Present state of conservation and the occurrence of endangered plant species in the Tanzawa Mountains, central Japan : an evaluation of deer-proof fences
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- Tamura Atsushi
- Kanagawa Prefecture Natural Environment Conservation Center
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- Irino Akio
- Kanagawa Prefecture Natural Environment Conservation Center
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- Katsuyama Teruo
- Kanagawa Prefectural Museum of Natural History
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- Aoto Koji
- NPO Tanzawa Nature Conservation Society
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- Okutsu Masaya
- NPO Tanzawa Nature Conservation Society
Bibliographic Information
- Other Title
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- ニホンジカにより退行した丹沢山地の冷温帯自然林における植生保護柵による希少植物の保護状況と出現に影響する要因の検討
- ニホンジカ ニ ヨリ タイコウ シタ タンザワ サンチ ノ レイオンタイ シゼンリン ニ オケル ショクセイ ホゴ サク ニ ヨル キショウ ショクブツ ノ ホゴ ジョウキョウ ト シュツゲン ニ エイキョウ スル ヨウイン ノ ケントウ
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Abstract
We examined the present state of endangered plant species found in 62 areas surrounded by deer-proof fences in nine cool temperate natural forests of the Tanzawa Mountains, central Japan. Data were used to evaluate the effects of deer-proof fences and the factors influencing the occurrence of endangered plant species. We found 20 endangered plant species inside the fences; for 15 of these species, the factor listed in the Kanagawa Red Data Book as causing decline was over-browsing by sika deer. In contrast, we only found six endangered plant species outside the fences. These data suggest that fences provide protection for endangered plant species. However, 10 species were observed only in one fenced area in one forest, and fewer than 10 individuals were found for eight species. Therefore, endangered plant species in fenced areas may become extinct because of environmental and demographic stochasticity. Fences require maintenance at least once per year, and monitoring of endangered plant species is necessary. A regression analysis that included the number of endangered plant species, the number of fences, investigation area, elevation, and past endangered plant species in nine forests indicated that the number of endangered plant species had a strong, positive correlation with past endangered plant species. Therefore, we concluded that fences need to be constructed in species hot spots, and surveys of species distributions are essential for protecting endangered plant species.
Journal
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- Japanese Journal of Conservation Ecology
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Japanese Journal of Conservation Ecology 16 (2), 195-203, 2011
The Ecological Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001205208206720
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- NII Article ID
- 110008761595
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- NII Book ID
- AA11857952
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- ISSN
- 24241431
- 13424327
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- NDL BIB ID
- 023439373
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Allowed
