Image_5_Ocean Acidification-Induced Restructuring of the Plankton Food Web Can Influence the Degradation of Sinking Particles.PDF
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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ftfrontimediafig:oai:figshare.com:article/6180254 2023-05-15T17:35:24+02:00 Image_5_Ocean Acidification-Induced Restructuring of the Plankton Food Web Can Influence the Degradation of Sinking Particles.PDF Paul Stange Jan Taucher Lennart T. Bach María Algueró-Muñiz Henriette G. Horn Luana Krebs Tim Boxhammer Alice K. Nauendorf Ulf Riebesell 2018-04-25T04:18:06Z https://doi.org/10.3389/fmars.2018.00140.s005 https://figshare.com/articles/Image_5_Ocean_Acidification-Induced_Restructuring_of_the_Plankton_Food_Web_Can_Influence_the_Degradation_of_Sinking_Particles_PDF/6180254 unknown doi:10.3389/fmars.2018.00140.s005 https://figshare.com/articles/Image_5_Ocean_Acidification-Induced_Restructuring_of_the_Plankton_Food_Web_Can_Influence_the_Degradation_of_Sinking_Particles_PDF/6180254 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering sinking particles degradation elemental stoichiometry plankton food-webs ocean acidification zooplankton Image Figure 2018 ftfrontimediafig https://doi.org/10.3389/fmars.2018.00140.s005 2018-04-25T22:56:26Z 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 pCO 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. Still Image North Atlantic Ocean acidification Frontiers: Figshare |
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Open Polar |
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Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering sinking particles degradation elemental stoichiometry plankton food-webs ocean acidification zooplankton |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering sinking particles degradation elemental stoichiometry plankton food-webs ocean acidification zooplankton Paul Stange Jan Taucher Lennart T. Bach María Algueró-Muñiz Henriette G. Horn Luana Krebs Tim Boxhammer Alice K. Nauendorf Ulf Riebesell Image_5_Ocean Acidification-Induced Restructuring of the Plankton Food Web Can Influence the Degradation of Sinking Particles.PDF |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering sinking particles degradation elemental stoichiometry plankton food-webs ocean acidification zooplankton |
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 pCO 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 |
Still Image |
author |
Paul Stange Jan Taucher Lennart T. Bach María Algueró-Muñiz Henriette G. Horn Luana Krebs Tim Boxhammer Alice K. Nauendorf Ulf Riebesell |
author_facet |
Paul Stange Jan Taucher Lennart T. Bach María Algueró-Muñiz Henriette G. Horn Luana Krebs Tim Boxhammer Alice K. Nauendorf Ulf Riebesell |
author_sort |
Paul Stange |
title |
Image_5_Ocean Acidification-Induced Restructuring of the Plankton Food Web Can Influence the Degradation of Sinking Particles.PDF |
title_short |
Image_5_Ocean Acidification-Induced Restructuring of the Plankton Food Web Can Influence the Degradation of Sinking Particles.PDF |
title_full |
Image_5_Ocean Acidification-Induced Restructuring of the Plankton Food Web Can Influence the Degradation of Sinking Particles.PDF |
title_fullStr |
Image_5_Ocean Acidification-Induced Restructuring of the Plankton Food Web Can Influence the Degradation of Sinking Particles.PDF |
title_full_unstemmed |
Image_5_Ocean Acidification-Induced Restructuring of the Plankton Food Web Can Influence the Degradation of Sinking Particles.PDF |
title_sort |
image_5_ocean acidification-induced restructuring of the plankton food web can influence the degradation of sinking particles.pdf |
publishDate |
2018 |
url |
https://doi.org/10.3389/fmars.2018.00140.s005 https://figshare.com/articles/Image_5_Ocean_Acidification-Induced_Restructuring_of_the_Plankton_Food_Web_Can_Influence_the_Degradation_of_Sinking_Particles_PDF/6180254 |
genre |
North Atlantic Ocean acidification |
genre_facet |
North Atlantic Ocean acidification |
op_relation |
doi:10.3389/fmars.2018.00140.s005 https://figshare.com/articles/Image_5_Ocean_Acidification-Induced_Restructuring_of_the_Plankton_Food_Web_Can_Influence_the_Degradation_of_Sinking_Particles_PDF/6180254 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2018.00140.s005 |
_version_ |
1766134553076826112 |