| Abstract: | During 1997-1998, we undertook an aerial survey, with an aerial line-intercept technique, to estimate the extent of colonies of black-tailed prairie dogs (Cynomys ludovicianus) in the northern Great Plains states of Nebraska, North Dakota, South Dakota, and Wyoming. We stratified the survey based on knowledge of colony locations, computed 2 types of estimates for each stratum, and combined ratio estimates for high-density strata with average density estimates for low-density strata. Estimates of colony areas for black-tailed prairie dogs were derived from the average percentages of lines intercepting prairie dog colonies and ratio estimators. We selected the best estimator based on the correlation between length of transect line and length of intercepted colonies. Active colonies of black-tailed prairie dogs occupied 2,377.8 km2 i?? 186.4 SE, whereas inactive colonies occupied 560.4 i?? 89.2 km2. These data represent the 1st quantitative assessment of prairie-dog colonies in the northern Great Plains. The survey dispels popular notions that millions of square kilometers of colonies of black-tailed prairie dogs exist in the northern Great Plains and can form the basis for future survey efforts |
| Genre: | Article |
| ProdID: | 1001707 |
| Citation Author: | Sidle, J. G.; Johnson, D. H.; Euliss, B. R. |
| Citation Contributing Office: | Northern Prairie Wildlife Research Center |
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| Citation End Page: | 936 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Mammalogy |
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| Citation Number Of Pages: | 8 |
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| Citation Phsyical Description: | p. 928-936 |
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| Citation Search Results Text: | Estimated areal extent of colonies of black-tailed prairie dogs in the northern Great Plains; 2001; Article; Journal; Journal of Mammalogy; Sidle, J. G.; Johnson, D. H.; Euliss, B. R. |
| Citation Start Page: | 928 |
| Citation Volume: | 82 |
| Citation Year: | 2001 |
| Type: | citation/reference |
| Text: | Estimated areal extent of colonies of black-tailed prairie dogs in the northern Great Plains; 2001; Article; Journal; Journal of Mammalogy; Sidle, J. G.; Johnson, D. H.; Euliss, B. R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://www.npwrc.usgs.gov/resource/mammals/pdogcol/index.htm |
| Date Other: | Mon, 1 Jan 2001 00:00 -0600 |
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