Articles | Volume 18, issue 1
https://doi.org/10.5194/bg-18-251-2021
© 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-18-251-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
14 Jan 2021
Research article |
| 14 Jan 2021
| 14 Jan 2021
Factors controlling the competition between Phaeocystis and diatoms in the Southern Ocean and implications for carbon export fluxes
Institute for Biogeochemistry and Pollutant Dynamics,
ETH Zürich, Universitätstrasse 16, 8092 Zurich, Switzerland
Meike Vogt
Institute for Biogeochemistry and Pollutant Dynamics,
ETH Zürich, Universitätstrasse 16, 8092 Zurich, Switzerland
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The southeastern Weddell Sea is important for global ocean circulation due to the cross-shelf-break exchange of Dense Shelf Water and Warm Deep Water, but their exact circulation pathways remain elusive. Using Lagrangian model experiments in an eddy-permitting ocean model, we show how present circulation pathways and transit times of these water masses on the continental shelf are altered by 21st-century climate change, which has implications for local ice-shelf basal melt rates and ecosystems.
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Y. Yara, M. Vogt, M. Fujii, H. Yamano, C. Hauri, M. Steinacher, N. Gruber, and Y. Yamanaka
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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.
Joost de Vries, Fanny Monteiro, Gerald Langer, Colin Brownlee, and Glen Wheeler
EGUsphere, https://doi.org/10.5194/egusphere-2023-880, https://doi.org/10.5194/egusphere-2023-880, 2023
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Calcifying phytoplankton (coccolithophores) utilize a life cycle in which they can grow and divide in 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.
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.
Federica Maggioni, Mireille Pujo-Pay, Jérome Aucan, Carlo Cerrano, Barbara Calcinai, Claude Payri, Francesca Benzoni, Yves Letourneur, and Riccardo Rodolfo-Metalpa
Biogeosciences, 18, 5117–5140, https://doi.org/10.5194/bg-18-5117-2021, https://doi.org/10.5194/bg-18-5117-2021, 2021
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Based on current experimental evidence, climate change will affect up to 90 % of coral reefs worldwide. The originality of this study arises from our recent discovery of an exceptional study site where environmental conditions (temperature, pH, and oxygen) are even worse than those forecasted for the future.
While these conditions are generally recognized as unfavorable for marine life, we found a rich and abundant coral reef thriving under such extreme environmental conditions.
Nisan Sariaslan and Martin R. Langer
Biogeosciences, 18, 4073–4090, https://doi.org/10.5194/bg-18-4073-2021, https://doi.org/10.5194/bg-18-4073-2021, 2021
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Analyses of foraminiferal assemblages from the Mamanguape mangrove estuary (northern Brazil) revealed highly diverse, species-rich, and structurally complex biotas. The atypical fauna resembles shallow-water offshore assemblages and are interpreted to be the result of highly saline ocean waters penetrating deep into the estuary. The findings contrast with previous studies, have implications for the fossil record, and provide novel perspectives for reconstructing mangrove environments.
Jutta E. Wollenburg, Jelle Bijma, Charlotte Cremer, Ulf Bickmeyer, and Zora Mila Colomba Zittier
Biogeosciences, 18, 3903–3915, https://doi.org/10.5194/bg-18-3903-2021, https://doi.org/10.5194/bg-18-3903-2021, 2021
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Cultured at in situ high-pressure conditions Cibicides and Cibicidoides taxa develop lasting ectoplasmic structures that cannot be retracted or resorbed. An ectoplasmic envelope surrounds their test and may protect the shell, e.g. versus carbonate aggressive bottom water conditions. Ectoplasmic roots likely anchor the specimens in areas of strong bottom water currents, trees enable them to elevate themselves above ground, and twigs stabilize and guide the retractable pseudopodial network.
Kumar Nimit
Biogeosciences, 18, 3631–3635, https://doi.org/10.5194/bg-18-3631-2021, https://doi.org/10.5194/bg-18-3631-2021, 2021
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The Indian Ocean Rim hosts many of the underdeveloped and emerging economies that depend on ocean resources for the livelihood of millions. Operational ocean information services cater to the requirements of resource managers and end-users to efficiently harness resources, mitigate threats and ensure safety. This paper outlines existing tools and explores the ongoing research that has the potential to convert the findings into operational services in the near- to midterm.
Finn Mielck, Rune Michaelis, H. Christian Hass, Sarah Hertel, Caroline Ganal, and Werner Armonies
Biogeosciences, 18, 3565–3577, https://doi.org/10.5194/bg-18-3565-2021, https://doi.org/10.5194/bg-18-3565-2021, 2021
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Marine sand mining is becoming more and more important to nourish fragile coastlines that face global change. We investigated the largest sand extraction site in the German Bight. The study reveals that after more than 35 years of mining, the excavation pits are still detectable on the seafloor while the sediment composition has largely changed. The organic communities living in and on the seafloor were strongly decimated, and no recovery is observable towards previous conditions.
France Van Wambeke, Elvira Pulido, Philippe Catala, Julie Dinasquet, Kahina Djaoudi, Anja Engel, Marc Garel, Sophie Guasco, Barbara Marie, Sandra Nunige, Vincent Taillandier, Birthe Zäncker, and Christian Tamburini
Biogeosciences, 18, 2301–2323, https://doi.org/10.5194/bg-18-2301-2021, https://doi.org/10.5194/bg-18-2301-2021, 2021
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Michaelis–Menten kinetics were determined for alkaline phosphatase, aminopeptidase and β-glucosidase in the Mediterranean Sea. Although the ectoenzymatic-hydrolysis contribution to heterotrophic prokaryotic needs was high in terms of N, it was low in terms of C. This study points out the biases in interpretation of the relative differences in activities among the three tested enzymes in regard to the choice of added concentrations of fluorogenic substrates.
Oscar E. Romero, Simon Ramondenc, and Gerhard Fischer
Biogeosciences, 18, 1873–1891, https://doi.org/10.5194/bg-18-1873-2021, https://doi.org/10.5194/bg-18-1873-2021, 2021
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Upwelling intensity along NW Africa varies on the interannual to decadal timescale. Understanding its changes is key for the prediction of future changes of CO2 sequestration in the northeastern Atlantic. Based on a multiyear (1988–2009) sediment trap experiment at the site CBmeso, fluxes and the species composition of the diatom assemblage are presented. Our data help in establishing the scientific basis for forecasting and modeling future states of this ecosystem and its decadal changes.
Katharine T. Bigham, Ashley A. Rowden, Daniel Leduc, and David A. Bowden
Biogeosciences, 18, 1893–1908, https://doi.org/10.5194/bg-18-1893-2021, https://doi.org/10.5194/bg-18-1893-2021, 2021
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Turbidity flows – underwater avalanches – are large-scale physical disturbances believed to have profound impacts on productivity and diversity of benthic communities in the deep sea. We reviewed published studies and found that current evidence for changes in productivity is ambiguous at best, but the influence on regional and local diversity is clearer. We suggest study design criteria that may lead to a better understanding of large-scale disturbance effects on deep-sea benthos.
Phillip Williamson, Hans-Otto Pörtner, Steve Widdicombe, and Jean-Pierre Gattuso
Biogeosciences, 18, 1787–1792, https://doi.org/10.5194/bg-18-1787-2021, https://doi.org/10.5194/bg-18-1787-2021, 2021
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The reliability of ocean acidification research was challenged in early 2020 when a high-profile paper failed to corroborate previously observed impacts of high CO2 on the behaviour of coral reef fish. We now know the reason why: the
replicatedstudies differed in many ways. Open-minded and collaborative assessment of all research results, both negative and positive, remains the best way to develop process-based understanding of the impacts of ocean acidification on marine organisms.
