Relationship of genetic diversity and niche centrality: A survey and analysis

Andrés Lira-Noriega, Joseph D. Manthey

Research output: Contribution to journalArticlepeer-review

80 Scopus citations

Abstract

The distribution of genetic diversity within and among populations in relation to species' geographic ranges is important to understanding processes of evolution, speciation, and biogeography. One hypothesis predicts that natural populations at geographic range margins will have lower genetic diversity relative to those located centrally in species' distributions owing to a link between geographic and environmental marginality; alternatively, genetic variation may be unrelated with geographic marginality via decoupling of geographic and environmental marginality. We investigate the predictivity of geographic patterns of genetic variation based on geographic and environmental marginality using published genetic diversity data for 40 species (insects, plants, birds, mammals, worms). Only about half of species showed positive relationships between geographic and environmental marginality. Three analyses (sign test, multiple linear regression, and meta-analysis of correlation effect sizes) showed a negative relationship between genetic diversity and distance to environmental niche centroid, but no consistent relationship of genetic diversity with distance to geographic range center.

Original languageEnglish
Pages (from-to)1082-1093
Number of pages12
JournalEvolution
Volume68
Issue number4
DOIs
StatePublished - Apr 2014

Keywords

  • Central-peripheral hypothesis
  • Ecological niche
  • Genetic diversity
  • Geographic range

Fingerprint Dive into the research topics of 'Relationship of genetic diversity and niche centrality: A survey and analysis'. Together they form a unique fingerprint.

Cite this