Digital Commons Network^™

Scorpions Of The National Reactor Testing Station, Idaho, Dorald M. Allred

Great Basin Naturalist

During ecological studies in 1966 and 1967, 282 scorpions of Paruroctonus boreus (Girard) were collected in can pit-traps in 12 plant communities. The ideal habitat was in vegetated areas where the total ground cover was more than 85 percent, of which at least 60 percent was broad-leaf shrubs and 5 percent grasses. Populations of ants and spiders were highest where scorpions were most abundant. Scorpions were most active above ground during August, with about half as much activity during July. None were found prior to May or after September.

Local Distribution And Interspecies Interactions In Microtines, Grand Teton National Park, Wyoming, Tim W. Clark

Great Basin Naturalist

Some ecological relationships and interspecies interactions (i.e., habitat, foods, and reproduction) between Microtus pennsylvanicus pullatus, M. montanus nanus, M. longicaudus mordex, and Clethrionomys gapperi galei were investigated in Grand Teton National Park, Wyoming. Trapping was conducted from June–July, 1968 and May–July, 1969 yielding 110 M.p.p., 171 M.m.n., 17 M.l.n. and 41 C.g.g. Six plant communities were defined structurally; all communities contained voles but varied considerably in numbers of species and individuals. Analyses of stomach contents showed similar diets. Embryo counts indicated that there was no significant interspecies differences in litter sizes. Females of all species were pregnant in about equal …

Additional Records Of Mutillid Wasps From The Nevada Test Site, Dorald M. Allred

Great Basin Naturalist

No abstract provided.

Life History And Ecology Of The Great Basin Sagebrush Swift, Sceloporus Graciosus Graciosus Baird And Girard, 1852, Gary L. Burkholder

Theses and Dissertations

The sagebrush swift, Sceloporus graciosus graciosus, is abundant in the transitional zone of the Great Basin. As an intermediate link the the food chain, sagebrush swifts are preyed upon by snakes and hawks, and in turn are predators of small arthropods.

Habitat And Time Utilization Of A Pair Of Nesting Sharp-Shinned Hawks (Accipiter Striatus Velox) : A Telemetry Study, Joseph Belnap Platt

Theses and Dissertations

Telemetric observations were conducted on a pair of Sharp-Shinned Hawks (Accipiter striatus velox) nesting in Spanish Fork Canyon, Utah in 1972. The movements of both adults were monitored from the time their eggs hatched in late June until they left the study area in early August, fourty-two days later. A transmitter was also attached to one of the young at the time of fledging. The adult's main hunting area was a single plant community located 1600 meters from the nest. The male performed the majority of the foraging while the female spent the greatest part of her time at the …

Effects Of A Nuclear Detonation On Arthropods At The Nevada Test Site, Dorald M. Allred

Brigham Young University Science Bulletin, Biological Series

Fifty-three arthropod species were studied in an area affected by an underground nuclear detonation. These were represented by 10 species of ants, 17 beetles, 5 orthopterans, 4 scorpions, 6 solpugids, and 11 spiders (Table 16). Relative populations were determined prior to the detonation and at three periods after the detonation–(1) one and two months after (August and September 1962), (2) 11 months after (June 1963), and (3) 13 months after (August 1963). One and two months after the detonation, the number of species was reduced from the expected by 48 percent, by 52 percent after 11 months, and by 66 …

Records Of Coreidae (Hemiptera) From The Nevada Test Site, Dorald M. Allred

Great Basin Naturalist

No abstract provided.

An Ecological Survey Of The Algae Of Huntington Canyon, Utah, Lorin E. Squires, Samuel R. Rushforth, Carol J. Endsley

Brigham Young University Science Bulletin, Biological Series

A quantitative and ecological study of the algae of Huntington Canyon, Emery County, Utah, was conducted from March 1971 to April 1972. Net plankton, nannoplankton, periphyton, and visible attached algae were studied. Certain physical and chemical parameters in the waters of Huntington Creek and a small pond along its course were also measured.

Huntington Creek contains a wide diversity of genera and species of algae. Diatoms are the main constituent of the flora of this stream throughout the year. Hydrurus foetidus is prevalent in Huntington Creek from late winter to early summer, and filamentous blue green algae abound in the …

Growth And Development Of The Western Harvest Mouse, Reithrodontomys Megalotis Megalotis, Gary H. Richins

Theses and Dissertations

Growth rates, gestation period, litter size, reproductive age, sex ratios, and development were studied on 198 litters of Reithrodontomys megalotis megalotis. Growth was characterized by several standard skull and body measurements, and was partitioned into four phases of 1-3, 4-12, 13-22, and 23-70 days. Growth was best described by measurements of tail length, ear length, and dried eye lens weight. Reproductive activity began as early as 38 days for females and 59 days for males. Gestation period was 22 days and mean litter size was 3.83 (range 1-7). Sex ratio was 53.49% males to 46.51% females. Reproductive efficiency was 53.53%. …

Two New Species Of Gymnodamaeus From Colorado (Acarina: Cryptostigmata, Gymnodamaeidae), Tyler A. Woolley, Harold G. Higgins

Great Basin Naturalist

Gymnodamaeus plokosus and G. leurolomasus, n. spp., are described from soil at an ecological study site near Hayden, Colorado. Their relationship to allied species is discussed.

