Articles | Volume 18, issue 24
https://doi.org/10.5194/bg-18-6589-2021
© Author(s) 2021. 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-18-6589-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Contrasting patterns of carbon cycling and dissolved organic matter processing in two phytoplankton–bacteria communities
Tvärminne Zoological Station, University of Helsinki, Helsinki,
00014, Finland
Marine Research Centre, Finnish Environment Institute, Helsinki, 00790, Finland
Eeva Eronen-Rasimus
Marine Research Centre, Finnish Environment Institute, Helsinki, 00790, Finland
Eero Asmala
Tvärminne Zoological Station, University of Helsinki, Helsinki,
00014, Finland
current address: Geological Survey of Finland, Espoo, 02151, Finland
Tobias Tamelander
Tvärminne Zoological Station, University of Helsinki, Helsinki,
00014, Finland
Hermanni Kaartokallio
Marine Research Centre, Finnish Environment Institute, Helsinki, 00790, Finland
Related authors
No articles found.
Karol Kuliński, Gregor Rehder, Eero Asmala, Alena Bartosova, Jacob Carstensen, Bo Gustafsson, Per O. J. Hall, Christoph Humborg, Tom Jilbert, Klaus Jürgens, H. E. Markus Meier, Bärbel Müller-Karulis, Michael Naumann, Jørgen E. Olesen, Oleg Savchuk, Andreas Schramm, Caroline P. Slomp, Mikhail Sofiev, Anna Sobek, Beata Szymczycha, and Emma Undeman
Earth Syst. Dynam., 13, 633–685, https://doi.org/10.5194/esd-13-633-2022, https://doi.org/10.5194/esd-13-633-2022, 2022
Short summary
Short summary
The paper covers the aspects related to changes in carbon, nitrogen, and phosphorus (C, N, P) external loads; their transformations in the coastal zone; changes in organic matter production (eutrophication) and remineralization (oxygen availability); and the role of sediments in burial and turnover of C, N, and P. Furthermore, this paper also focuses on changes in the marine CO2 system, the structure of the microbial community, and the role of contaminants for biogeochemical processes.
Related subject area
Biogeochemistry: Coastal Ocean
Revisiting the applicability and constraints of molybdenum- and uranium-based paleo redox proxies: comparing two contrasting sill fjords
Influence of a small submarine canyon on biogenic matter export flux in the lower St. Lawrence Estuary, eastern Canada
Single-celled bioturbators: benthic foraminifera mediate oxygen penetration and prokaryotic diversity in intertidal sediment
Assessing impacts of coastal warming, acidification, and deoxygenation on Pacific oyster (Crassostrea gigas) farming: a case study in the Hinase area, Okayama Prefecture, and Shizugawa Bay, Miyagi Prefecture, Japan
Multiple nitrogen sources for primary production inferred from δ13C and δ15N in the southern Sea of Japan
The additionality problem of Ocean Alkalinity Enhancement
Influence of manganese cycling on alkalinity in the redox stratified water column of Chesapeake Bay
UAV approaches for improved mapping of vegetation cover and estimation of carbon storage of small saltmarshes: examples from Loch Fleet, northeast Scotland
Estuarine flocculation dynamics of organic carbon and metals from boreal acid sulfate soils
Drivers of particle sinking velocities in the Peruvian upwelling system
Marine anoxia initiates giant sulfur-bacteria mat proliferation and associated changes in benthic nitrogen, sulfur, and iron cycling in the Santa Barbara Basin, California Borderland
Uncertainty in the evolution of northwest North Atlantic circulation leads to diverging biogeochemical projections
Impacts and uncertainties of climate-induced changes in watershed inputs on estuarine hypoxia
Considerations for hypothetical carbon dioxide removal via alkalinity addition in the Amazon River watershed
High metabolism and periodic hypoxia associated with drifting macrophyte detritus in the shallow subtidal Baltic Sea
Oceanographic Processes Favoring Deoxygenation Inside Patagonian Fjords
Production and accumulation of reef framework by calcifying corals and macroalgae on a remote Indian Ocean cay
Zooplankton community succession and trophic links during a mesocosm experiment in the coastal upwelling off Callao Bay (Peru)
Temporal and spatial evolution of bottom-water hypoxia in the St Lawrence estuarine system
Significant nutrient consumption in the dark subsurface layer during a diatom bloom: a case study on Funka Bay, Hokkaido, Japan
Contrasts in dissolved, particulate, and sedimentary organic carbon from the Kolyma River to the East Siberian Shelf
Sediment quality assessment in an industrialized Greek coastal marine area (western Saronikos Gulf)
Limits and CO2 equilibration of near-coast alkalinity enhancement
Role of phosphorus in the seasonal deoxygenation of the East China Sea shelf
Interannual variability of the initiation of the phytoplankton growing period in two French coastal ecosystems
Iron “Ore” Nothing: Benthic iron fluxes from the oxygen-deficient Santa Barbara Basin enhance phytoplankton productivity in surface waters
Spatio-temporal distribution, photoreactivity and environmental control of dissolved organic matter in the sea-surface microlayer of the eastern marginal seas of China
Metabolic alkalinity release from large port facilities (Hamburg, Germany) and impact on coastal carbon storage
A Numerical reassessment of the Gulf of Mexico carbon system in connection with the Mississippi River and global ocean
Observed and projected global warming pressure on coastal hypoxia
Benthic alkalinity fluxes from coastal sediments of the Baltic and North seas: comparing approaches and identifying knowledge gaps
Investigating the effect of nickel concentration on phytoplankton growth to assess potential side-effects of ocean alkalinity enhancement
Unprecedented summer hypoxia in southern Cape Cod Bay: an ecological response to regional climate change?
Interannual variabilities, long-term trends, and regulating factors of low-oxygen conditions in the coastal waters off Hong Kong
Causes of the extensive hypoxia in the Gulf of Riga in 2018
Trawling effects on biogeochemical processes are mediated by fauna in high-energy biogenic-reef-inhabited coastal sediments
Drought recorded by Ba∕Ca in coastal benthic foraminifera
A nitrate budget of the Bohai Sea based on an isotope mass balance model
Suspended particulate matter drives the spatial segregation of nitrogen turnover along the hyper-turbid Ems estuary
Marine CO2 system variability along the northeast Pacific Inside Passage determined from an Alaskan ferry
Reviews and syntheses: Spatial and temporal patterns in seagrass metabolic fluxes
Mixed layer depth dominates over upwelling in regulating the seasonality of ecosystem functioning in the Peruvian upwelling system
Temporal dynamics of surface ocean carbonate chemistry in response to natural and simulated upwelling events during the 2017 coastal El Niño near Callao, Peru
Pelagic primary production in the coastal Mediterranean Sea: variability, trends, and contribution to basin-scale budgets
Biophysical controls on seasonal changes in the structure, growth, and grazing of the size-fractionated phytoplankton community in the northern South China Sea
Seasonal dispersal of fjord meltwaters as an important source of iron and manganese to coastal Antarctic phytoplankton
Modeling cyanobacteria life cycle dynamics and historical nitrogen fixation in the Baltic Proper
Simultaneous assessment of oxygen- and nitrate-based net community production in a temperate shelf sea from a single ocean glider
Reviews and syntheses: Physical and biogeochemical processes associated with upwelling in the Indian Ocean
Particulate organic carbon dynamics in the Gulf of Lion shelf (NW Mediterranean) using a coupled hydrodynamic–biogeochemical model
K. Mareike Paul, Martijn Hermans, Sami A. Jokinen, Inda Brinkmann, Helena L. Filipsson, and Tom Jilbert
Biogeosciences, 20, 5003–5028, https://doi.org/10.5194/bg-20-5003-2023, https://doi.org/10.5194/bg-20-5003-2023, 2023
Short summary
Short summary
Seawater naturally contains trace metals such as Mo and U, which accumulate under low oxygen conditions on the seafloor. Previous studies have used sediment Mo and U contents as an archive of changing oxygen concentrations in coastal waters. Here we show that in fjords the use of Mo and U for this purpose may be impaired by additional processes. Our findings have implications for the reliable use of Mo and U to reconstruct oxygen changes in fjords.
Hannah Sharpe, Michel Gosselin, Catherine Lalande, Alexandre Normandeau, Jean-Carlos Montero-Serrano, Khouloud Baccara, Daniel Bourgault, Owen Sherwood, and Audrey Limoges
Biogeosciences, 20, 4981–5001, https://doi.org/10.5194/bg-20-4981-2023, https://doi.org/10.5194/bg-20-4981-2023, 2023
Short summary
Short summary
We studied the impact of submarine canyon processes within the Pointe-des-Monts system on biogenic matter export and phytoplankton assemblages. Using data from three oceanographic moorings, we show that the canyon experienced two low-amplitude sediment remobilization events in 2020–2021 that led to enhanced particle fluxes in the deep-water column layer > 2.6 km offshore. Sinking phytoplankton fluxes were lower near the canyon compared to background values from the lower St. Lawrence Estuary.
Dewi Langlet, Florian Mermillod-Blondin, Noémie Deldicq, Arthur Bauville, Gwendoline Duong, Lara Konecny, Mylène Hugoni, Lionel Denis, and Vincent M. P. Bouchet
Biogeosciences, 20, 4875–4891, https://doi.org/10.5194/bg-20-4875-2023, https://doi.org/10.5194/bg-20-4875-2023, 2023
Short summary
Short summary
Benthic foraminifera are single-cell marine organisms which can move in the sediment column. They were previously reported to horizontally and vertically transport sediment particles, yet the impact of their motion on the dissolved fluxes remains unknown. Using microprofiling, we show here that foraminiferal burrow formation increases the oxygen penetration depth in the sediment, leading to a change in the structure of the prokaryotic community.
