Enhanced transfer of organic matter to higher trophic levels caused by ocean acidification and its implications for export production: A mass balance approach.
Ongoing acidification of the ocean through uptake of anthropogenic CO2 is known to affect marine biota and ecosystems with largely unknown consequences for marine food webs. Changes in food web structure have the potential to alter trophic transfer, partitioning, and biogeochemical cycling of elemen...
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ftdoajarticles:oai:doaj.org/article:068a8ded866e4740b716361b3551c2ee 2023-05-15T17:50:51+02:00 Enhanced transfer of organic matter to higher trophic levels caused by ocean acidification and its implications for export production: A mass balance approach. Tim Boxhammer Jan Taucher Lennart T Bach Eric P Achterberg María Algueró-Muñiz Jessica Bellworthy Jan Czerny Mario Esposito Mathias Haunost Dana Hellemann Andrea Ludwig Jaw C Yong Maren Zark Ulf Riebesell Leif G Anderson 2018-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0197502 https://doaj.org/article/068a8ded866e4740b716361b3551c2ee EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC5969766?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0197502 https://doaj.org/article/068a8ded866e4740b716361b3551c2ee PLoS ONE, Vol 13, Iss 5, p e0197502 (2018) Medicine R Science Q article 2018 ftdoajarticles https://doi.org/10.1371/journal.pone.0197502 2022-12-31T03:01:51Z Ongoing acidification of the ocean through uptake of anthropogenic CO2 is known to affect marine biota and ecosystems with largely unknown consequences for marine food webs. Changes in food web structure have the potential to alter trophic transfer, partitioning, and biogeochemical cycling of elements in the ocean. Here we investigated the impact of realistic end-of-the-century CO2 concentrations on the development and partitioning of the carbon, nitrogen, phosphorus, and silica pools in a coastal pelagic ecosystem (Gullmar Fjord, Sweden). We covered the entire winter-to-summer plankton succession (100 days) in two sets of five pelagic mesocosms, with one set being CO2 enriched (~760 μatm pCO2) and the other one left at ambient CO2 concentrations. Elemental mass balances were calculated and we highlight important challenges and uncertainties we have faced in the closed mesocosm system. Our key observations under high CO2 were: (1) A significantly amplified transfer of carbon, nitrogen, and phosphorus from primary producers to higher trophic levels, during times of regenerated primary production. (2) A prolonged retention of all three elements in the pelagic food web that significantly reduced nitrogen and phosphorus sedimentation by about 11 and 9%, respectively. (3) A positive trend in carbon fixation (relative to nitrogen) that appeared in the particulate matter pool as well as the downward particle flux. This excess carbon counteracted a potential reduction in carbon sedimentation that could have been expected from patterns of nitrogen and phosphorus fluxes. Our findings highlight the potential for ocean acidification to alter partitioning and cycling of carbon and nutrients in the surface ocean but also show that impacts are temporarily variable and likely depending upon the structure of the plankton food web. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles PLOS ONE 13 5 e0197502 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Tim Boxhammer Jan Taucher Lennart T Bach Eric P Achterberg María Algueró-Muñiz Jessica Bellworthy Jan Czerny Mario Esposito Mathias Haunost Dana Hellemann Andrea Ludwig Jaw C Yong Maren Zark Ulf Riebesell Leif G Anderson Enhanced transfer of organic matter to higher trophic levels caused by ocean acidification and its implications for export production: A mass balance approach. |
topic_facet |
Medicine R Science Q |
description |
Ongoing acidification of the ocean through uptake of anthropogenic CO2 is known to affect marine biota and ecosystems with largely unknown consequences for marine food webs. Changes in food web structure have the potential to alter trophic transfer, partitioning, and biogeochemical cycling of elements in the ocean. Here we investigated the impact of realistic end-of-the-century CO2 concentrations on the development and partitioning of the carbon, nitrogen, phosphorus, and silica pools in a coastal pelagic ecosystem (Gullmar Fjord, Sweden). We covered the entire winter-to-summer plankton succession (100 days) in two sets of five pelagic mesocosms, with one set being CO2 enriched (~760 μatm pCO2) and the other one left at ambient CO2 concentrations. Elemental mass balances were calculated and we highlight important challenges and uncertainties we have faced in the closed mesocosm system. Our key observations under high CO2 were: (1) A significantly amplified transfer of carbon, nitrogen, and phosphorus from primary producers to higher trophic levels, during times of regenerated primary production. (2) A prolonged retention of all three elements in the pelagic food web that significantly reduced nitrogen and phosphorus sedimentation by about 11 and 9%, respectively. (3) A positive trend in carbon fixation (relative to nitrogen) that appeared in the particulate matter pool as well as the downward particle flux. This excess carbon counteracted a potential reduction in carbon sedimentation that could have been expected from patterns of nitrogen and phosphorus fluxes. Our findings highlight the potential for ocean acidification to alter partitioning and cycling of carbon and nutrients in the surface ocean but also show that impacts are temporarily variable and likely depending upon the structure of the plankton food web. |
format |
Article in Journal/Newspaper |
author |
Tim Boxhammer Jan Taucher Lennart T Bach Eric P Achterberg María Algueró-Muñiz Jessica Bellworthy Jan Czerny Mario Esposito Mathias Haunost Dana Hellemann Andrea Ludwig Jaw C Yong Maren Zark Ulf Riebesell Leif G Anderson |
author_facet |
Tim Boxhammer Jan Taucher Lennart T Bach Eric P Achterberg María Algueró-Muñiz Jessica Bellworthy Jan Czerny Mario Esposito Mathias Haunost Dana Hellemann Andrea Ludwig Jaw C Yong Maren Zark Ulf Riebesell Leif G Anderson |
author_sort |
Tim Boxhammer |
title |
Enhanced transfer of organic matter to higher trophic levels caused by ocean acidification and its implications for export production: A mass balance approach. |
title_short |
Enhanced transfer of organic matter to higher trophic levels caused by ocean acidification and its implications for export production: A mass balance approach. |
title_full |
Enhanced transfer of organic matter to higher trophic levels caused by ocean acidification and its implications for export production: A mass balance approach. |
title_fullStr |
Enhanced transfer of organic matter to higher trophic levels caused by ocean acidification and its implications for export production: A mass balance approach. |
title_full_unstemmed |
Enhanced transfer of organic matter to higher trophic levels caused by ocean acidification and its implications for export production: A mass balance approach. |
title_sort |
enhanced transfer of organic matter to higher trophic levels caused by ocean acidification and its implications for export production: a mass balance approach. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2018 |
url |
https://doi.org/10.1371/journal.pone.0197502 https://doaj.org/article/068a8ded866e4740b716361b3551c2ee |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
PLoS ONE, Vol 13, Iss 5, p e0197502 (2018) |
op_relation |
http://europepmc.org/articles/PMC5969766?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0197502 https://doaj.org/article/068a8ded866e4740b716361b3551c2ee |
op_doi |
https://doi.org/10.1371/journal.pone.0197502 |
container_title |
PLOS ONE |
container_volume |
13 |
container_issue |
5 |
container_start_page |
e0197502 |
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1766157761490452480 |