Journal article

Longer duration flooding reduces the growth and sexual reproductive efforts of a keystone wetland tree species

Joe Greet, Sarah Fischer, Kathryn Russell

WETLANDS ECOLOGY AND MANAGEMENT | SPRINGER | Published : 2020

Abstract

Wetland forests are dependent on flooding; however, general relationships between flooding and tree responses have been elusive, partly due to often coarse characterisations of flooding. In a novel approach, we used individual tree-scale water level data to assess the effect of flooding duration on a keystone wetland tree species. We surveyed 140 Eucalyptus camphora (Mountain Swamp Gum) trees across a swamp forest in both 2012 and 2019. We used TUFLOW to model daily water levels for the period from 2009 to 2019 and determined the flooding history for each surveyed tree. We then assessed the effect of flooding duration and tree size on the survival, growth, condition and extent of sexual repr..

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Grants

Awarded by Greening Australia


Funding Acknowledgements

We would like to acknowledge the Wurundjeri poeple as the traditional owners of the land on which this study was conducted. We thank: Anna Backstrom and Damien Cook for sharing their data from the 2012 survey; Elise King and Joseph Hall for field assistance; and Raphael Trouve and two anonymous reviewers for commenting on earlier versions of the manuscript. This research was funded by the Australian Research Council and partners Melbourne Water, Parks Victoria, Zoos Victoria and Greening Australia (LP150100682). The survey work was conducted under a research permit granted by the Department of Environment, Land, Water and Planning (Permit No. 10008063).