Michael Lintner, Bianca Lintner, Wolfgang Wanek, Nina Keul, and Petra Heinz
Biogeosciences, 18, 1395–1406, https://doi.org/10.5194/bg-18-1395-2021, https://doi.org/10.5194/bg-18-1395-2021, 2021
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Foraminifera are unicellular marine organisms that play an important role in the marine element cycle. Changes of environmental parameters such as salinity or temperature have a significant impact on the faunal assemblages. Our experiments show that changes in salinity immediately influence the foraminiferal activity. Also the light regime has a significant impact on carbon or nitrogen processing in foraminifera which contain no kleptoplasts.
Michele Casini, Martin Hansson, Alessandro Orio, and Karin Limburg
Biogeosciences, 18, 1321–1331, https://doi.org/10.5194/bg-18-1321-2021, https://doi.org/10.5194/bg-18-1321-2021, 2021
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In the past 20 years the condition of the eastern Baltic cod has dropped, with large implications for the fishery. Our results show that simultaneously the cod population has moved deeper while low-oxygenated waters detrimental for cod growth have become shallower. Cod have thus dwelled more in detrimental waters, explaining the drop in its condition. This study, using long-term fish and hydrological monitoring data, evidences the impact of deoxygenation on fish biology and fishing.
Elizabeth D. LaBone, Kenneth A. Rose, Dubravko Justic, Haosheng Huang, and Lixia Wang
Biogeosciences, 18, 487–507, https://doi.org/10.5194/bg-18-487-2021, https://doi.org/10.5194/bg-18-487-2021, 2021
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The hypoxic zone is an area of low dissolved oxygen (DO) in the Gulf of Mexico. Fish can be killed by exposure to hypoxia and can be negatively impacted by exposure to low, nonlethal DO concentrations (sublethal DO). We found that high sublethal area resulted in higher exposure and DO variability had a small effect on exposure. There was a large variation in exposure among individuals, which when combined with spatial variability of DO, can result in an underestimation of exposure when averaged.
Svenja Reents, Peter Mueller, Hao Tang, Kai Jensen, and Stefanie Nolte
Biogeosciences, 18, 403–411, https://doi.org/10.5194/bg-18-403-2021, https://doi.org/10.5194/bg-18-403-2021, 2021
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By conducting a flooding experiment with two genotypes of the salt-marsh grass Elymus athericus, we show considerable differences in biomass response to flooding within the same species. As biomass production plays a major role in sedimentation processes and thereby salt-marsh accretion, we emphasise the importance of taking intraspecific differences into account when evaluating ecosystem resilience to accelerated sea level rise.
Jiangtao Li, Lingyuan Gu, Shijie Bai, Jie Wang, Lei Su, Bingbing Wei, Li Zhang, and Jiasong Fang
Biogeosciences, 18, 113–133, https://doi.org/10.5194/bg-18-113-2021, https://doi.org/10.5194/bg-18-113-2021, 2021
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Few studies have focused on the particle-attached (PA) and free-living (FL) microbes of the deep ocean. Here we determined PA and FL microbial communities along depth profiles of the SCS. PA and FL fractions accommodated divergent microbial compositions, and most of them are potentially generalists with PA and FL dual lifestyles. A potential vertical connectivity between surface-specific microbes and those in the deep ocean was indicated, likely through microbial attachment to sinking particles.
Saskia Brix, Karen J. Osborn, Stefanie Kaiser, Sarit B. Truskey, Sarah M. Schnurr, Nils Brenke, Marina Malyutina, and Pedro Martinez Arbizu
Biogeosciences, 17, 6163–6184, https://doi.org/10.5194/bg-17-6163-2020, https://doi.org/10.5194/bg-17-6163-2020, 2020
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The Clarion–Clipperton Fracture Zone (CCZ) located in the Pacific is commercially the most important area of proposed manganese nodule mining. Extraction of this will influence the life and distribution of small deep-sea invertebrates like peracarid crustaceans, of which >90 % are undescribed species new to science. We are doing a species delimitation approach as baseline for an ecological interpretation of species distribution and discuss the results in light of future deep-sea conservation.
Amal Jayakumar and Bess B. Ward
Biogeosciences, 17, 5953–5966, https://doi.org/10.5194/bg-17-5953-2020, https://doi.org/10.5194/bg-17-5953-2020, 2020
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Diversity and community composition of nitrogen-fixing microbes in the three main oxygen minimum zones of the world ocean were investigated using nifH clone libraries. Representatives of three main clusters of nifH genes were detected. Sequences were most diverse in the surface waters. The most abundant OTUs were affiliated with Alpha- and Gammaproteobacteria. The sequences were biogeographically distinct and the dominance of a few OTUs was commonly observed in OMZs in this (and other) studies.
Guillermo Feliú, Marc Pagano, Pamela Hidalgo, and François Carlotti
Biogeosciences, 17, 5417–5441, https://doi.org/10.5194/bg-17-5417-2020, https://doi.org/10.5194/bg-17-5417-2020, 2020
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The impact of Saharan dust deposition events on the Mediterranean Sea ecosystem was studied during a basin-scale survey (PEACETIME cruise, May–June 2017). Short-term responses of the zooplankton community were observed after episodic dust deposition events, highlighting the impact of these events on productivity up to the zooplankton level in the poorly fertilized pelagic ecosystems of the southern Mediterranean Sea.
Douglas Lessa, Raphaël Morard, Lukas Jonkers, Igor M. Venancio, Runa Reuter, Adrian Baumeister, Ana Luiza Albuquerque, and Michal Kucera
Biogeosciences, 17, 4313–4342, https://doi.org/10.5194/bg-17-4313-2020, https://doi.org/10.5194/bg-17-4313-2020, 2020
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We observed that living planktonic foraminifera had distinct vertically distributed communities across the Subtropical South Atlantic. In addition, a hierarchic alternation of environmental parameters was measured to control the distribution of planktonic foraminifer's species depending on the water depth. This implies that not only temperature but also productivity and subsurface processes are signed in fossil assemblages, which could be used to perform paleoceanographic reconstructions.
