伊豆半島・岩地湾におけるアマモ群落の垂直分布と季節変動について

• 林田 文郎

書誌事項

タイトル別名

• Vertical Distribution and Seasonal Variation of Eelgrass Bed in Iwachi Bay, Izu Peninsula, Japan.
• イズ ハントウ イワチワン ニ オケル アマモ グンラク ノ スイチョク ブンプ ト キセツ ヘンドウ ニ ツイテ

抄録

The vertical distribution of an eelgrass bed was surveyed in Iwachi Bay, the Pacific coast of central Japan. Samplings were conducted from May to November in 1977 using SCUBA. Eelgrasses were distributed at the depth of 3 to 11m. The lower limit of the bed at 12m is probably due to the low light intensity at that depth relative to the surface. Nevertheless, the plants showed good growth at 7-10m depth, which is comparatively deeper than other eelgrass habitation in Japan. Highest population density (290 shoots/m²) was observed in September and fresh weight of biomass (888g/m²) was highest in July at 7m depth. The ratio of reproductive shoots to the total shoots was also highest at the aforementioned depth which was about 36% in June. The maximum value of the mean leaf area index was about 3 at 10m depth in July. It was then considered that the high values of water transparency and solar radiation, and longer sunshine duration compared with the other localities contributed to the growth of eelgrass in deeper waters in Iwachi Bay.

収録刊行物

• 日本水産学会誌

  日本水産学会誌 66 (2), 212-220, 2000

  公益社団法人 日本水産学会

キーワード

• 海草類
• アマモ群落
• 駿河湾
• 垂直分布

詳細情報

• CRID: 1390001206412169344
• NII論文ID: 110003145004
• NII書誌ID: AN00193422
• DOI: 10.2331/suisan.66.212
• ISSN: 1349998X
• ISSN: 00215392
• ISSN: http://id.crossref.org/issn/00215392
• NDL書誌ID: 5325582
• Web Site: https://agriknowledge.affrc.go.jp/RN/2010610391
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5325582
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/11075267
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • NDL-Digital
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可