Marine Algae in Matsushima Bay, Northeastern Honshu, Japan

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  • Narita Michiko
    Laboratory of Marine Plant Ecology, Graduate School of Agricultural Science, Tohoku University
  • Agatsuma Yukio
    Laboratory of Marine Plant Ecology, Graduate School of Agricultural Science, Tohoku University
  • Taniguchi Kazuya
    Laboratory of Marine Plant Ecology, Graduate School of Agricultural Science, Tohoku University

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  • 松島湾の海藻

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Abstract

Marine algae were collected from March 2004 to February 2005 at Sabusawa Island, Hanabuchihama, and Funairi Island in Matsushima Bay (38°18´N, 141°5´E). A total of 134 species were collected, of which 54 species newly listed as marine plants in Matsushima Bay. The I/H value, the ratio of the number of species with isomorphic alternation of generations or no alternation (generally found in warm current areas; I) to that of species with heteromorphic alternation of generations (generally found in cold current areas; H) in Matsushima Bay was 1.7, clearly higher than the values of 1.3-1.4 found in localities to the southern coast of the Oshika Peninsula (38°24´N, 140°22´E). This shows that Matsushima Bay belongs to the temperate floral region phytogeographically. The I/H value were higher than those found in the past. Cole’s coefficient index of similarity between past and present marine algal flora in Matsushima Bay showed no significant similarity. The marine algal flora in Matsushima Bay has changed to a warm current type in synchrony with the 1.5°C increase in the average sea surface temperature from 1926-1935 to 1995-2004.

Journal

  • Aquaculture Science

    Aquaculture Science 56 (3), 387-399, 2008

    Japanese Society for Aquaculture Science

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