni, Yves Letourneur, and Riccardo Rodolfo-Metalpa
Biogeosciences, 18, 5117–5140, https://doi.org/10.5194/bg-18-5117-2021, https://doi.org/10.5194/bg-18-5117-2021, 2021
Short summary
Short summary
Based on current experimental evidence, climate change will affect up to 90 % of coral reefs worldwide. The originality of this study arises from our recent discovery of an exceptional study site where environmental conditions (temperature, pH, and oxygen) are even worse than those forecasted for the future.
While these conditions are generally recognized as unfavorable for marine life, we found a rich and abundant coral reef thriving under such extreme environmental conditions.
Nisan Sariaslan and Martin R. Langer
Biogeosciences, 18, 4073–4090, https://doi.org/10.5194/bg-18-4073-2021, https://doi.org/10.5194/bg-18-4073-2021, 2021
Short summary
Short summary
Analyses of foraminiferal assemblages from the Mamanguape mangrove estuary (northern Brazil) revealed highly diverse, species-rich, and structurally complex biotas. The atypical fauna resembles shallow-water offshore assemblages and are interpreted to be the result of highly saline ocean waters penetrating deep into the estuary. The findings contrast with previous studies, have implications for the fossil record, and provide novel perspectives for reconstructing mangrove environments.
Jutta E. Wollenburg, Jelle Bijma, Charlotte Cremer, Ulf Bickmeyer, and Zora Mila Colomba Zittier
Biogeosciences, 18, 3903–3915, https://doi.org/10.5194/bg-18-3903-2021, https://doi.org/10.5194/bg-18-3903-2021, 2021
Short summary
Short summary
Cultured at in situ high-pressure conditions Cibicides and Cibicidoides taxa develop lasting ectoplasmic structures that cannot be retracted or resorbed. An ectoplasmic envelope surrounds their test and may protect the shell, e.g. versus carbonate aggressive bottom water conditions. Ectoplasmic roots likely anchor the specimens in areas of strong bottom water currents, trees enable them to elevate themselves above ground, and twigs stabilize and guide the retractable pseudopodial network.
Kumar Nimit
Biogeosciences, 18, 3631–3635, https://doi.org/10.5194/bg-18-3631-2021, https://doi.org/10.5194/bg-18-3631-2021, 2021
Short summary
Short summary
The Indian Ocean Rim hosts many of the underdeveloped and emerging economies that depend on ocean resources for the livelihood of millions. Operational ocean information services cater to the requirements of resource managers and end-users to efficiently harness resources, mitigate threats and ensure safety. This paper outlines existing tools and explores the ongoing research that has the potential to convert the findings into operational services in the near- to midterm.
Finn Mielck, Rune Michaelis, H. Christian Hass, Sarah Hertel, Caroline Ganal, and Werner Armonies
Biogeosciences, 18, 3565–3577, https://doi.org/10.5194/bg-18-3565-2021, https://doi.org/10.5194/bg-18-3565-2021, 2021
Short summary
Short summary
Marine sand mining is becoming more and more important to nourish fragile coastlines that face global change. We investigated the largest sand extraction site in the German Bight. The study reveals that after more than 35 years of mining, the excavation pits are still detectable on the seafloor while the sediment composition has largely changed. The organic communities living in and on the seafloor were strongly decimated, and no recovery is observable towards previous conditions.
France Van Wambeke, Elvira Pulido, Philippe Catala, Julie Dinasquet, Kahina Djaoudi, Anja Engel, Marc Garel, Sophie Guasco, Barbara Marie, Sandra Nunige, Vincent Taillandier, Birthe Zäncker, and Christian Tamburini
Biogeosciences, 18, 2301–2323, https://doi.org/10.5194/bg-18-2301-2021, https://doi.org/10.5194/bg-18-2301-2021, 2021
Short summary
Short summary
Michaelis–Menten kinetics were determined for alkaline phosphatase, aminopeptidase and β-glucosidase in the Mediterranean Sea. Although the ectoenzymatic-hydrolysis contribution to heterotrophic prokaryotic needs was high in terms of N, it was low in terms of C. This study points out the biases in interpretation of the relative differences in activities among the three tested enzymes in regard to the choice of added concentrations of fluorogenic substrates.
Oscar E. Romero, Simon Ramondenc, and Gerhard Fischer
Biogeosciences, 18, 1873–1891, https://doi.org/10.5194/bg-18-1873-2021, https://doi.org/10.5194/bg-18-1873-2021, 2021
Short summary
Short summary
Upwelling intensity along NW Africa varies on the interannual to decadal timescale. Understanding its changes is key for the prediction of future changes of CO2 sequestration in the northeastern Atlantic. Based on a multiyear (1988–2009) sediment trap experiment at the site CBmeso, fluxes and the species composition of the diatom assemblage are presented. Our data help in establishing the scientific basis for forecasting and modeling future states of this ecosystem and its decadal changes.
Cited articles
Agarwala, R., Barrett, T., Beck, J., Benson, D. A., Bollin, C., Bolton, E.,
Bourexis, D., Brister, J. R., Bryant, S. H., Canese, K., Cavanaugh, M.,
Charowhas, C., Clark, K., Dondoshansky, I., Feolo, M., Fitzpatrick, L.,
Funk, K., Geer, L. Y., Gorelenkov, V., Graeff, A., Hlavina, W., Holmes, B.,
Johnson, M., Kattman, B., Khotomlianski, V., Kimchi, A., Kimelman, M.,
Kimura, M., Kitts, P., Klimke, W., Kotliarov, A., Krasnov, S., Kuznetsov,
A., Landrum, M. J., Landsman, D., Lathrop, S., Lee, J. M., Leubsdorf, C.,
Lu, Z., Madden, T. L., Marchler-Bauer, A., Malheiro, A., Meric, P.,
Karsch-Mizrachi, I., Mnev, A., Murphy, T., Orris, R., Ostell, J.,
O'Sullivan, C., Palanigobu, V., Panchenko, A. R., Phan, L., Pierov, B.,
Pruitt, K. D., Rodarmer, K., Sayers, E. W., Schneider, V., Schoch, C. L.,
Schuler, G. D., Sherry, S. T., Siyan, K., Soboleva, A., Soussov, V.,
Starchenko, G., Tatusova, T. A., Thibaud-Nissen, F., Todorov, K., Trawick,
B. W., Vakatov, D., Ward, M., Yaschenko, E., Zasypkin, A., and Zbicz, K.:
Database resources of the National Center for Biotechnology Information,
Nucl. Acids Res., 46, D8–D13, https://doi.org/10.1093/nar/gkx1095, 2018.
