NDLI: Life-history variation following habitat degradation associated with differing fine-scale spatial genetic structure in a rainforest cycad

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Life-history variation following habitat degradation associated with differing fine-scale spatial genetic structure in a rainforest cycad

Content Provider	Springer Nature Link
Author	Lopez Gallego, Cristina O’Neil, Pamela
Copyright Year	2009
Abstract	Habitat degradation can result in drastic environmental changes potentially affecting the life-history of populations and aspects of the reproductive biology and the genetic structure within and among populations. Here, we explore how life-history differences between subpopulations from contrasting habitats may affect mating availability, which in turn will indirectly affect the strength of spatial genetic structure within populations of a tropical rainforest cycad (Zamia fairchildiana). Subpopulations exposed to higher light availability in degraded-forest habitats had male individuals that grew faster, reproduced earlier, and invested more in reproduction than in native-forest habitat subpopulations. These differences in life history resulted in degraded-habitat subpopulations showing a higher proportion of reproductive adults and greater mate availability in a reproductive season. Subpopulations in the degraded habitat showed weaker SGS, i.e., a smaller slope in the linear regression of genetic relatedness on linear distance. Environmentally induced changes in life history and subsequent changes in the strength of the SGS after habitat degradation may have important consequences for population viability and should be of concern in conservation.
Starting Page	191
Ending Page	201
Page Count	11
File Format	PDF
ISSN	14383896
Journal	Population Ecology
Volume Number	52
Issue Number	1
e-ISSN	1438390X
Language	English
Publisher	Springer Japan
Publisher Date	2009-07-30
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Gene dispersal Genetic relatedness Mating availability Zamia fairchildiana Forestry Behavioural Sciences Evolutionary Biology Plant Sciences Zoology Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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