Winter Forage Selection in White-Tailed Deer at High Density: Balsam Fir is the Best of a Bad Choice
Winter Forage Selection in White-Tailed Deer at High Density: Balsam Fir is the Best of a Bad Choice
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高密度白尾鹿冬季饲料选择：香脂冷杉是最好的选择
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
S. Côté
中科院分区：
文献类型：
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作者：
Daniel G. Sauvé;S. Côté
摘要我们评估了加拿大魁北克安蒂科斯蒂岛白尾鹿（Odocoileus virginianus）的冬季饲料选择。安蒂科斯蒂的冬季栖息地退化，高密度的自由放养鹿消耗70%的香脂冷杉（冷杉）和20%的白色云杉（云杉），尽管云杉比冷杉更容易获得。当两种树木的可用性相等时，鹿吃了89.9%的香脂冷杉和10.1%的白色云杉。鹿不吃碎树枝比完整的树枝。纤维含量和缩合单宁在白色云杉比香脂冷杉。鹿对冷杉的偏好不是基于质地，而是更有可能基于植物成分，因此我们得出结论，鹿在使用任何大量的白色云杉之前几乎会消除冷杉。因此，需要采取管理行动，加强香脂冷杉的再生。
Abstract We assessed winter forage selection by white-tailed deer (Odocoileus virginianus) on Anticosti Island, Quebec, Canada, using cafeteria-feeding trials. Winter habitat on Anticosti is degraded and free-ranging deer at high densities consume 70% balsam fir (Abies balsamea) and 20% white spruce (Picea glauca), even though spruce is much more available than fir. Deer ate 89.9% balsam fir and 10.1% white spruce when the availability of both trees was equal. Deer did not eat shredded twigs more than intact twigs. Fiber content and condensed tannins were greater in white spruce than in balsam fir. Deer preference for fir was not based on texture but, more likely, on plant constituents, so we concluded that deer will nearly eliminate fir before they use any significant amount of white spruce. Management actions, therefore, need to be undertaken to enhance balsam fir regeneration.