Masahiko Fujii, Ryuji Hamanoue, Lawrence Patrick Cases Bernardo, Tsuneo Ono, Akihiro Dazai, Shigeyuki Oomoto, Masahide Wakita, and Takehiro Tanaka
Biogeosciences, 20, 4527–4549, https://doi.org/10.5194/bg-20-4527-2023, https://doi.org/10.5194/bg-20-4527-2023, 2023
Short summary
Short summary
This is the first study of the current and future impacts of climate change on Pacific oyster farming in Japan. Future coastal warming and acidification may affect oyster larvae as a result of longer exposure to lower-pH waters. A prolonged spawning period may harm oyster processing by shortening the shipping period and reducing oyster quality. To minimize impacts on Pacific oyster farming, in addition to mitigation measures, local adaptation measures may be required.
Taketoshi Kodama, Atsushi Nishimoto, Ken-ichi Nakamura, Misato Nakae, Naoki Iguchi, Yosuke Igeta, and Yoichi Kogure
Biogeosciences, 20, 3667–3682, https://doi.org/10.5194/bg-20-3667-2023, https://doi.org/10.5194/bg-20-3667-2023, 2023
Short summary
Short summary
Carbon and nitrogen are essential elements for organisms; their stable isotope ratios (13C : 12C, 15N : 14N) are useful tools for understanding turnover and movement in the ocean. In the Sea of Japan, the environment is rapidly being altered by human activities. The 13C : 12C of small organic particles is increased by active carbon fixation, and phytoplankton growth increases the values. The 15N : 14N variations suggest that nitrates from many sources contribute to organic production.
Lennart Thomas Bach
Biogeosciences Discuss., https://doi.org/10.5194/bg-2023-122, https://doi.org/10.5194/bg-2023-122, 2023
Revised manuscript accepted for BG
Short summary
Short summary
Ocean Alkalinity Enhancement (OAE) is a widely considered marine carbon dioxide removal method. OAE aims to accelerate chemical rock weathering, which is a natural process that slowly sequesters atmospheric carbon dioxide. This study shows that the addition of anthropogenic alkalinity via OAE can reduce the natural release of alkalinity and therefore the efficiency of OAE for climate mitigation. However, this problem can be mitigated through dilute dosing of alkalinity into the environment.
Aubin Thibault de Chanvalon, George W. Luther, Emily R. Estes, Jennifer Necker, Bradley M. Tebo, Jianzhong Su, and Wei-Jun Cai
Biogeosciences, 20, 3053–3071, https://doi.org/10.5194/bg-20-3053-2023, https://doi.org/10.5194/bg-20-3053-2023, 2023
Short summary
Short summary
The intensity of the oceanic trap of CO2 released by anthropogenic activities depends on the alkalinity brought by continental weathering. Between ocean and continent, coastal water and estuaries can limit or favour the alkalinity transfer. This study investigate new interactions between dissolved metals and alkalinity in the oxygen-depleted zone of estuaries.
William Hiles, Lucy Catherine Miller, Craig Smeaton, and William Edward Newns Austin
EGUsphere, https://doi.org/10.5194/egusphere-2023-1185, https://doi.org/10.5194/egusphere-2023-1185, 2023
Short summary
Short summary
Saltmarsh soils may help to limit the rate of climate change by storing carbon. To understand their impacts, they must be accurately mapped. We use drone data to estimate the size of three saltmarshes in NE Scotland. We find that drone imagery, combined with tidal data, can reliably inform our understanding of saltmarsh size. When compared with previous work using vegetation communities, we find that our most reliable new estimates of stored carbon are 15–20 % smaller than previously estimated.
Joonas J. Virtasalo, Peter Österholm, and Eero Asmala
Biogeosciences, 20, 2883–2901, https://doi.org/10.5194/bg-20-2883-2023, https://doi.org/10.5194/bg-20-2883-2023, 2023
Short summary
Short summary
We mixed acidic metal-rich river water from acid sulfate soils and seawater in the laboratory to study the flocculation of dissolved metals and organic matter in estuaries. Al and Fe flocculated already at a salinity of 0–2 to large organic flocs (>80 µm size). Precipitation of Al and Fe hydroxide flocculi (median size 11 µm) began when pH exceeded ca. 5.5. Mn transferred weakly to Mn hydroxides and Co to the flocs. Up to 50 % of Cu was associated with the flocs, irrespective of seawater mixing.
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.
David J. Yousavich, De'Marcus Robinson, Xuefeng Peng, Sebastian J. E. Krause, Frank Wenzhoefer, Felix Janßen, Na Liu, Jonathan Tarn, Frank Kinnaman, David L. Valentine, and Tina Treude
EGUsphere, https://doi.org/10.5194/egusphere-2023-1198, https://doi.org/10.5194/egusphere-2023-1198, 2023
Short summary
Short summary
Declining oxygen concentrations in coastal oceans can threaten people’s ways of life and food supplies. Here we investigate how mats of bacteria that proliferate on the seafloor of the Santa Barbara Basin sustain and potentially worsen these oxygen depletion events through their unique chemoautotrophic metabolism. Our study shows how changes in seafloor microbiology and geochemistry brought on by declining oxygen concentrations can help these mats grow, and how that growth affects the basin.
Krysten Rutherford, Katja Fennel, Lina Garcia Suarez, and Jasmin G. John
EGUsphere, https://doi.org/10.5194/egusphere-2023-987, https://doi.org/10.5194/egusphere-2023-987, 2023
Short summary
Short summary
We downscaled two mid-century (~2075) ocean model projections to a high-resolution regional ocean model of the northwest North Atlantic (NA) shelf. In one projection, the NA shelf break current practically disappears; in the other it remains almost unchanged. This leads to a wide range of possible future shelf properties. More accurate projections of coastal circulation features would narrow the range of possible outcomes of biogeochemical projections for shelf regions.
Kyle E. Hinson, Marjorie A. M. Friedrichs, Raymond G. Najjar, Maria Herrmann, Zihao Bian, Gopal Bhatt, Pierre St-Laurent, Hanqin Tian, and Gary Shenk
Biogeosciences, 20, 1937–1961, https://doi.org/10.5194/bg-20-1937-2023, https://doi.org/10.5194/bg-20-1937-2023, 2023
Short summary
Short summary
Climate impacts are essential for environmental managers to consider when implementing nutrient reduction plans designed to reduce hypoxia. This work highlights relative sources of uncertainty in modeling regional climate impacts on the Chesapeake Bay watershed and consequent declines in bay oxygen levels. The results demonstrate that planned water quality improvement goals are capable of reducing hypoxia levels by half, offsetting climate-driven impacts on terrestrial runoff.
Linquan Mu, Jaime B. Palter, and Hongjie Wang
Biogeosciences, 20, 1963–1977, https://doi.org/10.5194/bg-20-1963-2023, https://doi.org/10.5194/bg-20-1963-2023, 2023
Short summary
Short summary
Enhancing ocean alkalinity accelerates carbon dioxide removal from the atmosphere. We hypothetically added alkalinity to the Amazon River and examined the increment of the carbon uptake by the Amazon plume. We also investigated the minimum alkalinity addition in which this perturbation at the river mouth could be detected above the natural variability.
Karl M. Attard, Anna Lyssenko, and Iván F. Rodil
Biogeosciences, 20, 1713–1724, https://doi.org/10.5194/bg-20-1713-2023, https://doi.org/10.5194/bg-20-1713-2023, 2023
Short summary
Short summary
Aquatic plants produce a large amount of organic matter through photosynthesis that, following erosion, is deposited on the seafloor. In this study, we show that plant detritus can trigger low-oxygen conditions (hypoxia) in shallow coastal waters, making conditions challenging for most marine animals. We propose that the occurrence of hypoxia may be underestimated because measurements typically do not consider the region closest to the seafloor, where detritus accumulates.
Pamela Linford, Iván Pérez-Santos, Paulina Montero, Patricio Díaz, Claudia Aracena, Elías Pinilla, Facundo Barrera, Manuel Castillo, Aida Alvera-Azcárate, Mónica Alvarado, Gabriel Soto, Cécile Pujol, Camila Schwerter, Sara Arenas-Uribe, Pilar Navarro, Guido Mancilla-Gutiérrez, Robinson Altamirano, Javiera San Martín, and Camila Soto-Riquelme
EGUsphere, https://doi.org/10.5194/egusphere-2023-706, https://doi.org/10.5194/egusphere-2023-706, 2023
Short summary
Short summary
The Patagonian fjord is one world region where low-oxygen water and hypoxia conditions is observed. An in-situ data set was used to quantify the mechanism involved in the presence of low-oxygen water and hypoxic conditions in northern Patagonian fjords. Water mass analysis confirmed the contribution of equatorial subsurface water in the advection of the low-oxygen water and hypoxic conditions occurred when the community respiration rate exceeded the gross primary production.
M. James McLaughlin, Cindy Bessey, Gary A. Kendrick, John Keesing, and Ylva S. Olsen
Biogeosciences, 20, 1011–1026, https://doi.org/10.5194/bg-20-1011-2023, https://doi.org/10.5194/bg-20-1011-2023, 2023
Short summary
Short summary
Coral reefs face increasing pressures from environmental change at present. The coral reef framework is produced by corals and calcifying algae. The Kimberley region of Western Australia has escaped land-based anthropogenic impacts. Specimens of the dominant coral and algae were collected from Browse Island's reef platform and incubated in mesocosms to measure calcification and production patterns of oxygen. This study provides important data on reef building and climate-driven effects.
