Ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles
Ocean acidification (OA) is expected to alter plankton community structure in the future ocean. This, in turn, could change the composition of sinking organic matter and the efficiency of the biological carbon pump. So far, most OA experiments involving entire plankton communities have been conducte...
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ftunivtasecite:oai:ecite.utas.edu.au:133669 2023-05-15T17:34:56+02:00 Ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles Stange, P Taucher, J Bach, LT Alguero-Muniz, M Horn, HG Krebs, L Boxhammer, T Nauendorf, AK Riebesell, U 2018 application/pdf https://doi.org/10.3389/fmars.2018.00140 http://ecite.utas.edu.au/133669 en eng Frontiers Research Foundation http://ecite.utas.edu.au/133669/1/133669 - Ocean acidification-induced restructuring of the plankton food web.pdf http://dx.doi.org/10.3389/fmars.2018.00140 Stange, P and Taucher, J and Bach, LT and Alguero-Muniz, M and Horn, HG and Krebs, L and Boxhammer, T and Nauendorf, AK and Riebesell, U, Ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles, Frontiers in Marine Science, 5 Article 140. ISSN 2296-7745 (2018) [Refereed Article] http://ecite.utas.edu.au/133669 Earth Sciences Oceanography Biological Oceanography Refereed Article PeerReviewed 2018 ftunivtasecite https://doi.org/10.3389/fmars.2018.00140 2019-12-13T22:31:25Z Ocean acidification (OA) is expected to alter plankton community structure in the future ocean. This, in turn, could change the composition of sinking organic matter and the efficiency of the biological carbon pump. So far, most OA experiments involving entire plankton communities have been conducted in meso- to eutrophic environments. However, recent studies suggest that OA effects may be more pronounced during prolonged periods of nutrient limitation. In this study, we investigated how OA-induced changes in low-nutrient adapted plankton communities of the subtropical North Atlantic Ocean may affect particulate organic matter (POM) standing stocks, POM fluxes, and POM stoichiometry. More specifically, we compared the elemental composition of POM suspended in the water column to the corresponding sinking material collected in sediment traps. Three weeks into the experiment, we simulated a natural upwelling event by adding nutrient-rich deep-water to all mesocosms, which induced a diatom-dominated phytoplankton bloom. Our results show that POM was more efficiently retained in the water column in the highest CO 2 treatment levels (>800 μatm p CO 2 ) subsequent to this bloom. We further observed significantly lower C:N and C:P ratios in post-bloom sedimented POM in the highest CO 2 treatments, suggesting that degradation processes were less pronounced. This trend is most likely explained by differences in micro- and mesozooplankton abundance during the bloom and post-bloom phase. Overall, this study shows that OA can indirectly alter POM fluxes and stoichiometry in subtropical environments through changes in plankton community structure. Article in Journal/Newspaper North Atlantic Ocean acidification eCite UTAS (University of Tasmania) Frontiers in Marine Science 5 |
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Open Polar |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Biological Oceanography |
spellingShingle |
Earth Sciences Oceanography Biological Oceanography Stange, P Taucher, J Bach, LT Alguero-Muniz, M Horn, HG Krebs, L Boxhammer, T Nauendorf, AK Riebesell, U Ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles |
topic_facet |
Earth Sciences Oceanography Biological Oceanography |
description |
Ocean acidification (OA) is expected to alter plankton community structure in the future ocean. This, in turn, could change the composition of sinking organic matter and the efficiency of the biological carbon pump. So far, most OA experiments involving entire plankton communities have been conducted in meso- to eutrophic environments. However, recent studies suggest that OA effects may be more pronounced during prolonged periods of nutrient limitation. In this study, we investigated how OA-induced changes in low-nutrient adapted plankton communities of the subtropical North Atlantic Ocean may affect particulate organic matter (POM) standing stocks, POM fluxes, and POM stoichiometry. More specifically, we compared the elemental composition of POM suspended in the water column to the corresponding sinking material collected in sediment traps. Three weeks into the experiment, we simulated a natural upwelling event by adding nutrient-rich deep-water to all mesocosms, which induced a diatom-dominated phytoplankton bloom. Our results show that POM was more efficiently retained in the water column in the highest CO 2 treatment levels (>800 μatm p CO 2 ) subsequent to this bloom. We further observed significantly lower C:N and C:P ratios in post-bloom sedimented POM in the highest CO 2 treatments, suggesting that degradation processes were less pronounced. This trend is most likely explained by differences in micro- and mesozooplankton abundance during the bloom and post-bloom phase. Overall, this study shows that OA can indirectly alter POM fluxes and stoichiometry in subtropical environments through changes in plankton community structure. |
format |
Article in Journal/Newspaper |
author |
Stange, P Taucher, J Bach, LT Alguero-Muniz, M Horn, HG Krebs, L Boxhammer, T Nauendorf, AK Riebesell, U |
author_facet |
Stange, P Taucher, J Bach, LT Alguero-Muniz, M Horn, HG Krebs, L Boxhammer, T Nauendorf, AK Riebesell, U |
author_sort |
Stange, P |
title |
Ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles |
title_short |
Ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles |
title_full |
Ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles |
title_fullStr |
Ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles |
title_full_unstemmed |
Ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles |
title_sort |
ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles |
publisher |
Frontiers Research Foundation |
publishDate |
2018 |
url |
https://doi.org/10.3389/fmars.2018.00140 http://ecite.utas.edu.au/133669 |
genre |
North Atlantic Ocean acidification |
genre_facet |
North Atlantic Ocean acidification |
op_relation |
http://ecite.utas.edu.au/133669/1/133669 - Ocean acidification-induced restructuring of the plankton food web.pdf http://dx.doi.org/10.3389/fmars.2018.00140 Stange, P and Taucher, J and Bach, LT and Alguero-Muniz, M and Horn, HG and Krebs, L and Boxhammer, T and Nauendorf, AK and Riebesell, U, Ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles, Frontiers in Marine Science, 5 Article 140. ISSN 2296-7745 (2018) [Refereed Article] http://ecite.utas.edu.au/133669 |
op_doi |
https://doi.org/10.3389/fmars.2018.00140 |
container_title |
Frontiers in Marine Science |
container_volume |
5 |
_version_ |
1766133926560006144 |