Articles | Volume 17, issue 3
https://doi.org/10.5194/bg-17-635-2020
© Author(s) 2020. 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-17-635-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Feb 2020
Research article |
| 07 Feb 2020
The Arctic picoeukaryote Micromonas pusilla benefits from ocean acidification under constant and dynamic light
Emily White
CORRESPONDING AUTHOR
Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und
Meeresforschung, 27570 Bremerhaven, Germany
Clara J. M. Hoppe
Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und
Meeresforschung, 27570 Bremerhaven, Germany
Björn Rost
Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und
Meeresforschung, 27570 Bremerhaven, Germany
Fachbereich Biologie/Chemie, Universität Bremen, Leobener Strasse, 28359 Bremen, Germany
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Karen M. Brandenburg, Björn Rost, Dedmer B. Van de Waal, Mirja Hoins, and Appy Sluijs
Biogeosciences, 19, 3305–3315, https://doi.org/10.5194/bg-19-3305-2022, https://doi.org/10.5194/bg-19-3305-2022, 2022
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Reconstructions of past CO2 concentrations rely on proxy estimates, with one line of proxies relying on the CO2-dependence of stable carbon isotope fractionation in marine phytoplankton. Culturing experiments provide insights into which processes may impact this. We found, however, that the methods with which these culturing experiments are performed also influence 13C fractionation. Caution should therefore be taken when extrapolating results from these experiments to proxy applications.
Clara Jule Marie Hoppe, Clara M. Flintrop, and Björn Rost
Biogeosciences, 15, 4353–4365, https://doi.org/10.5194/bg-15-4353-2018, https://doi.org/10.5194/bg-15-4353-2018, 2018
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Responses of the Arctic microalgae Micromonas pusilla to different pCO2 levels were investigated at two temperatures. We observed that warming and ocean acidification (OA) synergistically increased growth rates. Furthermore, elevated temperature shifted the pCO2 optimum of biomass production to higher levels. This seem to be caused by more efficient photosynthesis under warmer and more acidic conditions. Our findings explain the dominance of picoeukaryotes frequently observed in OA experiments.
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Upwelled plankton community modulates surface bloom succession and nutrient availability in a natural plankton assemblage
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Early life stages of a Mediterranean coral are vulnerable to ocean warming and acidification
Mediterranean seagrasses as carbon sinks: methodological and regional differences
Contrasting vertical distributions of recent planktic foraminifera off Indonesia during the southeast monsoon: implications for paleoceanographic reconstructions
The onset of the spring phytoplankton bloom in the coastal North Sea supports the Disturbance Recovery Hypothesis
Species richness and functional attributes of fish assemblages across a large-scale salinity gradient in shallow coastal areas
Modeling the growth and sporulation dynamics of the macroalga Ulva in mixed-age populations in cultivation and the formation of green tides
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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
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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.
Cara Nissen and Meike Vogt
Biogeosciences, 18, 251–283, https://doi.org/10.5194/bg-18-251-2021, https://doi.org/10.5194/bg-18-251-2021, 2021
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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.
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.
Karl M. Attard and Ronnie N. Glud
Biogeosciences, 17, 4343–4353, https://doi.org/10.5194/bg-17-4343-2020, https://doi.org/10.5194/bg-17-4343-2020, 2020
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Light-use efficiency defines the ability of primary producers to convert sunlight energy to primary production. This report provides a framework to compute hourly and daily light-use efficiency using underwater eddy covariance, a recent technological development that produces habitat-scale rates of primary production for many different habitat types. The approach, tested on measured flux data, provides a useful means to compare habitat productivity across time and space.
Stacy Deppeler, Kai G. Schulz, Alyce Hancock, Penelope Pascoe, John McKinlay, and Andrew Davidson
Biogeosciences, 17, 4153–4171, https://doi.org/10.5194/bg-17-4153-2020, https://doi.org/10.5194/bg-17-4153-2020, 2020
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Our study showed how ocean acidification can exert both direct and indirect influences on the interactions among trophic levels within the microbial loop. Microbial grazer abundance was reduced at CO2 concentrations at and above 634 µatm, while microbial communities increased in abundance, likely due to a reduction in being grazed. Such changes in predator–prey interactions with ocean acidification could have significant effects on the food web and biogeochemistry in the Southern Ocean.
Mirjana Najdek, Marino Korlević, Paolo Paliaga, Marsej Markovski, Ingrid Ivančić, Ljiljana Iveša, Igor Felja, and Gerhard J. Herndl
Biogeosciences, 17, 3299–3315, https://doi.org/10.5194/bg-17-3299-2020, https://doi.org/10.5194/bg-17-3299-2020, 2020
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The response of Cymodocea nodosa to environmental changes was reported during a 15-month period. The meadow decline was triggered in spring by the simultaneous reduction of available light in the water column and the creation of anoxic conditions in the rooted area. This disturbance was critical for the plant since it took place during its recruitment phase when metabolic needs are maximal and stored reserves minimal. The loss of such habitat-forming seagrass is a major environmental concern.
