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Habitat associations of rare species...

Welch, Nathan Ewart.

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Habitat associations of rare species: A case study using Columbia spotted frogs (Rana luteiventris) in Utah (Utah).

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Habitat associations of rare species: A case study using Columbia spotted frogs (Rana luteiventris) in Utah (Utah)./
作者:	Welch, Nathan Ewart.
面頁冊數:	62 p.
附註:	Source: Masters Abstracts International, Volume: 41-06, page: 1666.
Contained By:	Masters Abstracts International41-06.
標題:	Biology, Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1413855

Habitat associations of rare species: A case study using Columbia spotted frogs (Rana luteiventris) in Utah (Utah).
Welch, Nathan Ewart.

Habitat associations of rare species: A case study using Columbia spotted frogs (Rana luteiventris) in Utah (Utah). - 62 p.

Source: Masters Abstracts International, Volume: 41-06, page: 1666.

Thesis (M.S.)--Utah State University, 2003.

Conservation plans benefit from basic ecological information about factors that limit the distribution of focal species. This study illustrates two observational approaches used to investigate the ecology of the Columbia spotted frog (<italic> Rana luteiventris</italic>), a rare species in Utah. First, hypothesized frog-habitat associations were evaluated by comparing occupied and apparently unoccupied ponds. Data were analyzed using Akaike's Information Criterion to quantify evidence for hypotheses and to select predictive models. Although variable, results suggest frogs are more likely to be found in ponds that do not shrink in size seasonally, maintain a relatively constant seasonal water temperature, and have high littoral vegetation cover. Second, overwintering habitat was investigated using radio telemetry. Only 2 of 15 frogs retained their transmitters through the winter. The single overwintering site was characterized by shallow, open water, extensive woody debris, and a cobble substrate.Subjects--Topical Terms:

1017726
Biology, Ecology.

Habitat associations of rare species: A case study using Columbia spotted frogs (Rana luteiventris) in Utah (Utah).
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502 $a Thesis (M.S.)--Utah State University, 2003.
520 $a Conservation plans benefit from basic ecological information about factors that limit the distribution of focal species. This study illustrates two observational approaches used to investigate the ecology of the Columbia spotted frog (<italic> Rana luteiventris</italic>), a rare species in Utah. First, hypothesized frog-habitat associations were evaluated by comparing occupied and apparently unoccupied ponds. Data were analyzed using Akaike's Information Criterion to quantify evidence for hypotheses and to select predictive models. Although variable, results suggest frogs are more likely to be found in ponds that do not shrink in size seasonally, maintain a relatively constant seasonal water temperature, and have high littoral vegetation cover. Second, overwintering habitat was investigated using radio telemetry. Only 2 of 15 frogs retained their transmitters through the winter. The single overwintering site was characterized by shallow, open water, extensive woody debris, and a cobble substrate.
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650 4 $a Biology, Ecology. $3 1017726
650 4 $a Biology, Biostatistics. $3 1018416
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