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北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University >
第70巻 第1号 >

Comparison of the vertical distribution of pelagic copepod abundance, biomass and community structure between the Atlantic and Pacific sectors of the Arctic Ocean

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Please use this identifier to cite or link to this item:http://doi.org/10.14943/bull.fish.70.1.91

Title: Comparison of the vertical distribution of pelagic copepod abundance, biomass and community structure between the Atlantic and Pacific sectors of the Arctic Ocean
Authors: Abe, Yoshiyuki Browse this author
Hildebrandt, Nicole Browse this author
Matsuno, Kohei Browse this author →KAKEN DB
Niehoff, Barbara Browse this author
Yamaguchi, Atsushi Browse this author →KAKEN DB
Keywords: Copepods
Fram Strait
Canada Basin
Vertical distribution
Arctic Ocean
Calanus finmarchicus
Spinocalanidae
Issue Date: 24-Aug-2020
Publisher: 北海道大学大学院水産科学研究院
Journal Title: 北海道大学水産科学研究彙報
Journal Title(alt): Bulletin of Fisheries Sciences, Hokkaido University
Volume: 70
Issue: 1
Start Page: 91
End Page: 102
Abstract: We compared copepod abundance, biomass and community structure in the Atlantic sector (Fram Strait) and Pacific sector (Canada Basin) of the Arctic Ocean by using vertical stratified zooplankton samples collected from 0-1,000 m or 0-1,500 m during daytime in summer. Abundance and biomass were high at the surface layer and decreased with increasing depth in both regions. Abundance and biomass in the surface layer in the Fram Strait were 6-18 times higher than those in the Canada Basin.  According to cluster analysis, the copepod communities were separated into three groups that varied vertically and included both locations. Regional differences were marked for Calanus finmarchicus, which was distributed only in the Fram Strait. In the Canada Basin, Spinocalanidae composed 56.1% of calanoid copepod abundance for the bathypelagic groups and also contributed 7.5% of abundance throughout the water column. The dominance of Spinocalanidae may reflect the oligotrophic environment in the Pacific sector of the Arctic Ocean.
Type: bulletin (article)
URI: http://hdl.handle.net/2115/79120
Appears in Collections:北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University > 第70巻 第1号

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