Timm Schoening, Autun Purser, Daniel Langenkämper, Inken Suck, James Taylor, Daphne Cuvelier, Lidia Lins, Erik Simon-Lledó, Yann Marcon, Daniel O. B. Jones, Tim Nattkemper, Kevin Köser, Martin Zurowietz, Jens Greinert, and Jose Gomes-Pereira
Biogeosciences, 17, 3115–3133, https://doi.org/10.5194/bg-17-3115-2020, https://doi.org/10.5194/bg-17-3115-2020, 2020
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Seafloor imaging is widely used in marine science and industry to explore and monitor areas of interest. The selection of the most appropriate imaging gear and deployment strategy depends on the target application. This paper compares imaging platforms like autonomous vehicles or towed camera frames and different deployment strategies of those in assessing the megafauna abundance of polymetallic-nodule fields. The deep-sea mining industry needs that information for robust impact monitoring.
Tatsuro Tanioka and Katsumi Matsumoto
Biogeosciences, 17, 2939–2954, https://doi.org/10.5194/bg-17-2939-2020, https://doi.org/10.5194/bg-17-2939-2020, 2020
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We conducted an extensive literature survey (meta-analysis) on how the C : N : P ratio varies with change in key environmental drivers. We found that the expected reduction in nutrients and warming under the future climate change scenario is likely to result in increased C : P and C : N of marine phytoplankton. Further, our findings highlight the greater stoichiometric plasticity of eukaryotes over prokaryotes, which provide us insights on how to understand and model plankton.
Vanessa Joglar, Antero Prieto, Esther Barber-Lluch, Marta Hernández-Ruiz, Emilio Fernández, and Eva Teira
Biogeosciences, 17, 2807–2823, https://doi.org/10.5194/bg-17-2807-2020, https://doi.org/10.5194/bg-17-2807-2020, 2020
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Coastal marine ecosystems are among the most ecologically and economically productive areas providing a large fraction of ecosystem goods and services to human populations, and B vitamins have long been considered important growth factors for phytoplankton. Our findings indicate that the responses of microbial plankton to B-vitamin supply are mainly driven by the bacterial community composition and that microbial plankton in this area seems to be well adapted to cope with B-vitamin shortage.
Tasnim Patel, Henri Robert, Cedric D'Udekem D'Acoz, Koen Martens, Ilse De Mesel, Steven Degraer, and Isa Schön
Biogeosciences, 17, 2731–2744, https://doi.org/10.5194/bg-17-2731-2020, https://doi.org/10.5194/bg-17-2731-2020, 2020
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Exploitation of deep-sea resources in one of the largest ecosystems on the planet has rendered research of its biodiversity more urgent than ever before. We investigated the known habitats and connectivity of deep-sea scavenging amphipods and obtained important knowledge about several species. We also demonstrated that a long-term disturbance experiment has possibly reduced amphipod biodiversity. These data and further sampling expeditions are instrumental for formulating sustainable policies.
Daphne Cuvelier, Pedro A. Ribeiro, Sofia P. Ramalho, Daniel Kersken, Pedro Martinez Arbizu, and Ana Colaço
Biogeosciences, 17, 2657–2680, https://doi.org/10.5194/bg-17-2657-2020, https://doi.org/10.5194/bg-17-2657-2020, 2020
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Polymetallic nodule mining will remove hard substrata from the abyssal deep-sea floor. The only neighbouring ecosystems featuring hard substratum are seamounts, and their inhabiting fauna could aid in recovery post-mining. Nevertheless, first observations of seamount megafauna were very different from nodule-associated megafauna and showed little overlap. The possible uniqueness of these ecosystems implies that they should be included in management plans for the conservation of biodiversity.
Karen F. Wishner, Brad Seibel, and Dawn Outram
Biogeosciences, 17, 2315–2339, https://doi.org/10.5194/bg-17-2315-2020, https://doi.org/10.5194/bg-17-2315-2020, 2020
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Increasing deoxygenation and oxygen minimum zone expansion are consequences of global warming. Copepod species had different vertical distribution strategies and physiologies associated with oxygen profile variability (0–1000 m). Species (1) changed vertical distributions and maximum abundance depth, (2) shifted diapause depth, (3) changed diel vertical migration depths, or (4) changed epipelagic depth range in the aerobic mixed layer. Present-day variability helps predict future scenarios.
Magdalini Christodoulou, Timothy O'Hara, Andrew F. Hugall, Sahar Khodami, Clara F. Rodrigues, Ana Hilario, Annemiek Vink, and Pedro Martinez Arbizu
Biogeosciences, 17, 1845–1876, https://doi.org/10.5194/bg-17-1845-2020, https://doi.org/10.5194/bg-17-1845-2020, 2020
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Unexpectedly high diversity was revealed in areas licenced for polymetallic nodule mining exploration in the Pacific Ocean. For the first time, a comprehensive reference library including 287 novel ophiuroid sequences allocated to 43 species was produced. Differences in food availability along the nodule province of CCZ were reflected in the biodiversity patterns observed. The APEI3's dissimilarity with the exploration contract areas questions its ability to serve as a biodiversity reservoir.
Julie Meilland, Hélène Howa, Vivien Hulot, Isaline Demangel, Joëlle Salaün, and Thierry Garlan
Biogeosciences, 17, 1437–1450, https://doi.org/10.5194/bg-17-1437-2020, https://doi.org/10.5194/bg-17-1437-2020, 2020
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This study reports on planktonic foraminifera (PF) diversity and distribution in the Barents Sea. The species Globigerinita uvula and Turborotalita quinqueloba dominate the water column while surface sediments are dominated by Neogloboquadrina pachyderma. We hypothesize the unusual dominance of G. uvula in the water to be a seasonal signal or a result of climate forcing. Size-normalized-protein concentrations of PF show a northward decrease, suggesting biomass to vary with the environment.
