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Subject Index, Byu Studies

BYU Studies

No abstract provided.

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Antonio Lebolo: Excavator Of The Book Of Abraham, H. Donl Peterson

BYU Studies

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A Sophic And A Mantic People, H. Curtis Wright

BYU Studies

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Ecological Relationships Of Curlleaf Mountain-Mahogany (Cercocarpus Ledifolius Nutt.) Communities In Utah And Implications For Management, James N. Davis, Jack D. Brotherson

Great Basin Naturalist

Curlleaf mountain-mahogany is a widely distributed shrubby tree of western North America. Well-developed stands are most often found on warm, dry, rocky ridges and slopes at high elevations on mostly southern exposures. It can, however, be found onall exposures. The species appears to be indifferent to substrate with soils which are invariably shallow and of low fertility. However, the nitrogen-fixing root nodules help overcome soil deficiencies. This highly palatable species is preferred by mountain sheep, mountain goats, deer, and elk. Its nutritive value (about 12% protein) and digestibility ratings (around 50%) in the winter are high when compared with most …

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Evolutionary Differentiation Within The Northern Great Basin Pocket Gopher, Thomomys Townsendii. Ii. Genetic Variation And Biogeographic Considerations, Mary Anne Rogers

Great Basin Naturalist

Genetic variation across the known geographic range of Thomomys townsendii was examined by starch gel electrophoresis and nondifferentially stained karyotypes. All specimens examined had a diploid number of76, but some populations possessed one pair of acrocentric chromosomes in an otherwise biarmed karyotype. Electrophoretic analyses of 16 populations revealed Thomomys townsendii to be among the least variable of pocket gopher species studied. Of 27 loci examined, 17 were monomorphic and heterozygosity values were low (H = .000–.028, H¯ = .012). Genic differentiation between populations was also low (S = .896–.998, S¯ = .956) and revealed little concordance with current …

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Evolutionary Differentiation Within The Northern Great Basin Pocket Gopher, Thomomys Townsendii. I. Morphological Variation, Mary Anne Rogers

Great Basin Naturalist

Geographic and nongeographic variation in morphology was examined in Thomomys townsendii. A univariate analysis of external and cranial characters from a large population sample (66 adults; fusion of cranial sutures used as aging criteria) was used to assess variation among three adult age classes and between sexes. Only minor variation is apparent among age classes; however, sexual dimorphism is pronounced. Univariate and multivariate techniques were used to analyze external and cranial measurements and pelage characters for adults throughout the species range. These analyses show little to support the seven subspecific designations recognized by Davis (1937). The general pattern is …

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Bromus Invasions On The Nevada Test Site: Present Status Of B. Rubens And B. Tectorum With Notes On Their Relationship To Disturbance And Altitude, Richard Hunter

Great Basin Naturalist

Bromus rubens and Bromus tectorum are now nearly ubiquitous components of the Nevada Test Site (NTS) flora. Introduced to the western United States in the late 1800s, they spread through the Mojave and Great Basin deserts in the early twentieth century. Since quantitative studies began on the NTS in 1957; Bromus spp. have greatly increased in frequency and density. By 1988 both species occurred in many places at densities exceeding 1000 individuals per square meter. They may significantly increase flammability of the vegetation and reduce success of native ephemeral species.

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