洋上風況観測塔基礎の水産資源保護・育成効果に関する調査・分析

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  • Survey and Analysis of Effects of Offshore Meteorological Mast Foundations on Protection and Nurturing of Fishery Resources
  • ヨウジョウフウキョウカンソクトウ キソ ノ スイサン シゲン ホゴ ・ イクセイ コウカ ニ カンスル チョウサ ・ ブンセキ

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<p>The foundations of offshore wind power generation facilities are said to have reef effects such as collecting fish. However, some fishermen are of the opinion that the reef effects are to be expected, while others are concerned that it may promote recreational fishery and lead to problems with the coastal fishery. There are currently few research or survey results on the specific reef effects in Japan. While the foundations of offshore meteorological masts installed by Japan Wind Development Co., Ltd., off Kodomari and in Mutsu Bay in September 2020 are smaller in scale than the foundations of actual seabed-fixed offshore wind power generations, but they have almost the same installation depth and the same structure.</p><p>The authors have therefore continuously surveyed and analyzed the habitat and growth of fish, fish feed organisms, seaweeds and benthic animals in and around the monopile and scour protection of offshore meteorological masts. As a result, their reef effects as well as the protection and growth effect of fishery resources as a nursery ground for young fish and juvenile fish have been clarified. It has also been found that the planning and construction of offshore wind power generation facilities can be linked to the development of fishing grounds (fisheries public works projects), such as the release of seedlings, the creation of seaweed beds and breeding grounds, and the creation of artificial reefs, based on the life history of fishery organisms, to achieve sustainable fisheries.</p>

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