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Project

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Project grant
Title [sv]
Ekologisk och genetisk växelverkan i gränsområden mellan arters utbredningar
Title [en]
Ecological and genetic dynamics in species boundaries
Abstract [sv]
Barriers to dispersal are responsible for much of life´s diversity. Studies of species boundaries are of fundamental importance to much of ecology, biogeography, and evolution. This project looks into the boundaries in a unique pine species complex. Pinus densata forms extensive pure forest on the southeastern Tibetan Plateau and represents a significant case of homoploid hybrid speciation in plants. It forms well-defined zones of marginal overlap with the two parental species. By integrating high resolution GIS techniques, ecological niche modelling with simultaneous assays of nuclear, chloroplast and mitochondrial genome of contrasting mode of inheritance in each tree from the boundaries, the project assesses (i) whether the species boundaries are accompanied by steep environmental transitions; (ii) the patterns of environmental heterogeneity within and across each boundary; (iii) what kinds of cytonuclear disequilibria are generated in each of the boundaries involving two different pairs of pine species; and (iv) the patterns of selective mating in each of the boundaries and whether they confer any adaptive consequence. By answering these questions, we achieve a better understanding of the relative importance of ecological and genetic processes to reproductive isolation and the persistence of species boundaries in plants.
Principal InvestigatorWang, Xiao-Ru
Coordinating organisation
Umeå University
Funder
Period
2012-01-01 － 2014-12-31
National Category
GeneticsEcologyEvolutionary Biology
Identifiers
DiVA, id: project:1152Project, id: 2011-03195_VR

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