Seasonal changes in the planktonic food web off Cape Esan, southwestern Hokkaido, Japan
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- Shinada Akiyoshi
- Graduate School of Fisheries Sciences, Hokkaido University Hokkaido Abashiri Fisheries Experimental Station
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- Ban Syuhei
- Graduate School of Fisheries Sciences, Hokkaido University School of Environmental Science University of Shiga Prefecture
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- Ikeda Tsutomu
- Graduate School of Fisheries Sciences, Hokkaido University
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Description
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.
Journal
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- Plankton and Benthos Research
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Plankton and Benthos Research 3 (1), 18-26, 2008
The Plankton Society of Japan, The Japanese Association of Benthology
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Details 詳細情報について
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- CRID
- 1390282680240780544
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- NII Article ID
- 10021072462
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- NII Book ID
- AA12130745
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- DOI
- 10.3800/pbr.3.18
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- ISSN
- 1882627X
- 18808247
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- NDL BIB ID
- 9404438
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed