Three allometric relations of population density to body mass: theoretical integration and empirical tests in 149 food webs
Three allometric relations of population density to body mass: theoretical integration and empirical tests in 149 food webs
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DOI：
10.1111/j.1461-0248.2008.01236.x
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发表时间：
2008-11-01
期刊：
影响因子：
8.8
通讯作者：
Cohen, Joel E.
中科院分区：
文献类型：
--
作者：
Reuman, Daniel C.;Mulder, Christian;Cohen, Joel E.
预测群落食物网（以下简称网）中的物种种群密度-体重标度对于保护和了解群落结构非常重要。基于个体或物种，已经研究了非常不同类型的缩放。个体侧分布（ISD）描述了个体生物体质量的分布，而不考虑分类学，并包含与丰度谱相同的信息。局部大小-密度关系（LSDR）将重点放在物种上，绘制种群密度与物种平均体重的关系图。物种平均体重的分布（物种平均大小分布，SMSD）也很重要，但以前很少研究网。在这里，我们联合收割机和形式化的理论，几个作者预测：如何这三个描述是相关的，形式的LSDR和ISD，和网络之间的缩放变化。我们经验描述的SMSD的两个远洋，一个河口，和146土壤网的幂律和概括。我们测试了理论，发现它得到了广泛的验证。
Predicting species population density-body mass scaling in community food webs (henceforth webs) is important for conservation and to understand community structure. Very different types of scaling have been studied, based on either individuals or species. The individual side distribution (ISD) describes the distribution of individual-organism body masses regardless of taxonomy, and contains the same information as the abundance spectrum. Focusing instead on species, the local size-density relationship (LSDR) plots population densities vs. mean body masses of species. The distribution of species mean body masses (the species-mean-size distribution, SMSD) is also important but previously little studied in webs. We here combine and formalize theory of several authors to predict: how these three descriptions are related; the forms of the LSDR and ISD; and variation in scaling among webs. We describe empirically the SMSDs of two pelagic, one estuarine, and 146 soil webs by power laws and generalizations. We test theory and find it broadly validated.