Data from: Early spring phytoplankton dynamics in the western Antarctic Peninsula
The Palmer Long-Term Ecological Research program has sampled waters of the western Antarctic Peninsula (wAP) annually each summer since 1990. However, information about the wAP prior to the peak of the phytoplankton bloom in January is sparse. Here we present results from a spring process cruise tha...
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ftdryad:oai:v1.datadryad.org:10255/dryad.161680 2023-05-15T13:57:22+02:00 Data from: Early spring phytoplankton dynamics in the western Antarctic Peninsula Arrigo, Kevin R. van Dijken, Gert L. Alderkamp, Anne-Carlijn Erickson, Zachary K. Lewis, Kate M. Lowry, Kate E. Joy-Warren, Hannah L. Middag, Rob Nash-Arrigo, Janice E. Selz, Virginia Van de Poll, Willem H. Western Antarctic Peninsula Antarctica 2017-11-20T20:09:39Z http://hdl.handle.net/10255/dryad.161680 https://doi.org/10.5061/dryad.8j40q unknown doi:10.5061/dryad.8j40q/1 doi:10.5061/dryad.8j40q/2 doi:10.1002/2017jc013281 doi:10.5061/dryad.8j40q Arrigo KR, van Dijken GL, Alderkamp A, Erickson ZK, Lewis KM, Lowry KE, Joy-Warren HL, Middag R, Nash-Arrigo JE, Selz V, van de Poll W (2017) Early Spring Phytoplankton Dynamics in the Western Antarctic Peninsula. Journal of Geophysical Research: Oceans 122(12): 9350-9369. http://hdl.handle.net/10255/dryad.161680 phytoplankton iron nutrients bloom Article 2017 ftdryad https://doi.org/10.5061/dryad.8j40q https://doi.org/10.5061/dryad.8j40q/1 https://doi.org/10.5061/dryad.8j40q/2 https://doi.org/10.1002/2017jc013281 2020-01-01T15:59:15Z The Palmer Long-Term Ecological Research program has sampled waters of the western Antarctic Peninsula (wAP) annually each summer since 1990. However, information about the wAP prior to the peak of the phytoplankton bloom in January is sparse. Here we present results from a spring process cruise that sampled the wAP in the early stages of phytoplankton bloom development in 2014. Sea ice concentrations were high on the shelf relative to non-shelf waters, especially toward the south. Macronutrients were high and non-limiting to phytoplankton growth in both shelf and non-shelf waters, while dissolved iron concentrations were high only on the shelf. Phytoplankton were in good physiological condition throughout the wAP, although biomass on the shelf was uniformly low, presumably because of heavy sea ice cover. In contrast, an early stage phytoplankton bloom was observed beneath variable sea ice cover just seaward of the shelf break. Chlorophyll a concentrations in the bloom reached 2 mg m−3 within a 100 to 150 km band between the SBACC and SACCF. The location of the bloom appeared to be controlled by a balance between enhanced vertical mixing at the position of the two fronts and increased stratification due to melting sea ice between them. Unlike summer, when diatoms overwhelmingly dominate the phytoplankton population of the wAP, the haptophyte Phaeocystis antarctica dominated in spring, although diatoms were common. These results suggest that factors controlling phytoplankton abundance and composition change seasonally and may differentially affect phytoplankton populations as environmental conditions within the wAP region continue to change. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice Dryad Digital Repository (Duke University) Antarctic Antarctic Peninsula |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
phytoplankton iron nutrients bloom |
spellingShingle |
phytoplankton iron nutrients bloom Arrigo, Kevin R. van Dijken, Gert L. Alderkamp, Anne-Carlijn Erickson, Zachary K. Lewis, Kate M. Lowry, Kate E. Joy-Warren, Hannah L. Middag, Rob Nash-Arrigo, Janice E. Selz, Virginia Van de Poll, Willem H. Data from: Early spring phytoplankton dynamics in the western Antarctic Peninsula |