Patricia Ayón Dejo, Elda Luz Pinedo Arteaga, Anna Schukat, Jan Taucher, Rainer Kiko, Helena Hauss, Sabrina Dorschner, Wilhelm Hagen, Mariona Segura-Noguera, and Silke Lischka
Biogeosciences, 20, 945–969, https://doi.org/10.5194/bg-20-945-2023, https://doi.org/10.5194/bg-20-945-2023, 2023
Short summary
Short summary
Ocean upwelling regions are highly productive. With ocean warming, severe changes in upwelling frequency and/or intensity and expansion of accompanying oxygen minimum zones are projected. In a field experiment off Peru, we investigated how different upwelling intensities affect the pelagic food web and found failed reproduction of dominant zooplankton. The changes projected could severely impact the reproductive success of zooplankton communities and the pelagic food web in upwelling regions.
Mathilde Jutras, Alfonso Mucci, Gwenaëlle Chaillou, William A. Nesbitt, and Douglas W. R. Wallace
Biogeosciences, 20, 839–849, https://doi.org/10.5194/bg-20-839-2023, https://doi.org/10.5194/bg-20-839-2023, 2023
Short summary
Short summary
The deep waters of the lower St Lawrence Estuary and gulf have, in the last decades, experienced a strong decline in their oxygen concentration. Below 65 µmol L-1, the waters are said to be hypoxic, with dire consequences for marine life. We show that the extent of the hypoxic zone shows a seven-fold increase in the last 20 years, reaching 9400 km2 in 2021. After a stable period at ~ 65 µmol L⁻¹ from 1984 to 2019, the oxygen level also suddenly decreased to ~ 35 µmol L-1 in 2020.
Sachi Umezawa, Manami Tozawa, Yuichi Nosaka, Daiki Nomura, Hiroji Onishi, Hiroto Abe, Tetsuya Takatsu, and Atsushi Ooki
Biogeosciences, 20, 421–438, https://doi.org/10.5194/bg-20-421-2023, https://doi.org/10.5194/bg-20-421-2023, 2023
Short summary
Short summary
We conducted repetitive observations in Funka Bay, Japan, during the spring bloom 2019. We found nutrient concentration decreases in the dark subsurface layer during the bloom. Incubation experiments confirmed that diatoms could consume nutrients at a substantial rate, even in darkness. We concluded that the nutrient reduction was mainly caused by nutrient consumption by diatoms in the dark.
Dirk Jong, Lisa Bröder, Tommaso Tesi, Kirsi H. Keskitalo, Nikita Zimov, Anna Davydova, Philip Pika, Negar Haghipour, Timothy I. Eglinton, and Jorien E. Vonk
Biogeosciences, 20, 271–294, https://doi.org/10.5194/bg-20-271-2023, https://doi.org/10.5194/bg-20-271-2023, 2023
Short summary
Short summary
With this study, we want to highlight the importance of studying both land and ocean together, and water and sediment together, as these systems function as a continuum, and determine how organic carbon derived from permafrost is broken down and its effect on global warming. Although on the one hand it appears that organic carbon is removed from sediments along the pathway of transport from river to ocean, it also appears to remain relatively ‘fresh’, despite this removal and its very old age.
Georgia Filippi, Manos Dassenakis, Vasiliki Paraskevopoulou, and Konstantinos Lazogiannis
Biogeosciences, 20, 163–189, https://doi.org/10.5194/bg-20-163-2023, https://doi.org/10.5194/bg-20-163-2023, 2023
Short summary
Short summary
The pollution of the western Saronikos Gulf from heavy metals has been examined through the study of marine sediment cores. It is a deep gulf (maximum depth 440 m) near Athens affected by industrial and volcanic activity. Eight cores were received from various stations and depths and analysed for their heavy metal content and geochemical characteristics. The results were evaluated by using statistical methods, environmental indicators and comparisons with old data.
Jing He and Michael D. Tyka
Biogeosciences, 20, 27–43, https://doi.org/10.5194/bg-20-27-2023, https://doi.org/10.5194/bg-20-27-2023, 2023
Short summary
Short summary
Recently, ocean alkalinity enhancement (OAE) has gained interest as a scalable way to address the urgent need for negative CO2 emissions. In this paper we examine the capacity of different coastlines to tolerate alkalinity enhancement and the time scale of CO2 uptake following the addition of a given quantity of alkalinity. The results suggest that OAE has significant potential and identify specific favorable and unfavorable coastlines for its deployment.
Arnaud Laurent, Haiyan Zhang, and Katja Fennel
Biogeosciences, 19, 5893–5910, https://doi.org/10.5194/bg-19-5893-2022, https://doi.org/10.5194/bg-19-5893-2022, 2022
Short summary
Short summary
The Changjiang is the main terrestrial source of nutrients to the East China Sea (ECS). Nutrient delivery to the ECS has been increasing since the 1960s, resulting in low oxygen (hypoxia) during phytoplankton decomposition in summer. River phosphorus (P) has increased less than nitrogen, and therefore, despite the large nutrient delivery, phytoplankton growth can be limited by the lack of P. Here, we investigate this link between P limitation, phytoplankton production/decomposition, and hypoxia.
Coline Poppeschi, Guillaume Charria, Anne Daniel, Romaric Verney, Peggy Rimmelin-Maury, Michaël Retho, Eric Goberville, Emilie Grossteffan, and Martin Plus
Biogeosciences, 19, 5667–5687, https://doi.org/10.5194/bg-19-5667-2022, https://doi.org/10.5194/bg-19-5667-2022, 2022
Short summary
Short summary
This paper aims to understand interannual changes in the initiation of the phytoplankton growing period (IPGP) in the current context of global climate changes over the last 20 years. An important variability in the timing of the IPGP is observed with a trend towards a later IPGP during this last decade. The role and the impact of extreme events (cold spells, floods, and wind burst) on the IPGP is also detailed.
De’Marcus Robinson, Anh L. D. Pham, David J. Yousavich, Felix Janssen, Frank Wenzhöfer, Eleanor C. Arrington, Kelsey M. Gosselin, Marco Sandoval-Belmar, Matthew Mar, David L. Valentine, Daniele Bianchi, and Tina Treude
Biogeosciences Discuss., https://doi.org/10.5194/bg-2022-237, https://doi.org/10.5194/bg-2022-237, 2022
Revised manuscript accepted for BG
Short summary
Short summary
The present study suggests that high release of ferrous iron from the seafloor of the oxygen-deficient Santa Barabara Basin (California) supports surface primary productivity, creating positive feedback on seafloor iron release by enhancing low oxygen conditions in the basin.
Lin Yang, Jing Zhang, Anja Engel, and Gui-Peng Yang
Biogeosciences, 19, 5251–5268, https://doi.org/10.5194/bg-19-5251-2022, https://doi.org/10.5194/bg-19-5251-2022, 2022
Short summary
Short summary
Enrichment factors of dissolved organic matter (DOM) in the eastern marginal seas of China exhibited a significant spatio-temporal variation. Photochemical and enrichment processes co-regulated DOM enrichment in the sea-surface microlayer (SML). Autochthonous DOM was more frequently enriched in the SML than terrestrial DOM. DOM in the sub-surface water exhibited higher aromaticity than that in the SML.
Mona Norbisrath, Johannes Pätsch, Kirstin Dähnke, Tina Sanders, Gesa Schulz, Justus E. E. van Beusekom, and Helmuth Thomas
Biogeosciences, 19, 5151–5165, https://doi.org/10.5194/bg-19-5151-2022, https://doi.org/10.5194/bg-19-5151-2022, 2022
Short summary
Short summary
Total alkalinity (TA) regulates the oceanic storage capacity of atmospheric CO2. TA is also metabolically generated in estuaries and influences coastal carbon storage through its inflows. We used water samples and identified the Hamburg port area as the one with highest TA generation. Of the overall riverine TA load, 14 % is generated within the estuary. Using a biogeochemical model, we estimated potential effects on the coastal carbon storage under possible anthropogenic and climate changes.
Le Zhang and Z. George Xue
Biogeosciences, 19, 4589–4618, https://doi.org/10.5194/bg-19-4589-2022, https://doi.org/10.5194/bg-19-4589-2022, 2022
Short summary
Short summary
We adopt a high-resolution carbon model for the Gulf of Mexico (GoM) and calculate the decadal trends of important carbon system variables in the GoM from 2001 to 2019. The GoM surface CO2 values experienced a steady increase over the past 2 decades, and the ocean surface pH is declining. Although carbonate saturation rates remain supersaturated with aragonite, they show a slightly decreasing trend. The northern GoM is a stronger carbon sink than we thought.
Michael M. Whitney
Biogeosciences, 19, 4479–4497, https://doi.org/10.5194/bg-19-4479-2022, https://doi.org/10.5194/bg-19-4479-2022, 2022
Short summary
Short summary
Coastal hypoxia is a major environmental problem of increasing severity. The 21st-century projections analyzed indicate global coastal waters will warm and experience rapid declines in oxygen. The forecasted median coastal trends for increasing sea surface temperature and decreasing oxygen capacity are 48 % and 18 % faster than the rates observed over the last 4 decades. Existing hypoxic areas are expected to worsen, and new hypoxic areas likely will emerge under these warming-related pressures.
