Is the central-marginal hypothesis a general rule? Evidence from three distributions of an expanding mangrove species, Avicennia germinans (L.) L.

doi:10.1111/mec.15365

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Article

Is the central-marginal hypothesis a general rule? Evidence from three distributions of an expanding mangrove species, Avicennia germinans (L.) L.

Molecular ecology - 1 Feb 2020

Kennedy John Paul, Preziosi Richard F, Rowntree Jennifer K, Feller Ilka C

Abstract excerpt

The central-marginal hypothesis (CMH) posits that range margins exhibit less genetic diversity and greater inter-population genetic differentiation compared to range cores. CMH predictions are based on long-held "abundant-centre" assumptions of a decline in ecological conditions and abundances towards range margins. Although much empirical research has confirmed CMH, exceptions remain almost as common. We contend...

Topics

Avicennia
Climate Change
Ecosystem
Gene Flow
Genetic Variation
Genetics, Population
Microsatellite Repeats

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PMID: 31990426
DOI: 10.1111/mec.15365
PMCID: PMC7065085

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