Articles | Volume 15, issue 14
https://doi.org/10.5194/bg-15-4353-2018
© Author(s) 2018. 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-15-4353-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
18 Jul 2018
Research article |
| 18 Jul 2018
| 18 Jul 2018
The Arctic picoeukaryote Micromonas pusilla benefits synergistically from warming and ocean acidification
Clara Jule Marie Hoppe
CORRESPONDING AUTHOR
Marine Biogeosciences, Alfred Wegener Institute – Helmholtz Centre
for Polar and Marine Research, 27570 Bremerhaven, Germany
Norwegian Polar Institute, 9296 Tromsø, Norway
Clara M. Flintrop
Marine Biogeosciences, Alfred Wegener Institute – Helmholtz Centre
for Polar and Marine Research, 27570 Bremerhaven, Germany
MARUM, 28359 Bremen, Germany
Björn Rost
Marine Biogeosciences, Alfred Wegener Institute – Helmholtz Centre
for Polar and Marine Research, 27570 Bremerhaven, Germany
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The Arctic picoeukaryote Micromonas pusilla was acclimated to two pCO2 levels under a constant and a dynamic light, simulating more realistic light fields. M. pusilla was able to benefit from ocean acidification with an increase in growth rate, irrespective of the light regime. In dynamic light M. pusilla optimised its photophysiology for effective light usage during both low- and high-light periods. This highlights M. pusilla is likely to cope well with future conditions in the Arctic Ocean.
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Svalbard is a relevant area to evaluate changes in local environmental processes induced by Arctic Amplification (AA). By comparing the snow chemical composition of the 2019–20 season with 2018–19 and 2020–21, we provide an overview of the potential impacts of AA on the Svalbard snowpack, and associated changes in aerosol production process, influenced by a complex interplay between atmospheric patterns, local and oceanic conditions that jointly drive snowpack impurity amounts and composition.
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The Arctic picoeukaryote Micromonas pusilla was acclimated to two pCO2 levels under a constant and a dynamic light, simulating more realistic light fields. M. pusilla was able to benefit from ocean acidification with an increase in growth rate, irrespective of the light regime. In dynamic light M. pusilla optimised its photophysiology for effective light usage during both low- and high-light periods. This highlights M. pusilla is likely to cope well with future conditions in the Arctic Ocean.
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Biogeosciences, 21, 2995–3006, https://doi.org/10.5194/bg-21-2995-2024, https://doi.org/10.5194/bg-21-2995-2024, 2024
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Biogeosciences, 21, 1887–1902, https://doi.org/10.5194/bg-21-1887-2024, https://doi.org/10.5194/bg-21-1887-2024, 2024
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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
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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
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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
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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.
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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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.
Markus A. Min, David M. Needham, Sebastian Sudek, Nathan Kobun Truelove, Kathleen J. Pitz, Gabriela M. Chavez, Camille Poirier, Bente Gardeler, Elisabeth von der Esch, Andrea Ludwig, Ulf Riebesell, Alexandra Z. Worden, and Francisco P. Chavez
Biogeosciences, 20, 1277–1298, https://doi.org/10.5194/bg-20-1277-2023, https://doi.org/10.5194/bg-20-1277-2023, 2023
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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.
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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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.
Cited articles
AMAP: AMAP Assessment 2013: Arctic Ocean Acidification, Arctic Monitoring
and Assessment Programme (AMAP), Oslo, Norway, 99, 2013.
Arrigo, K. R., van Dijken, G., and Pabi, S.: Impact of a shrinking Arctic
ice cover on marine primary production, Geophys. Res. Lett., 35,
L19603, https://doi.org/10.1029/2008gl035028, 2008.
Bach, L. T., Mackinder, L. C. M., Schulz, K. G., Wheeler, G., Schroeder, D.
C., Brownlee, C., and Riebesell, U.: Dissecting the impact of CO2 and
pH on the mechanisms of photosynthesis and calcification in the
coccolithophore Emiliania huxleyi, New Phytol., 199, 121–134,
https://doi.org/10.1111/nph.12225, 2013.
Behrenfeld, M. J., Halsey, K. H., and Milligan, A. J.: Evolved physiological
responses of phytoplankton to their integrated growth environment,
Philos. T. R. Soc. B, 363,
2687–2703, https://doi.org/10.1098/rstb.2008.0019, 2008.