Julien Richirt, Bettina Riedel, Aurélia Mouret, Magali Schweizer, Dewi Langlet, Dorina Seitaj, Filip J. R. Meysman, Caroline P. Slomp, and Frans J. Jorissen
Biogeosciences, 17, 1415–1435, https://doi.org/10.5194/bg-17-1415-2020, https://doi.org/10.5194/bg-17-1415-2020, 2020
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The paper presents the response of benthic foraminiferal communities to seasonal absence of oxygen coupled with the presence of hydrogen sulfide, considered very harmful for several living organisms.
Our results suggest that the foraminiferal community mainly responds as a function of the duration of the adverse conditions.
This knowledge is especially useful to better understand the ecology of benthic foraminifera but also in the context of palaeoceanographic interpretations.
Xiangqi Yi, Fei-Xue Fu, David A. Hutchins, and Kunshan Gao
Biogeosciences, 17, 1169–1180, https://doi.org/10.5194/bg-17-1169-2020, https://doi.org/10.5194/bg-17-1169-2020, 2020
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Combined effects of warming and light intensity were estimated in N2-fixing cyanobacterium Trichodesmium. Its physiological responses to warming were significantly modulated by light, with growth peaking at 27 °C under the light-saturating condition but being non-responsive across the range of 23–31 °C under the light-limiting condition. Light shortage also weakened the acclimation ability of Trichodesmium to warming, making light-limited Trichodesmium more sensitive to acute temperature change.
Jan Goleń, Jarosław Tyszka, Ulf Bickmeyer, and Jelle Bijma
Biogeosciences, 17, 995–1011, https://doi.org/10.5194/bg-17-995-2020, https://doi.org/10.5194/bg-17-995-2020, 2020
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We studied the organisation and dynamics of actin in foraminifera. Actin is one of the key structural proteins in most lifeforms. Our investigations show that in foraminifera it forms small granules, around 1 µm in diameter, that display rapid movement. This granularity is unusual in comparison to other organisms. We suppose that these granules are most likely involved in the formation of all types of pseudopods responsible for movement, food capturing, biomineralisation, and other functions.
Cited articles
AMAP: AMAP Assessment 2018: Arctic Ocean Acidifcation, Arctic Monitoring and
Assessment Programme (AMAP), Tromsø, Norway, 187 pp., 2018.
Apel, K. and Hirt, H.: Reactive oxygen species: metabolism, oxidative
stress, and signal transduction, Annu. Rev. Plant Biol., 55, 373–399,
https://doi.org/10.1146/annurev.arplant.55.031903.141701, 2004.
Arrigo, K. R., van Dijken, G., and Pabi, S.: Impact of a shrinking Arctic
ice cover on marine primary production, Geophys. Res. Lett., 35, L19603,
https://doi.org/10.1029/2008GL035028, 2008.
Asada, K.: The water-water cycle in chloroplasts: Scavenging of Active
Oxygens and Dissipation of Excess Photons, Annu. Rev. Plant Phys., 50, 601–639, https://doi.org/10.1146/annurev.arplant.50.1.601, 1999.
Bach, L. T., Mackinder, L. C., Schulz, K. G., Wheeler, G., Schroeder, D. C.,
Brownlee, C., and Riebesell, U.: Dissecting the impact of CO2 and pH on
the mechanisms of photosynthesis and calcification in the coccolithophore
Emiliania huxleyi, New. Phytol., 199, 121–134, https://doi.org/10.1111/nph.12225, 2013.
Bach, L. T., Alvarez-Fernandez, S., Hornick, T., Stuhr, A., and Riebesell,
U.: Simulated ocean acidification reveals winners and losers in coastal
phytoplankton, PloS One, 12, e0188198, https://doi.org/10.1371/journal.pone.0188198, 2017.
Badger, M. R., Andrews, T. J., Whitney, S. M., Ludwig, M., Yellowlees, D.
C., Leggat, W., and Price, G. D.: The diversity and coevolution of Rubisco,
plastids, pyrenoids, and chloroplast-based CO2-concentrating mechanisms
in algae, Can. J. Bot., 76, 1052–1071, https://doi.org/10.1139/b98-074, 1998.
Bates, N. R. and Mathis, J. T.: The Arctic Ocean marine carbon cycle: evaluation of air-sea CO2 exchanges, ocean acidification impacts and potential feedbacks, Biogeosciences, 6, 2433–2459, https://doi.org/10.5194/bg-6-2433-2009, 2009.
Behrenfeld, M. J., Prasil, O., Kolber, Z. S., Babin, M., and Falkowski, P.
G.: Compensatory changes in photosystem II electron turnover rates protect
photosynthesis from photoinhibition, Photosynth. Res., 58, 259–268,
https://doi.org/10.1023/A:1006138630573, 1998.
Behrenfeld, M. J., Halsey, K. H., and Milligan, A. J.: Evolved physiological
responses of phytoplankton to their integrated growth environment, Philos.
