. Biology of the Heteromyidae. Heteromyidae. Dipodomys merriami Dipodomys merriami Dipodomys merriami Dipodomys merriami ^^i~0~'\ Peromyscus eremicus PerogrfOthus formosus itodipus bai. Choetodipus baileyi Peromyscus maniculatus * ' Peromyscus maniculatus Choetodipus penicillatus Choetodipus penicillatus Choetodipus intermedius Microdipodops pollidus /^ N '^ -^ ' Reithrodontomys megalotis Perognothus amplus ''!fc:.t_\ Perognothus flavus Perognothus longimembris Perognothus longimembris ^ Fig. 7.—The species composition and morphologies of the abundant (> of total sample) granivorous rod
. Biology of the Heteromyidae. Heteromyidae. Dipodomys merriami Dipodomys merriami Dipodomys merriami Dipodomys merriami ^^i~0~'\ Peromyscus eremicus PerogrfOthus formosus itodipus bai. Choetodipus baileyi Peromyscus maniculatus * ' Peromyscus maniculatus Choetodipus penicillatus Choetodipus penicillatus Choetodipus intermedius Microdipodops pollidus /^ N '^ -^ ' Reithrodontomys megalotis Perognothus amplus ''!fc:.t_\ Perognothus flavus Perognothus longimembris Perognothus longimembris ^ Fig. 7.—The species composition and morphologies of the abundant (> of total sample) granivorous rodents that coexist to form diverse assemblages at selected sites in the four subdivisions of the North American Desert: Great Basin Desert, a sand dune in Fish Lake Valley, Nevada (dune 7 in Brown, 1973); Mojave Desert, desert shrub habitat near Johannesburg, San Bernardino Co., California (site 5 from Hafner, 1977); Sonoran Desert, upper Silverbell bajada northwest of Tucson, Arizona (from Petryszyn, 1982); Chihuahuan Desert, the Cave Creek Bajada near Portal, Arizona (Rodeo B from Brown, 1975). plays a major role in community organi- zation. Working in the Sonoran Desert of southern Arizona, Price (1978^?) observed that both D. merriami and three species of pocket mice {P. amplus, C. penicillatus, and C. baileyi) predictably altered their patterns of microhabitat use when the other species were removed or added to experimental en- closures. Larsen (1986) obtained similar re- sults in a natural experiment in the Great Basin Deserts of Utah and Nevada. He showed that in otherwise comparable hab- itats, D. ordii and D. merriami showed a higher variance in microhabitat use when fewer other heteromyid species were present locally. This suggests that interspecific in- teractions could influence microhabitat use and the local distribution of heteromyid species. Analyzing the effects of experimen- tal removal of kangaroo rats in the Chihua-. Please note that these images are extract
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