WOLVES, MOOSE, AND TREE-RINGS ON ISLE ROYALE
WOLVES, MOOSE, AND TREE-RINGS ON ISLE ROYALE
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DOI：
10.1126/science.266.5190.1555
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发表时间：
1994-12-02
期刊：
影响因子：
56.9
通讯作者：
PETERSON, RO
中科院分区：
文献类型：
--
作者：
MCLAREN, BE;PETERSON, RO
对密歇根州皇家岛国家公园树木生长的调查揭示了食草动物和食肉动物对植物在一个紧密相连的食物链中的影响。植物生长速率调节动物密度周期和初级生产力的年度变化，只有当狼捕食草食动物释放。Isle Royale的树木年代学补充了关于水生系统中食物链控制的丰富文献，这些文献通常支持营养级联模型。这项研究提供了森林生态系统自上而下控制的证据。
Investigation of tree growth in Isle Royale National Park in Michigan revealed the influence of herbivores and carnivores on plants in an intimately linked food chain. Plant growth rates were regulated by cycles in animal density and responded to annual changes in primary productivity only when released from herbivory by wolf predation. Isle Royale's dendrochronology complements a rich literature on food chain control in aquatic systems, which often supports a trophic cascade model. This study provides evidence of top-down control in a forested ecosystem.