The response of the marine nitrogen cycle to ocean acidification
Abstract Ocean acidification (OA), arising from the influx of anthropogenically generated carbon, poses a massive threat to the ocean ecosystems. Our knowledge of the effects of elevated anthropogenic CO 2 in marine waters and its effect on the performance of single species, trophic interactions, an...
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crwiley:10.1111/gcb.14424 2024-09-15T18:28:02+00:00 The response of the marine nitrogen cycle to ocean acidification Wannicke, Nicola Frey, Claudia Law, Cliff S. Voss, Maren National Institute of Water and Atmospheric Research Bundesministerium für Bildung und Forschung Ministry of Education 2018 http://dx.doi.org/10.1111/gcb.14424 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.14424 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.14424 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.14424 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 24, issue 11, page 5031-5043 ISSN 1354-1013 1365-2486 journal-article 2018 crwiley https://doi.org/10.1111/gcb.14424 2024-08-30T04:10:12Z Abstract Ocean acidification (OA), arising from the influx of anthropogenically generated carbon, poses a massive threat to the ocean ecosystems. Our knowledge of the effects of elevated anthropogenic CO 2 in marine waters and its effect on the performance of single species, trophic interactions, and ecosystems is increasing rapidly. However, our understanding of the biogeochemical cycling of nutrients such as nitrogen is less advanced and lacks a comprehensive overview of how these processes may change under OA. We conducted a systematic review and meta‐analysis of eight major nitrogen transformation processes incorporating 49 publications to synthesize current scientific understanding of the effect of OA on nitrogen cycling in the future ocean by 2100. The following points were identified by our meta‐analysis: (a) Diazotrophic nitrogen fixation is likely enhanced by 29% ± 4% under OA; (b) species‐ and strain‐specific responses of nitrogen fixers to OA were detectable, which may result in alterations in microbial community composition in the future ocean; (c) nitrification processes were reduced by a factor of 29% ± 10%; (d) declines in nitrification rates were not reflected by nitrifier abundance; and (e) contrasting results in unispecific culture experiments versus natural communities were apparent for nitrogen fixation and denitrification. The net effect of the nitrogen cycle process responses also suggests there may be a shift in the relative nitrogen pools, with excess ammonium originating from CO 2 ‐fertilized diazotrophs. This regenerated inorganic nitrogen may recycle in the upper water column increasing the relative importance of the ammonium‐fueled regenerated production. However, several feedback mechanisms with other chemical cycles, such as oxygen, and interaction with other climate change stressors may counteract these findings. Finally, our review highlights the shortcomings and gaps in current understanding of the potential changes in nitrogen cycling under future climate and emphasizes the need ... Article in Journal/Newspaper Ocean acidification Wiley Online Library Global Change Biology 24 11 5031 5043 |
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Wiley Online Library |
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English |
description |
Abstract Ocean acidification (OA), arising from the influx of anthropogenically generated carbon, poses a massive threat to the ocean ecosystems. Our knowledge of the effects of elevated anthropogenic CO 2 in marine waters and its effect on the performance of single species, trophic interactions, and ecosystems is increasing rapidly. However, our understanding of the biogeochemical cycling of nutrients such as nitrogen is less advanced and lacks a comprehensive overview of how these processes may change under OA. We conducted a systematic review and meta‐analysis of eight major nitrogen transformation processes incorporating 49 publications to synthesize current scientific understanding of the effect of OA on nitrogen cycling in the future ocean by 2100. The following points were identified by our meta‐analysis: (a) Diazotrophic nitrogen fixation is likely enhanced by 29% ± 4% under OA; (b) species‐ and strain‐specific responses of nitrogen fixers to OA were detectable, which may result in alterations in microbial community composition in the future ocean; (c) nitrification processes were reduced by a factor of 29% ± 10%; (d) declines in nitrification rates were not reflected by nitrifier abundance; and (e) contrasting results in unispecific culture experiments versus natural communities were apparent for nitrogen fixation and denitrification. The net effect of the nitrogen cycle process responses also suggests there may be a shift in the relative nitrogen pools, with excess ammonium originating from CO 2 ‐fertilized diazotrophs. This regenerated inorganic nitrogen may recycle in the upper water column increasing the relative importance of the ammonium‐fueled regenerated production. However, several feedback mechanisms with other chemical cycles, such as oxygen, and interaction with other climate change stressors may counteract these findings. Finally, our review highlights the shortcomings and gaps in current understanding of the potential changes in nitrogen cycling under future climate and emphasizes the need ... |
author2 |
National Institute of Water and Atmospheric Research Bundesministerium für Bildung und Forschung Ministry of Education |
format |
Article in Journal/Newspaper |
author |
Wannicke, Nicola Frey, Claudia Law, Cliff S. Voss, Maren |
spellingShingle |
Wannicke, Nicola Frey, Claudia Law, Cliff S. Voss, Maren The response of the marine nitrogen cycle to ocean acidification |
author_facet |
Wannicke, Nicola Frey, Claudia Law, Cliff S. Voss, Maren |
author_sort |
Wannicke, Nicola |
title |
The response of the marine nitrogen cycle to ocean acidification |
title_short |
The response of the marine nitrogen cycle to ocean acidification |
title_full |
The response of the marine nitrogen cycle to ocean acidification |
title_fullStr |
The response of the marine nitrogen cycle to ocean acidification |
title_full_unstemmed |
The response of the marine nitrogen cycle to ocean acidification |
title_sort |
response of the marine nitrogen cycle to ocean acidification |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/gcb.14424 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.14424 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.14424 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.14424 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Global Change Biology volume 24, issue 11, page 5031-5043 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/gcb.14424 |
container_title |
Global Change Biology |
container_volume |
24 |
container_issue |
11 |
container_start_page |
5031 |
op_container_end_page |
5043 |
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1810469335699816448 |