Amaral-Zettler, L. A., McCliment, E. A., Ducklow, H. W., and Huse, S. M.: A
method for studying protistan diversity using massively parallel sequencing
of V9 hypervariable regions of small-subunit ribosomal RNA Genes, PLoS One,
4, 1–9, https://doi.org/10.1371/journal.pone.0006372, 2009.
Amaral-Zettler, L. A., Bauer, M., Berg-Lyons, D., Betley, J., Caporaso, J.
G., Ducklow, H. W., Fierer, N., Fraser, L., Gilbert, J. A., Gormley, N.,
Huntley, J., Huse, S. M., Jansson, J. K., Jarman, S. N., Knight, R., Lau, C.
L., and Walters, W. A.: EMP 18S Illumina Amplicon Protocol, protocols.io,
https://doi.org/10.17504/protocols.io.nuvdew6, 2018.
Ayón, P., Swartzman, G., Bertrand, A., Gutiérrez, M., and Bertrand,
S.: Zooplankton and forage fish species off Peru: Large-scale bottom-up
forcing and local-scale depletion, Prog. Oceanogr., 79, 208–214,
https://doi.org/10.1016/j.pocean.2008.10.023, 2008.
Bach, L. T., Paul, A. J., Boxhammer, T., von der Esch, E., Graco, M.,
Schulz, K. G., Achterberg, E., Aguayo, P., Arístegui, J., Ayón, P.,
Baños, I., Bernales, A., Boegeholz, A. S., Chavez, F., Chavez, G., Chen,
S. M., Doering, K., Filella, A., Fischer, M., Grasse, P., Haunost, M.,
Hennke, J., Hernández-Hernández, N., Hopwood, M., Igarza, M.,
Kalter, V., Kittu, L., Kohnert, P., Ledesma, J., Lieberum, C., Lischka, S.,
Löscher, C., Ludwig, A., Mendoza, U., Meyer, J., Meyer, J., Minutolo,
F., Cortes, J. O., Piiparinen, J., Sforna, C., Spilling, K., Sanchez, S.,
Spisla, C., Sswat, M., Moreira, M. Z., and Riebesell, U.: Factors
controlling plankton community production, export flux, and particulate
matter stoichiometry in the coastal upwelling system off Peru,
Biogeosciences, 17, 4831–4852, https://doi.org/10.5194/bg-17-4831-2020,
2020.
Bachy, C., Wittmers, F., Muschiol, J., Hamilton, M., Henrissat, B., and
Worden, A. Z.: The Land-Sea Connection: Insights Into the Plant Lineage from
a Green Algal Perspective, Annu. Rev. Plant Biol., 73, 585–616,
https://doi.org/10.1146/annurev-arplant-071921-100530, 2022.
Baker, P., Minzlaff, U., Schoenle, A., Schwabe, E., Hohlfeld, M., Jeuck, A.,
Brenke, N., Prausse, D., Rothenbeck, M., Brix, S., Frutos, I., Jörger,
K. M., Neusser, T. P., Koppelmann, R., Devey, C., Brandt, A., and Arndt, H.:
Potential contribution of surface-dwelling Sargassum algae to deep-sea
ecosystems in the southern North Atlantic, Deep-Sea Res. Pt. II, 148, 21–34, https://doi.org/10.1016/j.dsr2.2017.10.002, 2018.
Berry, O., Bulman, C., Bunce, M., Coghlan, M., Murray, D. C., and Ward, R.
D.: Comparison of morphological and DNA metabarcoding analyses of diets in
exploited marine fishes, Mar. Ecol. Prog. Ser., 540, 167–181,
https://doi.org/10.3354/meps11524, 2015.
Boenigk, J. and Arndt, H.: Particle handling during interception feeding by
four species of heterotrophic nanoflagellates, J. Eukaryot. Microbiol., 47,
350–358, https://doi.org/10.1111/j.1550-7408.2000.tb00060.x, 2000.
Boussarie, G., Bakker, J., Wangensteen, O. S., Mariani, S., Bonnin, L.,
Juhel, J. B., Kiszka, J. J., Kulbicki, M., Manel, S., Robbins, W. D.,
Vigliola, L., and Mouillot, D.: Environmental DNA illuminates the dark
diversity of sharks, Sci. Adv., 4, 5, https://doi.org/10.1126/sciadv.aap9661,
2018.
Buchan, A., LeCleir, G. R., Gulvik, C. A., and González, J. M.: Master
recyclers: features and functions of bacteria associated with phytoplankton
blooms, Nat. Rev. Microbiol., 12, 686–698, https://doi.org/10.1038/nrmicro3326, 2014.
Callahan, B. J., McMurdie, P. J., Rosen, M. J., Han, A. W., Johnson, A. J.
A., and Holmes, S. P.: DADA2: High-resolution sample inference from Illumina
amplicon data, Nat. Methods, 13, 581–583,
https://doi.org/10.1038/nmeth.3869, 2016.
Camacho, C., Coulouris, G., Avagyan, V., Ma, N., Papadopoulos, J., Bealer,
K., and Madden, T. L.: BLAST+: Architecture and applications, BMC
Bioinformatics, 10, 1–9, https://doi.org/10.1186/1471-2105-10-421, 2009.
Carr, M. E.: Estimation of potential productivity in Eastern Boundary
Currents using remote sensing, Deep-Sea Res. Pt. II, 49,
59–80, https://doi.org/10.1016/S0967-0645(01)00094-7, 2001.
Carr, M. E. and Kearns, E. J.: Production regimes in four Eastern Boundary
Current systems, Deep-Sea Res. Pt. II, 50, 3199–3221,
https://doi.org/10.1016/j.dsr2.2003.07.015, 2003.
Chavez, F. P. and Messié, M.: A comparison of Eastern Boundary Upwelling
Ecosystems, Prog. Oceanogr., 83, 80–96,
https://doi.org/10.1016/j.pocean.2009.07.032, 2009.
Chavez, F. P., Pennington, J. T., Michisaki, R. P., Blum, M., Chavez, G. M.,
Friederich, J., Jones, B., Herlien, R., Kieft, B., and Hobson, B.: Climate
variability and change: response of a coastal ocean ecosystem, Oceanography,
30, 128–145, 2017.
Choi, C. J., Jimenez, V., Needham, D. M., Poirier, C., Bachy, C., Alexander, H., Wilken, S., Chavez, F. P., Sudek, S., Giovannoni, S. J., and Worden, A. Z.: Seasonal and geographical transitions in eukaryotic phytoplankton
community structure in the Atlantic and Pacific Oceans, Front. Microbiol., 11, 542372, https://doi.org/10.3389/fmicb.2020.542372, 2020.