T. R. Soc. Lon. B, 363, 2687–2703,
https://doi.org/10.1098/rstb.2008.0019, 2008.
Benov, L., Sztejnberg, L., and Fridovich, I.: Critical evaluation of the use
of hydroethidine as a measure of superoxide anion radical, Free Radical Bio.
Med., 25, 826–831, https://doi.org/10.1016/S0891-5849(98)00163-4, 1998.
Blankenship, R. E.: Molecular mechanisms of photosynthesis, 2nd Edn., Wiley
Blackwell, USA, 2014.
Boelen, P., van de Poll, W. H., van der Strate, H. J., Neven, I. A.,
Beardall, J., and Buma, A. G.: Neither elevated nor reduced CO2 affects
the photophysiological performance of the marine Antarctic diatom
Chaetoceros brevis, J. Exp. Mar. Biol. Ecol., 406, 38–45, https://doi.org/10.1016/j.jembe.2011.06.012,
2011.
Brading, P., Warner, M. E., Davey, P., Smith, D. J., Achterberg, E. P., and
Suggett, D. J.: Differential effects of ocean acidification on growth and
photosynthesis among phylotypes of Symbiodinium (Dinophyceae), Limnol. Oceanogr., 56,
927–938, https://doi.org/10.4319/lo.2011.56.3.0927, 2011.
Brewer, P. G., Bradshaw, A., and Williams, R.: Measurements of total carbon
dioxide and alkalinity in the North Atlantic Ocean in 1981, in: The changing
carbon cycle, Springer, New York, NY, 348–370, https://doi.org/10.1007/978-1-4757-1915-4_18, 1986.
Brussaard, C. P. D., Noordeloos, A. A. M., Witte, H., Collenteur, M. C. J., Schulz, K., Ludwig, A., and Riebesell, U.: Arctic microbial community dynamics influenced by elevated CO2 levels, Biogeosciences, 10, 719–731, https://doi.org/10.5194/bg-10-719-2013, 2013.
Burkhardt, S., Amoroso, G., Riebesell, U., and Sültemeyer, D.: CO2
and
Denman, K. L. and Gargett, A. E.: Time and space scales of vertical mixing
and advection of phytoplankton in the upper ocean, Limnol. Oceanogr., 28,
801–815, https://doi.org/10.4319/lo.1983.28.5.0801, 1983.
Dickson, A. G. and Millero, F. J.: A comparison of the equilibrium
constants for the dissociation of carbonic acid in seawater media, Deep-Sea
Res., 34, 1733–1743,
https://doi.org/10.1016/0198-0149(87)90021-5, 1987.
Dickson, A. G., Sabine, C. L., and Christian, J. R.: Guide to best practices
for ocean CO2 measurements, North Pacific Marine Science Organization,
Sidney, British Columbia, 2007.
Engel, A., Schulz, K. G., Riebesell, U., Bellerby, R., Delille, B., and Schartau, M.: Effects of CO2 on particle size distribution and phytoplankton abundance during a mesocosm bloom experiment (PeECE II), Biogeosciences, 5, 509–521, https://doi.org/10.5194/bg-5-509-2008, 2008.
Falkowski, P. G.: Light-shade adaptation in marine phytoplankton, in:
Primary productivity in the sea, Vol. 19, Springer, Boston, USA, 1980.
Falkowski, P. G. and Raven, J. A.: Aquatic photosynthesis, 2nd Edn.,
Princeton University Press, USA, 2013.
Fu, F.-X., Warner, M. E., Zhang, Y., Feng, Y., and Hutchins, D. A.: Effects
of Increased Temperature and CO2 on Photosynthesis, Growth, and
Elemental Ratios in Marine Synechococcus and Prochlorococcus (Cyanobacteria), J. Phycol., 43, 485–496,
https://doi.org/10.1111/j.1529-8817.2007.00355.x, 2007.
Gao, K., Helbling, E. W., Häder, D. P., and Hutchins, D. A.: Responses
of marine primary producers to interactions between ocean acidification,
solar radiation, and warming, Mar. Ecol.-Prog. Ser., 470, 167–189,
https://doi.org/10.3354/meps10043, 2012.
Granskog, M. A., Stedmon, C. A., Dodd, P. A., Amon, R. M. W., Pavlov, A. K.,
de Steur, L., and Hansen, E.: Characteristics of colored dissolved organic
matter (CDOM) in the Arctic outflow in the Fram Strait: Assessing the
changes and fate of terrigenous CDOM in the Arctic Ocean, J. Geophys. Res.-Oceans, 117, C12021, https://doi.org/10.1029/2012jc008075, 2012.
Guillard, R. R. and Ryther, J. H.: Studies of marine planktonic diatoms. I.
Cyclotella nana Hustedt, and Detonula confervacea (cleve) Gran, Can. J. Microbiol., 8, 229–239, https://doi.org/10.1139/m62-029,
1962.
Hopkinson, B. M., Dupont, C. L., Allen, A. E., and Morel, F. M.: Efficiency
of the CO2-concentrating mechanism of diatoms, P. Natl. Acad. Sci.
USA, 108, 3830–3837, https://doi.org/10.1073/pnas.1018062108, 2011.
