Germination and habitat characteristics of the differential species of the floodplain plant communities along the lower reaches of the Sagami River, Japan

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  • BABA Akiko
    Graduate School of Engineering, Yokohama National University
  • OHNO Keiichi
    Faculty of Environment and Information Sciences, Yokohama National University

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Other Title
  • 相模川下流の河川敷に分布する草本植物群落区分種22種の水分条件に対する発芽と生育地の特性
  • サガミガワ カリュウ ノ カセンシキ ニ ブンプ スル ソウホン ショクブツ グンラク クブンシュ 22シュ ノ スイブン ジョウケン ニ タイスル ハツガ ト セイイクチ ノ トクセイ

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Description

Twenty-two differential species of the floodplain plant communities along the lower reaches of the Sagami River, western Kanto, Japan, were examined for germination under controlled water conditions. The experimental conditions were prepared as follows: 1) wet, moist and dry conditions during seed storage, and 2) wet to dry conditions of germination beds, and 3) shallow and deep water flood conditions of them. Among the twenty-two species examined, seven species characterizing the communities with dry habitats germinated well on germination beds with moist and wet soil conditions, but germination rate was clearly suppressed by flooding. Germination of nine wet habitat species were inhibited by dry conditions, but could germinate under flood conditions. The remaining six moderate habitat species displayed intermediate germination characteristics. Thus, the suitable germination conditions of the species examined in the present study corresponded to the habitats of the plant communities to which they belonged. However, a common suitable habitat for seed storage could not be found.

Journal

  • Vegetation Science

    Vegetation Science 21 (2), 53-64, 2004

    The Society of Vegetation Science

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