Closek, C., Djurhuus, A., Pitz, K., Kelly, R., Michisaki, R., Walz, K., Starks, H., Chavez, F., Boehm, A., and Breitbart, M.: Environmental DNA (eDNA) 18S metabarcoding Illumina MiSeq NGS PCR Protocol, protocols.io,
https://doi.org/10.17504/protocols.io.n2vdge6, 2018a.
Closek, C., Djurhuus, A., Pitz, K., Kelly, R., Michisaki, R., Walz, K., Starks, H., Chavez, F., Boehm, A., and Breitbart, M.: Environmental DNA (eDNA) COI metabarcoding Illumina MiSeq NGS PCR Protocol, protocols.io,
https://doi.org/10.17504/protocols.io.mwnc7de, 2018b.
Coats, D. W.: Duboscquella cachoni N. Sp., a Parasitic Dinoflagellate Lethal
to Its Tintinnine Host Eutintinnus pectinis 1, J. Protozool., 35, 607–617,
1988.
Crouch, E. M., Heilmann-Clausen, C., Brinkhuis, H., Morgans, H. E. G.,
Rogers, K. M., Egger, H., and Schmitz, B.: Global dinoflagellate event
associated with the late Paleocene thermal maximum, Geology, 29, 315–318,
https://doi.org/10.1130/0091-7613(2001)029<0315:GDEAWT>2.0.CO;2, 2001.
Daims, H., Brühl, A., Amann, R., Schleifer, K. H., and Wagner, M.: The
domain-specific probe EUB338 is insufficient for the detection of all
bacteria: Development and evaluation of a more comprehensive probe set,
Syst. Appl. Microbiol., 22, 434–444,
https://doi.org/10.1016/S0723-2020(99)80053-8, 1999.
Decelle, J., Romac, S., Stern, R. F., Bendif, E. M., Zingone, A., Audic, S.,
Guiry, M. D., Guillou, L., Tessier, D., Le Gall, F., Gourvil, P., Dos
Santos, A. L., Probert, I., Vaulot, D., de Vargas, C., and Christen, R.:
PhytoREF: A reference database of the plastidial 16S rRNA gene of
photosynthetic eukaryotes with curated taxonomy, Mol. Ecol. Resour., 15,
1435–1445, https://doi.org/10.1111/1755-0998.12401, 2015.
De La Iglesia, R., Echenique-Subiabre, I., Rodríguez-Marconi, S.,
Espinoza, J. P., Von Dassow, P., Ulloa, O., and Trefault, N.: Distinct
oxygen environments shape picoeukaryote assemblages thriving oxygen minimum
zone waters off central Chile, J. Plankton Res., 42, 514–529,
https://doi.org/10.1093/plankt/fbaa036, 2020.
Didion, J. P., Martin, M., and Collins, F. S.: Atropos: Specific, sensitive,
and speedy trimming of sequencing reads, PeerJ, 2017, 1–19,
https://doi.org/10.7717/peerj.3720, 2017.
Djurhuus, A., Pitz, K., Sawaya, N. A., Rojas-Márquez, J., Michaud, B.,
Montes, E., Muller-Karger, F., and Breitbart, M.: Evaluation of marine
zooplankton community structure through environmental DNA metabarcoding,
Limnol. Oceanogr. Method., 16, 209–221, https://doi.org/10.1002/lom3.10237,
2018.
Du, X., Peterson, W., McCulloch, A., and Liu, G.: An unusual bloom of the
dinoflagellate Akashiwo sanguinea off the central Oregon, USA, coast in
autumn 2009, Harmful Algae, 10, 784–793,
https://doi.org/10.1016/j.hal.2011.06.011, 2011.
Duffy, D. C.: The foraging ecology of Peruvian seabirds, Auk, 100, 800–810,
1983.
Dugdale, R. C., Goering, J. J., Barber, R. T., Smith, R. L., and Packard, T.
T.: Denitrification and hydrogen sulfide in the Peru upwelling region during
1976, Deep-Sea Res., 24, 601–608, 1977.
Dupont, C. L., Rusch, D. B., Yooseph, S., Lombardo, M. J., Alexander
Richter, R., Valas, R., Novotny, M., Yee-Greenbaum, J., Selengut, J. D.,
Haft, D. H., Halpern, A. L., Lasken, R. S., Nealson, K., Friedman, R., and
Craig Venter, J.: Genomic insights to SAR86, an abundant and uncultivated
marine bacterial lineage, ISME J., 6, 1186–1199,
https://doi.org/10.1038/ismej.2011.189, 2012.
Echevin, V., Puillat, I., Grados, C., and Dewitte, B.: Seasonal and
mesoscale variability in the Peru Upwelling System from in situ data during
the years 2000 to 2004, Gayana (Concepción), 68, 167–173,
https://doi.org/10.4067/s0717-65382004000200031, 2004.
Edvarsen, B. and Paasche, E.: Bloom dynamics and physiology of Prymnesium
and Chrysochromulina, Physiol. Ecol. Harmful Algal Bloom., 41, 193–208,
1998.
Espinoza, P. and Bertrand, A.: Revisiting Peruvian anchovy (Engraulis
ringens) trophodynamics provides a new vision of the Humboldt Current
system, Prog. Oceanogr., 79, 215–227,
https://doi.org/10.1016/j.pocean.2008.10.022, 2008.
Evans, N. T., Olds, B. P., Renshaw, M. A., Turner, C. R., Li, Y., Jerde, C.
L., Mahon, A. R., Pfrender, M. E., Lamberti, G. A., and Lodge, D. M.:
Quantification of mesocosm fish and amphibian species diversity via
environmental DNA metabarcoding, Mol. Ecol. Resour., 16, 29–41,
https://doi.org/10.1111/1755-0998.12433, 2016.
Ferrari, B. C., Binnerup, S. J., and Gillings, M.: Microcolony cultivation
on a soil substrate membrane system selects for previously uncultured soil
bacteria, Appl. Environ. Microbiol., 71, 8714–8720,
https://doi.org/10.1128/AEM.71.12.8714-8720.2005, 2005.
Folmer, O., Hoeh, W. R., Black, M. B., and Vrijenhoek, R. C.: Conserved
primers for PCR amplification of mitochondrial DNA from different
invertebrate phyla, Mol. Mar. Biol. Biotechnol., 3, 294–299, 1994.
Garreaud, R. D.: A plausible atmospheric trigger for the 2017 coastal El
Niño, Int. J. Climatol., 38, e1296–e1302,
https://doi.org/10.1002/joc.5426, 2018.
Giovannoni, S. J., Britschgi, T. B., Moyer, C. L., and Field, K. G.: Genetic
diversity in Sargasso Sea bacterioplankton, Nature, 345, 60–63,
https://doi.org/10.1038/345060a0, 1990.
