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原文連結
論文資訊
- 類型：已發表論文
- 日期：2009
摘要
The covariance among a range of 20 網絡 structural properties of 食物網s plus net primary productivity was assessed for 14 published 食物網s using principal components analysis. Three primary components explained 84% of the variability in the data sets, suggesting substantial covariance among the properties employed in the literature. The first dimension explained 48% of the variance and could be ascribed to connectance, covarying significantly with the proportion of intermediate 物種 and characteristic path length. The second dimension explained 19% and was related to 營養級 物種 richness. The third axis explained 17% and was related to ecosystem net primary productivity. A distinct opposite clustering of connectance, the proportion of intermediate 物種, and mean 營養級 level vs. the proportion of top and ba
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