Microzooplankton in a Warming Arctic: A Comparison of Tintinnids and Radiolarians from Summer 2011 and 2012 in the Chukchi Sea
The Chukchi Sea was sampled in August of 2011, a year of near-normal sea ice among recent years, and again in August 2012, a year of all time record low sea ice. We exploited this sampling to test the hypothesis that different sea ice conditions are associated with differences in abundances or speci...
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ftejournalsojs:oai:ojs.www.ejournals.eu:article/4155 2023-05-15T15:09:22+02:00 Microzooplankton in a Warming Arctic: A Comparison of Tintinnids and Radiolarians from Summer 2011 and 2012 in the Chukchi Sea Dolan, John R. Yang, Eun Jin Kim, Tae Wan Kang, Sung-Ho 2015-09-11 application/pdf http://www.ejournals.eu/sj/index.php/AProto/article/view/4155 pol pol Acta Protozoologica http://www.ejournals.eu/sj/index.php/AProto/article/view/4155/4072 http://www.ejournals.eu/sj/index.php/AProto/article/view/4155 ##submission.copyrightStatement## Acta Protozoologica; Vol 53, No 1 (2014); 101–113 1689-0027 0065-1583 Climate change plankton rhizaria sea ice Tintinnina info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Recenzowany artykuł 2015 ftejournalsojs 2020-03-01T09:10:54Z The Chukchi Sea was sampled in August of 2011, a year of near-normal sea ice among recent years, and again in August 2012, a year of all time record low sea ice. We exploited this sampling to test the hypothesis that different sea ice conditions are associated with differences in abundances or species composition of microzooplankton through an examination of tintinnids and radiolarians. From 18 stations in 2011, and 19 stations in 2012, organisms were enumerated in plankton net tow material, and chlorophyll determinations made (total and ≤ 20 μm) from discrete depth samples. We found that the low sea ice conditions of 2012 were associated with higher chlorophyll concentrations (both total and the ≤ 20 μm size fraction), compared to 2011. However, tintinnid ciliates and radiolarians were much lower in concentration, by about an order of magnitude, compared to 2011. In both years the radiolarian assemblage was dominated by Amphiselma setosa. The species composition of the tintinnid ciliates was similar in the two years, but there were distinct differences in the relative abundances of certain species. The 2012, low sea ice assemblage, was dominated by small forms in contrast to 2011, when large species were the most abundant. We present these findings in detail and discuss possible explanations for the apparent differences in the microzooplankton communities associated with distinct sea ice conditions in the Chukchi Sea. Article in Journal/Newspaper Arctic Chukchi Chukchi Sea Climate change Sea ice Portal Czasopism Naukowych (E-Journals) Arctic Chukchi Sea |
institution |
Open Polar |
collection |
Portal Czasopism Naukowych (E-Journals) |
op_collection_id |
ftejournalsojs |
language |
Polish |
topic |
Climate change plankton rhizaria sea ice Tintinnina |
spellingShingle |
Climate change plankton rhizaria sea ice Tintinnina Dolan, John R. Yang, Eun Jin Kim, Tae Wan Kang, Sung-Ho Microzooplankton in a Warming Arctic: A Comparison of Tintinnids and Radiolarians from Summer 2011 and 2012 in the Chukchi Sea |
topic_facet |
Climate change plankton rhizaria sea ice Tintinnina |
description |
The Chukchi Sea was sampled in August of 2011, a year of near-normal sea ice among recent years, and again in August 2012, a year of all time record low sea ice. We exploited this sampling to test the hypothesis that different sea ice conditions are associated with differences in abundances or species composition of microzooplankton through an examination of tintinnids and radiolarians. From 18 stations in 2011, and 19 stations in 2012, organisms were enumerated in plankton net tow material, and chlorophyll determinations made (total and ≤ 20 μm) from discrete depth samples. We found that the low sea ice conditions of 2012 were associated with higher chlorophyll concentrations (both total and the ≤ 20 μm size fraction), compared to 2011. However, tintinnid ciliates and radiolarians were much lower in concentration, by about an order of magnitude, compared to 2011. In both years the radiolarian assemblage was dominated by Amphiselma setosa. The species composition of the tintinnid ciliates was similar in the two years, but there were distinct differences in the relative abundances of certain species. The 2012, low sea ice assemblage, was dominated by small forms in contrast to 2011, when large species were the most abundant. We present these findings in detail and discuss possible explanations for the apparent differences in the microzooplankton communities associated with distinct sea ice conditions in the Chukchi Sea. |
format |
Article in Journal/Newspaper |
author |
Dolan, John R. Yang, Eun Jin Kim, Tae Wan Kang, Sung-Ho |
author_facet |
Dolan, John R. Yang, Eun Jin Kim, Tae Wan Kang, Sung-Ho |
author_sort |
Dolan, John R. |
title |
Microzooplankton in a Warming Arctic: A Comparison of Tintinnids and Radiolarians from Summer 2011 and 2012 in the Chukchi Sea |
title_short |
Microzooplankton in a Warming Arctic: A Comparison of Tintinnids and Radiolarians from Summer 2011 and 2012 in the Chukchi Sea |
title_full |
Microzooplankton in a Warming Arctic: A Comparison of Tintinnids and Radiolarians from Summer 2011 and 2012 in the Chukchi Sea |
title_fullStr |
Microzooplankton in a Warming Arctic: A Comparison of Tintinnids and Radiolarians from Summer 2011 and 2012 in the Chukchi Sea |
title_full_unstemmed |
Microzooplankton in a Warming Arctic: A Comparison of Tintinnids and Radiolarians from Summer 2011 and 2012 in the Chukchi Sea |
title_sort |
microzooplankton in a warming arctic: a comparison of tintinnids and radiolarians from summer 2011 and 2012 in the chukchi sea |
publisher |
Acta Protozoologica |
publishDate |
2015 |
url |
http://www.ejournals.eu/sj/index.php/AProto/article/view/4155 |
geographic |
Arctic Chukchi Sea |
geographic_facet |
Arctic Chukchi Sea |
genre |
Arctic Chukchi Chukchi Sea Climate change Sea ice |
genre_facet |
Arctic Chukchi Chukchi Sea Climate change Sea ice |
op_source |
Acta Protozoologica; Vol 53, No 1 (2014); 101–113 1689-0027 0065-1583 |
op_relation |
http://www.ejournals.eu/sj/index.php/AProto/article/view/4155/4072 http://www.ejournals.eu/sj/index.php/AProto/article/view/4155 |
op_rights |
##submission.copyrightStatement## |
_version_ |
1766340571412037632 |