Berge, J., Daase, M., Renaud, P. E., Ambrose Jr., W. G., Darnis, G.,
Last, K. S., Leu, E., Cohen, J. H., Johnsen, G., Moline, M. A.,
Cottier, F., Varpe, Ø., Shunatova, N., Bałazy, P., Morata, N.,
Massabuau, J.-C., Falk-Petersen, S., Kosobokova, K., Hoppe, C. J. M.,
Węsławski, J. M., Kukliński, P., Legeżyńska, J.,
Nikishina, D., Cusa, M., Kędra, M., Włodarska-Kowalczuk, M., Vogedes,
D., Camus, L., Tran, D., Michaud, E., Gabrielsen, T. M., Granovitch, A.,
Gonchar, A., Krapp, R., and Callesen, T. A.: Unexpected Levels of
Biological Activity during the Polar Night Offer New Perspectives on a
Warming Arctic, Curr. Biol., 25, 2555–2561, https://doi.org/10.1016/j.cub.2015.08.024, 2015.
Brewer, P. G., Bradshaw, A. L., and Williams, R. T.: Measurement of total
carbon dioxide and alkalinity in the North Atlantic ocean in 1981, in: The
Changing Carbon Cycle – A Global Analysis edited by: Trabalka, J. R. and
Reichle, D. E., Springer Verlag, Heidelberg Berlin, 358–381, 1986.
Brown, J. H., Gillooly, J. F., Allen, A. P., Savage, V. M., and West, G. B.:
Toward a metabolic theorie of ecology, Ecology, 85, 1771–1789,
https://doi.org/10.1890/03-9000, 2004.
Brussaard, C. P. D., Noordeloos, A. A. M., Witte, H., Collenteur, M. C. J., Schulz, K.,
Ludwig, A., and Riebesell, U.: Arctic microbial community dynamics influenced by
elevated CO2 levels, Biogeosciences, 10, 719–731, https://doi.org/10.5194/bg-10-719-2013, 2013.
Collins, M., Knutti, R., Arblaster, J., Dufresne, J.-L., Fichefet, T.,
Friedlingstein, P., Gao, X., Gutowski, W., Johns, T., and Krinner, G.:
Long-term climate change: projections, commitments and irreversibility,
in: Climate Change 2013: The Physical Science Basis, IPCC Working Group I Contribution to AR5, edited by: IPCC, Cambridge University Press, Cambridge,
2013.
Collins, S., Rost, B., and Rynearson, T. A.: Evolutionary potential of
marine phytoplankton under ocean acidification, Evol. Appl.,
7, 140–155, https://doi.org/10.1111/eva.12120, 2014.
Daufresne, M., Lengfellner, K., and Sommer, U.: Global warming benefits the
small in aquatic ecosystems, P. Natl. Acad.
Sci. USA, 106, 12788–12793, https://doi.org/10.1073/pnas.0902080106, 2009.
Dickson, A. G.: Standard potential of the reaction: AgCl(s) + 1/2
H2(g) = Ag(s) + HCl(aq), and the standard acidity constant of the ion
Dickson, A. G. and Millero, F. J.: A comparison of the equilibrium
constants for the dissociation of carbonic acid in seawater media, Deep-Sea
Res., 34, 1733–1743, 1987.
Dickson, A. G., Sabine, C. L., and Christian, J. R.: Guide to best practices
for ocean CO2 measurements, North Pacific Marine Science Organization,
Sidney, British Columbia, 191, 2007.
Engel, A., Schulz, K. G., Riebesell, U., Bellerby, R., Delille, B., and Schartau, M.:
Effects of CO2 on particle size distribution and phytoplankton abundance
during a mesocosm bloom experiment (PeECE II), Biogeosciences, 5, 509–521, https://doi.org/10.5194/bg-5-509-2008, 2008. .
Eppley, R. W.: Temperature and phytoplankton growth in the sea, Fish. B.-NOAA,
70, 1063–1085, 1972.
Flynn, K. J., Blackford, J. C., Baird, M. E., Raven, J. A., Clark, D. R.,
Beardall, J., Brownlee, C., Fabian, H., and Wheeler, G. L.: Changes in pH at
the exterior surface of plankton with ocean acidification, Nat. Clim.