Hoppe, C. J., Holtz, L. M., Trimborn, S., and Rost, B.: Ocean acidification
decreases the light-use efficiency in an Antarctic diatom under dynamic but
not constant light, New Phytol., 207, 159–171, https://doi.org/10.1111/nph.13334, 2015.
Hoppe, C. J. M., Langer, G., Rokitta, S. D., Wolf-Gladrow, D. A., and Rost, B.: Implications of observed inconsistencies in carbonate chemistry measurements for ocean acidification studies, Biogeosciences, 9, 2401–2405, https://doi.org/10.5194/bg-9-2401-2012, 2012.
Hoppe, C. J., Schuback, N., Semeniuk, D. M., Maldonado, M. T., and Rost, B.:
Functional Redundancy Facilitates Resilience of Subarctic Phytoplankton
Assemblages toward Ocean Acidification and High Irradiance, Front. Mar.
Sci., 4, 229, https://doi.org/10.3389/fmars.2017.00229, 2017.
Hoppe, C. J. M., Flintrop, C. M., and Rost, B.: The Arctic picoeukaryote Micromonas pusilla benefits synergistically from warming and ocean acidification, Biogeosciences, 15, 4353–4365, https://doi.org/10.5194/bg-15-4353-2018, 2018.
Houghton, J., Ding, Y., and Griggs, D.: Climate Change: Scientific Basis,
IPCC TAR Working Group 1, The Press Syndicate of Cambridge University, UK,
2001.
Hu, A. and Bates, S. C.: Internal climate variability and projected future
regional steric and dynamic sea level rise, Nat. Commun., 9, 1068,
https://doi.org/10.1038/s41467-018-03474-8, 2018.
Huisman, J.: Population dynamics of light-limited phytoplankton: microcosm
experiments, Ecology, 80, 202–210, https://doi.org/10.1890/0012-9658(1999)080[0202:PDOLLP]2.0.CO;2, 1999.
Iglesias-Rodriguez, M., Nimer, N., and Merrett, M.: Carbon
dioxide-concentrating mechanism and the development of extracellular
carbonic anhydrase in the marine picoeukaryote Micromonas pusilla, New Phytol., 140, 685–690,
https://doi.org/10.1046/j.1469-8137.1998.00309.x, 1998.
Jin, P., Gao, K., Villafañe, V. E., Campbell, D. A., and Helbling, W.:
Ocean acidification alters the photosynthetic responses of a
coccolithophorid to fluctuating UV and visible radiation, Plant Physiol.,
162, 2084–2094, https://doi.org/10.1104/pp.113.219543, 2013.
Kim, D., Watanabe, M., Nakayasu, Y., and Kohata, K.: Production of
superoxide anion and hydrogen peroxide associated with cell growth of
Chattonella antiqua, Aquat. Microb. Ecol., 35, 57–64, https://doi.org/10.3354/ame035057, 2004.
Kim, J.-H., Kim, K. Y., Kang, E. J., Lee, K., Kim, J.-M., Park, K.-T., Shin, K., Hyun, B., and Jeong, H. J.: Enhancement of photosynthetic carbon assimilation efficiency by phytoplankton in the future coastal ocean, Biogeosciences, 10, 7525–7535, https://doi.org/10.5194/bg-10-7525-2013, 2013.
Klughammer, C. and Schreiber, U.: Complementary PS II quantum yields
calculated from simple fluorescence parameters measured by PAM fluorometry
and the Saturation Pulse method, PAM Appl. Notes, 1, 27–35, 2008.
Knap, A., Michaels, A., Close, A., Ducklow, H., and Dickson, A.: Protocols
for the Joint Global Ocean Flux Study (JGOFS) Core Measurements, UNESCO,
Paris, France, 170 pp., 1996.
Köhler, J., Wang, L., Guislain, A., and Shatwell, T.: Influence of
vertical mixing on light-dependency of phytoplankton growth, Limnol.
Oceanogr., 63, 1156–1167, https://doi.org/10.1002/lno.10761, 2018.
Kolber, Z. S., Prášil, O., and Falkowski, P. G.: Measurements of
variable chlorophyll fluorescence using fast repetition rate techniques:
defining methodology and experimental protocols, BBA-Bioenergetics, 1367, 88–106, https://doi.org/10.1016/S0005-2728(98)00135-2, 1998.
Kramer, D. M., Johnson, G., Kiirats, O., and Edwards, G. E.: New fluorescence
parameters for the determination of QA redox state and excitation energy
fluxes, Photosynth. Res., 79, 209–218,
https://doi.org/10.1023/B:PRES.0000015391.99477.0d, 2004.
Li, W. K., McLaughlin, F. A., Lovejoy, C., and Carmack, E. C.: Smallest
algae thrive as the Arctic Ocean freshens, Science, 326, 539–539,
https://doi.org/10.1126/science.1179798, 2009.
Litchman, E.: Growth rates of phytoplankton under fluctuating light,
Freshwater Biol., 44, 223–235, https://doi.org/10.1046/j.1365-2427.2000.00559.x, 2000.
Litchman, E., Klausmeier, C. A., and Bossard, P.: Phytoplankton nutrient
competition under dynamic light regimes, Limnol. Oceanogr., 49, 1457–1462,
https://doi.org/10.4319/lo.2004.49.4_part_2.1457, 2004.
