![]() However, fires reduce food resources and vegetative cover, making the mice more susceptible to predators (Bushey 1987). ![]() Dipodomys ordii Ord’s Kangaroo Rat Habitat: Open sandy or soft soil areas with sparse cover of vegetation, such as sagebrush, forbs or grasses. Because they are able to retreat to underground burrows, these mice are not in much immediate danger from fires in sagebrush and bunch grass habitats. Family Heteromyidae Pocket Mice Perognathus parvus Great Basin Pocket Mouse Habitat: Sagebrush, bitterbrush, and rabbitbrush areas as well as grassy places and nearby grain fields. School of Environmental and Forest Sciences, University of Washington, Box 352100, Seattle, WA 98195-2100, USA. Great Basin pocket mouse (Perognathus parvus species group) A few of my colleagues, including three former graduate students, described a new species in this group and in so doing are forcing mammalogists and ecologists to use a new taxonomy (ecologists are not generally very happy about such things). Great Basin pocket mice are common and not endangered (Grzimek 1990).tectorum has become the most frequently collected autumn food resource for pocket mice in the northern Columbia Basin. On average, females collected a greater number of seed genera than males did, and pocket mice collected more seed genera as the autumn season progressed. Mean generic richness of collected seeds was higher in shrubsteppe than in new CRP habitats. tectorum constituted the majority of seeds collected from the cheek pouches. In all 3 habitat types - newly established Conservation Reserve Program (CRP) lands, older CRP lands, and shrubsteppe - B. Soft-Furred Pocket Mouse Breeds and Habitat: Arizona Pocket Mouse (Perognathus amplus): Arizona to Northern Mexico Great Basin Pocket Mouse (Perognathus. ![]() We analyzed the cheek pouch contents of Great Basin pocket mice ( Perognathus parvus) from 48 study sites in this region to quantify seed collection by this species and to determine the influence of habitat type on cheek pouch seed contents. Therefore, ecological patterns and dynamics on native shrubsteppe and reestablished grasslands are of high conservation interest. Washington is home to 12 of these species including, nine native species: Great Basin Pocket Mouse, Kangaroo Rat, Western and Pacific Jumping Mice, Bushy-tailed Woodrat, Northern Grasshopper Mouse, Deer Mouse, Keen’s Mouse and the Western Harvest Mouse and three non-native or introduced species: House Mouse, Norway Rat and Black Rat. Most of the native shrubsteppe habitat in the northern Columbia Basin of eastern Washington has been invaded by cheatgrass ( Bromus tectorum) or converted to agricultural lands.
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