Gold, Z., Curd, E., Goodwin, K., Choi, E., Frable, B., Thompson, A., Burton,
R., Kacev, D., and Barber, P.: Improving metabarcoding taxonomic assignment: A case study of fishes in a large marine ecosystem, Mol. Ecol. Resour., 21, 2546–2564,
https://doi.org/10.22541/au.161407483.33882798/v1, 2021.
Gómez, F.: On the consortium of the tintinnid Eutintinnus and the diatom
Chaetoceros in the Pacific Ocean, Mar. Biol., 151, 1899–1906,
https://doi.org/10.1007/s00227-007-0625-0, 2007.
Gómez, F.: Symbiotic interactions between ciliates (Ciliophora) and
diatoms (Bacillariophyceae), Rev. Biol. Trop., 68, 2020.
Graco, M. I., Purca, S., Dewitte, B., Castro, C. G., Morón, O., Ledesma,
J., Flores, G., and Gutiérrez, D.: The OMZ and nutrient features as a
signature of interannual and low-frequency variability in the Peruvian
upwelling system, Biogeosciences, 14, 4601–4617,
https://doi.org/10.5194/bg-14-4601-2017, 2017.
Gruber, N.: Warming up, turning sour, losing breath: Ocean biogeochemistry
under global change, Philos. T. R. Soc. A, 369,
1980–1996, https://doi.org/10.1098/rsta.2011.0003, 2011.
Guillou, L., Viprey, M., Chambouvet, A., Welsh, R. M., Kirkham, A. R.,
Massana, R., Scanlan, D. J., and Worden, A. Z.: Widespread occurrence and
genetic diversity of marine parasitoids belonging to Syndiniales
(Alveolata), Environ. Microbiol., 10, 3349–3365,
https://doi.org/10.1111/j.1462-2920.2008.01731.x, 2008.
Hare, J. A., Walsh, H. J., and Wuenschel, M. J.: Sinking rates of late-stage
fish larvae: Implications for larval ingress into estuarine nursery
habitats, J. Exp. Mar. Bio. Ecol., 330, 493–504,
https://doi.org/10.1016/j.jembe.2005.09.011, 2006.
Harvey, J. B. J., Johnson, S. B., Fisher, J. L., Peterson, W. T., and
Vrijenhoek, R. C.: Comparison of morphological and next generation DNA
sequencing methods for assessing zooplankton assemblages, J. Exp. Mar. Biol.
Ecol., 487, 113–126, https://doi.org/10.1016/j.jembe.2016.12.002, 2017.
Hattenrath-Lehmann, T. K. and Gobler, C. J.: Identification of unique
microbiomes associated with harmful algal blooms caused by Alexandrium
fundyense and Dinophysis acuminata, Harmful Algae, 68, 17–30,
https://doi.org/10.1016/j.hal.2017.07.003, 2017.
He, X., McLean, J. S., Edlund, A., Yooseph, S., Hall, A. P., Liu, S. Y.,
Dorrestein, P. C., Esquenazi, E., Hunter, R. C., Cheng, G., Nelson, K. E.,
Lux, R., and Shi, W.: Cultivation of a human-associated TM7 phylotype
reveals a reduced genome and epibiotic parasitic lifestyle, P. Natl.
Acad. Sci. USA, 112, 244–249, https://doi.org/10.1073/pnas.1419038112,
2015.
Herring, S. C., Christidis, N., Hoell, A., Hoerling, M. P., and Stott, P.
A.: Explaining Extreme Events of 2017 from a Climate Perspective, Bull. Am.
Meteorol. Soc., 100, S1–S117,
https://doi.org/10.1175/bams-explainingextremeevents2017.1, 2019.
Hird, S. M., Sánchez, C., Carstens, B. C., and Brumfield, R. T.:
Comparative gut microbiota of 59 neotropical bird species, Front.
Microbiol., 6, 1403, https://doi.org/10.3389/fmicb.2015.01403, 2015.
Hitchcock, J. N., Mitrovic, S. M., Hadwen, W. L., Roelke, D. L., Growns, I.
O., and Rohlfs, A. M.: Terrestrial dissolved organic carbon subsidizes
estuarine zooplankton: An in situ mesocosm study, Limnol. Oceanogr., 61,
254–267, https://doi.org/10.1002/lno.10207, 2016.
Hugenholtz, P., Tyson, G. W., Webb, R. I., Wagner, A. M., and Blackall, L.
L.: Investigation of candidate division TM7, a recently recognized major
lineage of the domain Bacteria, with no known pure-culture representatives,
Appl. Environ. Microbiol., 67, 411–419,
https://doi.org/10.1128/AEM.67.1.411-419.2001, 2001.
Huson, D. H., Beier, S., Flade, I., Górska, A., El-Hadidi, M., Mitra,
S., Ruscheweyh, H. J., and Tappu, R.: MEGAN Community Edition – Interactive
Exploration and Analysis of Large-Scale Microbiome Sequencing Data, PLoS
Comput. Biol., 12, 1–12, https://doi.org/10.1371/journal.pcbi.1004957,
2016.
Huyer, A., Knoll, M., Paluszkiewicz, T., and Smith, R. L.: The Peru
Undercurrent: a study in variability, Deep-Sea Res. Pt. A, 38, S247–S271, https://doi.org/10.1016/s0198-0149(12)80012-4, 1991.
Ianora, A.: Copepod life history traits in subtemperate regions, J. Mar.
Syst., 15, 337–349, https://doi.org/10.1016/S0924-7963(97)00085-7, 1998.
Pachauri, R. K., Allen, M. R., Barros, V. R., Broome, J., Cramer, W., Christ, R., Church, J. A., Clarke, L., Dahe, Q., Dasgupta, P., and Dubash, N. K.: Climate change 2014: synthesis report. Contribution of Working Groups I, II and III to the fifth assessment report of the Intergovernmental Panel on Climate Change, p. 151, IPCC, 2014.
Jaffe, A. L., Thomas, A. D., He, C., Keren, R., Valentin-Alvarado, L. E.,
Munk, P., Bouma-Gregson, K., Farag, I. F., Amano, Y., Sachdeva, R., West, P.
T., and Banfield, J. F.: Patterns of gene content and co-occurrence constrain the evolutionary path toward animal association in Candidate Phyla Radiation Bacteria, MBio, 12, e00521-21, https://doi.org/10.1128/mBio.00521-21, 2021.
Kahru, M., Michell, B. G., Diaz, A., and Miura, M.: MODIS detects a
devastating algal bloom in Paracas Bay, Peru, Eos, Trans. Am. Geophys.
Union, 85, 465–472, 2004.
Kelly, R. P., Port, J. A., Yamahara, K. M., and Crowder, L. B.: Using
environmental DNA to census marine fishes in a large mesocosm, PLoS One, 9, e86175,
https://doi.org/10.1371/journal.pone.0086175, 2014.
