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  • Austral amphibians: Gondwanan relicts in peril

    Author(s)
    Hero, Jean-Marc
    Roberts, J. Dale
    Hoskin, Conrad J.
    Lowe, Katrin
    Narayan, Edward
    Bishop, Phil J.
    Griffith University Author(s)
    Hero, Jean-Marc
    Lowe, Katrin
    Narayan, Edward J.
    Year published
    2015
    Metadata
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    Abstract
    Over 30% of Australasian amphibians are currently threatened with extinction. While habitat loss, introduced species and disease have been identified as major threats, the impacts of climate change are understudied. Threatened frogs fall into distinct biogeographical and ecological groupings that can be linked to specific threats (e.g. mountain- top endemics and climate change; stream-dwelling wet forest frogs and disease; and small island endemics and feral pests). The impacts of gradual climate change over millions of years has isolated specific species into climatic refugia (resulting in restricted geographic ranges), ...
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    Over 30% of Australasian amphibians are currently threatened with extinction. While habitat loss, introduced species and disease have been identified as major threats, the impacts of climate change are understudied. Threatened frogs fall into distinct biogeographical and ecological groupings that can be linked to specific threats (e.g. mountain- top endemics and climate change; stream-dwelling wet forest frogs and disease; and small island endemics and feral pests). The impacts of gradual climate change over millions of years has isolated specific species into climatic refugia (resulting in restricted geographic ranges), which combined with the ecological traits of these species (e.g. small clutch-size) dramatically increases extinction risk. Australasian frogs demonstrate intrinsic links between biogeographic history, species ecology and conservation status. The solutions to most threats are clear at a broad level, stop land clearing, reduce CO2 emissions and control feral animals; however, declines linked to the disease chytridiomycosis are not easily resolved. Chytridiomycosis is not a universal threat and understanding the causes of variation in impact is critically important. While the threats of land clearing, disease and introduced species are regional and/or species specific, the impacts of climate change must be examined carefully as all species are likely to affected. Here we cover these issues for Australasian frogs, presenting regional examples that highlight threats and avenues for future research and management.
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    Book Title
    Austral Ark: The State of Wildlife in Australia and New Zealand
    DOI
    https://doi.org/10.1017/CBO9781139519960.023
    Subject
    Population ecology
    Publication URI
    http://hdl.handle.net/10072/159923
    Collection
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