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    Impact of Stream Corridors on Breeding Populations of Rana luteiventris

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    2000_BartolettiF_THS_000235.pdf (1.494Mb)
    Author
    Bartoletti, Fredrick
    Advisor
    Grant Hokit; John Addis; Jack Oberweiser
    Date of Issue
    2000-04-01
    Subject Keywords
    western spotted frog, Rana luteiventris
    Metadata
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    URI
    https://scholars.carroll.edu/handle/20.500.12647/2833
    Title
    Impact of Stream Corridors on Breeding Populations of Rana luteiventris
    Type
    thesis
    Abstract
    The biodiversity on Earth is in a state of decline. Because the full extent of the problem is not known, model systems are needed as environmental indicators. Amphibians are considered good indicators of wetland ecosystems. Many authors have agreed that a key factor driving population dynamics in a fragmented landscape is the ability of animals to move between habitat fragments. I studied the effects that a stream corridor has on the patch occupancy of breeding populations of western spotted frog (Rana luteiventris). I quantified landscape and habitat parameters in both Lump Gulch and Gravely Range landscapes. The Lump Gulch landscape consisted of wetlands connected by stream corridors, whereas the Gravely Range landscape consisted of glaciated kettle ponds, with no stream connectance. The area of wetland sites and the distance between sites did not have an influence on the patch occupancy of the different landscapes. By eliminating these factors my results suggest that stream corridors significantly influence the distribution of Rana luteiventris by providing a means to occupy and reoccupy wetland sites. In essence, the stream corridors between patches are precious resources and it is imperative that we preserve these habitats which are a means of dispersal across landscapes.
    Degree Awarded
    Bachelor's
    Semester
    Spring
    Department
    Life & Environmental Sciences
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    • Life and Environmental Sciences Undergraduate Theses

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