瀬戸内海の各灘における藻場・干潟分布特性と主要魚種漁獲量との関係

  • 吉田 吾郎
    (独)水産総合研究センター瀬戸内海区水産研究所
  • 堀 正和
    (独)水産総合研究センター瀬戸内海区水産研究所
  • 崎山 一孝
    (独)水産総合研究センター瀬戸内海区水産研究所:(独)水産総合研究センター瀬戸内海区水産研究所百島実験施設
  • 浜口 昌巳
    (独)水産総合研究センター瀬戸内海区水産研究所
  • 梶田 淳
    水圏リサーチ(株)
  • 西村 和雄
    水圏リサーチ(株)
  • 小路 淳
    広島大学大学院生物圏科学研究科附属瀬戸内圏フィールド科学教育研究センター竹原水産実験所

書誌事項

タイトル別名
  • Distribution of Seaweed Bed and Tidal Flat, and Their Correlations with Fisheries Catches in the Nine Sea Areas of the Seto Inland Sea
  • セトナイカイ ノ カク ナダ ニ オケル モバ ヒガタ ブンプ トクセイ ト シュヨウギョシュ ギョカクリョウ ト ノ カンケイ

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抄録

Correlation between fisheries catch and the area of coastal ecological components (seaweed bed, tidal flat and shallow sea area) was analyzed for the nine sea areas (Suo-Nada, Iyo-Nada, Aki-Nada, Bingo-Geiyo-Seto, Hiuchi-Nada, Bisan-Seto, Harima-Nada, Osaka-Bay and Kii-Channel) in the Seto Inland Sea. Areas of seaweed bed and tidal flat were based on research conducted in 1978-79 and 1989-91 by Ministry of the Environment, and area shallower than 10m were estimated from coastal-hydrographic data on a GIS digital map. Annual mean fisheries catches of 28 main fish items corresponding to the years described above were analyzed using the Pearson product-moment correlation coefficient and Spearman rank correlation coefficient after being standardized per unit sea area. Thirty-six positive correlations were detected, e.g., Japanese flounder, fine spotted flounder, red sea bream, black sea bream and rock fishes (Sebastes spp.) with Zostera bed, Japanese flounder, red sea bream, black sea bream, sea urchins and turban shell (Turbo cornutus) with Sargassum bed, abalones with kelp (Ecklonia) bed, flat fishes, benthic animals in total and shellfishes in total with tidal flat and shallow sea area. The relationships between the distribution patterns of those ecological components and the characteristics in fisheries production are discussed.

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