Cited articles
Accornero, A., Manno, C., Esposito, F., and Gambi, M. C.: The vertical flux of
particulate matter in the polynya of Terra Nova Bay. Part II. Biological
components, Antarct. Sci., 15, S0954102003001214,
https://doi.org/10.1017/S0954102003001214, 2003. a, b
Alvain, S., Moulin, C., Dandonneau, Y., and Loisel, H.: Seasonal distribution
and succession of dominant phytoplankton groups in the global ocean: A
satellite view, Global Biogeochem. Cy., 22, GB3001,
https://doi.org/10.1029/2007GB003154, 2008. a, b, c, d
Anderson, L. A. and Sarmiento, J. L.: Redfield ratios of remineralization
determined by nutrient data analysis, Global Biogeochem. Cy., 8,
65–80, https://doi.org/10.1029/93GB03318, 1994. a
Arrigo, K. R., Weiss, A. M., and Smith, W. O.: Physical forcing of
phytoplankton dynamics in the southwestern Ross Sea, J. Geophys. Res.-Oceans, 103, 1007–1021, https://doi.org/10.1029/97JC02326, 1998. a
Arrigo, K. R., Robinson, D. H., Worthen, D. L., Dunbar, R. B., DiTullio, G. R.,
VanWoert, M. L., and Lizotte, M. P.: Phytoplankton community structure and
the drawdown of nutrients and CO2 in the Southern Ocean, Science, 283,
365–367, https://doi.org/10.1126/science.283.5400.365, 1999. a, b, c, d, e, f
Arrigo, K. R., DiTullio, G. R., Dunbar, R. B., Robinson, D. H., VanWoert, M.,
Worthen, D. L., and Lizotte, M. P.: Phytoplankton taxonomic variability in
nutrient utilization and primary production in the Ross Sea, J. Geophys. Res.-Oceans, 105, 8827–8846, https://doi.org/10.1029/1998JC000289,
2000. a
Arrigo, K. R., van Dijken, G. L., Alderkamp, A.-C., Erickson, Z. K., Lewis, K. M., Lowry, K. E., Joy Warren, H. L., Middag, R., Nash Arrigo, J. E.,
Selz, V., and van de Poll, W.: Early Spring Phytoplankton Dynamics in the
Western Antarctic Peninsula, J. Geophys. Res.-Oceans, 122,
9350–9369, https://doi.org/10.1002/2017JC013281, 2017. a, b
Asper, V. L. and Smith, W. O.: Particle fluxes during austral spring and
summer in the southern Ross Sea, Antarctica, J. Geophys. Res.-Oceans 104, 5345–5359, https://doi.org/10.1029/1998JC900067, 1999. a, b, c, d
Asper, V. L. and Smith, W. O.: Variations in the abundance and distribution of
aggregates in the Ross Sea, Antarctica, Elem. Sci. Anth., 7, 23,
https://doi.org/10.1525/elementa.355,
2019. a, b, c
Ayers, G. P., Ivey, J. P., and Gillett, R. W.: Coherence between seasonal
cycles of dimethyl sulphide, methanesulphonate and sulphate in marine air,
Nature, 349, 404–406, https://doi.org/10.1038/349404a0, 1991. a
Balch, W. M., Drapeau, D. T., Bowler, B. C., Lyczskowski, E., Booth, E. S., and
Alley, D.: The contribution of coccolithophores to the optical and inorganic
carbon budgets during the Southern Ocean Gas Exchange Experiment: New
evidence in support of the ”Great Calcite Belt” hypothesis, J. Geophys. Res., 116, C00F06, https://doi.org/10.1029/2011JC006941, 2011. a
Balch, W. M., Bates, N. R., Lam, P. J., Twining, B. S., Rosengard, S. Z.,
Bowler, B. C., Drapeau, D. T., Garley, R., Lubelczyk, L. C., Mitchell, C.,
and Rauschenberg, S.: Factors regulating the Great Calcite Belt in the
Southern Ocean and its biogeochemical significance, Global Biogeochem. Cy., 30, 1199–1214, https://doi.org/10.1002/2016GB005414, 2016. a, b, c, d, e
Behrenfeld, M. J.: Climate-mediated dance of the plankton, Nat. Clim. Change, 4, 880–887, https://doi.org/10.1038/nclimate2349, 2014. a
Behrenfeld, M. J. and Falkowski, P. G.: Photosynthetic rates derived from
satellite-based chlorophyll concentration, Limnol. Oceanogr., 42,
1–20, https://doi.org/10.4319/lo.1997.42.1.0001, 1997. a, b
Ben Mustapha, Z. B., Alvain, S., Jamet, C., Loisel, H., and Dessailly, D.: Automatic classification of water-leaving radiance anomalies from global
SeaWiFS imagery: Application to the detection of phytoplankton groups in open
ocean waters, Remote Sens. Environ., 146, 97–112,
https://doi.org/10.1016/j.rse.2013.08.046, 2014. a
Bender, S. J., Moran, D. M., McIlvin, M. R., Zheng, H., McCrow, J. P., Badger, J., DiTullio, G. R., Allen, A. E., and Saito, M. A.: Colony formation in Phaeocystis antarctica: connecting molecular mechanisms with iron biogeochemistry, Biogeosciences, 15, 4923–4942, https://doi.org/10.5194/bg-15-4923-2018, 2018. a, b
Berman-Frank, I., Cullen, J. T., Shaked, Y., Sherrell, R. M., and Falkowski, P. G.: Iron availability, cellular iron quotas, and nitrogen fixation in
Trichodesmium, Limnol. Oceanogr., 46, 1249–1260,
https://doi.org/10.4319/lo.2001.46.6.1249, 2001. a
Bopp, L., Aumont, O., Cadule, P., Alvain, S., and Gehlen, M.: Response of
diatoms distribution to global warming and potential implications: A global
model study, Geophys. Res. Lett., 32, 1–4,
https://doi.org/10.1029/2005GL023653, 2005. a
Boyd, P. W.: Physiology and iron modulate diverse responses of diatoms to a
warming Southern Ocean, Nat. Clim. Change, 9, 148–152,
https://doi.org/10.1038/s41558-018-0389-1, 2019. a
Buesseler, K. O.: The decoupling of production and particulate export in the
surface ocean, Global Biogeochem. Cy., 12, 297–310,
https://doi.org/10.1029/97GB03366, 1998. a, b
Buitenhuis, E. T. and Geider, R. J.: A model of phytoplankton acclimation to
iron-light colimitation, Limnol. Oceanogr., 55, 714–724,
https://doi.org/10.4319/lo.2009.55.2.0714, 2010. a
Buitenhuis, E. T., Pangerc, T., Franklin, D. J., Le Quéré, C.,
and Malin, G.: Growth rates of six coccolithophorid strains as a function of
temperature, Limnol. Oceanogr., 53, 1181–1185,
https://doi.org/10.4319/lo.2008.53.3.1181, 2008. a
Buitenhuis, E. T., Hashioka, T., and Le Quéré, C.: Combined
constraints on global ocean primary production using observations and
models, Global Biogeochem. Cy., 27, 847–858, https://doi.org/10.1002/gbc.20074,
2013. a, b, c, d
Buma, A. G. J., Bano, N., Veldhuis, M. J. W., and Kraay, G. W.: Comparison of
the pigmentation of two strains of the prymnesiophyte Phaeocystis
sp., Neth. J. Sea Res., 27, 173–182,
https://doi.org/10.1016/0077-7579(91)90010-X, 1991. a
Capone, D. G.: Trichodesmium, a Globally Significant Marine Cyanobacterium,
Science, 276, 1221–1229, https://doi.org/10.1126/science.276.5316.1221, 1997. a
Caron, D. A., Dennett, M. R., Lonsdale, D. J., Moran, D. M., and Shalapyonok, L.: Microzooplankton herbivory in the Ross Sea, Antarctica, Deep-Sea Res. Pt. II, 47, 3249–3272,
https://doi.org/10.1016/S0967-0645(00)00067-9, 2000. a, b
Carton, J. A. and Giese, B. S.: A reanalysis of ocean climate using Simple
Ocean Data Assimilation (SODA), Mon. Weather Rev., 136, 2999–3017,
https://doi.org/10.1175/2007MWR1978.1, 2008. a
