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    Effects of artificial light at night on the foraging behavior of an endangered nocturnal mammal

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    Issue Date
    2020
    Author
    Shier, Debra M.
    Bird, Alicia K.
    Wang, Thea B.
    Subject
    KANGAROO RATS
    LIGHT
    WILDLIFE CONSERVATION
    FORAGING
    HABITATS
    CALIFORNIA
    Journal title
    Environmental Pollution
    Volume
    263
    Issue
    Part A
    Begin page
    114566
    
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    DOI
    10.1016/j.envpol.2020.114566
    Alternative link
    http://www.sciencedirect.com/science/article/pii/S0269749119366059
    Abstract
    ...The endangered Stephens’ kangaroo rat (SKR), Dipodomys stephensi, is a nocturnal rodent threatened by habitat destruction from urban expansion. The degree to which ALAN impacts their recovery is unknown....
    Description
    Artificial lighting is one of the fastest growing environmental pollutants, with the potential for devastating long-term ecosystem level consequences. Artificial night lighting has been shown to directly and indirectly impact how animals interact with their environment. It can affect physiological processes by altering the immune response, stimulating stress hormones and shifting circadian rhythms. Behaviorally, night lighting has been shown to influence movement patterns, altering reproductive behavior and foraging energetics. We studied the impacts of artificial night lighting on the endangered Stephens’ kangaroo rat (SKR) foraging behavior. We found that artificial light negatively impacts foraging decisions of endangered kangaroo rats. Light type (flood vs bug lights), distance from light source and moon phase all interact to affect patch use. Understanding impacts of disturbance, like ALAN, is critical because the cumulative effects of urbanization may lead to unsuitable habitat and the loss of at-risk species.
    URI
    http://hdl.handle.net/20.500.12634/324
    Type
    Article
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.envpol.2020.114566
    Scopus Count
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    Conservation Science Publications

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