魚類分布の定量的表現による魚礁の効果範囲の推定と考察

DOI 日本農学文献記事索引 Web Site 被引用文献2件 参考文献30件

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  • Estimation of the Effective Range of Fish Reefs by Quantitative Assessment of Fish Distributions
  • ギョルイ ブンプ ノ テイリョウテキ ヒョウゲン ニ ヨル ギョショウ ノ コウカ ハンイ ノ スイテイ ト コウサツ

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The distribution of the fishes in the circumference of fish reefs varies with fish species. Furthermore, it changes with forms and volume of fish reefs. The relation between the distance x and the fish catch index q which were obtained by the fish catch experiments classified by distance from artificial reef unit was applied to the approximation formula q=f(x). Moreover, the fish catch index F, for flat ground was determined. Thereby, the distance of the effective range in which an artificial reef unit brings fishes together was determined by the intersection of q=f_c, and approximation formula q=f(x). Furthermore, the distribution of white-edged rockfish fished by two artificial reef units having different volume was compared. Consequently, it is suggested that the effective range become increase with the volume of reefs.

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