Kim, S. and Park, M. G.: Paulinella longichromatophora sp. nov., a New
Marine Photosynthetic Testate Amoeba Containing a Chromatophore, Protist,
167, 1–12, https://doi.org/10.1016/j.protis.2015.11.003, 2016.
Kolody, B. C., McCrow, J. P., Allen, L. Z., Aylward, F. O., Fontanez, K. M.,
Moustafa, A., Moniruzzaman, M., Chavez, F. P., Scholin, C. A., Allen, E. E.,
Worden, A. Z., Delong, E. F., and Allen, A. E.: Diel transcriptional
response of a California Current plankton microbiome to light, low iron, and
enduring viral infection, ISME J., 13, 2817–2833,
https://doi.org/10.1038/s41396-019-0472-2, 2019.
Koumandou, V. L., Nisbet, R. E. R., Barbrook, A. C., and Howe, C. J.:
Dinoflagellate chloroplasts – Where have all the genes gone?, Trends Genet.,
20, 261–267, https://doi.org/10.1016/j.tig.2004.03.008, 2004.
Kudela, R. M., Lane, J. Q., and Cochlan, W. P.: The potential role of
anthropogenically derived nitrogen in the growth of harmful algae in
California, USA, Harmful Algae, 8, 103–110,
https://doi.org/10.1016/j.hal.2008.08.019, 2008.
Kudela, R. M., Seeyave, S., and Cochlan, W. P.: The role of nutrients in
regulation and promotion of harmful algal blooms in upwelling systems, Prog.
Oceanogr., 85, 122–135, https://doi.org/10.1016/j.pocean.2010.02.008, 2010.
Kuehbacher, T., Rehman, A., Lepage, P., Hellmig, S., Fölsch, U. R.,
Schreiber, S., and Ott, S. J.: Intestinal TM7 bacterial phylogenies in
active inflammatory bowel disease, J. Med. Microbiol., 57, 1569–1576,
https://doi.org/10.1099/jmm.0.47719-0, 2008.
Lamb, J. S., Satgé, Y. G., and Jodice, P. G. R.: Diet composition and
provisioning rates of nestlings determine reproductive success in a
subtropical seabird, Mar. Ecol. Prog. Ser., 581, 149–164,
https://doi.org/10.3354/meps12301, 2017.
Lemos, L. N., Medeiros, J. D., Dini-Andreote, F., Fernandes, G. R., Varani,
A. M., Oliveira, G., and Pylro, V. S.: Genomic signatures and co-occurrence
patterns of the ultra-small Saccharimonadia (phylum CPR/Patescibacteria)
suggest a symbiotic lifestyle, Mol. Ecol., 28, 4259–4271,
https://doi.org/10.1111/mec.15208, 2019.
Leray, M., Yang, J. Y., Meyer, C. P., Mills, S. C., Agudelo, N., Ranwez, V.,
Boehm, J. T., and Machida, R. J.: A new versatile primer set targeting a
short fragment of the mitochondrial COI region for metabarcoding metazoan
diversity: Application for characterizing coral reef fish gut contents,
Front. Zool., 10, 1–14, https://doi.org/10.1186/1742-9994-10-34, 2013.
Limardo, A. J., Sudek, S., Choi, C. J., Poirier, C., Rii, Y. M., Blum, M.,
Roth, R., Goodenough, U., Church, M. J., and Worden, A. Z.: Quantitative
biogeography of picoprasinophytes establishes ecotype distributions and
significant contributions to marine phytoplankton, Environ. Microbiol., 19,
3219–3234, https://doi.org/10.1111/1462-2920.13812, 2017.
Lin, S., Zhang, H., Hou, Y., Zhuang, Y., and Miranda, L.: High-level
diversity of dinoflagellates in the natural environment, revealed by
assessment of mitochondrial cox1 and cob genes for dinoflagellate DNA
barcoding, Appl. Environ. Microbiol., 75, 1279–1290,
https://doi.org/10.1128/AEM.01578-08, 2009.
Marcy, Y., Ouverney, C., Bik, E. M., Lösekann, T., Ivanova, N., Martin,
H. G., Szeto, E., Platt, D., Hugenholtz, P., Relman, D. A., and Quake, S.
R.: Dissecting biological “dark matter” with single-cell genetic analysis
of rare and uncultivated TM7 microbes from the human mouth, P. Natl.
Acad. Sci. USA, 104, 11889–11894,
https://doi.org/10.1073/pnas.0704662104, 2007.
Margalef, R.: Life-forms of phytoplankton as survival alternatives in an
unstable environment, Ocean. Acta, 1, 493–509, 1978.
Martin, J. L., Santi, I., Pitta, P., John, U., and Gypens, N.: Towards
quantitative metabarcoding of eukaryotic plankton: an approach to improve
18S rRNA gene copy number bias, Metabarcod. Metagenom., 6, 245–259,
https://doi.org/10.3897/mbmg.6.85794, 2022.
Martin, M.: Cutadapt removes adapter sequences from high-throughput
sequencing reads, EMBnet J., 17, 10–12,
https://doi.org/10.14806/ej.17.1.200, 2011.
Martino, C., Morton, J. T., Marotz, C. A., Thompson, L. R., Tripathi, A.,
Knight, R., and Zengler, K.: A Novel Sparse Compositional Technique Reveals
Microbial Perturbations, MSystems, 4, e00016-19,
https://doi.org/10.1128/msystems.00016-19, 2019.
Matsuyama, Y., Miyamoto, M., and Kotani, Y.: Grazing impacts of the
heterotrophic dinoflagellate Polykrikos kofoidii on a bloom of Gymnodinium
catenatum, Aquat. Microb. Ecol., 17, 91–98,
https://doi.org/10.3354/ame017091, 1999.
Messié, M. and Chavez, F. P.: Seasonal regulation of primary production
in eastern boundary upwelling systems, Prog. Oceanogr., 134, 1–18,
https://doi.org/10.1016/j.pocean.2014.10.011, 2015.
Min, M. and Pitz, K.: MBARI-BOG/KOSMOS_eDNA_paper: Initial submission to Biogeosciences (v1.0), Zenodo [code and data set],
https://doi.org/10.5281/zenodo.7255826, 2022.
Miya, M., Sato, Y., Fukunaga, T., Sado, T., Poulsen, J.Y., Sato, K., Minamoto, T., Yamamoto, S., Yamanaka, H., Araki, H., and Kondoh, M.: MiFish, a set of universal PCR primers for metabarcoding environmental DNA from fishes: detection of more than 230 subtropical marine species, Roy. Soc. Open Sci., 2, 150088, https://doi.org/10.1098/rsos.150088, 2015.