Chen, Y.-Q., Wang, N., Zhang, P., Zhou, H., and Qu, L.-H.: Molecular evidence
identifies bloom-forming Phaeocystis (Prymnesiophyta) from coastal
waters of southeast China as Phaeocystis globosa, Biochem. Syst. Ecol., 30, 15–22, https://doi.org/10.1016/S0305-1978(01)00054-0,
2002. a
Constable, A. J., Melbourne-Thomas, J., Corney, S. P., Arrigo, K. R., Barbraud, C., Barnes, D. K. A., Bindoff, N. L., Boyd, P. W., Brandt, A., Costa, D. P.,
Davidson, A. T., Ducklow, H. W., Emmerson, L., Fukuchi, M., Gutt, J.,
Hindell, M. A., Hofmann, E. E., Hosie, G. W., Iida, T., Jacob, S., Johnston, N. M., Kawaguchi, S., Kokubun, N., Koubbi, P., Lea, M.-A., Makhado, A.,
Massom, R. A., Meiners, K., Meredith, M. P., Murphy, E. J., Nicol, S., Reid, K., Richerson, K., Riddle, M. J., Rintoul, S. R., Smith, W. O., Southwell, C., Stark, J. S., Sumner, M., Swadling, K. M., Takahashi, K. T., Trathan, P. N., Welsford, D. C., Weimerskirch, H., Westwood, K. J., Wienecke, B. C.,
Wolf-Gladrow, D., Wright, S. W., Xavier, J. C., and Ziegler, P.: Climate
change and Southern Ocean ecosystems I: how changes in physical habitats
directly affect marine biota, Glob. Change Biol., 20, 3004–3025,
https://doi.org/10.1111/gcb.12623, 2014. a, b
Cubillos, J. C., Wright, S. W., Nash, G., de Salas, M. F., Griffiths, B.,
Tilbrook, B., Poisson, A., and Hallegraeff, G. M.: Calcification morphotypes
of the coccolithophorid Emiliania huxleyi in the Southern Ocean:
changes in 2001 to 2006 compared to historical data, Mar. Ecol. Prog. Ser., 348, 47–54, https://doi.org/10.3354/meps07058, 2007. a
Curran, M. A. J. and Jones, G. B.: Dimethyl sulfide in the Southern Ocean:
Seasonality and flux, J. Geophys. Res.-Atmos., 105,
20451–20459, https://doi.org/10.1029/2000JD900176, 2000. a, b
Curran, M. A. J., Jones, G. B., and Burton, H.: Spatial distribution of
dimethylsulfide and dimethylsulfoniopropionate in the Australasian sector of
the Southern Ocean, J. Geophys. Res.-Atmos., 103,
16677–16689, https://doi.org/10.1029/97JD03453, 1998. a
Dee, D. P., Uppala, S. M., Simmons, A. J., Berrisford, P., Poli, P., Kobayashi, S., Andrae, U., Balmaseda, M. A., Balsamo, G., Bauer, P., Bechtold, P.,
Beljaars, A. C. M., van de Berg, L., Bidlot, J., Bormann, N., Delsol, C.,
Dragani, R., Fuentes, M., Geer, A. J., Haimberger, L., Healy, S. B.,
Hersbach, H., Hólm, E. V., Isaksen, L., Kållberg, P., Köhler, M., Matricardi, M., McNally, A. P., Monge-Sanz, B. M., Morcrette, J.-J.,
Park, B.-K., Peubey, C., de Rosnay, P., Tavolato, C., Thépaut, J.-N.,
and Vitart, F.: The ERA-Interim reanalysis: configuration and performance of
the data assimilation system, Q. J. Roy. Meteor. Soc., 137, 553–597, https://doi.org/10.1002/qj.828, 2011. a
Deppeler, S. L. and Davidson, A. T.: Southern Ocean phytoplankton in a
changing climate, Front. Mar. Sci., 4, 40,
https://doi.org/10.3389/fmars.2017.00040, 2017. a
DeVries, T. and Weber, T.: The export and fate of organic matter in the ocean:
New constraints from combining satellite and oceanographic tracer
observations, Global Biogeochem. Cy., 31, 535–555,
https://doi.org/10.1002/2016GB005551, 2017. a, b
DiTullio, G. R., Grebmeier, J. M., Arrigo, K. R., Lizotte, M. P., Robinson, D. H., Leventer, A., Barry, J. P., VanWoert, M. L., and Dunbar, R. B.: Rapid
and early export of Phaeocystis antarctica blooms in the Ross Sea,
Antarctica, Nature, 404, 595–598, https://doi.org/10.1038/35007061, 2000. a, b, c
Ducklow, H. W., Wilson, S. E., Post, A. F., Stammerjohn, S. E., Erickson, M.,
Lee, S., Lowry, K. E., Sherrell, R. M., and Yager, P. L.: Particle flux on
the continental shelf in the Amundsen Sea Polynya and Western Antarctic
Peninsula, Elem. Sci. Anth., 3, 000046,
https://doi.org/10.12952/journal.elementa.000046, 2015. a, b, c
Eppley, R. W.: Temperature and phytoplankton growth in the sea, Fish. B.-NOAA, 70, 1063–1085, 1972. a
Fanton d'Andon, O., Mangin, A., Lavender, S., Antoine, D., Maritorena, S.,
Morel, A., Barrot, G., Demaria, J., and Pinnock, S.: GlobColour – the
European Service for Ocean Colour, in: Proceedings of the 2009 IEEE
International Geoscience and Remote Sensing Symposium, IEEE International
Geoscience and Remote Sensing Symposium (IGARSS), 12–17 July 2009,
Cape Town, South Africa, ISBN 9781424433957, 2009. a, b, c
Feng, Y., Hare, C. E., Rose, J. M., Handy, S. M., DiTullio, G. R., Lee, P. A.,
Smith, W. O., Peloquin, J., Tozzi, S., Sun, J., Zhang, Y., Dunbar, R. B.,
Long, M. C., Sohst, B., Lohan, M., and Hutchins, D. A.: Interactive effects
of iron, irradiance and CO2 on Ross Sea phytoplankton, Deep-Sea Res. Pt. I, 57, 368–383,
https://doi.org/10.1016/j.dsr.2009.10.013, 2010. a, b
Follows, M. J., Dutkiewicz, S., Grant, S., and Chisholm, S. W.: Emergent
biogeography of microbial communities in a model ocean, Science, 315,
1843–1846, https://doi.org/10.1126/science.1138544, 2007. a
Freeman, N. M., Lovenduski, N. S., Munro, D. R., Krumhardt, K. M., Lindsay, K.,
Long, M. C., and Maclennan, M.: The variable and changing Southern Ocean
silicate front: Insights from the CESM large ensemble, Global Biogeochem. Cy., 32, 752–768, https://doi.org/10.1029/2017GB005816, 2018. a
Garcia, H. E., Locarnini, R. A., Boyer, T. P., Antonov, J. I., Baranova, O.,
Zweng, M., Reagan, J., and Johnson, D.: World Ocean Atlas 2013, Volume 3:
Dissolved oxygen, apparent oxygen utilization, and oxygen saturation, Silver Spring, MD, NOAA
Atlas NESDIS 75, 3, 27 pp., 2014a. a
Geider, R. J., MacIntyre, H. L., and Kana, T. M.: A dynamic regulatory model
of phytoplanktonic acclimation to light, nutrients, and temperature,
Limnol. Oceanogr., 43, 679–694, https://doi.org/10.4319/lo.1998.43.4.0679,
1998. a, b
Goffart, A., Catalano, G., and Hecq, J.: Factors controlling the distribution
of diatoms and Phaeocystis in the Ross Sea, J. Marine Syst., 27, 161–175, https://doi.org/10.1016/S0924-7963(00)00065-8, 2000. a
Gowing, M. M., Garrison, D. L., Kunze, H. B., and Winchell, C. J.: Biological
components of Ross Sea short-term particle fluxes in the austral summer of
1995–1996, Deep-Sea Res. Pt. I, 48,
2645–2671, https://doi.org/10.1016/S0967-0637(01)00034-6, 2001. a, b
Granéli, E., Granéli, W., Rabbani, M. M., Daugbjerg, N., Fransz, G., Roudy, J. C., and Alder, V. A.: The influence of copepod and krill
grazing on the species composition of phytoplankton communities from the
Scotia Weddell sea, Polar Biol., 13, 201–213, https://doi.org/10.1007/BF00238930,
1993. a, b, c, d, e
Gravalosa, J. M., Flores, J.-A., Sierro, F. J., and Gersonde, R.: Sea surface
