Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/22021
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Fine-scale spatial genetic structure across a strong environmental gradient in the saltmarsh plant Puccinellia maritima
Authors: Rouger, Romuald
Jump, Alistair
Contact Email: a.s.jump@stir.ac.uk
Keywords: Puccinellia maritima
Saltmarsh
Polyploidy
Microsatellite
Genetic structure
sPCA
Issue Date: Jul-2015
Publisher: Springer
Citation: Rouger R & Jump A (2015) Fine-scale spatial genetic structure across a strong environmental gradient in the saltmarsh plant Puccinellia maritima, Evolutionary Ecology, 29 (4), pp. 609-623.
Abstract: Saltmarsh forms the transition between maritime and terrestrial environments where biotic and abiotic conditions vary substantially along a gradient in elevation. Theoretical and empirical population genetics studies have focused on the influence of environmental gradients on intra-specific genetic variation. Contrastingly, only a few studies have focused on genetic variation in saltmarsh plants, despite the potentially strong influence of environmental gradients shaping diversity in these species. In the present paper, we assess the genetic structure of the saltmarsh plant Puccinellia maritima collected across an elevation gradient in restored and natural saltmarsh. Both spatial autocorrelograms of genetic variation and spatial analysis of principal components detected genetic structurein the natural saltmarsh organized along the gradient in elevation, yet no such pattern was identified considering distance between individuals without taking elevation into account. In combination with previous phenotypic analyses, our results imply that ecological divergence likely plays a key role in shaping genetic structure within saltmarsh species. Comparison of restored and natural saltmarsh indicated that interspecific competition plays an important role in shaping the genetic structure observed on the natural saltmarsh. The results of this study demonstrate that saltmarshes are valuable models in which to test effects of ecological differentiation and, by extension, provide a better understanding of the functioning of this threatened environment.
Type: Journal Article
URI: http://hdl.handle.net/1893/22021
DOI Link: http://dx.doi.org/10.1007/s10682-015-9767-6
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: University of Stirling
Biological and Environmental Sciences

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