Krill vs salps: dominance shift from krill to salps is associated with higher dissolved N:P ratios
Pronounced atmospheric and oceanic warming along the West Antarctic Peninsula (WAP) has resulted in abundance shifts in populations of Antarctic krill and Salpa thompsoni determined by changes in the timing of sea-ice advance, the duration of sea-ice cover and food availability. Krill and salps repr...
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ftpubmed:oai:pubmedcentral.nih.gov:7125175 2023-05-15T13:33:04+02:00 Krill vs salps: dominance shift from krill to salps is associated with higher dissolved N:P ratios Plum, Christoph Hillebrand, Helmut Moorthi, Stefanie 2020-04-03 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7125175/ http://www.ncbi.nlm.nih.gov/pubmed/32246093 https://doi.org/10.1038/s41598-020-62829-8 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7125175/ http://www.ncbi.nlm.nih.gov/pubmed/32246093 http://dx.doi.org/10.1038/s41598-020-62829-8 © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2020 ftpubmed https://doi.org/10.1038/s41598-020-62829-8 2020-04-12T00:39:08Z Pronounced atmospheric and oceanic warming along the West Antarctic Peninsula (WAP) has resulted in abundance shifts in populations of Antarctic krill and Salpa thompsoni determined by changes in the timing of sea-ice advance, the duration of sea-ice cover and food availability. Krill and salps represent the most important macrozooplankton grazers at the WAP, but differ profoundly in their feeding biology, population dynamics and stoichiometry of excretion products with potential consequences for the relative availability of dissolved nitrogen and phosphorus. Alternation of the dissolved nutrient pool due to shifts in krill and salp densities have been hypothesized but never explicitly tested by using observational data. We therefore used the Palmer LTER dataset in order to investigate whether the dominance of either grazer is related with the observed dissolved nitrogen:phosphorus (N:P) ratios at the WAP. Across the whole sampling grid, the dominance of salps over krill was significantly correlated to higher concentrations of both N and P as well as a higher N:P ratios. Using actual long-term data, our study shows for the first time that changes in key grazer dominance may have consequences for the dynamics of dissolved nitrogen and phosphorus at the WAP. Text Antarc* Antarctic Antarctic Krill Antarctic Peninsula Sea ice PubMed Central (PMC) Antarctic Antarctic Peninsula Scientific Reports 10 1 |
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Article Plum, Christoph Hillebrand, Helmut Moorthi, Stefanie Krill vs salps: dominance shift from krill to salps is associated with higher dissolved N:P ratios |
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Article |
description |
Pronounced atmospheric and oceanic warming along the West Antarctic Peninsula (WAP) has resulted in abundance shifts in populations of Antarctic krill and Salpa thompsoni determined by changes in the timing of sea-ice advance, the duration of sea-ice cover and food availability. Krill and salps represent the most important macrozooplankton grazers at the WAP, but differ profoundly in their feeding biology, population dynamics and stoichiometry of excretion products with potential consequences for the relative availability of dissolved nitrogen and phosphorus. Alternation of the dissolved nutrient pool due to shifts in krill and salp densities have been hypothesized but never explicitly tested by using observational data. We therefore used the Palmer LTER dataset in order to investigate whether the dominance of either grazer is related with the observed dissolved nitrogen:phosphorus (N:P) ratios at the WAP. Across the whole sampling grid, the dominance of salps over krill was significantly correlated to higher concentrations of both N and P as well as a higher N:P ratios. Using actual long-term data, our study shows for the first time that changes in key grazer dominance may have consequences for the dynamics of dissolved nitrogen and phosphorus at the WAP. |
format |
Text |
author |
Plum, Christoph Hillebrand, Helmut Moorthi, Stefanie |
author_facet |
Plum, Christoph Hillebrand, Helmut Moorthi, Stefanie |
author_sort |
Plum, Christoph |
title |
Krill vs salps: dominance shift from krill to salps is associated with higher dissolved N:P ratios |
title_short |
Krill vs salps: dominance shift from krill to salps is associated with higher dissolved N:P ratios |
title_full |
Krill vs salps: dominance shift from krill to salps is associated with higher dissolved N:P ratios |
title_fullStr |
Krill vs salps: dominance shift from krill to salps is associated with higher dissolved N:P ratios |
title_full_unstemmed |
Krill vs salps: dominance shift from krill to salps is associated with higher dissolved N:P ratios |
title_sort |
krill vs salps: dominance shift from krill to salps is associated with higher dissolved n:p ratios |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7125175/ http://www.ncbi.nlm.nih.gov/pubmed/32246093 https://doi.org/10.1038/s41598-020-62829-8 |
geographic |
Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Sea ice |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7125175/ http://www.ncbi.nlm.nih.gov/pubmed/32246093 http://dx.doi.org/10.1038/s41598-020-62829-8 |
op_rights |
© The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-020-62829-8 |
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Scientific Reports |
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