Lohbeck, K. T., Riebesell, U., and Reusch, T. B.: Adaptive evolution of a
key phytoplankton species to ocean acidification, Nat. Geosci., 5, 346,
https://doi.org/10.1038/ngeo1441, 2012.
Lovejoy, C., Vincent, W. F., Bonilla, S., Roy, S., Martineau, M. J.,
Terrado, R., Potvin, M., Massana, R., and Pedrós-Alió, C.:
Distribution, phylogeny, and growth of cold-adapted picoprasinophytes in
Arctic Seas, J. Phycol., 43, 78–89, https://doi.org/10.1111/j.1529-8817.2006.00310.x,
2007.
Maat, D. S., Crawfurd, K. J., Timmermans, K. R., and Brussaard, C. P.:
Elevated pCO2 and phosphate limitation favor Micromonas pusilla through stimulated growth
and reduced viral impact, Appl. Environ. Microb., 80, 3119–3127,
https://doi.org/10.1128/AEM.03639-13., 2014.
MacIntyre, H. L., Kana, T. M., and Geider, R. J.: The effect of water motion
on short-term rates of photosynthesis by marine phytoplankton, Trends Plant
Sci., 5, 12–17, https://doi.org/10.1016/S1360-1385(99)01504-6, 2000.
Marquardt, M., Vader, A., Stübner, E. I., Reigstad, M., and Gabrielsen,
T. M.: Strong seasonality of marine microbial eukaryotes in a high-arctic
fjord (Isfjorden, in West Spitsbergen, Norway), Appl. Environ.
Microb., 82, 1868–1880, https://doi.org/10.1128/AEM.03208-15, 2016.
McKie-Krisberg, Z. M. and Sanders, R. W.: Phagotrophy by the picoeukaryotic
green alga Micromonas: implications for Arctic Oceans, ISME J., 8, 1953–1961,
https://doi.org/10.1038/ismej.2014.16, 2014.
Meakin, N. G. and Wyman, M.: Rapid shifts in picoeukaryote community
structure in response to ocean acidification, ISME J., 5, 1397–1405,
https://doi.org/10.1038/ismej.2011.18, 2011.
Mehrbach, C., Culberson, C., Hawley, J., and Pytkowicx, R.: Measurement of
the apparent dissociation constants of carbonic acid in seawater at
atmospheric pressure, Limnol. Oceanogr., 18, 897–907,
https://doi.org/10.4319/lo.1973.18.6.0897, 1973.
Miller, G. H., Alley, R. B., Brigham-Grette, J., Fitzpatrick, J. J., Polyak,
L., Serreze, M. C., and White, J. W.: Arctic amplification: can the past
constrain the future?, Quaternary Sci. Rev., 29, 1779–1790,
https://doi.org/10.1016/j.quascirev.2010.02.008, 2010.
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.
Newbold, L. K., Oliver, A. E., Booth, T., Tiwari, B., Desantis, T., Maguire,
M., Andersen, G., van der Gast, C. J., and Whiteley, A. S.: The response of
marine picoplankton to ocean acidification, Environ. Microbiol., 14,
2293–2307, https://doi.org/10.1111/j.1462-2920.2012.02762.x, 2012.
Nöthig, E.-M., Bracher, A., Engel, A., Metfies, K., Niehoff, B., Peeken,
I., Bauerfeind, E., Cherkasheva, A., Gäbler-Schwarz, S., and Hardge, K.:
Summertime plankton ecology in Fram Strait – a compilation of long-and
short-term observations, Polar Res., 34, 23349, https://doi.org/10.3402/polar.v34.23349,
2015.
Oxborough, K. and Baker, N. R.: Resolving chlorophyll a fluorescence images of
photosynthetic efficiency into photochemical and non-photochemical
components – calculation of qP and
Oxborough, K., Moore, C. M., Suggett, D. J., Lawson, T., Chan, H. G., and
Geider, R. J.: Direct estimation of functional PSII reaction center
concentration and PSII electron flux on a volume basis: a new approach to
the analysis of Fast Repetition Rate fluorometry (FRRf) data, Limnol.
Oceanogr.-Meth., 10, 142–154, https://doi.org/10.4319/lom.2012.10.142, 2012.
Pachauri, R. K., Allen, M. R., Barros, V. R., Broome, J., Cramer, W.,
Christ, R., Church, J. A., Clarke, L., Dahe, Q., and Dasgupta, P.: Climate
change 2014: synthesis report. Contribution of Working Groups I, II and III
to the fifth assessment report of the Intergovernmental Panel on Climate
Change, IPCC, Geneva, Switzerland, 2014.
Palmer, M. A., Van Dijken, G. L., Mitchell, B. G., Seegers, B. J., Lowry, K.
E., Mills, M. M., and Arrigo, K. R.: Light and nutrient control of
photosynthesis in natural phytoplankton populations from the Chukchi and
Beaufort seas, Arctic Ocean, Limnol. Oceanogr., 58, 2185–2205,
https://doi.org/10.4319/lo.2013.58.6.2185, 2013.
Peterson, B. J., Holmes, R. M., McClelland, J. W., Vorosmarty, C. J.,
Lammers, R. B., Shiklomanov, A. I., Shiklomanov, I. A., and Rahmstorf, S.:
Increasing river discharge to the Arctic Ocean, Science, 298, 2171–2173,
https://doi.org/10.1126/science.1077445, 2002.