distribution of coccolithophores in the eastern Pacific sector of the
Southern Ocean (Bellingshausen and Amundsen Seas) during the late austral
summer of 2001, Mar. Micropaleontol., 69, 16–25,
https://doi.org/10.1016/j.marmicro.2007.11.006, 2008. a
Green, S. E. and Sambrotto, R. N.: Plankton community structure and export of
C, N, P and Si in the Antarctic Circumpolar Current, Deep-Sea Res. Pt. II, 53, 620–643,
https://doi.org/10.1016/j.dsr2.2006.01.022, 2006. a
Guidi, L., Chaffron, S., Bittner, L., Eveillard, D., Larhlimi, A., Roux, S.,
Darzi, Y., Audic, S., Berline, L., Brum, J. R., Coelho, L. P., Espinoza, J. C. I., Malviya, S., Sunagawa, S., Dimier, C., Kandels-Lewis, S., Picheral, M., Poulain, J., Searson, S., Stemmann, L., Not, F., Hingamp, P., Speich, S.,
Follows, M., Karp-Boss, L., Boss, E., Ogata, H., Pesant, S., Weissenbach, J.,
Wincker, P., Acinas, S. G., Bork, P., de Vargas, C., Iudicone, D.,
Sullivan, M. B., Raes, J., Karsenti, E., Bowler, C., and Gorsky, G.: Plankton networks driving carbon export in the oligotrophic ocean, Nature,
532, 465–470, https://doi.org/10.1038/nature16942, 2016. a
Hamm, C. E., Simson, D. A., Merkel, R., and Smetacek, V.: Colonies of
Phaeocystis globosa are protected by a thin but tough skin, Mar. Ecol. Prog. Ser., 187, 101–111, https://doi.org/10.3354/meps187101, 1999. a
Hancock, A. M., Davidson, A. T., McKinlay, J., McMinn, A., Schulz, K. G., and van den Enden, R. L.: Ocean acidification changes the structure of an Antarctic coastal protistan community, Biogeosciences, 15, 2393–2410, https://doi.org/10.5194/bg-15-2393-2018, 2018. a
Hashioka, T., Vogt, M., Yamanaka, Y., Le Quéré, C., Buitenhuis, E. T., Aita,
M. N., Alvain, S., Bopp, L., Hirata, T., Lima, I., Sailley, S., and Doney,
S. C.: Phytoplankton competition during the spring bloom in four plankton
functional type models, Biogeosciences, 10, 6833–6850,
https://doi.org/10.5194/bg-10-6833-2013, 2013. a, b
Haumann, F. A.: Southern Ocean response to recent changes in surface
freshwater fluxes, PhD Thesis, ETH Zürich,
https://doi.org/10.3929/ethz-b-000166276, 2016. a
Henson, S. A., Le Moigne, F., and Giering, S.: Drivers of Carbon Export
Efficiency in the Global Ocean, Global Biogeochem. Cy., 33, 891–903,
https://doi.org/10.1029/2018GB006158, 2019. a
Holling, C. S.: The components of predation as revealed by a study of
small-mammal predation of the European pine sawfly, Can. Entomol., 91, 293–320, https://doi.org/10.4039/Ent91293-5, 1959. a, b
IPCC: 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, https://doi.org/10.1017/CBO9781107415324, 2014. a, b
Johnson, R., Strutton, P. G., Wright, S. W., McMinn, A., and Meiners, K. M.: Three improved satellite chlorophyll algorithms for the Southern Ocean,
J. Geophys. Res.-Oceans, 118, 3694–3703,
https://doi.org/10.1002/jgrc.20270, 2013. a, b, c, d
Kaufman, D. E., Friedrichs, M. A. M., Smith, W. O., Hofmann, E. E., Dinniman, M. S., and Hemmings, J. C. P.: Climate change impacts on southern Ross Sea
phytoplankton composition, productivity, and export, J. Geophys. Res.-Oceans, 122, 2339–2359, https://doi.org/10.1002/2016JC012514, 2017. a, b, c, d, e
Keller, M. D., Bellows, W. K., and Guillard, R. R. L.: Dimethyl sulfide
production in marine phytoplankton, in: Biogenic Sulfur in the Environment,
edited by: Saltzman, E. S. and Cooper, W. J., vol. 393 of ACS Symposium Series, pp. 167–182, American Chemical Society, Washington, D.C.,
https://doi.org/10.1021/bk-1989-0393, ISBN 0-8412-1612-6, 1989. a, b
Lam, P. J. and Bishop, J. K. B.: High biomass, low export regimes in the
Southern Ocean, Deep-Sea Res. Pt. II,
54, 601–638, https://doi.org/10.1016/j.dsr2.2007.01.013, 2007. a
Lana, A., Bell, T. G., Simó, R., Vallina, S. M., Ballabrera-Poy, J.,
Kettle, A. J., Dachs, J., Bopp, L., Saltzman, E. S., Stefels, J., Johnson, J. E., and Liss, P. S.: An updated climatology of surface dimethlysulfide
concentrations and emission fluxes in the global ocean, Global Biogeochem. Cy., 25, 1–17, https://doi.org/10.1029/2010GB003850, 2011. a, b, c
Laufkötter, C., Vogt, M., Gruber, N., Aumont, O., Bopp, L., Doney, S. C., Dunne, J. P., Hauck, J., John, J. G., Lima, I. D., Seferian, R., and Völker, C.: Projected decreases in future marine export production: the role of the carbon flux through the upper ocean ecosystem, Biogeosciences, 13, 4023–4047, https://doi.org/10.5194/bg-13-4023-2016, 2016. a, b, c, d, e
Lauvset, S. K., Key, R. M., Olsen, A., van Heuven, S., Velo, A., Lin, X., Schirnick, C., Kozyr, A., Tanhua, T., Hoppema, M., Jutterström, S., Steinfeldt, R., Jeansson, E., Ishii, M., Perez, F. F., Suzuki, T., and Watelet, S.: A new global interior ocean mapped climatology: the
Le Quéré, C., Buitenhuis, E. T., Moriarty, R., Alvain, S., Aumont, O., Bopp, L., Chollet, S., Enright, C., Franklin, D. J., Geider, R. J., Harrison, S. P., Hirst, A. G., Larsen, S., Legendre, L., Platt, T., Prentice, I. C., Rivkin, R. B., Sailley, S., Sathyendranath, S., Stephens, N., Vogt, M., and Vallina, S. M.: Role of zooplankton dynamics for Southern Ocean phytoplankton biomass and global biogeochemical cycles, Biogeosciences, 13, 4111–4133, https://doi.org/10.5194/bg-13-4111-2016, 2016. a, b, c, d, e, f, g, h, i, j
Leblanc, K., Arístegui, J., Armand, L., Assmy, P., Beker, B., Bode, A., Breton, E., Cornet, V., Gibson, J., Gosselin, M.-P., Kopczynska, E., Marshall, H., Peloquin, J., Piontkovski, S., Poulton, A. J., Quéguiner, B., Schiebel, R., Shipe, R., Stefels, J., van Leeuwe, M. A., Varela, M., Widdicombe, C., and Yallop, M.: A global diatom database abundance, biovolume and biomass in the world ocean, Earth Syst. Sci. Data, 4, 149–165, https://doi.org/10.5194/essd-4-149-2012, 2012. a, b, c, d
Lee, S. H., Hwang, J., Ducklow, H. W., Hahm, D., Lee, S. H., Kim, D., Hyun, J.-H., Park, J., Ha, H. K., Kim, T.-W., Yang, E. J., and Shin, H. C.: Evidence of minimal carbon sequestration in the productive Amundsen Sea
polynya, Geophys. Res. Lett., 44, 7892–7899,
https://doi.org/10.1002/2017GL074646, 2017. a
Lima, I. D., Lam, P. J., and Doney, S. C.: Dynamics of particulate organic carbon flux in a global ocean model, Biogeosciences, 11, 1177–1198, https://doi.org/10.5194/bg-11-1177-2014, 2014. a
Liss, P. S., Malin, G., Turner, S. M., and Holligan, P. M.: Dimethyl sulphide
and Phaeocystis: A review, J. Marine Syst., 5, 41–53,
https://doi.org/10.1016/0924-7963(94)90015-9, 1994. a
Maritorena, S., Fanton D'Andon, O., Mangin, A., and Siegel, D. A.: Merged
satellite ocean color data products using a bio-optical model:
