Journal article

Identifying environmental correlates of intraspecific genetic variation

KA Harrisson, JDL Yen, A Pavlova, ML Rourke, D Gilligan, BA Ingram, J Lyon, Z Tonkin, P Sunnucks



Genetic variation is critical to the persistence of populations and their capacity to adapt to environmental change. The distribution of genetic variation across a species' range can reveal critical information that is not necessarily represented in species occurrence or abundance patterns. We identified environmental factors associated with the amount of intraspecific, individual-based genetic variation across the range of a widespread freshwater fish species, the Murray cod Maccullochella peelii. We used two different approaches to statistically quantify the relative importance of predictor variables, allowing for nonlinear relationships: a random forest model and a Bayesian approach. The ..

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University of Melbourne Researchers


Awarded by ARC

Funding Acknowledgements

This work was supported by ARC Grant LP110200017 to Monash University, Flinders University of South Australia and the University of Canberra, with Partner Organization University of Montana. Funding and other support was contributed by industry Partner Organizations ACTEW Corporation, Department of Sustainability and Environment (Victoria) (now within Department of Environment, Land, Water & Planning), Fisheries Victoria (now within Department of Economic Development, Jobs, Transport and Resources), Melbourne Water and Fisheries New South Wales. KAH was supported by the Holsworth Wildlife Research Endowment and an Australian Postgraduate Award through Monash University. We thank Jim Thomson for statistical support and the associate editor and three anonymous reviewers for comments on earlier drafts.