期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 109, 期 39, 页码 15829-15834出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1212883109
关键词
self-thinning; fluctuation scaling; Damuth's law; nonlinear least squares; spatial Taylor's law
资金
- US National Science Foundation [EF-1038337]
- Direct For Biological Sciences
- Emerging Frontiers [1038337] Funding Source: National Science Foundation
Two widely tested empirical patterns in ecology are combined here to predict how the variation of population density relates to the average body size of organisms. Taylor's law (TL) asserts that the variance of the population density of a set of populations is a power-law function of the mean population density. Density-mass allometry (DMA) asserts that the mean population density of a set of populations is a power-law function of the mean individual body mass. Combined, DMA and TL predict that the variance of the population density is a power-law function of mean individual body mass. We call this relationship variance-mass allometry (VMA). We confirmed the theoretically predicted power-law form and the theoretically predicted parameters of VMA, using detailed data on individual oak trees (Quercus spp.) of Black Rock Forest, Cornwall, New York. These results connect the variability of population density to the mean body mass of individuals.
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