Change, 2, 510–513, 2012.
Genty, B., Briantais, J.-M., and Baker, N. R.: The relationship between the
quantum yield of photosynthetic electron transport and quenching of
chlorophyll fluorescence, BBA-Gen. Subjects, 990, 87–92, https://doi.org/10.1016/s0304-4165(89)80016-9, 1989.
Guillard, R. R. L. and Ryther, J. H.: Studies of marine planktonic diatoms.
I. Cyclothella nana Hustedt and Detonula confervacea Cleve, Can. J.
Microbiol., 8, 229–239, 1962.
Halsey, K., Milligan, A., and Behrenfeld, M.: Contrasting Strategies of
Photosynthetic Energy Utilization Drive Lifestyle Strategies in Ecologically
Important Picoeukaryotes, Metabolites, 4, 260–280, 2014.
Halsey, K. H. and Jones, B. M.: Phytoplankton Strategies for Photosynthetic
Energy Allocation, Annu. Rev. Mar. Sci., 7, 265–297,
https://doi.org/10.1146/annurev-marine-010814-015813, 2015.
Harley, C. D. G., Connell, S. D., Doubleday, Z. A., Kelaher, B., Russell, B.
D., Sarà, G., and Helmuth, B.: Conceptualizing ecosystem tipping points
within a physiological framework, Ecol. Evol., 7, 6035–6045, https://doi.org/10.1002/ece3.3164,
2017.
Hegseth, E. N., Assmy, P., Wiktor, J., Kristiansen, S., Leu, E., Tverberg,
V., Gabrielsen, G. W., Skogseth, R., and Cottier, F. R.: Phytoplankton
seasonal dynamics in Kongsfjorden, Svalbard and the adjacent shelf, in: The
Ecosystem of Kongsfjorden, Svalbard, edited by: Hop, H. and Wiencke, C.,
Springer, Berlin, in press, 2018.
Hoppe, C. J. M., Langer, G., Rokitta, S. D., Wolf-Gladrow, D. A., and Rost, B.: Implications of
observed inconsistencies in carbonate chemistry measurements for ocean
acidification studies, Biogeosciences, 9, 2401–2405, https://doi.org/10.5194/bg-9-2401-2012, 2012.
Hoppe, C. J. M., Holtz, L.-M., Trimborn, S., and Rost, B.: Ocean
acidification decreases the light-use efficiency in an Antarctic diatom
under dynamic but not constant light, New Phytol., 207, 159–171,
https://doi.org/10.1111/nph.13334, 2015.
Hoppe, C. J. M., Flintrop, C., and Rost, B.: Interactive effects of warming and ocean acidification
on the Arctic picoeukaryote Micromonas pusilla, PANGAEA, https://doi.org/10.1594/PANGAEA.892370, DOI registration in progress,
2018a.
Hoppe, C. J. M., Wolf, K. K. E., Schuback, N., Tortell, P. D., and Rost, B.:
Compensation of ocean acidification effects in Arctic phytoplankton
assemblages, Nat. Clim. Change, 8, 529–533, https://doi.org/10.1038/s41558-018-0142-9,
2018b.
Hussherr, R., Levasseur, M., Lizotte, M., Tremblay, J.-É., Mol, J., Thomas, H., Gosselin, M.,
Starr, M., Miller, L. A., Jarniková, T., Schuback, N., and Mucci, A.: Impact of ocean acidification
on Arctic phytoplankton blooms and dimethyl sulfide concentration under simulated
ice-free and under-ice conditions, Biogeosciences, 14, 2407–2427, https://doi.org/10.5194/bg-14-2407-2017, 2017.
Knap, A., Michaels, A., Close, A., Ducklow, H., and Dickson, A.: Protocols
for the Joint Global Ocean Flux Study (JGOFS) Core Measurements, UNESCO,
Paris, France,
170, 1996.
Kolber, Z. S., Prasil, O., and Falkowski, P. G.: Measurements of variable
chlorophyll fluorescence using fast repetition rate techniques. I. Defining
methodology and experimental protocols, Biochem. Biophys. Acta, 1367,
88–106, 1998.