topic_facet |
phytoplankton iron nutrients bloom |
description |
The Palmer Long-Term Ecological Research program has sampled waters of the western Antarctic Peninsula (wAP) annually each summer since 1990. However, information about the wAP prior to the peak of the phytoplankton bloom in January is sparse. Here we present results from a spring process cruise that sampled the wAP in the early stages of phytoplankton bloom development in 2014. Sea ice concentrations were high on the shelf relative to non-shelf waters, especially toward the south. Macronutrients were high and non-limiting to phytoplankton growth in both shelf and non-shelf waters, while dissolved iron concentrations were high only on the shelf. Phytoplankton were in good physiological condition throughout the wAP, although biomass on the shelf was uniformly low, presumably because of heavy sea ice cover. In contrast, an early stage phytoplankton bloom was observed beneath variable sea ice cover just seaward of the shelf break. Chlorophyll a concentrations in the bloom reached 2 mg m−3 within a 100 to 150 km band between the SBACC and SACCF. The location of the bloom appeared to be controlled by a balance between enhanced vertical mixing at the position of the two fronts and increased stratification due to melting sea ice between them. Unlike summer, when diatoms overwhelmingly dominate the phytoplankton population of the wAP, the haptophyte Phaeocystis antarctica dominated in spring, although diatoms were common. These results suggest that factors controlling phytoplankton abundance and composition change seasonally and may differentially affect phytoplankton populations as environmental conditions within the wAP region continue to change. |
format |
Article in Journal/Newspaper |
author |
Arrigo, Kevin R. van Dijken, Gert L. Alderkamp, Anne-Carlijn Erickson, Zachary K. Lewis, Kate M. Lowry, Kate E. Joy-Warren, Hannah L. Middag, Rob Nash-Arrigo, Janice E. Selz, Virginia Van de Poll, Willem H. |
author_facet |
Arrigo, Kevin R. van Dijken, Gert L. Alderkamp, Anne-Carlijn Erickson, Zachary K. Lewis, Kate M. Lowry, Kate E. Joy-Warren, Hannah L. Middag, Rob Nash-Arrigo, Janice E. Selz, Virginia Van de Poll, Willem H. |
author_sort |
Arrigo, Kevin R. |
title |
Data from: Early spring phytoplankton dynamics in the western Antarctic Peninsula |
title_short |
Data from: Early spring phytoplankton dynamics in the western Antarctic Peninsula |
title_full |
Data from: Early spring phytoplankton dynamics in the western Antarctic Peninsula |
title_fullStr |
Data from: Early spring phytoplankton dynamics in the western Antarctic Peninsula |
title_full_unstemmed |
Data from: Early spring phytoplankton dynamics in the western Antarctic Peninsula |
title_sort |
data from: early spring phytoplankton dynamics in the western antarctic peninsula |
publishDate |
2017 |
url |
http://hdl.handle.net/10255/dryad.161680 https://doi.org/10.5061/dryad.8j40q |
op_coverage |
Western Antarctic Peninsula Antarctica |
geographic |
Antarctic Antarctic Peninsula |
geographic_facet |
Antarctic Antarctic Peninsula |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Sea ice |
op_relation |
doi:10.5061/dryad.8j40q/1 doi:10.5061/dryad.8j40q/2 doi:10.1002/2017jc013281 doi:10.5061/dryad.8j40q Arrigo KR, van Dijken GL, Alderkamp A, Erickson ZK, Lewis KM, Lowry KE, Joy-Warren HL, Middag R, Nash-Arrigo JE, Selz V, van de Poll W (2017) Early Spring Phytoplankton Dynamics in the Western Antarctic Peninsula. Journal of Geophysical Research: Oceans 122(12): 9350-9369. http://hdl.handle.net/10255/dryad.161680 |
op_doi |
https://doi.org/10.5061/dryad.8j40q https://doi.org/10.5061/dryad.8j40q/1 https://doi.org/10.5061/dryad.8j40q/2 https://doi.org/10.1002/2017jc013281 |
_version_ |
1766265048216371200 |