扰动(地质)
中间干扰假说
生态学
物种丰富度
天蓬
物种多样性
雨林
航程(航空)
环境科学
大气科学
地理
生物
物理
古生物学
复合材料
材料科学
作者
Jean‐François Molino,Daniel Sabatier
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2001-11-23
卷期号:294 (5547): 1702-1704
被引量:378
标识
DOI:10.1126/science.1060284
摘要
The "intermediate disturbance hypothesis," which postulates maximum diversity at intermediate regimes of disturbance, has never been clearly proved to apply to species-rich tropical forest tree communities and to local-scale canopy disturbances that modify light environments. This hypothesis was tested on a sample of 17,000 trees in a Guianan forest, 10 years after a silvicultural experiment that added to natural treefall gaps a wide range of disturbance intensities. Species richness, standardized to eliminate density effects, peaked at intermediate disturbance levels, particularly when disturbance intensity was estimated through the percentage of stems of strongly light-dependent species.
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