Kranz, S. A., Young, J. N., Hopkinson, B. M., Goldman, J. A. L., Tortell, P.
D., and Morel, F. M. M.: Low temperature reduces the energetic requirement
for the CO2 concentrating mechanism in diatoms, New Phytol., 205,
192–201, https://doi.org/10.1111/nph.12976, 2015.
Levitt, J.: Responses of Plants to Environmental Stress, Volume 1: Chilling,
Freezing, and High Temperature Stresses, Academic Press, Cambridge, USA, 1980.
Li, W. K. W., McLaughlin, F. A., Lovejoy, C., and Carmack, E. C.: Smallest
Algae Thrive As the Arctic Ocean Freshens, Science, 326, 539,
https://doi.org/10.1126/science.1179798, 2009.
Lovejoy, C.: Changing Views of Arctic Protists (Marine Microbial Eukaryotes)
in a Changing Arctic, Acta Protozool., 53, 91–100,
https://doi.org/10.4467/16890027ap.14.009.1446, 2014.
Lovejoy, C., Vincent, W. F., Bonilla, S., Roy, S., Martineau, M.-J.,
Terrado, R., Potvin, M., Massana, R., and Pedrós-Alió, C.:
Distribution, phylogeny, and growth of cold-adapted picoprasinophytes in
Arctic Seas, J. Phycol., 43, 78–89,
https://doi.org/10.1111/j.1529-8817.2006.00310.x, 2007.
Maat, D. S., Crawfurd, K. J., Timmermans, K. R., and Brussaard, C. P. D.:
Elevated CO2 and Phosphate Limitation Favor Micromonas pusilla through
Stimulated Growth and Reduced Viral Impact, Appl. Environ.
Microb., 80, 3119–3127, https://doi.org/10.1128/aem.03639-13, 2014.
Marquardt, M., Vader, A., Stübner, E. I., Reigstad, M., and Gabrielsen,
T. M.: Strong Seasonality of Marine Microbial Eukaryotes in a High-Arctic
Fjord (Isfjorden, in West Spitsbergen, Norway), Appl. Environ.
Microb., 82, 1868–1880, https://doi.org/10.1128/aem.03208-15, 2016.
Maxwell, D. P., Falk, S., Trick, C. G., and Huner, N.: Growth at Low
Temperature Mimics High-Light Acclimation in Chlorella vulgaris, Plant
Physiol., 105, 535–543, https://doi.org/10.1104/pp.105.2.535, 1994.
Maxwell, K. and Johnson, G. N.: Chlorophyll fluorescence a practical guide,
J. Exp. Bot., 51, 659–668, https://doi.org/10.1093/jexbot/51.345.659, 2000.
McKew, B. A., Davey, P., Finch, S. J., Hopkins, J., Lefebvre, S. C.,
Metodiev, M. V., Oxborough, K., Raines, C. A., Lawson, T., and Geider, R.
J.: The trade-off between the light-harvesting and photoprotective functions
of fucoxanthin-chlorophyll proteins dominates light acclimation in
Emiliania huxleyi (clone CCMP 1516), New Phytol., 200, 74–85, https://doi.org/10.1111/nph.12373, 2013.
McKie-Krisberg, Z. M. and Sanders, R. W.: Phagotrophy by the picoeukaryotic
green alga Micromonas: implications for Arctic Oceans, ISME J., 8, 1953–1961,
https://doi.org/10.1038/ismej.2014.16, 2014.
Meakin, N. G. and Wyman, M.: Rapid shifts in picoeukaryote community
structure in response to ocean acidification, ISME J., 5, 1397–1405, 2011.
Mehrbach, C., Culberson, C. H., Hawley, J. E., and Pytkowicz, R. M.:
Measurement of the apparent dissociation constants of carbonic acid in
seawater at atmospheric pressure, Limnol. Oceanogr., 18, 897–907,
https://doi.org/10.4319/lo.1973.18.6.0897, 1973.
Miller, G. H., Alley, R. B., Brigham-Grette, J., Fitzpatrick, J. J., Polyak,
L., Serreze, M. C., and White, J. W. C.: Arctic amplification: can the past
constrain the future?, Quaternary Sci. Rev., 29, 1779–1790,
https://doi.org/10.1016/j.quascirev.2010.02.008, 2010.
