Recurrent seascape units identify key ecological processes along the western Antarctic Peninsula
Abstract The western Antarctic Peninsula ( WAP ) is a bellwether of global climate change and natural laboratory for identifying interactions between climate and ecosystems. The Palmer Long‐Term Ecological Research ( LTER ) project has collected data on key ecological and environmental processes alo...
Published in: | Global Change Biology |
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crwiley:10.1111/gcb.14161 2024-06-02T07:58:22+00:00 Recurrent seascape units identify key ecological processes along the western Antarctic Peninsula Bowman, Jeff S. Kavanaugh, Maria T. Doney, Scott C. Ducklow, Hugh W. National Aeronautics and Space Administration Office of Polar Programs 2018 http://dx.doi.org/10.1111/gcb.14161 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.14161 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.14161 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.14161 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/gcb.14161 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 24, issue 7, page 3065-3078 ISSN 1354-1013 1365-2486 journal-article 2018 crwiley https://doi.org/10.1111/gcb.14161 2024-05-03T11:51:26Z Abstract The western Antarctic Peninsula ( WAP ) is a bellwether of global climate change and natural laboratory for identifying interactions between climate and ecosystems. The Palmer Long‐Term Ecological Research ( LTER ) project has collected data on key ecological and environmental processes along the WAP since 1993. To better understand how key ecological parameters are changing across space and time, we developed a novel seascape classification approach based on in situ temperature, salinity, chlorophyll a , nitrate + nitrite, phosphate, and silicate. We anticipate that this approach will be broadly applicable to other geographical areas. Through the application of self‐organizing maps ( SOM s), we identified eight recurrent seascape units (SUs) in these data. These SUs have strong fidelity to known regional water masses but with an additional layer of biogeochemical detail, allowing us to identify multiple distinct nutrient profiles in several water masses. To identify the temporal and spatial distribution of these SUs, we mapped them across the Palmer LTER sampling grid via objective mapping of the original parameters. Analysis of the abundance and distribution of SUs since 1993 suggests two year types characterized by the partitioning of chlorophyll a into SUs with different spatial characteristics. By developing generalized linear models for correlated, time‐lagged external drivers, we conclude that early spring sea ice conditions exert a strong influence on the distribution of chlorophyll a and nutrients along the WAP , but not necessarily the total chlorophyll a inventory. Because the distribution and density of phytoplankton biomass can have an impact on biomass transfer to the upper trophic levels, these results highlight anticipated links between the WAP marine ecosystem and climate. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Sea ice Wiley Online Library Antarctic Antarctic Peninsula Global Change Biology 24 7 3065 3078 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The western Antarctic Peninsula ( WAP ) is a bellwether of global climate change and natural laboratory for identifying interactions between climate and ecosystems. The Palmer Long‐Term Ecological Research ( LTER ) project has collected data on key ecological and environmental processes along the WAP since 1993. To better understand how key ecological parameters are changing across space and time, we developed a novel seascape classification approach based on in situ temperature, salinity, chlorophyll a , nitrate + nitrite, phosphate, and silicate. We anticipate that this approach will be broadly applicable to other geographical areas. Through the application of self‐organizing maps ( SOM s), we identified eight recurrent seascape units (SUs) in these data. These SUs have strong fidelity to known regional water masses but with an additional layer of biogeochemical detail, allowing us to identify multiple distinct nutrient profiles in several water masses. To identify the temporal and spatial distribution of these SUs, we mapped them across the Palmer LTER sampling grid via objective mapping of the original parameters. Analysis of the abundance and distribution of SUs since 1993 suggests two year types characterized by the partitioning of chlorophyll a into SUs with different spatial characteristics. By developing generalized linear models for correlated, time‐lagged external drivers, we conclude that early spring sea ice conditions exert a strong influence on the distribution of chlorophyll a and nutrients along the WAP , but not necessarily the total chlorophyll a inventory. Because the distribution and density of phytoplankton biomass can have an impact on biomass transfer to the upper trophic levels, these results highlight anticipated links between the WAP marine ecosystem and climate. |
author2 |
National Aeronautics and Space Administration Office of Polar Programs |
format |
Article in Journal/Newspaper |
author |
Bowman, Jeff S. Kavanaugh, Maria T. Doney, Scott C. Ducklow, Hugh W. |
spellingShingle |
Bowman, Jeff S. Kavanaugh, Maria T. Doney, Scott C. Ducklow, Hugh W. Recurrent seascape units identify key ecological processes along the western Antarctic Peninsula |
author_facet |
Bowman, Jeff S. Kavanaugh, Maria T. Doney, Scott C. Ducklow, Hugh W. |
author_sort |
Bowman, Jeff S. |
title |
Recurrent seascape units identify key ecological processes along the western Antarctic Peninsula |
title_short |
Recurrent seascape units identify key ecological processes along the western Antarctic Peninsula |
title_full |
Recurrent seascape units identify key ecological processes along the western Antarctic Peninsula |
title_fullStr |
Recurrent seascape units identify key ecological processes along the western Antarctic Peninsula |
title_full_unstemmed |
Recurrent seascape units identify key ecological processes along the western Antarctic Peninsula |
title_sort |
recurrent seascape units identify key ecological processes along the western antarctic peninsula |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/gcb.14161 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.14161 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.14161 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.14161 https://onlinelibrary.wiley.com/doi/am-pdf/10.1111/gcb.14161 |
geographic |
Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Sea ice |
op_source |
Global Change Biology volume 24, issue 7, page 3065-3078 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/gcb.14161 |
container_title |
Global Change Biology |
container_volume |
24 |
container_issue |
7 |
container_start_page |
3065 |
op_container_end_page |
3078 |
_version_ |
1800741687565221888 |