Monuki, K., Barber, P. H., and Gold, Z.: eDNA captures depth partitioning in
a kelp forest ecosystem, PLoS One, 16, 1–17,
https://doi.org/10.1371/journal.pone.0253104, 2021.
Morris, A. W. and Riley, J. P.: The determination of nitrate in sea water,
Anal. Chim. Acta, 29, 272–279,
https://doi.org/10.1016/S0003-2670(00)88614-6, 1963.
Morris, R. M., Rappé, M. S., Connon, S. A., Vergin, K. L., Siebold, W.
A., Carlson, C. A., and Giovannoni, S. J.: SAR11 clade dominates ocean
surface bacterioplankton communities, Nature, 420, 806–810,
https://doi.org/10.1038/nature01240, 2002.
Mullin, J. B. and Riley, J. P.: The colorimetric determination of silicate
with special reference to sea and natural waters, Anal. Chim. Acta, 12,
162–176, https://doi.org/10.1016/S0003-2670(00)87825-3, 1955.
Needham, D. M. and Fuhrman, J. A.: Pronounced daily succession of
phytoplankton, archaea and bacteria following a spring bloom, Nat.
Microbiol., 1, 16005, https://doi.org/10.1038/nmicrobiol.2016.5, 2016.
Neufeld, J. D., Schäfer, H., Cox, M. J., Boden, R., McDonald, I. R., and
Murrell, J. C.: Stable-isotope probing implicates Methylophaga spp and novel
Gammaproteobacteria in marine methanol and methylamine metabolism, ISME J.,
1, 480–491, https://doi.org/10.1038/ismej.2007.65, 2007.
O'donnell, J. L., Kelly, R. P., Lowell, N. C., and Port, J. A.: Indexed PCR
primers induce template- Specific bias in Large-Scale DNA sequencing
studies, PLoS One, 11, 1–11, https://doi.org/10.1371/journal.pone.0148698,
2016.
Ohki, K., Yamada, K., Kamiya, M., and Yoshikawa, S.: Morphological,
phylogenetic and physiological studies of pico-cyanobacteria isolated from
the halocline of a saline Meromictic Lake, Lake Suigetsu, Japan, Microbes
Environ., 27, 171–178, https://doi.org/10.1264/jsme2.ME11329, 2012.
Page, F. C.: Marine gymnamoebae, Institute of Terrestrial Ecology, 60 pp., 1983.
Parada, A. E., Needham, D. M., and Fuhrman, J. A.: Every base matters:
Assessing small subunit rRNA primers for marine microbiomes with mock
communities, time series and global field samples, Environ. Microbiol., 18,
1403–1414, https://doi.org/10.1111/1462-2920.13023, 2016.
Park, M. G. and Kim, M.: Prey specificity and feeding of the thecate
mixotrophic dinoflagellate fragilidium duplocampanaeforme, J. Phycol., 46,
424–432, https://doi.org/10.1111/j.1529-8817.2010.00824.x, 2010.
Park, S., Jung, Y. T., Park, J. M., and Yoon, J. H.: Pseudohongiella acticola sp. nov., a novel gammaproteobacterium isolated from seawater, and
emended description of the genus Pseudohongiella, Antonie van Leeuwenhoek,
Int. J. Gen. Mol. Microbiol., 106, 809–815,
https://doi.org/10.1007/s10482-014-0250-0, 2014.
Parks, D. H., Chuvochina, M., Waite, D. W., Rinke, C., Skarshewski, A.,
Chaumeil, P. A., and Hugenholtz, P.: A standardized bacterial taxonomy based
on genome phylogeny substantially revises the tree of life, Nat.
Biotechnol., 36, 996–1004, https://doi.org/10.1038/nbt.4229, 2018.
Partensky, F., Blanchot, J., and Vaulot, D.: Differential distribution and
ecology of Prochlorococcus and Synechococcus in oceanic waters: A review,
Bull. Inst. Ocean., 19, 457–475, 1999.
Patterson, D., Nygaard, K., Steinberg, G., and Turley, C.: Heterotrophic
flagellates and other protists associated with oceanic detritus throughout
the water column in the mid north atlantic, J. Mar. Biol. Assoc. United
Kingdom, 73, 67–95, https://doi.org/10.1017/S0025315400032653, 1993.
Patti, B., Guisande, C., Vergara, A. R., Riveiro, I., Maneiro, I., Barreiro,
A., Bonanno, A., Buscaino, G., Cuttitta, A., Basilone, G., and Mazzola, S.:
Factors responsible for the differences in satellite-based chlorophyll a
concentration between the major global upwelling areas, Estuar. Coast. Shelf
Sci., 76, 775–786, https://doi.org/10.1016/j.ecss.2007.08.005, 2008.
Pennington, J. T., Mahoney, K. L., Kuwahara, V. S., Kolber, D. D., Calienes,
R., and Chavez, F. P.: Primary production in the eastern tropical Pacific: A
review, Prog. Oceanogr., 69, 285–317,
https://doi.org/10.1016/j.pocean.2006.03.012, 2006.
Penven, P., Echevin, V., Pasapera, J., Colas, F., and Tam, J.: Average
circulation, seasonal cycle, and mesoscale dynamics of the Peru Current
System: A modeling approach, J. Geophys. Res. C, 110, 1–21,
https://doi.org/10.1029/2005JC002945, 2005.
Pitz, K., Truelove, N., Nye, C., Michisaki, R. P., and Chavez, F.: Environmental DNA (eDNA) 12S Metabarcoding Illumina MiSeq NGS PCR Protocol (Touchdown), protocols.io,
https://doi.org/10.17504/protocols.io.bcppivmn, 2020.
Quast, C., Pruesse, E., Yilmaz, P., Gerken, J., Schweer, T., Yarza, P.,
Peplies, J., and Glöckner, F. O.: The SILVA ribosomal RNA gene database
project: Improved data processing and web-based tools, Nucl. Acids Res.,
41, 590–596, https://doi.org/10.1093/nar/gks1219, 2013.
R Core Team: R: A Language and Environment for Statistical Computing,
Vienna, Austria, http://www.R-project.org (last access: 21 February 2023), 2019.
Riebesell, U., Bellerby, R. G. J., Grossart, H. P., and Thingstad, F.:
Mesocosm CO2 perturbation studies: From organism to community level,
Biogeosciences, 5, 1157–1164, https://doi.org/10.5194/bg-5-1157-2008, 2008.
Riebesell, U., Czerny, J., Von Bröckel, K., Boxhammer, T.,
Büdenbender, J., Deckelnick, M., Fischer, M., Hoffmann, D., Krug, S. A.,
Lentz, U., Ludwig, A., Muche, R., and Schulz, K. G.: Technical Note: A
mobile sea-going mesocosm system – New opportunities for ocean change
research, Biogeosciences, 10, 1835–1847,
https://doi.org/10.5194/bg-10-1835-2013, 2013.
