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    Association of Wetland Area with Breeding Activity for Multiple Amphibian Species

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    2000_LaselleB_THS_000222.pdf (1.524Mb)
    Author
    Laselle, Brooks
    Advisor
    Grant Hokit; Jack Oberweiser; Joan Stottlemyer
    Date of Issue
    2000-04-01
    Subject Keywords
    Ambystoma macrodactylum, long-toed salamander, Bufo boreas, Western toad, Rana luteiventris, spotted frog, habitat, Montana
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    URI
    https://scholars.carroll.edu/handle/20.500.12647/2826
    Title
    Association of Wetland Area with Breeding Activity for Multiple Amphibian Species
    Type
    thesis
    Abstract
    The populations of many amphibian species appear to be in decline. The loss of amphibians contributes to the overall loss of biodiversity that is occurring on a global scale. Amphibians are well-known bioindicators and can perhaps aid in # pinpointing factors responsible for the loss of biodiversity. Habitat patch size is a crucial variable to species persistence. I examined the relationship between wetland area and population occupancy for three amphibian species of the Western Montana Rockies: Ambystoma macrodactylum (long-toed salamander), Bufo boreas (Western toad), and Rana luteiventris (spotted frog). A logistic regression analysis revealed significant associations between increasing wetland area and breeding activity for spotted frogs and long-toed salamanders. I observed a threshold wetland area required to sustain breeding populations, and suggest that this minimum area is essential for amphibian persistence. Although a significant association was not observed for Western toads, this absence was most likely due to small sample size.
    Degree Awarded
    Bachelor's
    Semester
    Spring
    Department
    Life & Environmental Sciences
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    • Life and Environmental Sciences Undergraduate Theses

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