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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ftunivtasmania:oai:eprints.utas.edu.au:30752 2023-05-15T17:34:42+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://eprints.utas.edu.au/30752/ https://eprints.utas.edu.au/30752/1/133669%20-%20Ocean%20acidification-induced%20restructuring%20of%20the%20plankton%20food%20web.pdf en eng Frontiers Research Foundation https://eprints.utas.edu.au/30752/1/133669%20-%20Ocean%20acidification-induced%20restructuring%20of%20the%20plankton%20food%20web.pdf Stange, P, Taucher, J, Bach, LT orcid:0000-0003-0202-3671 , Alguero-Muniz, M, Horn, HG, Krebs, L, Boxhammer, T, Nauendorf, AK and Riebesell, U 2018 , 'Ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles' , Frontiers in Marine Science, vol. 5 , pp. 1-13 , doi:10.3389/fmars.2018.00140 <http://dx.doi.org/10.3389/fmars.2018.00140>. biological carbon pump export ocean acidification plankton Article PeerReviewed 2018 ftunivtasmania https://doi.org/10.3389/fmars.2018.00140 2021-09-13T22:20:03Z 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 CO2 treatment levels (>800 μatm pCO2) subsequent to this bloom. We further observed significantly lower C:N and C:P ratios in post-bloom sedimented POM in the highest CO2 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 University of Tasmania: UTas ePrints Frontiers in Marine Science 5 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
biological carbon pump export ocean acidification plankton |
spellingShingle |
biological carbon pump export ocean acidification plankton 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 |
biological carbon pump export ocean acidification plankton |
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 CO2 treatment levels (>800 μatm pCO2) subsequent to this bloom. We further observed significantly lower C:N and C:P ratios in post-bloom sedimented POM in the highest CO2 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://eprints.utas.edu.au/30752/ https://eprints.utas.edu.au/30752/1/133669%20-%20Ocean%20acidification-induced%20restructuring%20of%20the%20plankton%20food%20web.pdf |
genre |
North Atlantic Ocean acidification |
genre_facet |
North Atlantic Ocean acidification |
op_relation |
https://eprints.utas.edu.au/30752/1/133669%20-%20Ocean%20acidification-induced%20restructuring%20of%20the%20plankton%20food%20web.pdf Stange, P, Taucher, J, Bach, LT orcid:0000-0003-0202-3671 , Alguero-Muniz, M, Horn, HG, Krebs, L, Boxhammer, T, Nauendorf, AK and Riebesell, U 2018 , 'Ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles' , Frontiers in Marine Science, vol. 5 , pp. 1-13 , doi:10.3389/fmars.2018.00140 <http://dx.doi.org/10.3389/fmars.2018.00140>. |
op_doi |
https://doi.org/10.3389/fmars.2018.00140 |
container_title |
Frontiers in Marine Science |
container_volume |
5 |
_version_ |
1766133609776807936 |