生物環境に配慮した構造物の開発

書誌事項

タイトル別名
  • Improvement of Functions of Coastal Structures as Habitats for Marine Organisms
  • 生物環境に配慮した構造物の開発--北海道における取り組み〔含 質疑応答〕
  • セイブツ カンキョウ ニ ハイリョシタ コウゾウブツ ノ カイハツ ホッカイド
  • 北海道における取り組み

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抄録

As breakwaters having the function of seaweed bed, sloping breakwaters with rear step and a wave absorbing works with a small step were constructed. Also, to confirm the function of breakwaters as spawning ground, a investigation has been made on the spawning situation of loligos at inside and out side ports. It was found that a wave absorbing work and the like are functioning as spawning grounds in ports where the loligos are migrating. Authors have been developing the armor block that was added the function of the loligos spawning ground and applied them to some fishing ports in Hokkaido. In order to clarify the function of breakwaters as habitats for fishes and shellfishes, a gill net investigation was conducted around breakwaters and in comparative zones where there are no.structures. Quantity of fish catch by gill net around breakwaters was greater than that in the zones.

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