A landscape measure of urban stormwater runoff effects is a better predictor of stream condition than a suite of hydrologic factors
Matthew J Burns, Christopher J Walsh, Tim D Fletcher, Anthony R Ladson, Belinda E Hatt
ECOHYDROLOGY | WILEY | Published : 2015
Restoration and protection of urban stream ecosystems require knowledge of the primary causes of their degradation. Conventional stormwater drainage has been identified as a primary source of stress to streams, but it remains unclear if the proximal stressor to stream biota can be represented by flow regime alone or requires a metric integrating the range of stressors associated with stormwater runoff or with urban land use more generally. We used the information-theoretic approach to assess whether various hydrologic indicators better predicted SIGNAL (a biotic index using macroinvertebrate families) than did attenuated imperviousness (AI; a landscape measure of connected imperviousness tha..View full abstract
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Awarded by Australian Research Council
The following people are thanked: Michael Sammonds and Edward Tsyrlin for their critical comments and Upula Maheepala and Ken MacMahon from Melbourne Water for the provision of streamflow data. Burns was supported by an Australian Postgraduate Award and Fletcher by an Australian Research Council Future Fellowship (FT100100144). The preparation of this paper was supported by the Melbourne Waterway Research Practice Partnership, funded by Melbourne Water.