Pierrot, D., Lewis, E., and Wallace, D.: MS Excel program developed for
CO2 system calculations, ORNL/CDIAC-105a. Carbon Dioxide Information
Analysis Center, Oak Ridge National Laboratory, US Department of Energy, Oak
Ridge, Tennessee, 2006.
Pörtner, H.-O., Karl, D. M., Boyd, P. W., Cheung, W., Lluch-Cota, S. E.,
Nojiri, Y., Schmidt, D. N., Zavialov, P. O., Alheit, J., and Aristegui, J.:
Ocean systems, in: Climate change 2014: impacts, adaptation, and
vulnerability. Part A: global and sectoral aspects, Contribution of working
group II to the fifth assessment report of the intergovernmental panel on
climate change, Cambridge University Press, 411–484, Cambridge, UK and NY,
USA, 2014.
Prado, R., Rioboo, C., Herrero, C., Suarez-Bregua, P., and Cid, A.: Flow
cytometric analysis to evaluate physiological alterations in
herbicide-exposed Chlamydomonas moewusii cells, Ecotoxicology, 21, 409–420,
https://doi.org/10.1007/s10646-011-0801-3, 2012.
Ragni, M., Airs, R. L., Leonardos, N., and Geider, R. J.: Photoinhibition of
PSII in Emiliania Huxleyi (Haptophyta) under High Light Stress: The Roles of Photoacclimation,
Photoprotection, and Photorepair, J. Phycol., 44, 670–683,
https://doi.org/10.1111/j.1529-8817.2008.00524.x, 2008.
Reinfelder, J. R.: Carbon concentrating mechanisms in eukaryotic marine
phytoplankton, Annu. Rev. Mar. Sci., 3, 291–315,
https://doi.org/10.1146/annurev-marine-120709-142720, 2011.
Riebesell, U. and Gattuso, J.-P.: Lessons learned from ocean acidification
research, Nat. Clim. Change, 5, 12–14, 2015.
Riebesell, U. and Tortell, P. D.: Effects of ocean acidification on pelagic
organisms and ecosystems, Ocean acidification, Oxford University Press,
Oxford, UK, 2011.
Rokitta, S. D., John, U., and Rost, B.: Ocean acidification affects
redox-balance and ion-homeostasis in the life-cycle stages of Emiliania huxleyi, PLoS One, 7,
1–10, e52212, https://doi.org/10.1371/journal.pone.0052212, 2012.
Rost, B., Riebesell, U., and Sültemeyer, D.: Carbon acquisition of
marine phytoplankton: effect of photoperiod length, Limnol. Oceanogr., 51,
12–20, https://doi.org/10.4319/lo.2006.51.1.0012, 2006.
Rost, B., Zondervan, I., and Wolf-Gladrow, D.: Sensitivity of phytoplankton
to future changes in ocean carbonate chemistry: current knowledge,
contradictions and research directions, Mar. Ecol.-Prog. Ser., 373, 227–237,
https://doi.org/10.3354/meps07776, 2008.
Schaum, C. E. and Collins, S.: Plasticity predicts evolution in a marine
alga, Proc. Biol. Sci., 281, 20141486, https://doi.org/10.1098/rspb.2014.1486, 2014.
Schaum, E., Rost, B., Millar, A. J., and Collins, S.: Variation in plastic
responses of a globally distributed picoplankton species to ocean
acidification, Nat. Clim. Change, 3, 298–302, https://doi.org/10.1038/nclimate1774,
2012.
Schuback, N., Hoppe, C. J., Tremblay, J. É., Maldonado, M. T., and
Tortell, P. D.: Primary productivity and the coupling of photosynthetic
electron transport and carbon fixation in the Arctic Ocean, Limnol.
Oceanogr., 62, 898–921, https://doi.org/10.1002/lno.10475, 2017.
Schulz, K. G., Bach, L. T., Bellerby, R. G., Bermúdez, R.,
Büdenbender, J., Boxhammer, T., Czerny, J., Engel, A., Ludwig, A., and
Meyerhöfer, M.: Phytoplankton blooms at increasing levels of atmospheric
carbon dioxide: Experimental evidence for negative effects on
prymnesiophytes and positive on small picoeukaryotes, Front. Mar. Sci., 4,
64, https://doi.org/10.3389/fmars.2017.00064, 2017.
Screen, J. A. and Simmonds, I.: The central role of diminishing sea ice in
recent Arctic temperature amplification, Nature, 464, 1334,
https://doi.org/10.1038/nature09051, 2010.
Shatwell, T., Nicklisch, A., and Köhler, J.: Temperature and photoperiod
effects on phytoplankton growing under simulated mixed layer light
fluctuations, Limnol. Oceanogr., 57, 541–553, https://doi.org/10.4319/lo.2012.57.2.0541,
2012.
Steinacher, M., Joos, F., Frölicher, T. L., Bopp, L., Cadule, P., Cocco, V., Doney, S. C., Gehlen, M., Lindsay, K., Moore, J. K., Schneider, B., and Segschneider, J.: Projected 21st century decrease in marine productivity: a multi-model analysis, Biogeosciences, 7, 979–1005, https://doi.org/10.5194/bg-7-979-2010, 2010.
