Microzooplankton in a Warming Arctic: A Comparison of Tintinnids and Radiolarians from Summer 2011 and 2012 in the Chukchi Sea
International audience 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...
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ftinsu:oai:HAL:hal-01307075v1 2024-02-11T10:01:31+01:00 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 Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) KIOST 2014 https://hal.sorbonne-universite.fr/hal-01307075 https://hal.sorbonne-universite.fr/hal-01307075/document https://hal.sorbonne-universite.fr/hal-01307075/file/ActaProto2014.pdf https://doi.org/10.4467/16890027AP.14.010.1447 en eng HAL CCSD Jagiellonian University info:eu-repo/semantics/altIdentifier/doi/10.4467/16890027AP.14.010.1447 hal-01307075 https://hal.sorbonne-universite.fr/hal-01307075 https://hal.sorbonne-universite.fr/hal-01307075/document https://hal.sorbonne-universite.fr/hal-01307075/file/ActaProto2014.pdf doi:10.4467/16890027AP.14.010.1447 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0065-1583 EISSN: 1689-0027 Acta Protozoologica https://hal.sorbonne-universite.fr/hal-01307075 Acta Protozoologica, 2014, 53 (1), pp.101-113. ⟨10.4467/16890027AP.14.010.1447⟩ Climate change plankton rhizaria sea ice Tintinnina [SDV.BA]Life Sciences [q-bio]/Animal biology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2014 ftinsu https://doi.org/10.4467/16890027AP.14.010.1447 2024-01-24T17:39:10Z International audience 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 Institut national des sciences de l'Univers: HAL-INSU Arctic Chukchi Sea |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Climate change plankton rhizaria sea ice Tintinnina [SDV.BA]Life Sciences [q-bio]/Animal biology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Climate change plankton rhizaria sea ice Tintinnina [SDV.BA]Life Sciences [q-bio]/Animal biology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography 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 [SDV.BA]Life Sciences [q-bio]/Animal biology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience 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. |
author2 |
Laboratoire d'océanographie de Villefranche (LOV) Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) KIOST |
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 |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.sorbonne-universite.fr/hal-01307075 https://hal.sorbonne-universite.fr/hal-01307075/document https://hal.sorbonne-universite.fr/hal-01307075/file/ActaProto2014.pdf https://doi.org/10.4467/16890027AP.14.010.1447 |
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 |
ISSN: 0065-1583 EISSN: 1689-0027 Acta Protozoologica https://hal.sorbonne-universite.fr/hal-01307075 Acta Protozoologica, 2014, 53 (1), pp.101-113. ⟨10.4467/16890027AP.14.010.1447⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.4467/16890027AP.14.010.1447 hal-01307075 https://hal.sorbonne-universite.fr/hal-01307075 https://hal.sorbonne-universite.fr/hal-01307075/document https://hal.sorbonne-universite.fr/hal-01307075/file/ActaProto2014.pdf doi:10.4467/16890027AP.14.010.1447 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.4467/16890027AP.14.010.1447 |
_version_ |
1790597318696763392 |