Riemann, L., Steward, G. F., and Azam, F.: Erratum: Dynamics of bacterial
community composition and activity during a mesocosm diatom bloom, Appl. Environ.
Microbiol., 66, 2282, https://doi.org/10.1128/AEM.66.5.2282-2282.2000, 2000.
Rimet, F., Chaumeil, P., Keck, F., Kermarrec, L., Vasselon, V., Kahlert, M.,
Franc, A., and Bouchez, A.: R-Syst::diatom: An open-access and curated
barcode database for diatoms and freshwater monitoring, Database,
1–21, https://doi.org/10.1093/database/baw016, 2016.
Robertson, D. A.: Possible functions of surface structure and size in some
planktonic eggs of marine fishes, New Zeal. J. Mar. Freshw. Res., 15,
147–153, 1981.
Sandaa, R. A., Gómez-Consarnau, L., Pinhassi, J., Riemann, L., Malits,
A., Weinbauer, M. G., Gasol, J. M., and Thingstad, T. F.: Viral control of
bacterial biodiversity – Evidence from a nutrient-enriched marine mesocosm
experiment, Environ. Microbiol., 11, 2585–2597,
https://doi.org/10.1111/j.1462-2920.2009.01983.x, 2009.
Sassoubre, L. M., Yamahara, K. M., Gardner, L. D., Block, B. A., and Boehm,
A. B.: Quantification of Environmental DNA (eDNA) Shedding and Decay Rates
for Three Marine Fish, Environ. Sci. Technol., 50, 10456–10464,
https://doi.org/10.1021/acs.est.6b03114, 2016.
Schnell, I. B., Bohmann, K., and Gilbert, M. T. P.: Tag jumps illuminated –
reducing sequence-to-sample misidentifications in metabarcoding studies,
Mol. Ecol. Resour., 15, 1289–1303, https://doi.org/10.1111/1755-0998.12402,
2015.
Schoenle, A., Hohlfeld, M., Rosse, M., Filz, P., Wylezich, C., Nitsche, F.,
and Arndt, H.: Global comparison of bicosoecid Cafeteria-like flagellates
from the deep ocean and surface waters, with reorganization of the family
Cafeteriaceae, Eur. J. Protistol., 73, 125665,
https://doi.org/10.1016/j.ejop.2019.125665, 2020.
Silva, A. and Oliva, M.: Revisión sobre aspectos biológicos y de
cultivo del lenguado chileno (Paralichthys adspersus), Lat. Am. J. Aquat.
Res., 38, 377–386, 2010.
Simmons, M. P., Sudek, S., Monier, A., Limardo, A. J., Jimenez, V., Perle,
C. R., Elrod, V. A., Pennington, J. T., and Worden, A. Z.: Abundance and
biogeography of picoprasinophyte ecotypes and other phytoplankton in the
eastern North Pacific Ocean, Appl. Environ. Microbiol., 82, 1693–1705,
https://doi.org/10.1128/AEM.02730-15, 2016.
Skjoldal, H. R., Wiebe, P. H., Postel, L., Knutsen, T., Kaartvedt, S., and
Sameoto, D. D.: Intercomparison of zooplankton (net) sampling systems:
Results from the ICES/GLOBEC sea-going workshop, Prog. Oceanogr., 108,
1–42, https://doi.org/10.1016/j.pocean.2012.10.006, 2013.
Smayda, T. J.: Adaptations and selection of harmful and other dinoflagellate
species in upwelling systems. 2. Motility and migratory behaviour, Prog.
Oceanogr., 85, 71–91, https://doi.org/10.1016/j.pocean.2010.02.005, 2010.
Smayda, T. J. and Trainer, V. L.: Dinoflagellate blooms in upwelling
systems: Seeding, variability, and contrasts with diatom bloom behaviour,
Prog. Oceanogr., 85, 92–107, https://doi.org/10.1016/j.pocean.2010.02.006,
2010.
Spear-bernstein, L. and Miller, K. R.: Unique Location of the
Phycobiliprotein Light-Harvesting Pigment in the Cryptophyceae, J. Phycol.,
25, 412–419, https://doi.org/10.1111/j.1529-8817.1989.tb00245.x, 1989.
Spilling, K., Olli, K., Lehtoranta, J., Kremp, A., Tedesco, L., Tamelander,
T., Klais, R., Peltonen, H., and Tamminen, T.: Shifting
diatom – dinoflagellate dominance during spring bloom in the Baltic Sea and
its potential effects on biogeochemical cycling, Front. Mar. Sci., 5, 327,
2018.
Stewart, R. I. A., Dossena, M., Bohan, D. A., Jeppesen, E., Kordas, R. L.,
Ledger, M. E., Meerhoff, M., Moss, B., Mulder, C., Shurin, J. B., Suttle,
B., Thompson, R., Trimmer, M., and Woodward, G.: Mesocosm Experiments as a
Tool for Ecological Climate-Change Research, 1st Edn., Elsevier Ltd., 71–181, https://doi.org/10.1016/B978-0-12-417199-2.00002-1, 2013.
Stoeck, T., Bass, D., Nebel, M., Christen, R., Jones, M. D. M., Breiner, H.
W., and Richards, T. A.: Multiple marker parallel tag environmental DNA
sequencing reveals a highly complex eukaryotic community in marine anoxic
water, Mol. Ecol., 19, 21–31,
https://doi.org/10.1111/j.1365-294X.2009.04480.x, 2010.
Sudek, S., Everroad, R. C., Gehman, A. L. M., Smith, J. M., Poirier, C. L.,
Chavez, F. P., and Worden, A. Z.: Cyanobacterial distributions along a
physico-chemical gradient in the Northeastern Pacific Ocean, Environ.
Microbiol., 17, 3692–3707, https://doi.org/10.1111/1462-2920.12742, 2015.
Suffrian, K., Simonelli, P., Nejstgaard, J. C., Putzeys, S., Carotenuto, Y.,
and Antia, A. N.: Microzooplankton grazing and phytoplankton growth in
marine mesocosms with increased CO2 levels, Biogeosciences, 5, 1145–1156,
https://doi.org/10.5194/bg-5-1145-2008, 2008.
Taberlet, P., Coissac, E., Hajibabaei, M., and Rieseberg, L.: Environmental
DNA, Mol. Ecol., 21, 1789–1793, 2012.
