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Habitat Differentiation Between Drosera anglica and D. rotundifolia in a Post-Mined Peatland, Northern Japan

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タイトル: Habitat Differentiation Between Drosera anglica and D. rotundifolia in a Post-Mined Peatland, Northern Japan
著者: Hoyo, Yuri 著作を一覧する
Tsuyuzaki, Shiro 著作を一覧する
キーワード: water level
Sphagnum mat
seedling establishment
habitat differentiation
発行日: 2014年
出版者: Springer
誌名: Wetlands
巻: 34
号: 5
開始ページ: 943
終了ページ: 953
出版社 DOI: 10.1007/s13157-014-0555-9
抄録: The preservation of endangered species requires clarifying habitat preferences through survival, growth and competitive ability. The determinants of habitat differentiation between the endangered species, Drosera anglica, and a widespread congener, D. rotundifolia, were compared. The effects of water level, Sphagnum mats and overstory vascular plants on Drosera distribution, recruitment and survival were monitored at a previously mined Sphagnum peatland. Seedling transplant experiments were conducted using different water levels. Seed-sowing experiments were conducted using different light intensities in three habitat-types: bare ground, Sphagnum mat and waterlogged surface. Distributions of D. anglica and D. rotundifolia were determined using survival at the seedling stage. D. anglica seedling recruitment and survival occurred more at lower water levels and/or lower plant cover, while D. rotundifolia seedlings established independent of these factors. In the greenhouse the seedlings of both species survived better at lower water levels but grew more slowly. D. anglica seedlings reduced their growth under shade more than D. rotundifolia. D. anglica showed low competitive light and nutrient ability on Sphagnum mats. Therefore, D. anglica was pushed to areas of high water levels where few competitors could establish. The habitat differentiation between D. anglica and D. rotundifolia originated from the interactions with Sphagnum mats.
Rights: Published online: 22 June 2014 : © Society of Wetland Scientist 2014. "The final publication is available at Springer via http://dx.doi.org/10.1007/s13157-014-0555-9"
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/60134
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 露崎 史朗

 

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