Does dispersal control population densities in advection-dominated systems? A fresh look at critical assumptions and a direct test

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Funding Acknowledgements

This work was supported by a Discovery Grant from the Australian Research Council to BJD. We thank Jodie Street, David Ryan, Andrew Sharpe, Paul Reich and many part-time research assistants for carrying out fieldwork. Jodie Street and Andrew Sharpe processed samples and produced some of the analytical results reported here. We thank Goran Englund for some constructive, critical remarks about the data. The manuscript was improved by comments from the freshwater ecology research group at the University of Melbourne: Nicole Barbee, Jane Catford, Rob Hale, Ash Macqueen and Deb Thomas, and we thank two referees for their constructive comments.