Bryce Van Dam, Nele Lehmann, Mary A. Zeller, Andreas Neumann, Daniel Pröfrock, Marko Lipka, Helmuth Thomas, and Michael Ernst Böttcher
Biogeosciences, 19, 3775–3789, https://doi.org/10.5194/bg-19-3775-2022, https://doi.org/10.5194/bg-19-3775-2022, 2022
Short summary
Short summary
We quantified sediment–water exchange at shallow sites in the North and Baltic seas. We found that porewater irrigation rates in the former were approximately twice as high as previously estimated, likely driven by relatively high bioirrigative activity. In contrast, we found small net fluxes of alkalinity, ranging from −35 µmol m−2 h−1 (uptake) to 53 µmol m−2 h−1 (release). We attribute this to low net denitrification, carbonate mineral (re-)precipitation, and sulfide (re-)oxidation.
Jiaying Abby Guo, Robert Strzepek, Anusuya Willis, Aaron Ferderer, and Lennart Thomas Bach
Biogeosciences, 19, 3683–3697, https://doi.org/10.5194/bg-19-3683-2022, https://doi.org/10.5194/bg-19-3683-2022, 2022
Short summary
Short summary
Ocean alkalinity enhancement is a CO2 removal method with significant potential, but it can lead to a perturbation of the ocean with trace metals such as nickel. This study tested the effect of increasing nickel concentrations on phytoplankton growth and photosynthesis. We found that the response to nickel varied across the 11 phytoplankton species tested here, but the majority were rather insensitive. We note, however, that responses may be different under other experimental conditions.
Malcolm E. Scully, W. Rockwell Geyer, David Borkman, Tracy L. Pugh, Amy Costa, and Owen C. Nichols
Biogeosciences, 19, 3523–3536, https://doi.org/10.5194/bg-19-3523-2022, https://doi.org/10.5194/bg-19-3523-2022, 2022
Short summary
Short summary
For two consecutive summers, the bottom waters in southern Cape Cod Bay became severely depleted of dissolved oxygen. Low oxygen levels in bottom waters have never been reported in this area before, and this unprecedented occurrence is likely the result of a new algae species that recently began blooming during the late-summer months. We present data suggesting that blooms of this new species are the result of regional climate change including warmer waters and changes in summer winds.
Zheng Chen, Bin Wang, Chuang Xu, Zhongren Zhang, Shiyu Li, and Jiatang Hu
Biogeosciences, 19, 3469–3490, https://doi.org/10.5194/bg-19-3469-2022, https://doi.org/10.5194/bg-19-3469-2022, 2022
Short summary
Short summary
Deterioration of low-oxygen conditions in the coastal waters off Hong Kong was revealed by monitoring data over two decades. The declining wind forcing and the increasing nutrient input contributed significantly to the areal expansion and intense deterioration of low-oxygen conditions. Also, the exacerbated eutrophication drove a shift in the dominant source of organic matter from terrestrial inputs to in situ primary production, which has probably led to an earlier onset of hypoxia in summer.
Stella-Theresa Stoicescu, Jaan Laanemets, Taavi Liblik, Māris Skudra, Oliver Samlas, Inga Lips, and Urmas Lips
Biogeosciences, 19, 2903–2920, https://doi.org/10.5194/bg-19-2903-2022, https://doi.org/10.5194/bg-19-2903-2022, 2022
Short summary
Short summary
Coastal basins with high input of nutrients often suffer from oxygen deficiency. In summer 2018, the extent of oxygen depletion was exceptional in the Gulf of Riga. We analyzed observational data and found that extensive oxygen deficiency appeared since the water layer close to the seabed, where oxygen is consumed, was separated from the surface layer. The problem worsens if similar conditions restricting vertical transport of oxygen occur more frequently in the future.
Justin C. Tiano, Jochen Depestele, Gert Van Hoey, João Fernandes, Pieter van Rijswijk, and Karline Soetaert
Biogeosciences, 19, 2583–2598, https://doi.org/10.5194/bg-19-2583-2022, https://doi.org/10.5194/bg-19-2583-2022, 2022
Short summary
Short summary
This study gives an assessment of bottom trawling on physical, chemical, and biological characteristics in a location known for its strong currents and variable habitats. Although trawl gears only removed the top 1 cm of the seabed surface, impacts on reef-building tubeworms significantly decreased carbon and nutrient cycling. Lighter trawls slightly reduced the impact on fauna and nutrients. Tubeworms were strongly linked to biogeochemical and faunal aspects before but not after trawling.
Inda Brinkmann, Christine Barras, Tom Jilbert, Tomas Næraa, K. Mareike Paul, Magali Schweizer, and Helena L. Filipsson
Biogeosciences, 19, 2523–2535, https://doi.org/10.5194/bg-19-2523-2022, https://doi.org/10.5194/bg-19-2523-2022, 2022
Short summary
Short summary
The concentration of the trace metal barium (Ba) in coastal seawater is a function of continental input, such as riverine discharge. Our geochemical records of the severely hot and dry year 2018, and following wet year 2019, reveal that prolonged drought imprints with exceptionally low Ba concentrations in benthic foraminiferal calcium carbonates of coastal sediments. This highlights the potential of benthic Ba / Ca to trace past climate extremes and variability in coastal marine records.
Shichao Tian, Birgit Gaye, Jianhui Tang, Yongming Luo, Wenguo Li, Niko Lahajnar, Kirstin Dähnke, Tina Sanders, Tianqi Xiong, Weidong Zhai, and Kay-Christian Emeis
Biogeosciences, 19, 2397–2415, https://doi.org/10.5194/bg-19-2397-2022, https://doi.org/10.5194/bg-19-2397-2022, 2022
Short summary
Short summary
We constrain the nitrogen budget and in particular the internal sources and sinks of nitrate in the Bohai Sea by using a mass-based and dual stable isotope approach based on δ15N and δ18O of nitrate. Based on available mass fluxes and isotope data an updated nitrogen budget is proposed. Compared to previous estimates, it is more complete and includes the impact of the interior cycle (nitrification) on the nitrate pool. The main external nitrogen sources are rivers contributing 19.2 %–25.6 %.
Gesa Schulz, Tina Sanders, Justus E. E. van Beusekom, Yoana G. Voynova, Andreas Schöl, and Kirstin Dähnke
Biogeosciences, 19, 2007–2024, https://doi.org/10.5194/bg-19-2007-2022, https://doi.org/10.5194/bg-19-2007-2022, 2022
Short summary
Short summary
Estuaries can significantly alter nutrient loads before reaching coastal waters. Our study of the heavily managed Ems estuary (Northern Germany) reveals three zones of nitrogen turnover along the estuary with water-column denitrification in the most upstream hyper-turbid part, nitrate production in the middle reaches and mixing/nitrate uptake in the North Sea. Suspended particulate matter was the overarching control on nitrogen cycling in the hyper-turbid estuary.
Wiley Evans, Geoffrey T. Lebon, Christen D. Harrington, Yuichiro Takeshita, and Allison Bidlack
Biogeosciences, 19, 1277–1301, https://doi.org/10.5194/bg-19-1277-2022, https://doi.org/10.5194/bg-19-1277-2022, 2022
Short summary
Short summary
Information on the marine carbon dioxide system along the northeast Pacific Inside Passage has been limited. To address this gap, we instrumented an Alaskan ferry in order to characterize the marine carbon dioxide system in this region. Data over a 2-year period were used to assess drivers of the observed variability, identify the timing of severe conditions, and assess the extent of contemporary ocean acidification as well as future levels consistent with a 1.5 °C warmer climate.
Melissa Ward, Tye L. Kindinger, Heidi K. Hirsh, Tessa M. Hill, Brittany M. Jellison, Sarah Lummis, Emily B. Rivest, George G. Waldbusser, Brian Gaylord, and Kristy J. Kroeker
Biogeosciences, 19, 689–699, https://doi.org/10.5194/bg-19-689-2022, https://doi.org/10.5194/bg-19-689-2022, 2022
Short summary
Short summary
Here, we synthesize the results from 62 studies reporting in situ rates of seagrass metabolism to highlight spatial and temporal variability in oxygen fluxes and inform efforts to use seagrass to mitigate ocean acidification. Our analyses suggest seagrass meadows are generally autotrophic and variable in space and time, and the effects on seawater oxygen are relatively small in magnitude.
Tianfei Xue, Ivy Frenger, A. E. Friederike Prowe, Yonss Saranga José, and Andreas Oschlies
Biogeosciences, 19, 455–475, https://doi.org/10.5194/bg-19-455-2022, https://doi.org/10.5194/bg-19-455-2022, 2022
Short summary
Short summary
The Peruvian system supports 10 % of the world's fishing yield. In the Peruvian system, wind and earth’s rotation bring cold, nutrient-rich water to the surface and allow phytoplankton to grow. But observations show that it grows worse at high upwelling. Using a model, we find that high upwelling happens when air mixes the water the most. Then phytoplankton is diluted and grows slowly due to low light and cool upwelled water. This study helps to estimate how it might change in a warming climate.
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.
