Environmental controls on pteropod biogeography along the Western Antarctic Peninsula
Abstract Pteropods are abundant zooplankton in the Western Antarctic Peninsula (WAP) and important grazers of phytoplankton and prey for higher trophic levels. We analyzed long‐term (1993–2017) trends in summer (January–February) abundance of WAP pteropods in relation to environmental controls (sea...
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crwiley:10.1002/lno.11041 2024-06-23T07:47:21+00:00 Environmental controls on pteropod biogeography along the Western Antarctic Peninsula Thibodeau, P. S. Steinberg, D. K. Stammerjohn, S. E. Hauri, C. National Science Foundation 2018 http://dx.doi.org/10.1002/lno.11041 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.11041 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11041 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11041 https://aslopubs.onlinelibrary.wiley.com/doi/am-pdf/10.1002/lno.11041 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11041 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 64, issue S1 ISSN 0024-3590 1939-5590 journal-article 2018 crwiley https://doi.org/10.1002/lno.11041 2024-06-06T04:23:49Z Abstract Pteropods are abundant zooplankton in the Western Antarctic Peninsula (WAP) and important grazers of phytoplankton and prey for higher trophic levels. We analyzed long‐term (1993–2017) trends in summer (January–February) abundance of WAP pteropods in relation to environmental controls (sea ice, sea surface temperature, climate indices, phytoplankton biomass and productivity, and carbonate chemistry) and interspecies dynamics using general linear models. There was no overall directional trend in abundance of thecosomes, Limacina helicina antarctica and Clio pyramidata, throughout the entire WAP, although L. antarctica abundance increased in the slope region and C. pyramidata abundance increased in the South. High L. antarctica abundance was strongly tied to a negative Multivariate El Niño Southern Oscillation Index the previous year. C. pyramidata abundance was best explained by early sea ice retreat 1‐yr prior. Abundance of the gymnosome species, Clione antarctica and Spongiobranchaea australis , increased over the time series, particularly in the slope region. Gymnosome abundance was positively influenced by abundance of their prey, L. antarctica, during the same season, and late sea ice advance 2‐yr prior. These trends indicate a shorter ice season promotes longer periods of open water in spring/summer favoring all pteropod species. Weak relationships were found between pteropod abundance and carbonate chemistry, and no long‐term trend in carbonate parameters was detected. These factors indicate ocean acidification is not presently influencing WAP pteropod abundance. Pteropods are responsive to the considerable environmental variability on both temporal and spatial scales—key for predicting future effects of climate change on regional carbon cycling and plankton trophic interactions. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Limacina helicina Ocean acidification Sea ice Wiley Online Library Antarctic Antarctic Peninsula Limnology and Oceanography 64 S1 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Pteropods are abundant zooplankton in the Western Antarctic Peninsula (WAP) and important grazers of phytoplankton and prey for higher trophic levels. We analyzed long‐term (1993–2017) trends in summer (January–February) abundance of WAP pteropods in relation to environmental controls (sea ice, sea surface temperature, climate indices, phytoplankton biomass and productivity, and carbonate chemistry) and interspecies dynamics using general linear models. There was no overall directional trend in abundance of thecosomes, Limacina helicina antarctica and Clio pyramidata, throughout the entire WAP, although L. antarctica abundance increased in the slope region and C. pyramidata abundance increased in the South. High L. antarctica abundance was strongly tied to a negative Multivariate El Niño Southern Oscillation Index the previous year. C. pyramidata abundance was best explained by early sea ice retreat 1‐yr prior. Abundance of the gymnosome species, Clione antarctica and Spongiobranchaea australis , increased over the time series, particularly in the slope region. Gymnosome abundance was positively influenced by abundance of their prey, L. antarctica, during the same season, and late sea ice advance 2‐yr prior. These trends indicate a shorter ice season promotes longer periods of open water in spring/summer favoring all pteropod species. Weak relationships were found between pteropod abundance and carbonate chemistry, and no long‐term trend in carbonate parameters was detected. These factors indicate ocean acidification is not presently influencing WAP pteropod abundance. Pteropods are responsive to the considerable environmental variability on both temporal and spatial scales—key for predicting future effects of climate change on regional carbon cycling and plankton trophic interactions. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Thibodeau, P. S. Steinberg, D. K. Stammerjohn, S. E. Hauri, C. |
spellingShingle |
Thibodeau, P. S. Steinberg, D. K. Stammerjohn, S. E. Hauri, C. Environmental controls on pteropod biogeography along the Western Antarctic Peninsula |
author_facet |
Thibodeau, P. S. Steinberg, D. K. Stammerjohn, S. E. Hauri, C. |
author_sort |
Thibodeau, P. S. |
title |
Environmental controls on pteropod biogeography along the Western Antarctic Peninsula |
title_short |
Environmental controls on pteropod biogeography along the Western Antarctic Peninsula |
title_full |
Environmental controls on pteropod biogeography along the Western Antarctic Peninsula |
title_fullStr |
Environmental controls on pteropod biogeography along the Western Antarctic Peninsula |
title_full_unstemmed |
Environmental controls on pteropod biogeography along the Western Antarctic Peninsula |
title_sort |
environmental controls on pteropod biogeography along the western antarctic peninsula |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1002/lno.11041 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Flno.11041 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11041 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11041 https://aslopubs.onlinelibrary.wiley.com/doi/am-pdf/10.1002/lno.11041 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11041 |
geographic |
Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Limacina helicina Ocean acidification Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Limacina helicina Ocean acidification Sea ice |
op_source |
Limnology and Oceanography volume 64, issue S1 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/lno.11041 |
container_title |
Limnology and Oceanography |
container_volume |
64 |
container_issue |
S1 |
_version_ |
1802651436409946112 |