Distribution of Benthic Invertebrates in Relation to Zonal Structure of Algal Communities in a Rocky Sublittoral Area, Tomari-hama, Oshika Peninsula, Northern Japan

DOI Web Site 被引用文献6件 参考文献51件
  • Omori Michio
    Department of Bioresource Science, Graduate School of Agricultural Science, Tohoku University,
  • Taniguchi Kazuya
    Department of Bioresource Science, Graduate School of Agricultural Science, Tohoku University,
  • Shiraishi Kazunari
    Miyagi Prefectural Fisheries Exploitation and Research Center,
  • Seki Tetsuo
    National Research Institute of Aquaculture,

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Abstract: A shallow Sargassum zone at around 1 to 2m depth was followed sequentially by an Eisenia zone at 2-7m depth, a Dilophus zone less than 1m wide, and a crustose coralline algal zone furthest offshore. Cobblestone areas were found here and there at 2 to 3m depth. Samples handpicked and/or obtained by air-lifting were obtained around a station in each zone and a cobblestone area in June, August, October, and December, 1990, and March, 1991. A matrix of Pearson's correlation coefficients of species composition with respect to the analytical unit of “site×time” was scaled multidimensionally. Behavioral areas of the MDS plots were similar between the Sargassum zone and cobblestone area, and between the Dilophus and crustose coralline algal zones, but the Eisenia zone was quite separate from these. A dendrogram of species-specific distribution pattern with respect to the analytical unit of. “species×time” showed three strata differing in linkage levels, i. e. 18 subclusters with linkage levels of extremely low dissimilarity, nine clusters of low dissimilarity linkage, and three superclusters linked at relatively high levels of dissimilarity. Out of the nine clusters, Clusters 1, 3, 5, 6, and 8 were characterized by having their highest relative densities in the crustose coralline algal zone, the Dilophus zone, the Eisenia zone, the Sargassum zone, and the cobblestone area, respectively. The respective superclusters were characterized by high relative densities in the following areas: Supercluster 1, either the Dilophus zone or the crustose coralline algal zone; Supercluster 2, the Eisenia zone; Supercluster 3, either the Sargassum zone or the cobblestone area. Subclusters corresponded to subtle variations of cluster characteristics. These facts demonstrate the important role of algae in the structure of benthic animal distribution.

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  • BENTHOS RESEARCH

    BENTHOS RESEARCH 55 (2), 69-83, 2000

    日本ベントス学会

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