Paula Maria Salgado-Hernanz, Aurore Regaudie-de-Gioux, David Antoine, and Gotzon Basterretxea
Biogeosciences, 19, 47–69, https://doi.org/10.5194/bg-19-47-2022, https://doi.org/10.5194/bg-19-47-2022, 2022
Short summary
Short summary
For the first time, this study presents the characteristics of primary production in coastal regions of the Mediterranean Sea based on satellite-borne observations for the period 2002–2016. The study concludes that there are significant spatial and temporal variations among different regions. Quantifying primary production is of special importance in the marine food web and in the sequestration of carbon dioxide from the atmosphere to the deep waters.
Yuan Dong, Qian P. Li, Zhengchao Wu, Yiping Shuai, Zijia Liu, Zaiming Ge, Weiwen Zhou, and Yinchao Chen
Biogeosciences, 18, 6423–6434, https://doi.org/10.5194/bg-18-6423-2021, https://doi.org/10.5194/bg-18-6423-2021, 2021
Short summary
Short summary
Temporal change of plankton growth and grazing are less known in the coastal ocean, not to mention the relevant controlling mechanisms. Here, we performed monthly size-specific dilution experiments outside a eutrophic estuary over a 1-year cycle. Phytoplankton growth was correlated to nutrients and grazing mortality to total chlorophyll a. A selective grazing on small cells may be important for maintaining high abundance of large-chain-forming diatoms in this eutrophic system.
Kiefer O. Forsch, Lisa Hahn-Woernle, Robert M. Sherrell, Vincent J. Roccanova, Kaixuan Bu, David Burdige, Maria Vernet, and Katherine A. Barbeau
Biogeosciences, 18, 6349–6375, https://doi.org/10.5194/bg-18-6349-2021, https://doi.org/10.5194/bg-18-6349-2021, 2021
Short summary
Short summary
We show that for an unperturbed cold western Antarctic Peninsula fjord, the seasonality of iron and manganese is linked to the dispersal of metal-rich meltwater sources. Geochemical measurements of trace metals in meltwaters, porewaters, and seawater, collected during two expeditions, showed a seasonal cycle of distinct sources. Finally, model results revealed that the dispersal of surface meltwater and meltwater plumes originating from under the glacier is sensitive to katabatic wind events.
Jenny Hieronymus, Kari Eilola, Malin Olofsson, Inga Hense, H. E. Markus Meier, and Elin Almroth-Rosell
Biogeosciences, 18, 6213–6227, https://doi.org/10.5194/bg-18-6213-2021, https://doi.org/10.5194/bg-18-6213-2021, 2021
Short summary
Short summary
Dense blooms of cyanobacteria occur every summer in the Baltic Proper and can add to eutrophication by their ability to turn nitrogen gas into dissolved inorganic nitrogen. Being able to correctly estimate the size of this nitrogen fixation is important for management purposes. In this work, we find that the life cycle of cyanobacteria plays an important role in capturing the seasonality of the blooms as well as the size of nitrogen fixation in our ocean model.
Tom Hull, Naomi Greenwood, Antony Birchill, Alexander Beaton, Matthew Palmer, and Jan Kaiser
Biogeosciences, 18, 6167–6180, https://doi.org/10.5194/bg-18-6167-2021, https://doi.org/10.5194/bg-18-6167-2021, 2021
Short summary
Short summary
The shallow shelf seas play a large role in the global cycling of CO2 and also support large fisheries. We use an autonomous underwater vehicle in the central North Sea to measure the rates of change in oxygen and nutrients.
Using these data we determine the amount of carbon dioxide taken out of the atmosphere by the sea and measure how productive the region is.
These observations will be useful for improving our predictive models and help us predict and adapt to a changing ocean.
Puthenveettil Narayana Menon Vinayachandran, Yukio Masumoto, Michael J. Roberts, Jenny A. Huggett, Issufo Halo, Abhisek Chatterjee, Prakash Amol, Garuda V. M. Gupta, Arvind Singh, Arnab Mukherjee, Satya Prakash, Lynnath E. Beckley, Eric Jorden Raes, and Raleigh Hood
Biogeosciences, 18, 5967–6029, https://doi.org/10.5194/bg-18-5967-2021, https://doi.org/10.5194/bg-18-5967-2021, 2021
Short summary
Short summary
Upwelling in the coastal ocean triggers biological productivity and thus enhances fisheries. Therefore, understanding the phenomenon of upwelling and the underlying mechanisms is important. In this paper, the present understanding of the upwelling along the coastline of the Indian Ocean from the coast of Africa all the way up to the coast of Australia is reviewed. The review provides a synthesis of the physical processes associated with upwelling and its impact on the marine ecosystem.
Gaël Many, Caroline Ulses, Claude Estournel, and Patrick Marsaleix
Biogeosciences, 18, 5513–5538, https://doi.org/10.5194/bg-18-5513-2021, https://doi.org/10.5194/bg-18-5513-2021, 2021
Short summary
Short summary
The Gulf of Lion shelf is one of the most productive areas in the Mediterranean. A model is used to study the mechanisms that drive the particulate organic carbon (POC). The model reproduces the annual cycle of primary production well. The shelf appears as an autotrophic ecosystem with a high production and as a source of POC for the adjacent basin. The increase in temperature induced by climate change could impact the trophic status of the shelf.
Cited articles
Allers, E., Gómez-Consarnau, L., Pinhassi, J., Gasol, J. M., Šimek,
K., and Pernthaler, J.: Response of Alteromonadaceae and Rhodobacteriaceae to
glucose and phosphorus manipulation in marine mesocosms, Environ.
Microbiol., 9, 2417–2429, https://doi.org/10.1111/j.1462-2920.2007.01360.x, 2007.
Alonso-Sáez, L., Unanue, M., Latatu, A., Azua, I., Ayo, B., Artolozaga,
I., and Iriberri, J.: Changes in marine prokaryotic community induced by
varying types of dissolved organic matter and subsequent grazing pressure,
J. Plankton Res., 31, 1373–1383, https://doi.org/10.1093/plankt/fbp081, 2009.
Amin, S. A., Green, D. H., Hart, M. C., Küpper, F. C., Sunda, W. G., and
Carrano, C. J.: Photolysis of iron – siderophore chelates promotes
bacterial – algal mutualism, P. Natl. Acad. Sci. USA, 106, 17071–17076,
https://doi.org/10.1073/pnas.0905512106, 2009.
Anderson, M. J.: A new method for non-parametric multivariate analysis of
variance, Austral. Ecol., 26, 32–46,
https://doi.org/10.1111/j.1442-9993.2001.01070.pp.x, 2001.
Asmala, E., Haraguchi, L., Markager, S., Massicotte, P., Riemann, B.,
Staehr, P. A., and Carstensen, J.: Eutrophication Leads to Accumulation of
Recalcitrant Autochthonous Organic Matter in Coastal Environment, Global
Biogeochem. Cy., 32(11), 1673–1687, https://doi.org/10.1029/2017GB005848, 2018.
Azam, F., Fenchel, T. M., Field, J. G., Gray, J. S., Meyer-Reil, L. A., and
Thingstad, F.: The ecological role of water-column microbes in the sea, Mar.
Ecol. Prog. Ser., 10, 257–263, https://doi.org/10.3354/meps010257, 1983.
Ballen-Segura, M., Felip, M., and Catalan, J.: Some mixotrophic flagellate
species selectively graze on archaea, Appl. Environ. Microbiol., 83,
1–11, https://doi.org/10.1128/AEM.02317-16, 2017.
Becker, J. W., Berube, P. M., Follett, C. L., Waterbury, J. B., Chisholm, S.
W., DeLong, E. F., and Repeta, D. J.: Closely related phytoplankton species
produce similar suites of dissolved organic matter, Front. Microbiol., 5,
1–14, https://doi.org/10.3389/fmicb.2014.00111, 2014.
Berggren, M., Laudon, H., and Jansson, M.: Aging of allochthonous organic
carbon regulates bacterial production in unproductive boreal lakes, Limnol.
Oceanogr., 54, 1333–1342, https://doi.org/10.4319/lo.2009.54.4.1333, 2009.
Bjørnsen, P. K.: Phytoplankton exudation of organic matter: Why do
healthy cells do it?, Limnol. Oceanogr., 33, 151–154,
https://doi.org/10.4319/lo.1988.33.1.0151, 1988.
Bronk, D. A. and Glibert, P. M.: Application of a 15N tracer method to the
study of dissolved organic nitrogen uptake during spring and summer in
Chesapeake Bay, Mar. Biol., 115, 501–508, 1993.
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 [code], Nat. Method., 13, 581–583, https://doi.org/10.1038/nmeth.3869, 2016.
Camarena-Gómez, M. T., Lipsewers, T., Piiparinen, J., Eronen-Rasimus,
E., Perez-Quemaliños, D., Hoikkala, L., Sobrino, C., and Spilling, K.:
Shifts in phytoplankton community structure modify bacterial production ,
abundance and community composition, Aquat. Microb. Ecol., 81,
149–170, https://doi.org/10.3354/ame01868, 2018.
Camiro-vargas, T. K., Hernández-Ayón, J. M., Valenzuela-espinoza,
E., Delgadillo-hinojosa, F., and Ramón, C.-M.: Dissolved inorganic carbon
uptake by Rhodomonas sp. and Isochrysis aff . galbana determined by a
potentiometric technique, Aquac. Eng., 33, 83–95,
https://doi.org/10.1016/j.aquaeng.2004.10.001, 2005.
Chen, W. and Wangersky, P. J.: Production of dissolved organic carbon in
phytoplankton cultures as measured by high-temperature catalytic oxidation
and ultraviolet photo-oxidation methods, J. Plankton Res., 18,
1201–1211, 1996.
Chin-Leo, G. and Kirchman, D.: Unbalanced growth in natural assemblages of
marine bacterioplankton, Mar. Ecol. Prog. Ser., 63, 1–8,
https://doi.org/10.3354/meps063001, 1990.
Christie-Oleza, J. A., Sousoni, D., Lloyd, M., Armengaud, J., and Scanlan, D.
J.: Nutrient recycling facilitates long-term stability of marine microbial
phototroph-heterotroph interactions, Nat. Microbiol., 2, 1–10,
https://doi.org/10.1038/nmicrobiol.2017.100, 2017.
Coble, P. G.: Characterization of marine and terrestrial DOM in the seawater
using exciting-emission matrix spectroscopy, Mar. Chem., 51, 325–346,
https://doi.org/10.1016/0304-4203(95)00062-3, 1996.
Cottrell, M. T. and Kirchman, D. L.: Natural Assemblages of Marine
Proteobacteria and Members of the Cytophaga-Flavobacter Cluster Consuming
Low- and High- Molecular-Weight Dissolved Organic Matter, Appl. Environ.
Microbiol., 66, 1692–1697, 2000.
Croft, M. T., Lawrence, A. D., Raux-Deery, E., Warren, M. J., and Smith, A.
G.: Algae acquire vitamin B12 through a symbiotic relationship with
bacteria, Nature, 438, 90–93, https://doi.org/10.1038/nature04056, 2005.
Ducklow, H. W. and Carlson, C. A.: Oceanic Bacterial Productivity, in
Advances in Microbial Ecology, Plenum Press, New York, NY, 1992.
Elovaara, S., Eronen-Rasimus, E., Asmala, E., Tamelander, T., and
Kaartokallio, H.: Phytoplankton and bacterial production, 14C-transfer and
optical characteristics of dissolved organic matter (DOM) from a microcosm
experiment, Gulf of Finland, Baltic Sea, PANGAEA,
https://doi.org/10.1594/PANGAEA.937723, 2021.
Elzenga, J. T. M., Prins, H. B. A., and Stefels, J.: The role of
extracellular carbonic anhydrase activity in inorganic carbon utilization of
Phaeocystis globosa ( Prymnesiophyceae ): A comparison with other marine
algae using the isotopic disequilibrium technique, Limnol. Oceanogr., 45,
372–380, 2000.
Emerson, S. R. and Hedges, J. I.: Chemical Oceanography and the Marine
Carbon Cycle, Campridge University Press, New York, NY, 2008.
Engel, A., Thoms, S., Riebesell, U., Rochelle-Newall, E., and Zondervan, I.:
Polysaccharide aggregation as a potential sink of marine dissolved organic
carbon, Nature, 428, 929–932, https://doi.org/10.1038/nature02453, 2004.
Fernandes, T., Fernandes, I., Andrade, C. A. P., Ferreira, A., and Cordeiro,
N.: Marine microalgae monosaccharide fluctuations as a stress response to
nutrients inputs, Algal Res., 24, 340–346,
https://doi.org/10.1016/j.algal.2017.04.023, 2017.
Fouilland, E., Tolosa, I., Bonnet, D., Bouvier, C., Bouvier, T., Bouvy, M.,
Got, P., Le Floc'h, E., Mostajir, B., Roques, C., Sempéré, R.,
Sime-Ngando, T., and Vidussi, F.: Bacterial carbon dependence on freshly
produced phytoplankton exudates under different nutrient availability and
grazing pressure conditions in coastal marine waters, FEMS Microbiol. Ecol.,
87, 757–769, https://doi.org/10.1111/1574-6941.12262, 2014.
Fox, B. G., Thorn, R. M. S., Anesio, A. M., and Reynolds, D. M.: The in situ
bacterial production of fluorescent organic matter; an investigation at a
species level, Water Res., 125, 350–359, https://doi.org/10.1016/j.watres.2017.08.040,
2017.
Fukuzaki, K., Imai, I., Fukushima, K., Ishii, K. I., Sawayama, S., and
Yoshioka, T.: Fluorescent characteristics of dissolved organic matter
produced by bloom-forming coastal phytoplankton, J. Plankton Res., 36,
685–694, https://doi.org/10.1093/plankt/fbu015, 2014.
Gargas, E.: A Manual for Phytoplankton Primary Production Studies in the
Baltic, Balt. Mar. Biol., 2, 1–88, 1975.
Gasol, J. M., Pinhassi, J., Alonso-Sáez, L., Ducklow, H., Herndl, G. J.,
Koblízek, M., Labrenz, M., Luo, Y., Morán, X. A. G., Reinthaler, T.,
and Simon, M.: Towards a better understanding of microbial carbon flux in
the sea, Aquat. Microb. Ecol., 53, 21–38, https://doi.org/10.3354/ame01230,
2008.
Goecke, F., Thiel, V., Wiese, J., Labes, A., and Imhoff, J. F.: Algae as an
important environment for bacteria – phylogenetic relationships among new
bacterial species isolated from algae, Phycologia, 52, 14–24,
2013.
Grasshoff, K., Kremling, K., and Ehrhardt, M.: Methods of Seawater Analysis,
3rd Edn., Wiley-VCH, Weinheim, 1999.
Grondin, J. M., Tamura, K., Déjean, G., Abbott, D. W., and Brumer, H.:
Polysaccharide Utilization Loci: Fueling Microbial Communities, J.
Bacteriol., 199, 1–15, 2017.
Grossart, H., Levold, F., Allgaier, M., Simon, M., and Brinkhoff, T.: Marine
diatom species harbour distinct bacterial communities, Environ. Microbiol.,
7, 860–873, https://doi.org/10.1111/j.1462-2920.2005.00759.x, 2005.
Guillemette, F. and del Giorgio, P. A.: Simultaneous consumption and
production of fluorescent dissolved organic matter by lake bacterioplankton,
Environ. Microbiol., 14, 1432–1443,
https://doi.org/10.1111/j.1462-2920.2012.02728.x, 2012.
Hahn, M. W., Lünsdorf, H., Wu, Q., Schauer, M., Höfle, M. G.,
Boenigk, J., and Stadler, P.: Isolation of Novel Ultramicrobacteria
Classified as Actinobacteria from Five Freshwater Habitats in Europe and
Asia, Appl. Environ. Microbiol., 69, 1442–1451,
2003.
Hansell, D. A., Carlson, C. A., Repeta, D. J., and Schlitzer, R.: Dissolved
organic matter in the ocean: a controversy stimulates new insights,
Oceanography, 22, 202–211, 2009.
Haraguchi, L., Asmala, E., Jakobsen, H. H., and Carstensen, J.: Composition
of natural phytoplankton community has minor effects on autochthonous
dissolved organic matter characteristics, Mar. Biol. Res., 15, 357–375,
https://doi.org/10.1080/17451000.2019.1662449, 2019.
Hedges, J. I.: Global biogeochemical cycles: progress and problems, Mar.
Chem., 39, 67–93, 1992.
Helms, J. R., Stubbins, A., Ritchie, J. D., Minor, E. C., Kieber, D. J., and
Mopper, K.: Absorption spectral slopes and slope ratios as indicators of
molecular weight, source, and photobleaching of chromophoric dissolved
organic matter, Limnol. Oceanogr., 53, 955–969,
https://doi.org/10.4319/lo.2009.54.3.1023, 2008.
Herlemann, D. P. R., Labrenz, M., Jürgens, K., Bertilsson, S., Waniek,
J. J., and Andersson, A. F.: Transitions in bacterial communities along the
2000 km salinity gradient of the Baltic Sea, ISME J., 5, 1571–1579,
https://doi.org/10.1038/ismej.2011.41, 2011.
Herlemann, D. P. R., Manecki, M., Dittmar, T., and Jürgens, K.:
Differential responses of marine , mesohaline and oligohaline bacterial
communities to the addition of terrigenous carbon, Environ. Microbiol.,
19, 3098–3117, https://doi.org/10.1111/1462-2920.13784, 2017.
Holmfeldt, K., Dziallas, C., Titelman, J., Pohlmann, K., Grossart, H. P., and
Riemann, L.: Diversity and abundance of freshwater Actinobacteria along
environmental gradients in the brackish northern Baltic Sea, Environ.
Microbiol., 11, 2042–2054, https://doi.org/10.1111/j.1462-2920.2009.01925.x, 2009.
Huguet, A., Vacher, L., Relexans, S., Saubusse, S., Froidefond, J. M., and
Parlanti, E.: Properties of fluorescent dissolved organic matter in the
Gironde Estuary, Org. Geochem., 40, 706–719,
https://doi.org/10.1016/j.orggeochem.2009.03.002, 2009.
Jiao, N., Herndl, G. J., Hansell, D. A., Benner, R., Kattner, G., Wilhelm,
S. W., Kirchman, D. L., Weinbauer, M. G., Luo, T., Chen, F., and Azam, F.:
Microbial production of recalcitrant dissolved organic matter: Long-term
carbon storage in the global ocean, Nat. Rev. Microbiol., 8, 593–599,
https://doi.org/10.1038/nrmicro2386, 2010.
Jørgensen, L., Stedmon, C. A., Kaartokallio, H., Middelboe, M., and
Thomas, D. N.: Changes in the composition and bioavailability of dissolved
organic matter during sea ice formation, Limnol. Oceanogr., 60, 817–830,
https://doi.org/10.1002/lno.10058, 2015.
Kawasaki, N. and Benner, R.: Bacterial release of dissolved organic matter
during cell growth and decline: Molecular origin and composition, Limnol.
