Seasonal changes in the planktonic food web off Cape Esan, southwestern Hokkaido, Japan

• Shinada Akiyoshi

  Graduate School of Fisheries Sciences, Hokkaido University Hokkaido Abashiri Fisheries Experimental Station

• Ban Syuhei

  Graduate School of Fisheries Sciences, Hokkaido University School of Environmental Science University of Shiga Prefecture

• Ikeda Tsutomu

  Graduate School of Fisheries Sciences, Hokkaido University

抄録

The planktonic food web structure in the water off Cape Esan, southwestern Hokkaido, Japan was investigated at approximately one or two-month intervals from May 1997 through June 1999, based on biomass data of pico- (0.2–2 μm), nano- (2–10 μm), micro- (10–200 μm) and mesoplankton (200–20,000 μm). In spring (March–April), the water column was stratified and a spring diatom bloom occurred. In addition, microzooplankton and copepod biomass was high among the heterotrophic plankton in spring. In other seasons (summer, fall and winter), pico- and nanoplankton assemblages were dominant within the plankton community. These results indicate that the grazing food chain (micro-size phytoplankton – copepods) might be important and the indirect route (micro-size phytoplankton – microzooplankton – copepods) probably prevails in spring, while the microbial food web might be the predominant carbon flow route in other seasons.

収録刊行物

• Plankton and Benthos Research

  Plankton and Benthos Research 3 (1), 18-26, 2008

  日本プランクトン学会、日本ベントス学会

キーワード

• grazing food chain
• microbial food web
• planktonic food web

詳細情報

• CRID: 1390282680240780544
• NII論文ID: 10021072462
• NII書誌ID: AA12130745
• DOI: 10.3800/pbr.3.18
• ISSN: 1882627X
• ISSN: 18808247
• NDL書誌ID: 9404438
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9404438
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可