Effects of Black-Tailed Prairie Dogs on Reptiles and Amphibians in Kansas Shortgrass Prairie

Species diversity and abundance of reptiles and amphibians were measured on and off black-tailed prairie dog (Cynomys ludovicianus) colonies to determine the extent to which herpetological species composition in a shortgrass prairie ecosystem is affected by presence of blacktailed prairie dog coloni...

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Published in:The Southwestern naturalist Vol. 46; no. 2; pp. 171 - 177
Main Authors: Kretzer, Justin E., Cully, Jack F.
Format: Journal Article
Language:English
Published: Southwestern Association of Naturalists 01-06-2001
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Summary:Species diversity and abundance of reptiles and amphibians were measured on and off black-tailed prairie dog (Cynomys ludovicianus) colonies to determine the extent to which herpetological species composition in a shortgrass prairie ecosystem is affected by presence of blacktailed prairie dog colonies. Ten species of reptiles and 3 species of amphibians were captured. Total amphibian and reptile abundance did not differ between prairie dog colonies and noncolonized shortgrass prairie sites, but species composition did. Mean species richness, evenness, and diversity for reptiles and amphibians were not different between treatments; however, diversity of both treatments combined was considerably higher than diversity on shortgrass prairie without prairie dogs. The mosaic pattern of prairie dog colonies enhances landscape heterogeneity and contributes to greater reptile and amphibian diversity in the shortgrass prairie biome of western Kansas. /// Se midieron la diversidad y la abundancia de los reptiles y anfibios dentro y fuera de colonias de perritos llaneros de cola negra (Cynomys ludovicianus) para determinar hasta qué punto la presencia de las colonias influye en las especies de herpetológicas en un ecosistema de hierba corta. Diez especies de reptiles y tres de anfibios fueron capturadas. La abundancia total de éstos animales fue igual dentro de las colonias como en los sitios no colonizados, pero la composición de las especies fue diferente. El promedio de la riqueza, la diversidad, y el emparejamiento de las especies herpetológicas no diferó entre los tratamientos. Sin embargo, hubo mayor diversidad en ambos tratamientos combinados que en pradera de hierba corta sin perritos llaneros. El patrón mosaico de las colonias de perritos llaneros aumenta la heterogeneidad del paisaje y contribuye a una diversidad más amplia de reptiles y anfibios en el ecosistema de hierba corta en el oeste de Kansas.
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ISSN:0038-4909
1943-6262
DOI:10.2307/3672525