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原文連結
論文資訊
- 類型：已發表論文
- 日期：2014-12-23
摘要
Since their introduction in 1995 and 1996, wolves have had effects on Yellowstone that ripple across the entire structure of the 食物網 that defines 生物多樣性 in the Northern Rockies ecosystem. Ecological interpretations of the wolves have generated a significant amount of debate about the relative strength of top-down versus bottom-up forces in determining herbivore and vegetation abundance in Yellowstone. Debates such as this are central to the resolution of broader debates about the role of natural enemies and 氣候 as forces that structure 食物網s and modify ecosystem function. Ecologists need to significantly raise the profile of these discussions; understanding the forces that structure 食物網s and determine 物種 abundance and the supply of ecosystem services is one of the central scientific questions
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