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

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 et al.

Journal of plankton research, 2014, 36(1), 117-128

Permalink : https://hdl.handle.net/2115/57138

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アクセス権	open access
URI	https://hdl.handle.net/2115/57138
タイトル	Influences of mesoscale anticyclonic eddies on the zooplankton community south of the western Aleutian Islands during the summer of 2010
著者	Saito, Rui ; Yamaguchi, Atsushi ; Yasuda, Ichiro ; Ueno, Hiromichi ; Ishiyama, Hiromu ; Onishi, Hiroji ; Imai, Ichiro
著者名 Saito, Rui
e-Rad_Researcher 50344495 著者名 Yamaguchi, Atsushi
e-Rad_Researcher 80270792 著者名 Yasuda, Ichiro
e-Rad_Researcher 90421875 著者名 Ueno, Hiromichi
著者名 Ishiyama, Hiromu
e-Rad_Researcher 80241371 著者名 Onishi, Hiroji
e-Rad_Researcher 80271013 著者名 Imai, Ichiro
言語	英語
キーワード	Aleutian eddies
	Calanoid copepods
	Mesoscale anticyclonic eddies
	Zooplankton
発行日	2014-01
出版者	Oxford University Press
収録物名	Journal of plankton research
巻(号)	36(1)
ページ	117-128
抄録	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.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	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
PISSN	0142-7873
EISSN	1464-3774
NCID	AA0025899X
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1093/plankt/fbt087