Investigation of the Marine Organisms around the Fukuoka City. Ⅱ. Seasonal Fluctuation of a Sea Grass Zostera marina L. in the Southern Part of Nokonoshima Island.

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  • Ogata Ikuo
    Laboratory of Fisheries Biology, Division of Animal Bioresource Sciences, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University
  • Tsuruda Yukinari
    Laboratory of Fisheries Biology, Division of Animal and Marine Bioresource Sciences, Department of Bioresource Sciences, Faculty of Agriculture, Kyushu University
  • Kawaguchi Shigeo
    Laboratory of Fisheries Biology, Division of Animal and Marine Bioresource Sciences, Department of Bioresource Sciences, Faculty of Agriculture, Kyushu University

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Other Title
  • 福岡市周辺の海産生物調査.Ⅱ.能古島南部におけるアマモZostera marina L.の季節的変動
  • 福岡市周辺の海産生物調査(2)能古島南部におけるアマモZostera marina L.の季節的変動
  • フクオカシ シュウヘン ノ カイサン セイブツ チョウサ(2)ノウ コ トウ ナンブ ニ オケル アマモ Zostera marina L.ノ キセツテキ ヘンドウ

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The seasonal fluctuation of a sea grass, Zostera marina, was monthly investigated at Nokonoshima Island within the Hakata Bay, Fukuoka city, from June 2007 to December 2008. The mean length of vegetative branch was longest（100.1cm）in June and shortest（21.2cm）in October in 2007. Then, the branches grew again and the length reached a peak（122.1cm）in June and after that became shortest again in October in 2008. The wet weight of vegetative branch fluctuated in a very similar pattern with the length. In 2008, the fertile branch appeared from April and flowers started to blossom from May. The ratio of fertile branches to all the branches was 12.7%. The mean vegetative density at the study site was 84.4 branches/㎡ in April, 45.2 branches/㎡ in September, 27.7 branches/㎡ in November in 2008.

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