Influences of mesoscale anticyclonic eddies on the zooplankton community south of the western Aleutian Islands during the summer of 2010
Mesoscale anticyclonic eddies have been observed south of the Aleutian Islands. Eddies farther east, in the Gulf of Alaska, are known to transport coastal water and coastal zooplankton to the offshore open ocean. The impacts of mesoscale anticyclonic eddies formed south of the western Aleutian Islan...
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Online Access: | http://hdl.handle.net/2115/57138 https://doi.org/10.1093/plankt/fbt087 |
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/57138 2023-05-15T15:33:34+02:00 Influences of mesoscale anticyclonic eddies on the zooplankton community south of the western Aleutian Islands during the summer of 2010 Saito, Rui Yamaguchi, Atsushi Yasuda, Ichiro Ueno, Hiromichi Ishiyama, Hiromu Onishi, Hiroji Imai, Ichiro http://hdl.handle.net/2115/57138 https://doi.org/10.1093/plankt/fbt087 eng eng Oxford University Press http://hdl.handle.net/2115/57138 Journal of plankton research, 36(1): 117-128 http://dx.doi.org/10.1093/plankt/fbt087 This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Journal of Plankton Research following peer review. The definitive publisher-authenticated version J. Plankton Res. (January/February 2014) 36 (1): 117-128. is available online at: http://plankt.oxfordjournals.org/cgi/content/full/fbt087?ijkey=XsssmgLRwbO2kGH&keytype=ref Aleutian eddies Calanoid copepods Mesoscale anticyclonic eddies Zooplankton 468 article (author version) fthokunivhus https://doi.org/10.1093/plankt/fbt087 2022-11-18T01:03:02Z Mesoscale anticyclonic eddies have been observed south of the Aleutian Islands. Eddies farther east, in the Gulf of Alaska, are known to transport coastal water and coastal zooplankton to the offshore open ocean. The impacts of mesoscale anticyclonic eddies formed south of the western Aleutian Islands (Aleutian eddies) on the zooplankton community are not fully understood. In the present study, we describe zooplankton population structures within an Aleutian eddy and outside the eddy during July 2010. Based on the sea-level anomaly, the Aleutian eddy was formed south of Attu Island (172 degrees 54'E) in February 2010, and it moved southeastward in the next 5 months. Large oceanic copepods, Neocalanus cristatus, Eucalanus bungii and Metridia pacifica were more abundant inside the eddy than the outside. Inside the eddy, the life stage distribution of N. cristatus was more advanced than that outside, and Neocalanus spp. had accumulated more lipids. These conditions probably reflect the greater primary production in the eddy, production enhanced by nutrients advected into the eddy. The Aleutian eddy contained mostly oceanic copepods because it was formed in the offshore water and/or eddy-eddy interaction occurred after its formation. The sufficient food condition in the eddy presumably resulted in higher growth and survival rates of these oceanic copepods, resulting in the greater abundance, advanced development stages and greater lipid accumulation. Article in Journal/Newspaper Attu Alaska Aleutian Islands Copepods Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Gulf of Alaska Attu Island ENVELOPE(172.909,172.909,52.903,52.903) Journal of Plankton Research 36 1 117 128 |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Aleutian eddies Calanoid copepods Mesoscale anticyclonic eddies Zooplankton 468 |
spellingShingle |
Aleutian eddies Calanoid copepods Mesoscale anticyclonic eddies Zooplankton 468 Saito, Rui Yamaguchi, Atsushi Yasuda, Ichiro Ueno, Hiromichi Ishiyama, Hiromu Onishi, Hiroji Imai, Ichiro Influences of mesoscale anticyclonic eddies on the zooplankton community south of the western Aleutian Islands during the summer of 2010 |
topic_facet |
Aleutian eddies Calanoid copepods Mesoscale anticyclonic eddies Zooplankton 468 |
description |
Mesoscale anticyclonic eddies have been observed south of the Aleutian Islands. Eddies farther east, in the Gulf of Alaska, are known to transport coastal water and coastal zooplankton to the offshore open ocean. The impacts of mesoscale anticyclonic eddies formed south of the western Aleutian Islands (Aleutian eddies) on the zooplankton community are not fully understood. In the present study, we describe zooplankton population structures within an Aleutian eddy and outside the eddy during July 2010. Based on the sea-level anomaly, the Aleutian eddy was formed south of Attu Island (172 degrees 54'E) in February 2010, and it moved southeastward in the next 5 months. Large oceanic copepods, Neocalanus cristatus, Eucalanus bungii and Metridia pacifica were more abundant inside the eddy than the outside. Inside the eddy, the life stage distribution of N. cristatus was more advanced than that outside, and Neocalanus spp. had accumulated more lipids. These conditions probably reflect the greater primary production in the eddy, production enhanced by nutrients advected into the eddy. The Aleutian eddy contained mostly oceanic copepods because it was formed in the offshore water and/or eddy-eddy interaction occurred after its formation. The sufficient food condition in the eddy presumably resulted in higher growth and survival rates of these oceanic copepods, resulting in the greater abundance, advanced development stages and greater lipid accumulation. |
format |
Article in Journal/Newspaper |
author |
Saito, Rui Yamaguchi, Atsushi Yasuda, Ichiro Ueno, Hiromichi Ishiyama, Hiromu Onishi, Hiroji Imai, Ichiro |
author_facet |
Saito, Rui Yamaguchi, Atsushi Yasuda, Ichiro Ueno, Hiromichi Ishiyama, Hiromu Onishi, Hiroji Imai, Ichiro |
author_sort |
Saito, Rui |
title |
Influences of mesoscale anticyclonic eddies on the zooplankton community south of the western Aleutian Islands during the summer of 2010 |
title_short |
Influences of mesoscale anticyclonic eddies on the zooplankton community south of the western Aleutian Islands during the summer of 2010 |
title_full |
Influences of mesoscale anticyclonic eddies on the zooplankton community south of the western Aleutian Islands during the summer of 2010 |
title_fullStr |
Influences of mesoscale anticyclonic eddies on the zooplankton community south of the western Aleutian Islands during the summer of 2010 |
title_full_unstemmed |
Influences of mesoscale anticyclonic eddies on the zooplankton community south of the western Aleutian Islands during the summer of 2010 |
title_sort |
influences of mesoscale anticyclonic eddies on the zooplankton community south of the western aleutian islands during the summer of 2010 |
publisher |
Oxford University Press |
url |
http://hdl.handle.net/2115/57138 https://doi.org/10.1093/plankt/fbt087 |
long_lat |
ENVELOPE(172.909,172.909,52.903,52.903) |
geographic |
Gulf of Alaska Attu Island |
geographic_facet |
Gulf of Alaska Attu Island |
genre |
Attu Alaska Aleutian Islands Copepods |
genre_facet |
Attu Alaska Aleutian Islands Copepods |
op_relation |
http://hdl.handle.net/2115/57138 Journal of plankton research, 36(1): 117-128 http://dx.doi.org/10.1093/plankt/fbt087 |
op_rights |
This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Journal of Plankton Research following peer review. The definitive publisher-authenticated version J. Plankton Res. (January/February 2014) 36 (1): 117-128. is available online at: http://plankt.oxfordjournals.org/cgi/content/full/fbt087?ijkey=XsssmgLRwbO2kGH&keytype=ref |
op_doi |
https://doi.org/10.1093/plankt/fbt087 |
container_title |
Journal of Plankton Research |
container_volume |
36 |
container_issue |
1 |
container_start_page |
117 |
op_container_end_page |
128 |
_version_ |
1766364096477790208 |