Mock, T. and Hoch, N.: Long-Term Temperature Acclimation of Photosynthesis
in Steady-State Cultures of the Polar Diatom Fragilariopsis cylindrus, Photosynth. Res., 85, 307–317,
https://doi.org/10.1007/s11120-005-5668-9, 2005.
Morgan-Kiss, R. M., Priscu, J. C., Pocock, T., Gudynaite-Savitch, L., and
Huner, N. P. A.: Adaptation and Acclimation of Photosynthetic Microorganisms
to Permanently Cold Environments, Microbiol. Mol. Biol. R., 70, 222–252, https://doi.org/10.1128/mmbr.70.1.222-252.2006, 2006.
Newbold, L. K., Oliver, A. E., Booth, T., Tiwari, B., DeSantis, T., Maguire,
M., Andersen, G., van der Gast, C. J., and Whiteley, A. S.: The response of
marine picoplankton to ocean acidification, Environ. Microbiol. 14,
2293–2307, https://doi.org/10.1111/j.1462-2920.2012.02762.x, 2012.
Oxborough, K.: FastPro8 GUI and FRRf3 systems documentation, Chelsea
Technologies Group Ltd, West Molesey, UK, 2012.
Paulsen, M. L., Riisgaard, K., Frede, T., St John, M., and Nielsen, T. G.:
Winter- spring transition in the subarcticAtlantic: microbial response to
deep mixingand pre-bloom production, Aquat. Microb. Ecol., 76, 49–69, 2015.
Pierrot, D. E., Lewis, E., and Wallace, D. W. R.: MS Exel Program Developed
for CO2 System Calculations, edited by: ORNL/CDIAC-105aCarbon Dioxide Information
Analysis Centre, O. R. N. L., US Department of Energy, Oak Ridge,
Tennessee, 2006.
Post, E.: Implications of earlier sea ice melt for phenological cascades in
arctic marine food webs, Food Webs, 13, 60–66,, https://doi.org/10.1016/j.fooweb.2016.11.002, 2016.
Qi, D., Chen, L., Chen, B., Gao, Z., Zhong, W., Feely, R. A., Anderson, L.
G., Sun, H., Chen, J., Chen, M., Zhan, L., Zhang, Y., and Cai, W.-J.:
Increase in acidifying water in the western Arctic Ocean, Nat. Clim.
Change, 7, 195–199, https://doi.org/10.1038/nclimate3228, 2017.
Raven, J.: The twelfth Tansley Lecture. Small is beautiful: the
picophytoplankton, Funct. Ecol., 12, 503–513, 1998.
Richardson, T. L. and Jackson, G. A.: Small Phytoplankton and Carbon Export
from the Surface Ocean, Science, 315, 838–840, https://doi.org/10.1126/science.1133471,
2007.
Riebesell, U. and Gattuso, J.-P.: Lessons learned from ocean acidification
research, Nat. Clim. Change, 5, 12–14, 2015.
Rost, B., Zondervan, I., and Wolf-Gladrow, D.: Sensitivity of phytoplankton
to future changes in ocean carbonate chemistry: Current knowledge,
contradictions and research needs, Mar. Ecol. Prog. Ser., 373, 227–237,
https://doi.org/10.3354/meps07776, 2008.
Sarthou, G., Timmermans, K. R., Blain, S., and Tréguer, P.: Growth
physiology and fate of diatoms in the ocean: a review, J. Sea Res., 53,
25–42, https://doi.org/10.1016/j.seares.2004.01.007, 2005.
Schaum, E., Rost, B., Millar, A. J., and Collins, S.: Variation in plastic
responses of a globally distributed picoplankton species to ocean
acidification, Nat. Clim. Change, 3, 298–302, https://doi.org/10.1038/nclimate1774,
2012.
Schulz, K. G., Bellerby, R. G. J., Brussaard, C. P. D., Büdenbender, J., Czerny, J.,
Engel, A., Fischer, M., Koch-Klavsen, S., Krug, S. A., Lischka, S., Ludwig, A.,
Meyerhöfer, M., Nondal, G., Silyakova, A., Stuhr, A., and Riebesell, U.:
Temporal biomass dynamics of an Arctic plankton bloom in response
to increasing levels of atmospheric carbon dioxide, Biogeosciences, 10, 161–180, https://doi.org/10.5194/bg-10-161-2013, 2013.
