|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences >
Peer-reviewed Journal Articles, etc >
Influences of mesoscale anticyclonic eddies on the zooplankton community south of the western Aleutian Islands during the summer of 2010
| Title: | Influences of mesoscale anticyclonic eddies on the zooplankton community south of the western Aleutian Islands during the summer of 2010 |
| Authors: | Saito, Rui Browse this author | | Yamaguchi, Atsushi Browse this author →KAKEN DB | | Yasuda, Ichiro Browse this author →KAKEN DB | | Ueno, Hiromichi Browse this author →KAKEN DB | | Ishiyama, Hiromu Browse this author | | Onishi, Hiroji Browse this author →KAKEN DB | | Imai, Ichiro Browse this author →KAKEN DB |
| Keywords: | Aleutian eddies | | Calanoid copepods | | Mesoscale anticyclonic eddies | | Zooplankton |
| Issue Date: | Jan-2014 |
| Publisher: | Oxford University Press |
| Journal Title: | Journal of plankton research |
| Volume: | 36 |
| Issue: | 1 |
| Start Page: | 117 |
| End Page: | 128 |
| Publisher DOI: | 10.1093/plankt/fbt087 |
| Abstract: | 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. |
| 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 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/57138 |
| Appears in Collections: | 水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 今井 一郎
|
