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  • Frog occupancy of polluted wetlands in urban landscapes

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    SieversPUB6120.pdf (1.740Mb)
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    Accepted Manuscript (AM)
    Author(s)
    Sievers, Michael
    Hale, Robin
    Swearer, Stephen E
    Parris, Kirsten M
    Griffith University Author(s)
    Sievers, Michael K.
    Year published
    2019
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    Abstract
    Urban sprawl and the rising popularity of water‐sensitive urban design of urban landscapes has led to a global surge in the number of wetlands constructed to collect and treat stormwater runoff in cities. However, contaminants, such as heavy metals and pesticides, in stormwater adversely affect the survival, growth, and reproduction of animals inhabiting these wetlands. A key question is whether wildlife can identify and avoid highly polluted wetlands. We investigated whether pond‐breeding frogs are attempting to breed in wetlands that affect the fitness of their offspring across 67 urban wetlands in Melbourne, Australia. ...
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    Urban sprawl and the rising popularity of water‐sensitive urban design of urban landscapes has led to a global surge in the number of wetlands constructed to collect and treat stormwater runoff in cities. However, contaminants, such as heavy metals and pesticides, in stormwater adversely affect the survival, growth, and reproduction of animals inhabiting these wetlands. A key question is whether wildlife can identify and avoid highly polluted wetlands. We investigated whether pond‐breeding frogs are attempting to breed in wetlands that affect the fitness of their offspring across 67 urban wetlands in Melbourne, Australia. Frog species richness and the concentration of contaminants (heavy metals and pesticides) were not significantly related, even in the most polluted wetlands. The proportion of fringing vegetation at a wetland had the greatest positive influence on the number of frog species present and the probability of occurrence of individual species, indicating that frogs inhabited wetlands with abundant vegetation, regardless of their pollution status. These wetlands contained contaminant levels similar to urban wetlands around the world at levels that reduce larval amphibian survival. These results are, thus, likely generalizable to other areas, suggesting that urban managers could inadvertently be creating ecological traps in countless cities. Wetlands are important tools for the management of urban stormwater runoff, but their construction should not facilitate declines in wetland‐dependent urban wildlife.
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    Journal Title
    Conservation Biology
    DOI
    https://doi.org/10.1111/cobi.13210
    Copyright Statement
    © 2018 Society for Conservation Biology. This is the peer reviewed version of the following article: Frog occupancy of polluted wetlands in urban landscapes, Conservation Biology, AOV 2018, which has been published in final form at DOI. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving (http://olabout.wiley.com/WileyCDA/Section/id-828039.html)
    Note
    This publication has been entered into Griffith Research Online as an Advanced Online Version.
    Subject
    Environmental sciences
    Environmental management
    Biological sciences
    Freshwater ecology
    Agricultural, veterinary and food sciences
    Publication URI
    http://hdl.handle.net/10072/382023
    Collection
    • Journal articles

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