Stoll, M., Bakker, K., Nobbe, G., and Haese, R.: Continuous-flow analysis of
dissolved inorganic carbon content in seawater, Anal. Chem., 73, 4111–4116,
https://doi.org/10.1021/ac010303r, 2001.
Su, W., Jakob, T., and Wilhelm, C.: The Impact of Nonphotochemical Quenching
of Fluorescence on the Photon Balance in Diatoms under Dynamic Light
Conditions, J. Phycol., 48, 336–346, https://doi.org/10.1111/j.1529-8817.2012.01128.x,
2012.
Suggett, D. J., Le Floc'H, E., Harris, G. N., Leonardos, N., and Geider, R.
J.: Different strategies of photoacclimation by two strains of Emiliania huxleyi (Haptophyta),
J. Phycol., 43, 1209–1222, https://doi.org/10.1111/j.1529-8817.2007.00406.x, 2007.
Talmy, D., Blackford, J., Hardman-Mountford, N. J., Dumbrell, A. J., and
Geider, R. J.: An optimality model of photoadaptation in contrasting aquatic
light regimes, Limnol. Oceanogr., 58, 1802–1818,
https://doi.org/10.4319/lo.2013.58.5.1802, 2013.
Tremblay, J.-É., Anderson, L. G., Matrai, P., Coupel, P., Bélanger,
S., Michel, C., and Reigstad, M.: Global and regional drivers of nutrient
supply, primary production and CO2 drawdown in the changing Arctic
Ocean, Prog. Oceanogr., 139, 171–196, https://doi.org/10.1016/j.pocean.2015.08.009,
2015.
Trenberth, K., Jones, P., Ambenje, P., Bojariu, R., Easterling, D., Klein
Tank, A., Parker, D., Rahimzadeh, F., Renwick, J., and Rusticucci, M.:
Observations: surface and atmospheric climate change, in: Climate Change
2007: The Physical Science Basis. Contribution of Working Group I to the
Fourth Assessment Report of the Intergovernmental Panel on Climate Change,
Cambridge University Press, 235–336, Cambridge, UK and NY, USA, 2007.
Trimborn, S., Thoms, S., Petrou, K., Kranz, S. A., and Rost, B.:
Photophysiological responses of Southern Ocean phytoplankton to changes in
CO2 concentrations: short-term versus acclimation effects, J. Exp. Mar.
Biol. Ecol., 451, 44–54, https://doi.org/10.1016/j.jembe.2013.11.001, 2014.
Uppström, L. R.: The boron/chlorinity ratio of deep-sea water from the
Pacific Ocean, Deep-Sea Res. Oceanogr. Abstr., 21, 161–162,
https://doi.org/10.1016/0011-7471(74)90074-6, 1974.
Van Leeuwe, M. and Stefels, J.: Photosynthetic responses in Phaeocystis
antarctica towards varying light and iron conditions, in: Phaeocystis, major link in
the biogeochemical cycling of climate-relevant elements, Springer, 61–70,
https://doi.org/10.1007/978-1-4020-6214-8_6, 2007.
Wagner, H., Jakob, T., and Wilhelm, C.: Balancing the energy flow from
captured light to biomass under fluctuating light conditions, New Phytol.,
169, 95–108, https://doi.org/10.1111/j.1469-8137.2005.01550.x, 2006.
Wassmann, P. and Reigstad, M.: Future Arctic Ocean seasonal ice zones and
implications for pelagic-benthic coupling, Oceanography, 24, 220–231,
https://doi.org/10.5670/oceanog.2011.74, 2011.
Webb, W. L., Newton, M., and Starr, D.: Carbon dioxide exchange of Alnus rubra: A
mathematical model, Oecologia, 17, 281–291, https://doi.org/10.1007/BF00345747, 1974.
White, E., Hoppe, C. J., and Rost, B.: The Arctic picoeukaryote Micromonas pusilla benefits from
Ocean Acidification under constant and dynamic light, PANGAEA,
https://doi.org/10.1594/PANGAEA.908691, 2019.
Worden, A. Z., Follows, M. J., Giovannoni, S. J., Wilken, S., Zimmerman, A.
E., and Keeling, P. J.: Rethinking the marine carbon cycle: factoring in the
multifarious lifestyles of microbes, Science, 347, 1257594,
https://doi.org/10.1126/science.1257594, 2015.
Xu, K., Grant-Burt, J. L., Donaher, N., and Campbell, D. A.: Connectivity among
Photosystem II centers in phytoplankters: Patterns and responses, BBA-Bioenergetics, 1858, 459–474,
https://doi.org/10.1016/j.bbabio.2017.03.003, 2017.
Short summary
The Arctic picoeukaryote Micromonas pusilla was acclimated to two pCO2 levels under a constant and a dynamic light, simulating more realistic light fields. M. pusilla was able to benefit from ocean acidification with an increase in growth rate, irrespective of the light regime. In dynamic light M. pusilla optimised its photophysiology for effective light usage during both low- and high-light periods. This highlights M. pusilla is likely to cope well with future conditions in the Arctic Ocean.
The Arctic picoeukaryote Micromonas pusilla was acclimated to two pCO2 levels under a constant...
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