Oceanogr., 51, 2170–2180, https://doi.org/10.4319/lo.2006.51.5.2170, 2006.
Kinsey, J. D., Corradino, G., Ziervogel, K., Schnetzer, A., and Osburn, C.
L.: Formation of Chromophoric Dissolved Organic Matter by Bacterial
Degradation of Phytoplankton-Derived Aggregates, Front. Mar. Sci.,
4, 1–16, https://doi.org/10.3389/fmars.2017.00430, 2018.
Klais, R., Tamminen, T., Kremp, A., Spilling, K., and Olli, K.: Decadal-scale
changes of Dinoflagellates and Diatoms in the Anomalous Baltic Sea spring
bloom, PLoS One, 6, e21567, https://doi.org/10.1371/journal.pone.0021567, 2011.
Klindworth, A., Pruesse, E., Schweer, T., Peplies, J., Quast, C., Horn, M.,
and Glöckner, F. O.: Evaluation of general 16S ribosomal RNA gene PCR
primers for classical and next-generation sequencing-based diversity
studies, Nucl. Acid. Res., 41, 1–11, https://doi.org/10.1093/nar/gks808, 2013.
Kremp, A. and Heiskanen, A. S.: Sexuality and cyst formation of the
spring-bloom dinoflagellate Scrippsiella hangoei in the coastal northern
Baltic Sea, Mar. Biol., 134, 771–777, https://doi.org/10.1007/s002270050594, 1999.
Kremp, A., Rengefors, K., and Montresor, M.: Species-specific encystment
patterns in three Baltic cold-water dinoflagellates: The role of multiple
cues in resting cyst formation, Limnol. Oceanogr., 54, 1125–1138,
https://doi.org/10.4319/lo.2009.54.4.1125, 2009.
Krohn-Molt, I., Alawi, M., Förstner, K. U., Wiegandt, A., Burkhardt, L.,
Indenbirken, D., Thieß, M., Grundhoff, A., Kehr, J., Tholey, A., and
Streit, W. R.: Insights into Microalga and bacteria interactions of selected
phycosphere biofilms using metagenomic, transcriptomic, and proteomic
approaches, Front. Microbiol., 8, 1–14, https://doi.org/10.3389/fmicb.2017.01941,
2017.
Kujawinski, E. B.: The Impact of Microbial Metabolism on Marine Dissolved
Organic Matter, Ann. Rev. Mar. Sci., 3, 567–599,
https://doi.org/10.1146/annurev-marine-120308-081003, 2011.
Kujawinski, E. B., Longnecker, K., Barott, K. L., Weber, R. J. M., and Kido
Soule, M. C.: Microbial community structure affects marine dissolved organic
matter composition, Front. Mar. Sci., 3, 1–15,
https://doi.org/10.3389/fmars.2016.00045, 2016.
Kuparinen, J.: Development of bacterioplankton during winter and early
spring at the entrance to the Gulf of Finland, Baltic Sea, Int. Vereinigung
für Theor. und Angew. Limnol. Verhandlungen, 23, 1869–1878, 1988.
Lauro, F. M., Mcdougald, D., Thomas, T., Williams, T. J., Egan, S., Rice,
S., Demaere, M. Z., Ting, L., Ertan, H., Johnson, J., Ferriera, S., Lapidus,
A., Anderson, I., Kyrpides, N., Munk, A. C., Detter, C., Han, C. S., Brown,
M. V, Robb, F. T., Kjelleberg, S., and Cavicchioli, R.: The genomic basis of
trophic strategy in marine bacteria, P. Natl. Acad. Sci. USA, 106,
15527–15533, 2009.
Li, W. K. W., Mclaughlin, F. A., Lovejoy, C., and Carmack, E. C.: Smallest
Algae Thrive As the Arctic Ocean Freshens, Science, 326, p. 539,
https://doi.org/10.1126/science.1179798, 2009.
Mari, X., Passow, U., Migon, C., Burd, A. B., and Legendre, L.: Transparent
exopolymer particles: Effects on carbon cycling in the ocean, Prog.
Oceanogr., 151, 13–37, https://doi.org/10.1016/j.pocean.2016.11.002, 2017.
Martin, M.: Cutadapt removes adapter sequences from high-throughput
sequencing reads, EMBnet Journal, 17, 10–12, 2011.
Massicotte, P.: eemR: Tools for Pre-Processing Emission-Excitation-Matrix
(EEM) Fluorescence Data, R package version 0.1.5.9000 [code], available at:
https://github.com/PMassicotte/eemR (last access: 24 May 2019), 2016.
Mcknight, D. M., Boyer, E. W., Westerhoff, P. K., Doran, P. T., Kulbe, T.,
and Andersen, D. T.: Spectrofluorometric characterization of dissolved
organic matter for indication of precursor organic material and aromaticity, Limnol. Oceanogr., 46, 38–48, 2001.
McMurdie, P. J. and Holmes, S.: phyloseq: An R Package for Reproducible
Interactive Analysis and Graphics of Microbiome Census Data [code], PLoS One, 8,
e61217, https://doi.org/10.1371/journal.pone.0061217, 2013.
Moneta, A., Veuger, B., van Rijswijk, P., Meysman, F., Soetaert, K., and
Middelburg, J. J.: Dissolved inorganic and organic nitrogen uptake in the
coastal North Sea: A seasonal study, Estuar. Coast. Shelf Sci., 147,
78–86, https://doi.org/10.1016/j.ecss.2014.05.022, 2014.
Mönnich, J., Tebben, J., Bergemann, J., Case, R., Wolhlrab, S., and
Harder, T.: Niche-based assembly of bacterial consortia on the diatom
Thalassiosira rotula is stable and reproducible, ISME J., 14, 1614–1625,
https://doi.org/10.1038/s41396-020-0631-5, 2020.
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/nature01281.1., 2002.
Mühlenbruch, M., Grossart, H. P., Eigemann, F., and Voss, M.:
Mini-review: Phytoplankton-derived polysaccharides in the marine environment
and their interactions with heterotrophic bacteria, Environ. Microbiol.,
20, 2671–2685, https://doi.org/10.1111/1462-2920.14302, 2018.
Murphy, K. R., Butler, K. D., Spencer, R. G. M., Stedmon, C. A., Boehme, J.
R., and Aiken, G. R.: Measurement of dissolved organic matter fluorescence in
aquatic environments: An interlaboratory comparison, Environ. Sci. Technol.,
44, 9405–9412, https://doi.org/10.1021/es102362t, 2010.
Nieto-Cid, M., Álvarez-Salgado, X. A., and Pérez, F. F.: Microbial
and photochemical reactivity of fluorescent dissolved organic matter in a
coastal upwelling system, Limnol. Oceanogr., 51, 1391–1400, 2006.
Nimer, N. A., Iglesias-rodriguez, M. D., and Merrett, M. J.: Bicarbonate
utilization by marine phytoplankton species, J. Phycol., 631, 625–631,
1997.
Norland, S.: The Relationship Between Biomass and Volume of Bacteria, in
Handbook of Methods in Aquatic Microbial Ecology, Routledge, 303–306,
1993.
Oksanen, J., Blanchet, F. G., Friendly, M., Kindt, R., Legendre, P.,
McGlinn, D., Minchin, P. R., O'Hara, R. B., Simpson, G. L., Solymos, P.,
Stevens, M. H. H., Szoecs, E., and Wagner, H.: vegan: Community Ecology
Package, R package version 2.5-5 [code], available at:
https://CRAN.R-project.org/package=vegan (last access: 23 April 2020), 2019.
Olenina, I., Hajdu, S., Edler, L., Andersson, A., Wasmund, N., Busch, S.,
Göbel, J., Gromisz, S., Huseby, S., Huttunen, M., Jaanus, A., Kokkonen,
P., Ledaine, I., and Niemkiewicz, E.: Biovolumes and Size-Classes of
Phytoplankton in the Baltic Sea, HELCOM Balt, Sea Environ. Proc., 106, 1–144, 2006.
Orellana, M. V, Pang, W. L., Durand, P. M., Whitehead, K., and Baliga, N. S.:
A Role for Programmed Cell Death in the Microbial Loop, PLoS One, 8,
e62595, https://doi.org/10.1371/journal.pone.0062595, 2013.
Pedler, B. E., Aluwihare, L. I., and Azam, F.: Single bacterial strain
capable of significant contribution to carbon cycling in the surface ocean,
P. Natl. Acad. Sci. USA, 111, 7202–7207, https://doi.org/10.1073/pnas.1401887111,
2014.
Pérez, M. T. and Sommaruga, R.: Differential effect of algal- and
soil-derived dissolved organic matter on alpine lake bacterial community
composition and activity, Limnol. Oceanogr., 51, 2527–2537,
https://doi.org/10.4319/lo.2006.51.6.2527, 2006.
Peters, G.: userfriendlyscience: Quantitative analysis made
accessible, R package version 0.7.2 [code], https://doi.org/10.17605/osf.io/txequ,
2018.
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 [data set], Nucl. Acid. Res.,
41, 590–596, https://doi.org/10.1093/nar/gks1219, 2013.
R Core Team: R: A language and environment for statistical computing, R
Foundation for Statistical Computing [code], Vienna, Austria, available at:
https://www.R-project.org/ (last access: 1 March 2020), 2019.