Schulz, K. G., Bach, L. T., Bellerby, R. G. J., Bermúdez, R.,
Büdenbender, J., Boxhammer, T., Czerny, J., Engel, A., Ludwig, A.,
Meyerhöfer, M., Larsen, A., Paul, A. J., Sswat, M., and Riebesell, U.:
Phytoplankton Blooms at Increasing Levels of Atmospheric Carbon Dioxide:
Experimental Evidence for Negative Effects on Prymnesiophytes and Positive
on Small Picoeukaryotes, Frontiers in Marine Science, 4, 64,
https://doi.org/10.3389/fmars.2017.00064, 2017.
Sett, S., Bach, L. T., Schulz, K. G., Koch-Klavsen, S., Lebrato, M., and
Riebesell, U.: Temperature Modulates Coccolithophorid Sensitivity of Growth,
Photosynthesis and Calcification to Increasing Seawater pCO2, PLoS One,
9, e88308, https://doi.org/10.1371/journal.pone.0088308, 2014.
Sett, S., Schulz, K. G., Bach, L. T., and Riebesell, U.: Shift towards
larger diatoms in a natural phytoplankton assemblage under combined
high-CO2 and warming conditions, J. Plankton Res.,
https://doi.org/10.1093/plankt/fby018, 2018.
Sherr, E. B. and Sherr, B. F.: Significance of predation by protists in
aquatic microbial food webs, Antonie Leeuwenhoek, 81, 293–308,
https://doi.org/10.1023/a:1020591307260, 2002.
Sherr, E. B., Sherr, B. F., Wheeler, P. A., and Thompson, K.: Temporal and
spatial variation in stocks of autotrophic and heterotrophic microbes in the
upper water column of the central Arctic Ocean, Deep-Sea Res. Pt. I, 50, 557–571, https://doi.org/10.1016/S0967-0637(03)00031-1,
2003.
Silsbe, G. M. and Kromkamp, J. C.: Modeling the irradiance dependency of
the quantum efficiency of photosynthesis, Limnol. Oceanogr.-Methods, 10,
645–652, 2012.
Šlapeta, J., López-García, P. N., and Moreira, D.: Global Dispersal and
Ancient Cryptic Species in the Smallest Marine Eukaryotes, Mol. Biol. Evol.,
23, 23–29, https://doi.org/10.1093/molbev/msj001, 2006.
Sommer, U., Paul, C., and Moustaka-Gouni, M.: Warming and ocean
acidification effects on phytoplankton – from species shifts to size shifts
within species in a mesocosm experiment, PLoS One, 10, e0125239, https://doi.org/10.1371/journal.pone.0125239, 2015.
Stocker, T.: Climate change 2013: the physical science basis: Working Group
I contribution to the Fifth assessment report of the Intergovernmental Panel
on Climate Change, Cambridge University Press, Cambridge, UK, 2014.
Stoll, M. H. C., Bakker, K., Nobbe, G. H., and Haese, R. R.: Continous-Flow
Analysis of Dissolved Inorganic Carbon Content in Seawater, Anal.
Chem., 73, 4111–4116, 2001.
Suggett, D. J., Borowitzka, M. A., and Prášil, O. E.: Chlorophyll a
Fluorescence in Aquatic Sciences: Methods and Applications, Developments in
Applied Phycology, Springer, Dordrecht, 326 p., 2010.
Taylor, A. R., Chrachri, A., Wheeler, G., Goddard, H., and Brownlee, C.: A
Voltage-Gated H+ Channel Underlying pH Homeostasis in Calcifying
Coccolithophores, PLoS Biol., 9, e1001085, https://doi.org/10.1371/journal.pbio.1001085, 2001.
Toseland, A., Daines, S. J., Clark, J. R., Kirkham, A., Strauss, J., Uhlig,
C., Lenton, T. M., Valentin, K., Pearson, G. A., Moulton, V., and Mock, T.:
The impact of temperature on marine phytoplankton resource allocation and
metabolism, Nat. Clim. Change, 3, 979–984, https://doi.org/10.1038/nclimate1989, 2013.
