[Download] "Association of Black Tailed Prairie Dogs (Cynomys Ludovicianus) with Playa Lakes and a New Approach to Estimating Size of Populations (Report)" by Southwestern Naturalist ~ eBook PDF Kindle ePub Free
eBook details
- Title: Association of Black Tailed Prairie Dogs (Cynomys Ludovicianus) with Playa Lakes and a New Approach to Estimating Size of Populations (Report)
- Author : Southwestern Naturalist
- Release Date : January 01, 2009
- Genre: Life Sciences,Books,Science & Nature,
- Pages : * pages
- Size : 199 KB
Description
The conservation and management of black-tailed prairie dogs (Cynomys ludovicianus) has been, and continues to be, a contentious conservation issue. The species was found to warrant federal protection under the Endangered Species Act, but was precluded due to higher-priority species (United States Department of the Interior, 2000). More recently, it was removed as a candidate species (United States Department of the Interior, 2004), but continues to be an object of litigation (e.g., L. McCain et al., in litt.). The legal focus on prairie dogs has led state, federal, and tribal wildlife agencies to assess the status of black-tailed prairie dogs, and develop conservation and management plans (Luce, 2003). The historical distribution of prairie dogs in Texas is primarily the southern Great Plains region, including the southern High Plains, which, prior to agricultural development, was dominated by prairie grasslands. Dispersed across the southern High Plains are 20,000 playa lakes; shallow, circular depressions that serve as natural drainage systems in the region (Smith, 2003). With rare exception, playas are ephemeral and fill with water through precipitation and through runoff from agricultural irrigation (Smith, 2003). Playas become completely dry during periods of little rainfall, but can rapidly flood during wet periods. Thus, agricultural interests often view playas as a management challenge (Schwiesow, 1965; Smith, 2003). Often, playa basins are considered unsuitable for production of agricultural crops and are left uncultivated. As a result, many playa basins and their grassland slopes function as oases of wildlife habitat in an otherwise inhospitable mosaic of agricultural lands (Haukos and Smith, 1992; Fish et al., 1995; Smith, 2003).
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