Characteristics, benefits and issues, Remote Sens. Environ., 114,
1791–1804, https://doi.org/10.1016/j.rse.2010.04.002, 2010. a, b, c
Martin, J. H., Fitzwater, S. E., and Gordon, R. M.: Iron deficiency limits
phytoplankton growth in Antarctic waters, Global Biogeochem. Cy., 4,
5–12, https://doi.org/10.1029/GB004i001p00005, 1990a. a
Martin, J. H., Gordon, R. M., and Fitzwater, S. E.: Iron in Antarctic waters,
Nature, 345, 156–158, https://doi.org/10.1038/345156a0, 1990b. a
Martínez-García, A., Sigman, D. M., Ren, H., Anderson, R. F.,
Straub, M., Hodell, D. a., Jaccard, S. L., Eglinton, T. I., and Haug, G. H.: Iron fertilization of the Subantarctic ocean during the last ice age,
Science, 343, 1347–1350, https://doi.org/10.1126/science.1246848, 2014. a
Mills, M. M., Kropuenske, L. R., van Dijken, G. L., Alderkamp, A.-C., Berg, G. M., Robinson, D. H., Welschmeyer, N. A., and Arrigo, K. R.:
Photophysiology in two Southern Ocean phytoplankton taxa: photosynthesis of
Phaeocystis Antarctica (Prymnesiophyceae) and
Fragilariopsis cylindrus (Bacillariophyceae) under simulated
mixed-layer irradiance, J. Phycol., 46, 1114–1127,
https://doi.org/10.1111/j.1529-8817.2010.00923.x, 2010. a, b
Moisan, T. A. and Mitchell, B. G.: Modeling Net Growth of Phaeocystis antarctica Based on Physiological and Optical Responses to Light and
Temperature Co-limitation, Front. Mar. Sci., 4, 1–15,
https://doi.org/10.3389/fmars.2017.00437, 2018. a, b
Moore, J. K., Doney, S. C., Kleypas, J. A., Glover, D. M., and Fung, I. Y.: An
intermediate complexity marine ecosystem model for the global domain,
Deep-Sea Res. Pt. II, 49, 403–462, https://doi.org/10.1016/S0967-0645(01)00108-4,
2002. a
Moore, J. K., Lindsay, K., Doney, S. C., Long, M. C., and Misumi, K.: Marine
ecosystem dynamics and biogeochemical cycling in the Community Earth System
Model [CESM1(BGC)]: Comparison of the 1990s with the 2090s under the RCP4.5
and RCP8.5 scenarios, J. Climate, 26, 9291–9312,
https://doi.org/10.1175/JCLI-D-12-00566.1, 2013. a, b
Morel, A. and Berthon, J.-F.: Surface pigments, algal biomass profiles, and
potential production of the euphotic layer: Relationships reinvestigated in
view of remote-sensing applications, Limnol. Oceanogr., 34,
1545–1562, https://doi.org/10.4319/lo.1989.34.8.1545, 1989. a
NASA-OBPG: NASA Goddard Space Flight Center, Ocean Ecology Laboratory, Ocean Biology Processing Group, Moderate-resolution Imaging Spectroradiometer (MODIS) Aqua Chlorophyll Data,
https://doi.org/10.5067/AQUA/MODIS/L3M/CHL/2014, 2014a. a, b, c
NASA-OBPG: NASA Goddard Space Flight Center, Ocean Ecology Laboratory, Ocean Biology Processing Group, Sea-viewing Wide Field-of-view Sensor (SeaWiFS) Chlorophyll Data,
https://doi.org/10.5067/ORBVIEW-2/SEAWIFS/L3M/CHL/2014, 2014b. a
Nejstgaard, J. C., Tang, K. W., Steinke, M., Dutz, J., Koski, M., Antajan, E.,
and Long, J. D.: Zooplankton grazing on Phaeocystis: a quantitative
review and future challenges, in: Phaeocystis, major link in the
biogeochemical cycling of climate-relevant elements, vol. 83, pp. 147–172,
Springer, the Netherlands, https://doi.org/10.1007/s10533-007-9098-y, 2007. a, b, c, d
Nguyen, B. C., Mihalopoulos, N., and Belviso, S.: Seasonal variation of
atmospheric dimethylsulfide at Amsterdam Island in the southern Indian
Ocean, J. Atmos. Chem., 11, 123–141,
https://doi.org/10.1007/BF00053671, 1990. a
Nissen, C. and Vogt, M.: ROMS-BEC model data: Factors controlling the
competition between Phaeocystis and diatoms in the Southern Ocean
and implications for carbon export fluxes, ETH Zürich, https://doi.org/10.3929/ethz-b-000409193,
2020. a
Nissen, C., Vogt, M., Münnich, M., Gruber, N., and Haumann, F. A.: Factors controlling coccolithophore biogeography in the Southern Ocean, Biogeosciences, 15, 6997–7024, https://doi.org/10.5194/bg-15-6997-2018, 2018. a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, aa, ab, ac
O'Brien, C. J., Peloquin, J. A., Vogt, M., Heinle, M., Gruber, N., Ajani, P., Andruleit, H., Arístegui, J., Beaufort, L., Estrada, M., Karentz, D., Kopczyńska, E., Lee, R., Poulton, A. J., Pritchard, T., and Widdicombe, C.: Global marine plankton functional type biomass distributions: coccolithophores, Earth Syst. Sci. Data, 5, 259–276, https://doi.org/10.5194/essd-5-259-2013, 2013. a, b
Palter, J. B., Sarmiento, J. L., Gnanadesikan, A., Simeon, J., and Slater, R. D.: Fueling export production: nutrient return pathways from the deep ocean and their dependence on the Meridional Overturning Circulation, Biogeosciences, 7, 3549–3568, https://doi.org/10.5194/bg-7-3549-2010, 2010. a
Pasquer, B., Laruelle, G., Becquevort, S., Schoemann, V., Goosse, H., and
Lancelot, C.: Linking ocean biogeochemical cycles and ecosystem structure
and function: results of the complex SWAMCO-4 model, J. Sea Res., 53, 93–108, https://doi.org/10.1016/j.seares.2004.07.001, 2005. a, b, c, d
Peperzak, L.: Observations of flagellates in colonies of Phaeocystis globosa (Prymnesiophyceae); a hypothesis for their position in the life
cycle, J. Plankton Res., 22, 2181–2203,
https://doi.org/10.1093/plankt/22.12.2181, 2000. a
Popova, E. E., Pollard, R. T., Lucas, M. I., Venables, H. J., and Anderson, T. R.: Real-time forecasting of ecosystem dynamics during the CROZEX
experiment and the roles of light, iron, silicate, and circulation, Deep-Sea Res. Pt. II, 54, 1966–1988,
https://doi.org/10.1016/j.dsr2.2007.06.018, 2007. a
Poulton, A. J., Moore, M. C., Seeyave, S., Lucas, M. I., Fielding, S., and
Ward, P.: Phytoplankton community composition around the Crozet Plateau,
with emphasis on diatoms and Phaeocystis, Deep-Sea Res. Pt. II, 54, 2085–2105,
https://doi.org/10.1016/j.dsr2.2007.06.005, 2007. a
Reigstad, M. and Wassmann, P.: Does Phaeocystis spp. contribute
significantly to vertical export of organic carbon?, in:
Phaeocystis, major link in the biogeochemical cycling of
climate-relevant elements, vol. 83, pp. 217–234, Springer Netherlands, Heidelberg, Germany,
https://doi.org/10.1007/978-1-4020-6214-8_16,
2007. a, b
Rigual Hernández, A. S., Trull, T. W., Nodder, S. D., Flores, J. A., Bostock, H., Abrantes, F., Eriksen, R. S., Sierro, F. J., Davies, D. M., Ballegeer, A.-M., Fuertes, M. A., and Northcote, L. C.: Coccolithophore biodiversity controls carbonate export in the Southern Ocean, Biogeosciences, 17, 245–263, https://doi.org/10.5194/bg-17-245-2020, 2020. a
Rivero-Calle, S., Gnanadesikan, A., Del Castillo, C. E., Balch, W. M., and
Guikema, S. D.: Multidecadal increase in North Atlantic coccolithophores and