Tremblay, G., Belzile, C., Gosselin, M., Poulin, M., Roy, S., and Tremblay,
J. E.: Late summer phytoplankton distribution along a 3500 km transect in
Canadian Arctic waters: strong numerical dominance by picoeukaryotes, Aquat.
Microb. Ecol., 54, 55–70, 2009.
Tremblay, J.-É., Anderson, L. G., Matrai, P., Coupel, P., Bélanger,
S., Michel, C., and Reigstad, M.: Global and regional drivers of nutrient
supply, primary production and CO2 drawdown in the changing Arctic
Ocean, Prog. Oceanogr., 139, 171–196, https://doi.org/10.1016/j.pocean.2015.08.009,
2015.
Vader, A., Marquardt, M., Meshram, A. R., and Gabrielsen, T. M.: Key Arctic
phototrophs are widespread in the polar night, Polar Biol., 38, 13–21,
https://doi.org/10.1007/s00300-014-1570-2, 2015.
van de Waal, D. and Boersma, M.: Ecological stoichiometry in aquatic
ecosystems, in: Encyclopedia of Life Support Systems (EOLSS), Developed
under the Auspices of the UNESCO, edited by: UNESCO-EOLSS Joint Committee, Eolss
Publishers, Oxford, UK, 2012.
Waite, A. M., Safi, K. A., Hall, J. A., and Nodder, S. D.: Mass
sedimentation of picoplankton embedded in organic aggregates, Limnol.
Oceanogr., 45, 87–97, https://doi.org/10.4319/lo.2000.45.1.0087, 2000.
Wassmann, P. and Reigstad, M.: Future Arctic Ocean seasonal ice zones and
implications for pelagic-benthic coupling, Oceanography, 24, 220–231,
https://doi.org/10.5670/oceanog.2011.74, 2011.
Webb, W., Newton, M., and Starr, D.: Carbon dioxide exchange of Alnus rubra, Oecologia,
17, 281–291, https://doi.org/10.1007/bf00345747, 1974.
Wolf, K., Hoppe, C. J. M., and Rost, B.: Resilience by diversity: Large
intraspecific differences in climate change responses of an Arctic diatom,
Limnol. Oceanogr., 63, 397–411, https://doi.org/10.1002/lno.10639, 2018.
Worden, A. Z. and Not, F.: Ecology and diversity of picoeukaryotes,
Microbial Ecology of the Oceans, second edn., John Wiley & Sons, Hoboken, USA, 159–205, 2008.
Worden, A. Z., Follows, M. J., Giovannoni, S. J., Wilken, S., Zimmerman, A.
E., and Keeling, P. J.: Rethinking the marine carbon cycle: Factoring in the
multifarious lifestyles of microbes, Science, 347, 1257594, https://doi.org/10.1126/science.1257594,
2015.
Wu, Y., Campbell, D. A., Irwin, A. J., Suggett, D. J., and Finkel, Z. V.:
Ocean acidification enhances the growth rate of larger diatoms, Limnol. Oceanogr., 59, 1027–1034, https://doi.org/10.4319/lo.2014.59.3.1027, 2014.
Young, J. N., Goldman, J. A. L., Kranz, S. A., Tortell, P. D., and Morel, F.
M. M.: Slow carboxylation of Rubisco constrains the rate of carbon fixation
during Antarctic phytoplankton blooms, New Phytol., 205, 172–181,
https://doi.org/10.1111/nph.13021, 2014.
Zeebe, R. E. and Wolf-Gladrow, D. A.: CO2 in Seawater: Equilibrium,
Kinetics, Isotopes, Elsevier Science, Amsterdam, 2001.
Short summary
Responses of the Arctic microalgae Micromonas pusilla to different pCO2 levels were investigated at two temperatures. We observed that warming and ocean acidification (OA) synergistically increased growth rates. Furthermore, elevated temperature shifted the pCO2 optimum of biomass production to higher levels. This seem to be caused by more efficient photosynthesis under warmer and more acidic conditions. Our findings explain the dominance of picoeukaryotes frequently observed in OA experiments.
Responses of the Arctic microalgae Micromonas pusilla to different pCO2 levels were investigated...
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