Neartic Desert Decticidae (Orthoptera). Part Ii. A New Genus And Species From Arizona, Ernest R. Tinkham

Great Basin Naturalist

Platyoplus, n. gen., is erected for P. gilaensis, n. sp., from the Gila Mountains, Yuma Co., Arizona. The method of preservation for these large, soft-bodied insects is described.

Aquatic Phycomycetes Of Lily Lake, Utah, Hugh M. Rooney, Kent H. Mcknight

Great Basin Naturalist

During the ice-free period from May to November on two successive summers water molds were collected on 14 different substrata placed in Lily Lake, a subalpine bog lake in the Uinta Mountains of Utah. Twenty-five collections yielded thirty-four species in 20 genera, 11 families, and 6 orders of aquatic Phycomycetes. Correlation of frequency presence of the species reported with physical and chemical characteristics of the lake showed that the number of species collected increased with an increase in water temperature and a decrease in oxygen content during June to August, reaching a peak in late July. Rhipidium americanum Thaxter (100 …

A Quantitative And Ecological Survey Of The Algae Of Huntington Canyon, Utah, Lorin E. Squires

Theses and Dissertations

A quantitative and ecological study of the algal flora of Huntington Canyon, Emery Co., Utah was conducted from March 1971 to April 1972. Data were collected concerning net plankton, nannoplankton, periphyton and visible attached algae. Certain physical and chemical parameters in the waters of Huntington Creek and a small pond along its course also were measured. The algal flora of Huntington Canyon contains a wide diversity of genera and species. Diatoms are the main constituent of the flora of this stream throughout the year. Hydrurus foetidus is prevalent in the creek in Huntington Canyon from late winter to early summer, …

A Study Of The Phylogenetic Relationships Of Agropyron Scribneri, Agropyron Trachycaulum, And Sitanion Hystrix, C. Lorenzo Pope

Theses and Dissertations

Agropyron scribneri Vasey (spreading wheatgrass) is endemic to the Rocky Mountains of the Intermountain West. Each distinct population is widely separeated by valley and desert floors. It is morphologically similar to the hybrid between Agropyron trachycaulum (Link) Malte and Sitanion hystrix between Agropyron trachycaulum (Link) Malte and Sitanion hystrix (Nutt.) J. G. Smith as well as the hybrid, A. trachycaulum x A. scribneri. It appears that A. scribneri may have originated de novo from hybidization products of A. trachycaulum and S. hystrix. Agropyron scribneri appears to be morphologically similar to the population of S. hysterix with which it is associated. …

Ecological Notes On Recently Described Myriapods From Nevada, Dorald M. Allred

Great Basin Naturalist

No abstract provided.

A Study Of Seed Germination And Establishment Of Seedlings Of Lodgepole Pine In Different Soil Types Under Certain Bog Conditions, Yun-Fan Yuan

Theses and Dissertations

Soil texture, organic matter content, and hydrogen-ion concentration of soil samples were determined to find the correlation between soil characteristics, seed germination and seedling establishment of Pinus contorta. Scarification and stratification were treatments used for determining germination requirements of dormant seeds. Seeds were planted in different soils and experiments were conducted to determine the effects of different light intensities, temperatures, and depths of the water table on apparent photosynthesis rate and seedling establishment. Soil samples, pine cones, and young trees needed for the experiments were collected near Lily Lake, in the Uintah Mountains. The greatest and the fastest germination was …

Environmental Factors That Influence The Timing Of A Cyclic En Masse Foraging Migration Of Ligia Occidentalis Dana (Crustacea: Isopoda) On The Northern Gulf Of California, J. Wanless Southwick

Theses and Dissertations

En masse foraging migrations of Ligia occidentalis Dana were conspicuous events on rocky beaches near Puerto Peñasco, Sonora, Mexico. Experiments were conducted to determine which factors of the environment contained the regulating rhythm for the migration, if indeed the event were cyclic. Experiments were conducted in the laboratory using a tide-simulation aquarium and in the field using mark and release techniques. A time-lapse photography system was used in the field to quantify isopod activity for comparison with environmental factors. A regular cycle for the foraging migration was found. It was in tune with both insolation and tidal cycles so that …

A Taxonomic Study Of Crotaphytus Collaris Between The Rio Grande And Colorado Rivers, William Ingram Iii, Wilmer W. Tanner

Brigham Young University Science Bulletin, Biological Series

Little work has been done previously on the taxonomy of Crotaphytus collaris baileyi. This and the demonstration by Fitch and Tanner that C. c. baileyi is a heterogeneous grouping prompted the present study. Only the populations of the type material, the Upper Colorado River Basin, and the Chihuahuan Desert were studied. Multivariate, variance, canonical and discriminant analyses of external characters were performed, and pattern-coloration characters were examined on living specimens.