the potential role of rising CO2, Science, 350, 1533–1537,
https://doi.org/10.1126/science.aaa8026, 2015. a
Rosengard, S. Z., Lam, P. J., Balch, W. M., Auro, M. E., Pike, S., Drapeau, D., and Bowler, B.: Carbon export and transfer to depth across the Southern Ocean Great Calcite Belt, Biogeosciences, 12, 3953–3971, https://doi.org/10.5194/bg-12-3953-2015, 2015. a
Rousseau, V., Vaulot, D., Casotti, R., Cariou, V., Lenz, J., Gunkel, J., and
Baumann, M.: The life cycle of Phaeocystis (Prymnesiophycaea):
evidence and hypotheses, J. Marine Syst., 5, 23–39,
https://doi.org/10.1016/0924-7963(94)90014-0, 1994. a
Ryan-Keogh, T. J., DeLizo, L. M., Smith, W. O., Sedwick, P. N., McGillicuddy, D. J., Moore, C. M., and Bibby, T. S.: Temporal progression of
photosynthetic-strategy in phytoplankton in the Ross Sea, Antarctica,
J. Marine Syst., 166, 87–96, https://doi.org/10.1016/j.jmarsys.2016.08.014,
2017. a
Saavedra-Pellitero, M., Baumann, K.-H., Flores, J.-A., and Gersonde, R.: Biogeographic distribution of living coccolithophores in the Pacific sector
of the Southern Ocean, Mar. Micropaleontol., 109, 1–20,
https://doi.org/10.1016/j.marmicro.2014.03.003, 2014. a
Sarmiento, J. L., Gruber, N., Brzezinski, M. A., and Dunne, J. P.: High-latitude controls of thermocline nutrients and low latitude biological
productivity, Nature, 427, 56–60, https://doi.org/10.1038/nature02127, 2004. a
Sathyendranath, S., Stuart, V., Nair, A., Oka, K., Nakane, T., Bouman, H.,
Forget, M. H., Maass, H., and Platt, T.: Carbon-to-chlorophyll ratio and
growth rate of phytoplankton in the sea, Mar. Ecol. Prog. Ser.,
383, 73–84, https://doi.org/10.3354/meps07998, 2009. a
Schlitzer, R.: Export production in the Equatorial and North Pacific derived
from dissolved oxygen, nutrient and carbon data, J. Oceanogr., 60, 53–62,
https://doi.org/10.1023/B:JOCE.0000038318.38916.e6, 2004. a
Schoemann, V., Wollast, R., Chou, L., and Lancelot, C.: Effects of
photosynthesis on the accumulation of Mn and Fe by Phaeocystis
colonies, Limnol. Oceanogr., 46, 1065–1076,
https://doi.org/10.4319/lo.2001.46.5.1065, 2001. a
Sedwick, P. N., DiTullio, G. R., and Mackey, D. J.: Iron and manganese in the
Ross Sea, Antarctica: Seasonal iron limitation in Antarctic shelf waters,
J. Geophys. Res., 105, 11321, https://doi.org/10.1029/2000JC000256,
2000. a, b
Sedwick, P. N., Garcia, N. S., Riseman, S. F., Marsay, C. M., and DiTullio, G. R.: Evidence for high iron requirements of colonial Phaeocystis antarctica at low irradiance, in: Phaeocystis, major link in the
biogeochemical cycling of climate-relevant elements, vol. 83, pp. 83–97,
Springer Netherlands, Heidelberg, Germany, https://doi.org/10.1007/978-1-4020-6214-8_8, 2007. a
Shchepetkin, A. F. and McWilliams, J. C.: The regional oceanic modeling system
(ROMS): a split-explicit, free-surface, topography-following-coordinate
oceanic model, Ocean Model., 9, 347–404,
https://doi.org/10.1016/j.ocemod.2004.08.002, 2005. a
Siegel, D. A., Buesseler, K. O., Doney, S. C., Sailley, S. F., Behrenfeld, M. J., and Boyd, P. W.: Global assessment of ocean carbon export by
combining satellite observations and food-web models, Global Biogeochem. Cy., 28, 181–196, https://doi.org/10.1002/2013GB004743, 2014. a
Simó, R. and Pedrós-Alló, C.: Role of vertical mixing in
controlling the oceanic production of dimethyl sulphide, Nature, 402,
396–399, https://doi.org/10.1038/46516, 1999. a
Smetacek, V., Assmy, P., and Henjes, J.: The role of grazing in structuring
Southern Ocean pelagic ecosystems and biogeochemical cycles, Antarct. Sci., 16, 541–558, https://doi.org/10.1017/S0954102004002317, 2004. a, b
Smetacek, V., Klaas, C., Strass, V. H., Assmy, P., Montresor, M., Cisewski, B.,
Savoye, N., Webb, A., D'Ovidio, F., Arrieta, J. M., Bathmann, U., Bellerby, R., Berg, G. M., Croot, P., Gonzalez, S., Henjes, J., Herndl, G. J.,
Hoffmann, L. J., Leach, H., Losch, M., Mills, M. M., Neill, C., Peeken, I.,
Röttgers, R., Sachs, O., Sauter, E., Schmidt, M. M., Schwarz, J.,
Terbrüggen, A., and Wolf-Gladrow, D.: Deep carbon export from a
Southern Ocean iron-fertilized diatom bloom, Nature, 487, 313–319,
https://doi.org/10.1038/nature11229, 2012. a
Smith, W. O. and Gordon, L. I.: Hyperproductivity of the Ross Sea (Antarctica)
polynya during austral spring, Geophys. Res. Lett., 24, 233–236,
https://doi.org/10.1029/96GL03926, 1997. a, b
Smith, W. O., Dinniman, M. S., Tozzi, S., DiTullio, G. R., Mangoni, O., Modigh, M., and Saggiomo, V.: Phytoplankton photosynthetic pigments in the Ross Sea:
Patterns and relationships among functional groups, J. Marine Syst., 82, 177–185, https://doi.org/10.1016/j.jmarsys.2010.04.014, 2010. a
Smith, W. O., Ainley, D. G., Arrigo, K. R., and Dinniman, M. S.: The
Oceanography and Ecology of the Ross Sea, Annu. Rev. Mar. Sci.,
6, 469–487, https://doi.org/10.1146/annurev-marine-010213-135114, 2014. a, b, c
Soppa, M., Hirata, T., Silva, B., Dinter, T., Peeken, I., Wiegmann, S., and
Bracher, A.: Global retrieval of diatom abundance based on phytoplankton
pigments and satellite data, Remote Sens.-Basel, 6, 10089–10106,
https://doi.org/10.3390/rs61010089, 2014. a
Soppa, M., Völker, C., and Bracher, A.: Diatom phenology in the Southern
Ocean: mean patterns, trends and the role of climate Oscillations, Remote Sens.-Basel, 8, 420, https://doi.org/10.3390/rs8050420, 2016. a
Stange, P., Bach, L. T., Le Moigne, F. A. C., Taucher, J., Boxhammer, T., and
Riebesell, U.: Quantifying the time lag between organic matter production
and export in the surface ocean: Implications for estimates of export
efficiency, Geophys. Res. Lett., 44, 268–276,
https://doi.org/10.1002/2016GL070875, 2017. a
Stefels, J., Steinke, M., Turner, S., Malin, G., and Belviso, S.: Environmental constraints on the production and removal of the climatically
active gas dimethylsulphide (DMS) and implications for ecosystem modelling,
in: Phaeocystis, major link in the biogeochemical cycling of
climate-relevant elements, pp. 245–275, Springer Netherlands, Heidelberg, Germany,
https://doi.org/10.1007/978-1-4020-6214-8_18, 2007. a, b, c, d, e
Steinberg, D. K. and Landry, M. R.: Zooplankton and the ocean carbon cycle,
Annu. Rev. Mar. Sci., 9, 413–444,
https://doi.org/10.1146/annurev-marine-010814-015924, 2017. a
Strzepek, R. F., Boyd, P. W., and Sunda, W. G.: Photosynthetic adaptation to
low iron, light, and temperature in Southern Ocean phytoplankton,
P. Natl. Acad. Sci. USA, 116, 4388–4393,
https://doi.org/10.1073/pnas.1810886116, 2019. a