Riemann, B., Bjørnsen, P. K., Newell, S., and Fallon, R.: Calculation of
cell production of coastal marine bacteria based on measured incorporation
of [3H]thymidine, Limnol. Oceanogr., 32, 471–476,
https://doi.org/10.4319/lo.1987.32.2.0471, 1987.
Riemann, L., Leitet, C., Pommier, T., Simu, K., Holmfeldt, K., Larsson, U.,
and Hagstro, Å.: The Native Bacterioplankton Community in the Central
Baltic Sea Is Influenced by Freshwater Bacterial Species?, Appl. Environ. Microbiol.,
74, 503–515, https://doi.org/10.1128/AEM.01983-07, 2008.
Rintala, J. M., Spilling, K., and Blomster, J.: Temporary cyst enables
long-term dark survival of Scrippsiella hangoei (Dinophyceae), Mar. Biol.,
152, 57–62, https://doi.org/10.1007/s00227-007-0652-x, 2007.
Romera-Castillo, C., Sarmento, H., Álvarez-Salgado, X. A., Gasol, J. M.,
and Marrase, C.: Production of chromophoric dissolved organic matter by
marine phytoplankton, Limnol. Oceanogr., 55, 446–454, 2010.
Romera-Castillo, C., Sarmento, H., Álvarez-Salgado, X. A., Gasol, J. M.,
and Marrase, C.: Net Production and Consumption of Fluorescent Colored
Dissolved Organic Matter by Natural Bacterial Assemblages Growing on Marine
Phytoplankton Exudates, Appl. Environ. Microbiol., 77, 7490–7498,
https://doi.org/10.1128/AEM.00200-11, 2011.
Saad, E. M., Longo, A. F., Chambers, L. R., Huang, R., Benitez-Nelson, C.,
Dyhrman, S. T., Diaz, J. M., Tang, Y., and Ingall, E. D.: Understanding
marine dissolved organic matter production: Compositional insights from
axenic cultures of Thalassiosira pseudonana, Limnol. Oceanogr., 61,
2222–2233, https://doi.org/10.1002/lno.10367, 2016.
Sapp, M., Schwaderer, A. S., Wiltshire, K. H., Hoppe, H.-G., Gerdts, G., and
Wichels, A.: Species-specific bacterial communities in the phycosphere of
microalgae?, Microb. Ecol., 53, 683–699, https://doi.org/10.1007/s00248-006-9162-5,
2007.
Sarmento, H. and Gasol, J. M.: Use of phytoplankton-derived dissolved
organic carbon by different types of bacterioplankton, Environ. Microbiol.,
14, 2348–2360, https://doi.org/10.1111/j.1462-2920.2012.02787.x, 2012.
Sarmento, H., Romera-Castillo, C., Lindh, M., Pinhassi, J., Sala, M. M.,
Gasol, J. M., Marrasé, C., and Taylor, G. T.: Phytoplankton
species-specific release of dissolved free amino acids and their selective
consumption by bacteria, Limnol. Oceanogr., 58, 1123–1135,
https://doi.org/10.4319/lo.2013.58.3.1123, 2013.
Schäfer, H., Abbas, B., Witte, H., and Muyzer, G.: Genetic diversity of
“satellite” bacteria present in cultures of marine diatoms, FEMS
Microbiol. Ecol., 42, 25–35, https://doi.org/10.1016/S0168-6496(02)00298-2, 2002.
Seymour, J. R., Amin, S. A., Raina, J. B., and Stocker, R.: Zooming in on the
phycosphere: The ecological interface for phytoplankton-bacteria
relationships, Nat. Microbiol., 2, 1–12,
https://doi.org/10.1038/nmicrobiol.2017.65, 2017.
Smith, D. C. and Azam, F.: A simple, economical method for measuring
bacterial protein synthesis rates in seawater using 3H-leucine, Mar. Microb.
Food Webs, 6, 107–114, 1992.
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,
https://doi.org/10.3389/fmars.2018.00327, 2018.
Spilling, K., Fuentes-Lema, A., Quemaliños, D., Klais, R., and Sobrino,
C.: Primary production, carbon release, and respiration during spring bloom
in the Baltic Sea, Limnol. Oceanogr., 64, 1779–1789,
https://doi.org/10.1002/lno.11150, 2019.
Stedmon, C. A. and Markager, S.: Tracing the production and degradation of
autochthonous fractions of dissolved organic matter by fluorescence
analysis, Limnol. Oceanogr., 50, 1415–1426, 2005.
Storch, T. A. and Saunders, G. W.: Phytoplankton extracellular release and
its relation to the seasonal cycle of dissolved organic carbon in a
eutrophic lake, Limnol. Oceanogr., 23, 112–119,
https://doi.org/10.4319/lo.1978.23.1.0112, 1978.
Strom, S. L., Benner, R., Ziegler, S., and Dagg, M. J.: Planktonic grazers
are a potentially important source of marine dissolved organic carbon,
Limnol. Oceanogr., 42, 1364–1374, https://doi.org/10.4319/lo.1997.42.6.1364, 1997.
Suikkanen, S., Hakanen, P., Spilling, K., and Kremp, A.: Allelopathic effects
of Baltic Sea spring bloom dinoflagellates on co-occurring phytoplankton,
Mar. Ecol. Prog. Ser., 439, 45–55, https://doi.org/10.3354/meps09356, 2011.
Suksomjit, M., Nagao, S., Ichimi, K., Yamada, T., and Tada, K.: Variation of
dissolved organic matter and fluorescence characteristics before, during and
after phytoplankton bloom, J. Oceanogr., 65, 835–846,
https://doi.org/10.1007/s10872-009-0069-x, 2009.
Tada, Y., Nakaya, R., Goto, S., Yamashita, Y., and Suzuki, K.: Distinct
bacterial community and diversity shifts after phytoplankton-derived
dissolved organic matter addition in a coastal environment, J. Exp. Mar.
Bio. Ecol., 495, 119–128, https://doi.org/10.1016/j.jembe.2017.06.006,
2017.
Taylor, F. J. R. and Pollingher, U.: Ecology of Dinoflagellates, in: Biology
of Dinoflagellates, Blackwell Scientific Publications, Oxford, 1987.
Teeling, H., Fuchs, B. M., Becher, D., Klockow, C., Gardebrecht, A., Bennke,
C. M., Kassabgy, M., Huang, S., Mann, A. J., Waldmann, J., Weber, M.,
Klindworth, A., Otto, A., Lange, J., Bernhardt, J., Reinsch, C., Hecker, M.,
Peplies, J., Bockelmann, F. D., Callies, U., Gerdts, G., Wichels, A.,
Wiltshire, K. H., Glöckner, F. O., Schweder, T., and Amann, R.:
Substrate-controlled succession of marine bacterioplankton populations
induced by a phytoplankton bloom, Science, 336, 608–611,
https://doi.org/10.1126/science.1218344, 2012.
Thornton, D. C. O.: Dissolved organic matter (DOM) release by phytoplankton
in the contemporary and future ocean, Eur. J. Phycol., 49, 20–46,
https://doi.org/10.1080/09670262.2013.875596, 2014.
Urbani, R., Magaletti, E., Sist, P., and Cicero, A. M.: Extracellular
carbohydrates released by the marine diatoms Cylindrotheca closterium,
Thalassiosira pseudonana and Skeletonema costatum: Effect of P-depletion and
growth status, Sci. Total Environ., 353, 300–306,
https://doi.org/10.1016/j.scitotenv.2005.09.026, 2005.
Weishaar, J. L., Aiken, G. R., Bergamaschi, B. A., Fram, M. S., Fujii, R.,
and Mopper, K.: Evaluation of specific ultraviolet absorbance as an
indicator of the chemical composition and reactivity of dissolved organic
carbon, Environ. Sci. Technol., 37, 4702–4708, https://doi.org/10.1021/es030360x, 2003.
Wickham, H.: ggplot2: Elegant Graphics for Data Analysis, Springer-Verlag,
New York, 2016.
Yamashita, Y. and Tanoue, E.: Chemical characteristics of amino
acid-containing dissolved organic matter in seawater, Org. Geochem., 35,
679–692, https://doi.org/10.1016/j.orggeochem.2004.02.007, 2004a.
Yamashita, Y. and Tanoue, E.: In situ production of chromophoric dissolved
organic matter in coastal environments, Geophys. Res. Lett., 31, 1–5,
https://doi.org/10.1029/2004GL019734, 2004b.
Yamashita, Y., Hashihama, F., Saito, H., Fukuda, H., and Ogawa, H.: Factors
controlling the geographical distribution of fluorescent dissolved organic
matter in the surface waters of the Pacific Ocean, Limnol. Oceanogr., 62,
2360–2374, https://doi.org/10.1002/lno.10570, 2017.
Zsolnay, A., Baigar, E., Jimenez, M., Steinweg, B., and Saccomandi, F.:
Differentiating with fluorescence spectroscopy the sources of dissolved
organic matter in soils subjected to drying, Chemosphere, 38, 45–50,
https://doi.org/10.1016/S0045-6535(98)00166-0, 1999.
Short summary
Dissolved organic matter (DOM) is a significant carbon pool in the marine environment. The composition of the DOM pool, as well as its interaction with microbes, is complex, yet understanding it is important for understanding global carbon cycling. This study shows that two phytoplankton species have different effects on the composition of the DOM pool and, through the DOM they produce, on the ensuing microbial community. These communities in turn have different effects on DOM composition.
Dissolved organic matter (DOM) is a significant carbon pool in the marine environment. The...
Altmetrics
Final-revised paper
Preprint