The results of the analyses show significance between all three populations. The discriminant functions distinguished between the populations with 80% reliability and patternal characters were discriminatory with near 100% reliability. …

A Comprehensive Index To The Great Basin Naturalist, Volumes 1–30 Inclusive, 1939–1970, Vasco M. Tanner

Great Basin Naturalist

No abstract provided.

Vasco M. Tanner, C. Lynn Hayward

Great Basin Naturalist

No abstract provided.

Aquatic And Semi-Aquatic Plant Communities Of Utah Lake, Robert E. Coombs

Theses and Dissertations

The aquatic and semi-aquatic plant communities of Utah Lake, Utah County, Utah are discussed. This discussion includes the methods of describing and delimiting the major vascular plant communities, the descriptions of the present existent communities, and the determination of the vegetational changes, particularly since 1925. The vegetation around Utah Lake is divided into plant communities. Each community is discussed using: (a) quantitative data, (b) field observations, (c) general and specific locations of the community, and (d) interrelationships and trends of the community. Historical vegetational changes of Utah Lake plant communities are discussed. In this discussion, the plant communities described by …

Leptotyphlops Humilis In Death Valley, California, Fenton R. Kay

Great Basin Naturalist

No abstract provided.

Pinyon-Juniper Succession After Natural Fires On Residual Soils Of Mesa Verde, Colorado, James A. Erdman

Brigham Young University Science Bulletin, Biological Series

A mountain brush vegetation typified by Gambel oak (Quercus gambelii) and serviceberry (Amelanchier utahensis) dominates the uplands of Mesa Verde National Park. There is evidence that this brush element is a successional stage that has been maintained by repeated natural fires in a large part of the Mesa Verde landscape. This study was conducted to determine the role of fire in the region's ecology, the nature of the climax pinyon pine (Pinus edulis) and Utah juniper (Juniperus osteosperma) vegetation, and the major successional stages that lead to the climax condition.

Three postburn …

A Taxonomic And Ecological Study Of The Desmids Of Lily Lake, James L. Pederson

Theses and Dissertations

During the summero f 1964 a taxonomica and ecological study was made of the desmids (microscopic green algae) found in Lily Lake. The study site is a subalpine lake in the Wasatch National Forest of the Uinta Mountains, Utah. The lake is located about one-half mile west of Trial Lake at an elevation of approximately 10,000 feet. The lake is an acidic, cold, lentic bog pond characteristic of this region. Desmids were collected at weekly intervals from seven sampling sites. The water temperature, pH, dissolved oxygen, light conditions and length of day from sunrise to sunset were recorded at the …

A Study Of Conifer Invasion Into Meadows Surrounding Small Lakes And Ponds In The Trial Lake Region Of The Western Uinta Mountains, David Harvey Firmage

Theses and Dissertations

The object of this study was to determine whether or not Lodgepole pine is successfully invading meadows near ponds in the western Uinta Mountains as a preliminary step to the invasion of the Spruce-Fir climax forest. Line transects were established at three sites near Trial Lake extending from forest to wet meadow. Along these transects the soil was studied to determine percent organic matter, pH, depth to mineral soil, and texture. Also the depth of the water table was measured and the topography plotted. The age and size of the trees along the transect was determined, and the extent of …

Ecology Of The Pika (Ochotona Princeps Uinta) In The Uinta Mountains, Utah, Richard D. Bates

Theses and Dissertations

In North America, pikas (mammal genus Ochotona) are distributed throughout the western mountain ranges where they are mostly restricted to higher elevation talus slides. There are two species in North America, the Alaskan or Collared Pika (Ochotona collaris Nelson) and the American Pika (Ochotona princeps Richardson). The former is found north of 58 degrees north latitude and has no subspeciation, while the latter occurs south of 58 degrees latitude and consists of 35 subspecies isolated on various mountain ranges (Hall and Kelson 1959). In Utah there are nine subspecies, which are mostly distributed in the Wasatch range that runs northeast …

A Study Of Aquatic Fungi In Powell's Slough, Chao-Chih Hsiao

Theses and Dissertations

Aquatic fungi in-Powell's Slough were.studied in 1967 & 1968. Collections were made and water temperature, oxygen content & pH values were measured at weekly intervals. For collections, wire baskets containing substrata were submerged in water for one month. After collecting, substrata were brought to the laboratory. Identification was based on the keys of Sparrow, 1960. Aquatic fungi identified included seven orders, nine families, fifteen genera, and thirty species, from thirty-three collections of fifteen types of substrata. The substrata used in this study were: (i) fruits: apples, rose hips, plums, pears, haws; (ii) twigs: poplar, weeping willow, river birch, weeping white …

Bees Of The Nevada Test Site, Donald M. Allred

Great Basin Naturalist

No abstract provided.

Index [And Table Of Contents] To Volume 28

Great Basin Naturalist

No abstract provided.

Faunistic Inventory—Byu Ecological Studies At The Nevada Test Site, D Elden Beck, Dorald M. Allred

Great Basin Naturalist

No abstract provided.