Tagliabue, A. and Arrigo, K. R.: Iron in the Ross Sea: 1. Impact on CO2
fluxes via variation in phytoplankton functional group and non-Redfield
stoichiometry, J. Geophys. Res.-Oceans, 110, 1–15,
https://doi.org/10.1029/2004JC002531, 2005. a, b, c
Tang, K. W., Smith, W. O., Elliott, D. T., and Shields, A. R.: Colony size of
Phaeocystis Antarctica (Prymnesiophyceae) as influenced by
zooplankton grazers, J. Phycol., 44, 1372–1378,
https://doi.org/10.1111/j.1529-8817.2008.00595.x, 2008. a
Tang, K. W., Smith, W. O., Shields, A. R., and Elliott, D. T.: Survival and
recovery of Phaeocystis antarctica (Prymnesiophyceae) from prolonged
darkness and freezing, P. Roy. Soc. B-Biol. Sci., 276, 81–90, https://doi.org/10.1098/rspb.2008.0598, 2009. a, b
Thomalla, S. J., Fauchereau, N., Swart, S., and Monteiro, P. M. S.: Regional scale characteristics of the seasonal cycle of chlorophyll in the Southern Ocean, Biogeosciences, 8, 2849–2866, https://doi.org/10.5194/bg-8-2849-2011, 2011. a
Thomalla, S. J., Racault, M.-F., Swart, S., and Monteiro, P. M. S.: High-resolution view of the spring bloom initiation and net community
production in the Subantarctic Southern Ocean using glider data, ICES
J. Mar. Sci., 72, 1999–2020,
https://doi.org/10.1093/icesjms/fsv105, 2015. a
Timmermans, K. R., van der Wagt, B., and de Baar, H. J. W.: Growth rates,
half saturation constants, and silicate, nitrate, and phosphate depletion in
relation to iron availability of four large open-ocean diatoms from the
Southern Ocean, Limnol. Oceanogr., 49, 2141–2151,
https://doi.org/10.4319/lo.2004.49.6.2141, 2004. a
Turner, J. T.: Zooplankton fecal pellets, marine snow, phytodetritus and the
ocean's biological pump, Prog. Oceanogr., 130, 205–248,
https://doi.org/10.1016/j.pocean.2014.08.005, 2015. a
Tyrrell, T. and Charalampopoulou, A.: Coccolithophore size, abundance and
calcification across Drake Passage (Southern Ocean), 2009,
https://doi.org/10.1594/PANGAEA.771715, 2009. a
van Boekel, W. H. M., Hansen, F. C., Riegman, R., and Bak, R. P. M.:
Lysis-induced decline of a Phaeocystis spring bloom and coupling
with the microbial foodweb, Mar. Ecol. Prog. Ser., 81, 269–276,
https://doi.org/10.3354/meps081269, 1992. a, b
van Hilst, C. M. and Smith, W. O.: Photosynthesis/irradiance relationships in
the Ross Sea, Antarctica, and their control by phytoplankton assemblage
composition and environmental factors, Mar. Ecol. Prog. Ser., 226,
1–12, https://doi.org/10.3354/meps226001, 2002. a, b
Veldhuis, M. J. W., Colijn, F., and Admiraal, W.: Phosphate Utilization in
Phaeocystis pouchetii (Haptophyceae), Mar. Ecol., 12,
53–62, https://doi.org/10.1111/j.1439-0485.1991.tb00083.x, 1991. a, b
Verity, P. G.: Grazing experiments and model simulations of the role of
zooplankton in Phaeocystis food webs, J. Sea Res., 43,
317–343, https://doi.org/10.1016/S1385-1101(00)00025-3, 2000. a
Vogt, M., O'Brien, C., Peloquin, J., Schoemann, V., Breton, E., Estrada, M., Gibson, J., Karentz, D., Van Leeuwe, M. A., Stefels, J., Widdicombe, C., and Peperzak, L.: Global marine plankton functional type biomass distributions: Phaeocystis spp., Earth Syst. Sci. Data, 4, 107–120, https://doi.org/10.5194/essd-4-107-2012, 2012. a, b, c, d, e, f, g
Wang, S., Elliott, S., Maltrud, M., and Cameron-Smith, P.: Influence of
explicit Phaeocystis parameterizations on the global distribution of
marine dimethyl sulfide, J. Geophys. Res.-Biogeo.,
120, 2158–2177, https://doi.org/10.1002/2015JG003017, 2015. a
Ward, B. A., Schartau, M., Oschlies, A., Martin, A. P., Follows, M. J., and
Anderson, T. R.: When is a biogeochemical model too complex? Objective model
reduction and selection for North Atlantic time-series sites, Prog. Oceanogr., 116, 49–65, https://doi.org/10.1016/j.pocean.2013.06.002, 2013. a
Winter, A., Henderiks, J., Beaufort, L., Rickaby, R. E. M., and Brown, C. W.:
Poleward expansion of the coccolithophore Emiliania huxleyi,
J. Plankton Res., 36, 316–325, https://doi.org/10.1093/plankt/fbt110,
2013.
a
Wright, S. W., van den Enden, R. L., Pearce, I., Davidson, A. T., Scott, F. J.,
and Westwood, K. J.: Phytoplankton community structure and stocks in the
Southern Ocean (30-80∘E) determined by CHEMTAX analysis of HPLC
pigment signatures, Deep-Sea Res. Pt. II, 57, 758–778,
https://doi.org/10.1016/j.dsr2.2009.06.015, 2010. a
Yager, P. L., Sherrell, R. M., Stammerjohn, S. E., Ducklow, H. W., Schofield, O. M. E., Ingall, E. D., Wilson, S. E., Lowry, K. E., Williams, C. M.,
Riemann, L., Bertilsson, S., Alderkamp, A.-C., Dinasquet, J., Logares, R.,
Richert, I., Sipler, R. E., Melara, A. J., Mu, L., Newstead, R. G., Post, A. F., Swalethorp, R., and van Dijken, G. L.: A carbon budget for the
Amundsen Sea Polynya, Antarctica: Estimating net community production and
export in a highly productive polar ecosystem, Elem. Sci. Anth., 4, 000140, https://doi.org/10.12952/journal.elementa.000140, 2016. a, b
Yang, E. J., Jiang, Y., and Lee, S. H.: Microzooplankton herbivory and
community structure in the Amundsen Sea, Antarctica, Deep-Sea Res. Pt. II, 123, 58–68,
https://doi.org/10.1016/j.dsr2.2015.06.001, 2016. a
Yang, S., Gruber, N., Long, M. C., and Vogt, M.: ENSO-driven variability of
denitrification and suboxia in the Eastern Tropical Pacific Ocean, Global Biogeochem. Cy., 31, 1470–1487, https://doi.org/10.1002/2016GB005596, 2017. a
Zondervan, I.: The effects of light, macronutrients, trace metals and CO2
on the production of calcium carbonate and organic carbon in
coccolithophores – A review, Deep-Sea Res. Pt. II, 54, 521–537,
https://doi.org/10.1016/j.dsr2.2006.12.004, 2007. a
Zweng, M. M., Reagan, J. R., Antonov, J. I., Mishonov, A. V., Boyer, T. P.,
Garcia, H. E., Baranova, O. K., Johnson, D. R., Seidov, D., and
Bidlle, M. M.: World Ocean Atlas 2013, Volume 2: Salinity, Silver Spring, MD, NOAA Atlas NESDIS
74, 2, 39 pp, 2013. a
Short summary
Using a regional Southern Ocean ecosystem model, we find that the relative importance of Phaeocystis and diatoms at high latitudes is controlled by iron and temperature variability, with light levels controlling the seasonal succession in coastal areas. Yet, biomass losses via aggregation and grazing matter as well. We show that the seasonal succession of Phaeocystis and diatoms impacts the seasonality of carbon export fluxes with ramifications for nutrient cycling and food web dynamics.
Using a regional Southern Ocean ecosystem model, we find that the relative importance of...
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