Taucher, J., Bach, L. T., Boxhammer, T., Nauendorf, A., Achterberg, E. P.,
Algueró-Muñiz, M., Arístegui, J., Czerny, J., Esposito, M.,
Guan, W., Haunost, M., Horn, H. G., Ludwig, A., Meyer, J., Spisla, C.,
Sswat, M., Stange, P., Riebesell, U., Aberle-Malzahn, N., Archer, S.,
Boersma, M., Broda, N., Büdenbender, J., Clemmesen, C., Deckelnick, M.,
Dittmar, T., Dolores-Gelado, M., Dörner, I., Fernández-Urruzola, I.,
Fiedler, M., Fischer, M., Fritsche, P., Gomez, M., Grossart, H. P., Hattich,
G., Hernández-Brito, J., Hernández-Hernández, N.,
Hernández-León, S., Hornick, T., Kolzenburg, R., Krebs, L.,
Kreuzburg, M., Lange, J. A. F., Lischka, S., Linsenbarth, S., Löscher,
C., Martínez, I., Montoto, T., Nachtigall, K., Osma-Prado, N., Packard,
T., Pansch, C., Posman, K., Ramírez-Bordón, B., Romero-Kutzner, V.,
Rummel, C., Salta, M., Martínez-Sánchez, I., Schröder, H.,
Sett, S., Singh, A., Suffrian, K., Tames-Espinosa, M., Voss, M., Walter, E.,
Wannicke, N., Xu, J., and Zark, M.: Influence of ocean acidification and
deep water upwelling on oligotrophic plankton communities in the subtropical
North Atlantic: Insights from an in situ mesocosm study, Front. Mar. Sci.,
4, 85, https://doi.org/10.3389/fmars.2017.00085, 2017.
Tillmann, U.: Interactions between planktonic microalgae and protozoan
grazers, J. Eukaryot. Microbiol., 51, 156–168,
https://doi.org/10.1111/j.1550-7408.2004.tb00540.x, 2004.
Trainer, V. L., Pitcher, G. C., Reguera, B., and Smayda, T. J.: The
distribution and impacts of harmful algal bloom species in eastern boundary
upwelling systems, Prog. Oceanogr., 85, 33–52,
https://doi.org/10.1016/j.pocean.2010.02.003, 2010.
Tyrrell, T. and Merico, A.: Emiliania huxleyi: bloom observations and the
conditions that induce them, in: Coccolithophores, Springer Berlin,
Heidelberg, 75–97, https://doi.org/10.1007/978-3-662-06278-4_4, 2004.
Ushio, M., Murata, K., Sado, T., Nishiumi, I., Takeshita, M., Iwasaki, W.,
and Miya, M.: Demonstration of the potential of environmental DNA as a tool
for the detection of avian species, Sci. Rep., 8, 1–10,
https://doi.org/10.1038/s41598-018-22817-5, 2018.
Valentini, A., Taberlet, P., Miaud, C., Civade, R., Herder, J., Thomsen, P.
F., Bellemain, E., Besnard, A., Coissac, E., Boyer, F., Gaboriaud, C., Jean,
P., Poulet, N., Roset, N., Copp, G. H., Geniez, P., Pont, D., Argillier, C.,
Baudoin, J. M., Peroux, T., Crivelli, A. J., Olivier, A., Acqueberge, M., Le
Brun, M., Møller, P. R., Willerslev, E., and Dejean, T.: Next-generation
monitoring of aquatic biodiversity using environmental DNA metabarcoding,
Mol. Ecol., 25, 929–942, https://doi.org/10.1111/mec.13428, 2016.
Vincent, F. J., Colin, S., Romac, S., Scalco, E., Bittner, L., Garcia, Y.,
Lopes, R. M., Dolan, J. R., Zingone, A., and De Vargas, C.: The epibiotic
life of the cosmopolitan diatom Fragilariopsis doliolus on heterotrophic
ciliates in the open ocean, ISME J., 12, 1094–1108, 2018.
Walz, K., Yamahara, K., Michisaki, R. P., and Chavez, F. P.: MBARI Environmental DNA (eDNA) extraction using Qiagen DNeasy Blood and Tissue Kit, protocols.io,
https://doi.org/10.17504/protocols.io.xjufknw, 2019.
Wear, E. K., Wilbanks, E. G., Nelson, C. E., and Carlson, C. A.: Primer
selection impacts specific population abundances but not community dynamics
in a monthly time-series 16S rRNA gene amplicon analysis of coastal marine
bacterioplankton, Environ. Microbiol., 20, 2709–2726,
https://doi.org/10.1111/1462-2920.14091, 2018.
Wiebe, P. H. and Holland, W. R.: Plankton Patchiness: Effects on Repeated
Net Tows, Limnol. Oceanogr., 13, 315–321,
https://doi.org/10.4319/lo.1968.13.2.0315, 1968.
Worden, A. Z., Nolan, J. K., and Palenik, B.: Assessing the dynamics and
ecology of marine picophytoplankton: The importance of the eukaryotic
component, Limnol. Oceanogr., 49, 168–179,
https://doi.org/10.4319/lo.2004.49.1.0168, 2004.
Xu, L., Wu, Y. H., Jian, S. L., Wang, C. S., Wu, M., Cheng, L., and Xu, X.
W.: Pseudohongiella nitratireducens sp. Nov., isolated from seawater, and
emended description of the genus Pseudohongiella, Int. J. Syst. Evol.
Microbiol., 66, 5155–5160, https://doi.org/10.1099/ijsem.0.001489, 2016.
Yang, C., Li, Y., Zhou, Y., Zheng, W., Tian, Y., and Zheng, T.: Bacterial
community dynamics during a bloom caused by Akashiwo sanguinea in the Xiamen
sea area, China, Harmful Algae, 20, 132–141,
https://doi.org/10.1016/j.hal.2012.09.002, 2012.
Yang, C., Li, Y., Zhou, B., Zhou, Y., Zheng, W., Tian, Y., Van Nostrand, J.
D., Wu, L., He, Z., Zhou, J., and Zheng, T.: Illumina sequencing-based
analysis of free-living bacterial community dynamics during an Akashiwo
sanguine bloom in Xiamen sea, China, Sci. Rep., 5, 1–11,
https://doi.org/10.1038/srep08476, 2015.
Zubkov, M. V.: Faster growth of the major prokaryotic versus eukaryotic CO2
fixers in the oligotrophic ocean, Nat. Commun., 5, 1–6,
https://doi.org/10.1038/ncomms4776, 2014.
Short summary
Emerging molecular methods provide new ways of understanding how marine communities respond to changes in ocean conditions. Here, environmental DNA was used to track the temporal evolution of biological communities in the Peruvian coastal upwelling system and in an adjacent enclosure where upwelling was simulated. We found that the two communities quickly diverged, with the open ocean being one found during upwelling and the enclosure evolving to one found under stratified conditions.
Emerging molecular methods provide new ways of understanding how marine communities respond to...
Altmetrics
Final-revised paper
Preprint