ニホンジカが高密度に生息する奈良県大台ヶ原における1983～2001年の植生変化(保全情報)

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  • Vegetational changes between 1983 and 2001 on the Ohdaigahara Subalpine Plateau, central Japan, with a high density of sika deer (<i>Cervus nippon</i>)(News)
  • 保全情報 ニホンジカが高密度に生息する奈良県大台ヶ原における1983～2001年の植生変化
  • ホゼン ジョウホウ ニホンジカ ガ コウミツド ニ セイソク スル ナラケン オオダイガハラ ニ オケル 1983 2001ネン ノ ショクセイ ヘンカ

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With increasing numbers of sika deer Cervus nippon, primary forests have declined considerably since the 1980s on the Ohdaigahara Subalpine Plateau, central Japan. However, a comprehensive survey of the vegetation on the plateau has not been conducted since 1983. Therefore, in 2001, we surveyed the vegetation on the plateau in 197, 20×20-m quadrats, analyzed species composition using the phytosociological methodology, and generated a vegetation map. After 1983, Carici-Piceetum jezoensis var. hondoensis rhododendretosum quinquefolii and associated Sasa nipponica extended their ranges in the eastern part of the plateau, whereas Abieti homolepidis-Fagetum crenatae sasetosum borealis expanded in western areas. In the eastern region of the plateau, Rhododendron quinquefolium, which was rarely browsed by sika deer, became prominent, the areas with few P. jezoensis trees increased, and the forest floor became densely covered with Sasa nipponica, which is highly tolerant of sika deer browsing. In the western region, Sasamorpha borealis, which had previously covered the forest floor, was replaced by Skimmia japonica, which is not preferred by sika deer.

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  • 保全生態学研究

    保全生態学研究 14 (2), 263-278, 2009

    一般社団法人 日本生態学会

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