Decline in plankton diversity and carbon flux with reduced sea ice extent along the Western Antarctic Peninsula
Since the middle of the past century, the Western Antarctic Peninsula has warmed rapidly with a significant loss of sea ice but the impacts on plankton biodiversity and carbon cycling remain an open question. Here, using a 5-year dataset of eukaryotic plankton DNA metabarcoding, we assess changes in...
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Nature Research
2021
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ftcarolinadr:cdr.lib.unc.edu:bv73c870f 2023-10-01T03:51:02+02:00 Decline in plankton diversity and carbon flux with reduced sea ice extent along the Western Antarctic Peninsula Lin, Y. Moreno, C. Marchetti, A. Ducklow, H. Schofield, O. Delage, E. Meredith, M. Li, Z. Eveillard, D. Chaffron, S. Cassar, N. College of Arts and Sciences, Department of Marine Sciences 2021 https://doi.org/10.17615/cjd3-dj21 https://cdr.lib.unc.edu/downloads/4f16cc446?file=thumbnail https://cdr.lib.unc.edu/downloads/4f16cc446 English eng Nature Research https://doi.org/10.17615/cjd3-dj21 https://cdr.lib.unc.edu/downloads/4f16cc446?file=thumbnail https://cdr.lib.unc.edu/downloads/4f16cc446 http://rightsstatements.org/vocab/InC/1.0/ Nature Communications, 12(1) Carbon Cycle Microbiota Carbon Dinophyceae Biodiversity Ecosystem Ice Cover Eukaryota West Antarctica Antarctica Temperature Antarctic Regions Antarctic Peninsula Diatoms Plankton Bacillariophyta Article 2021 ftcarolinadr https://doi.org/10.17615/cjd3-dj21 2023-09-02T22:30:57Z Since the middle of the past century, the Western Antarctic Peninsula has warmed rapidly with a significant loss of sea ice but the impacts on plankton biodiversity and carbon cycling remain an open question. Here, using a 5-year dataset of eukaryotic plankton DNA metabarcoding, we assess changes in biodiversity and net community production in this region. Our results show that sea-ice extent is a dominant factor influencing eukaryotic plankton community composition, biodiversity, and net community production. Species richness and evenness decline with an increase in sea surface temperature (SST). In regions with low SST and shallow mixed layers, the community was dominated by a diverse assemblage of diatoms and dinoflagellates. Conversely, less diverse plankton assemblages were observed in waters with higher SST and/or deep mixed layers when sea ice extent was lower. A genetic programming machine-learning model explained up to 80% of the net community production variability at the Western Antarctic Peninsula. Among the biological explanatory variables, the sea-ice environment associated plankton assemblage is the best predictor of net community production. We conclude that eukaryotic plankton diversity and carbon cycling at the Western Antarctic Peninsula are strongly linked to sea-ice conditions. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice West Antarctica Carolina Digital Repository (UNC - University of North Carolina) Antarctic Antarctic Peninsula West Antarctica |
institution |
Open Polar |
collection |
Carolina Digital Repository (UNC - University of North Carolina) |
op_collection_id |
ftcarolinadr |
language |
English |
topic |
Carbon Cycle Microbiota Carbon Dinophyceae Biodiversity Ecosystem Ice Cover Eukaryota West Antarctica Antarctica Temperature Antarctic Regions Antarctic Peninsula Diatoms Plankton Bacillariophyta |
spellingShingle |
Carbon Cycle Microbiota Carbon Dinophyceae Biodiversity Ecosystem Ice Cover Eukaryota West Antarctica Antarctica Temperature Antarctic Regions Antarctic Peninsula Diatoms Plankton Bacillariophyta Lin, Y. Moreno, C. Marchetti, A. Ducklow, H. Schofield, O. Delage, E. Meredith, M. Li, Z. Eveillard, D. Chaffron, S. Cassar, N. Decline in plankton diversity and carbon flux with reduced sea ice extent along the Western Antarctic Peninsula |
topic_facet |
Carbon Cycle Microbiota Carbon Dinophyceae Biodiversity Ecosystem Ice Cover Eukaryota West Antarctica Antarctica Temperature Antarctic Regions Antarctic Peninsula Diatoms Plankton Bacillariophyta |
description |
Since the middle of the past century, the Western Antarctic Peninsula has warmed rapidly with a significant loss of sea ice but the impacts on plankton biodiversity and carbon cycling remain an open question. Here, using a 5-year dataset of eukaryotic plankton DNA metabarcoding, we assess changes in biodiversity and net community production in this region. Our results show that sea-ice extent is a dominant factor influencing eukaryotic plankton community composition, biodiversity, and net community production. Species richness and evenness decline with an increase in sea surface temperature (SST). In regions with low SST and shallow mixed layers, the community was dominated by a diverse assemblage of diatoms and dinoflagellates. Conversely, less diverse plankton assemblages were observed in waters with higher SST and/or deep mixed layers when sea ice extent was lower. A genetic programming machine-learning model explained up to 80% of the net community production variability at the Western Antarctic Peninsula. Among the biological explanatory variables, the sea-ice environment associated plankton assemblage is the best predictor of net community production. We conclude that eukaryotic plankton diversity and carbon cycling at the Western Antarctic Peninsula are strongly linked to sea-ice conditions. |
author2 |
College of Arts and Sciences, Department of Marine Sciences |
format |
Article in Journal/Newspaper |
author |
Lin, Y. Moreno, C. Marchetti, A. Ducklow, H. Schofield, O. Delage, E. Meredith, M. Li, Z. Eveillard, D. Chaffron, S. Cassar, N. |
author_facet |
Lin, Y. Moreno, C. Marchetti, A. Ducklow, H. Schofield, O. Delage, E. Meredith, M. Li, Z. Eveillard, D. Chaffron, S. Cassar, N. |
author_sort |
Lin, Y. |
title |
Decline in plankton diversity and carbon flux with reduced sea ice extent along the Western Antarctic Peninsula |
title_short |
Decline in plankton diversity and carbon flux with reduced sea ice extent along the Western Antarctic Peninsula |
title_full |
Decline in plankton diversity and carbon flux with reduced sea ice extent along the Western Antarctic Peninsula |
title_fullStr |
Decline in plankton diversity and carbon flux with reduced sea ice extent along the Western Antarctic Peninsula |
title_full_unstemmed |
Decline in plankton diversity and carbon flux with reduced sea ice extent along the Western Antarctic Peninsula |
title_sort |
decline in plankton diversity and carbon flux with reduced sea ice extent along the western antarctic peninsula |
publisher |
Nature Research |
publishDate |
2021 |
url |
https://doi.org/10.17615/cjd3-dj21 https://cdr.lib.unc.edu/downloads/4f16cc446?file=thumbnail https://cdr.lib.unc.edu/downloads/4f16cc446 |
geographic |
Antarctic Antarctic Peninsula West Antarctica |
geographic_facet |
Antarctic Antarctic Peninsula West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice West Antarctica |
op_source |
Nature Communications, 12(1) |
op_relation |
https://doi.org/10.17615/cjd3-dj21 https://cdr.lib.unc.edu/downloads/4f16cc446?file=thumbnail https://cdr.lib.unc.edu/downloads/4f16cc446 |
op_rights |
http://rightsstatements.org/vocab/InC/1.0/ |
op_doi |
https://doi.org/10.17615/cjd3-dj21 |
_version_ |
1778530774803283968 |