Constraints on the distribution of species abundances indicate universal mechanisms of community assembly

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Constraints on the distribution of species abundances indicate universal mechanisms of community assembly. / Matthews, Tom; Ulrich, Werner; Kubota, Yasuhiro.

In: Ecological Research, 11.12.2019.

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@article{7e17f600e3424af4857177d758435a31,
title = "Constraints on the distribution of species abundances indicate universal mechanisms of community assembly",
abstract = "Recently, Ulrich et al. (2018) introduced the Weibull distribution as a flexible approach to model the distribution of species abundances in ecological communities. They pointed to possible limitations in the realized parameter spaces of this distribution as possibly indicating ecological constraints on species abundances. Here, we explore this question in detail using three large global data sets on quantitatively assessed plant, invertebrate, and vertebrate communities. By fitting the Weibull distribution to these communities, we confirm that only a minor amount of the possible ranges in the scale and the shape parameters of the Weibull distribution are realized. Shapes of distributions become more similar across taxa with increasing species richness and average abundances. This finding points to stochastic explanations for SAD shapes, possibly linked to local colonization and extinction dynamics. We introduce the Weibull survival time parameter as a way to define the proportion of rare species in a community. This proportion increased with increasing species richness. ",
author = "Tom Matthews and Werner Ulrich and Yasuhiro Kubota",
year = "2019",
month = dec,
day = "11",
language = "English",
journal = "Ecological Research",
issn = "0912-3814",
publisher = "Springer",

}

RIS

TY - JOUR

T1 - Constraints on the distribution of species abundances indicate universal mechanisms of community assembly

AU - Matthews, Tom

AU - Ulrich, Werner

AU - Kubota, Yasuhiro

PY - 2019/12/11

Y1 - 2019/12/11

N2 - Recently, Ulrich et al. (2018) introduced the Weibull distribution as a flexible approach to model the distribution of species abundances in ecological communities. They pointed to possible limitations in the realized parameter spaces of this distribution as possibly indicating ecological constraints on species abundances. Here, we explore this question in detail using three large global data sets on quantitatively assessed plant, invertebrate, and vertebrate communities. By fitting the Weibull distribution to these communities, we confirm that only a minor amount of the possible ranges in the scale and the shape parameters of the Weibull distribution are realized. Shapes of distributions become more similar across taxa with increasing species richness and average abundances. This finding points to stochastic explanations for SAD shapes, possibly linked to local colonization and extinction dynamics. We introduce the Weibull survival time parameter as a way to define the proportion of rare species in a community. This proportion increased with increasing species richness.

AB - Recently, Ulrich et al. (2018) introduced the Weibull distribution as a flexible approach to model the distribution of species abundances in ecological communities. They pointed to possible limitations in the realized parameter spaces of this distribution as possibly indicating ecological constraints on species abundances. Here, we explore this question in detail using three large global data sets on quantitatively assessed plant, invertebrate, and vertebrate communities. By fitting the Weibull distribution to these communities, we confirm that only a minor amount of the possible ranges in the scale and the shape parameters of the Weibull distribution are realized. Shapes of distributions become more similar across taxa with increasing species richness and average abundances. This finding points to stochastic explanations for SAD shapes, possibly linked to local colonization and extinction dynamics. We introduce the Weibull survival time parameter as a way to define the proportion of rare species in a community. This proportion increased with increasing species richness.

M3 - Article

JO - Ecological Research

JF - Ecological Research

SN - 0912-3814

ER -