The effect of spatially correlated environments on genetic diversity-area relationships

被引：4

作者：

Neto, Elias D. C. ^{[2
]}

de Oliveira, Viviane M. ^{[1
]}

Rosas, Alexandre ^{[3
]}

Campos, Paulo R. A. ^{[1
]}

机构：

[1] Univ Fed Rural Pernambuco, Dept Fis, BR-52171900 Recife, PE, Brazil

[2] Univ Fed Rural Pernambuco, Dept Estat & Informat, BR-52171900 Recife, PE, Brazil

[3] Univ Fed Paraiba, Dept Fis, BR-58059900 Joao Pessoa, Paraiba, Brazil

来源：

JOURNAL OF THEORETICAL BIOLOGY | 2011年 / 288卷

关键词：

Speciation; Species-area relationship; NK model; Spatial heterogeneity; SPECIES RICHNESS; CANONICAL DISTRIBUTION; NICHE CONSERVATISM; SPECIATION; PATTERNS; ECOLOGY; MODEL; PRODUCTIVITY; BIOGEOGRAPHY; COMMONNESS;

D O I：

10.1016/j.jtbi.2011.08.019

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Understanding the spatial patterns of genetic diversity and what causes them is an important outstanding question in ecology. Here we investigate the roles of spatial heterogeneity and system area in generating genome diversity, and study its dependence with sampled area. We study an individual-based model that incorporates natural selection on the habitat type and compare the effects of asexual and sexual reproductions. A key ingredient of the model is the possibility to tune the level of spatial heterogeneity among the habitats. Our results corroborate either the bi-phasic or tri-phasic scenarios, one phase corresponding to a power law regime, for the diversity-area relationship in both sexual and asexual populations, being the shape of the curve influenced by mutation rates and spatial correlation. These observations are verified for distinct sets of parameter values. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：57 / 65

页数：9

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