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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Nurse tree ： ウィキペディア英語版 Nurse tree A nurse tree is a larger, faster-growing tree that shelters a small, slower-growing tree or plant. The nurse tree can provide shade, shelter from wind, or protection from animals who would feed on the smaller plant. For example, the Norway Spruce (Picea abies) and Larch (Larix) can function as a nurse for hardwoods.〔(Northern Ireland, Planning Service Website. A Design Guide for Rural Northern Ireland. Appendix 3: Tree Species. )〕 In the Sonoran desert, Palo Verde, Ironwood or mesquite trees serve as nurse trees for young saguaro cacti. As the Saguaro grows and becomes more acclimated to the desert sun, the older tree may die, leaving the saguaro alone. In fact, as the Saguaro grows larger it may compete for resources with its nurse tree, hastening its death. Consequently, young saguaros are often seen near trees, but old saguaros are not.〔(National Park Service. How Saguaros Grow. )〕 ==References== *John Vandermeer. Saguaros and Nurse Trees: A New Hypothesis to Account for Population Fluctuations. The Southwestern Naturalist, Vol. 25, No. 3 (Nov. 14, 1980), pp. 357–360. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Nurse tree」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.