Earth Sciences Commons^™

The Benthic Communities Of The Eastern Rocky Shore Areas Of Goshen Bay, Utah Lake, Thomas Whitney Toole

Theses and Dissertations

Information about the benthic macroinvertebrate populations along the eastern shore of Goshen Bay, Utah Lake, Utah, can be used, in part, to determine future management of the lake. In the project herein reported, cement artificial substrate samplers were used to sample two types of substrate: rubble and compacted calcareous tufa. Monthly samples were obtained from each type of substrate from March 1972 to May 1973. An amphipod, Hyalela azteca and a chironomid, Dicrotendipes fumidus were the dominant organisms in numbers and tiomass. Amphipod numbers were dependent upon the amount of algal standing crop. Elimination of this area could affect the …

Coastal Vegetational Communities Of The Two Texas Barrier Islands, Boca Chica And Brazos, Baltazar Cisneros

Theses and Dissertations - UTB/UTPA

Two Texas barrier islands, Boca Chica and Brazos, have unique coastal vegetational communities that may be Influenced by several environmental factors. These environmental factors include temperature, precipitation, wind speed, sunshine exposure, day length, and dune height. The purpose of this investigation was to determine the total number of coastal plant species per station, season, and year and to consider environmental factors that may significantly affect the number and pattern of coastal species. Coverage comparison between aerial and land sampling and aerial vegetational zonation was also considered.

Results indicated the presence of 21 angiosperm families and a total of 54 species. …

Nutrient And Energy Composition Of Beef Cattle Feedlot Waste Fractions, C. B. Gilbertson, J. A. Nienaber, J. R. Ellis, T. M. Mccalla, T. J. Klopfenstein, S. D. Farlin

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This bulletin describes nutrient and energy composition of beef cattle waste fractions as a function of the ration roughage level and type of feedlot. Results can be used to plan engineering system approaches and research to develop handling and processing equipment necessary for recovery of the most valuable portion of waste.

The Fresh-Water Mussel Industry Of The Lower Tennessee River: Ecology & Future, Randall Grace

Masters Theses & Specialist Projects

The fresh-water mussel industry of the Tennessee River is nearing an end. Overharvesting, habitat alterations, and pollution are the major contributors to the depletion of the mussel resource, upon which the shell industry is based. A history of unconcern by shell harvesters and weak conservation enforcement by governmental agencies, has left the major waterways of the United States nearly void of commercial clams. The lower Tennessee River presently supplies the mussel industry with nearly all the important species of mollusks. If this industry is to be maintained in the United States, ways to preserve and propagate the mussel population must …

Seed Reserves In Desert Soils, David W. Goodall, Suzanne J. Morgan

Memorandum

Soil and litter samples were collected from the playa, playa fringe and bajada zones of the Jornada Validation Site. These samples were analyzed for their seed content, special attention being paid to spatial distribution. At the time of sampling, there was little litter on the soil surface, and the litter contained only a small proportion of the total seeds present.

A Study Of The Radiation Quality Under Plant Canopies In The Wave Range 0.4 To 2.5 Microns, Nolasco G. Baldazo

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The spectral distribution of the global radiation from 0.4 to 2.5 microns penetrating deciduous and coniferous canopies were measured during clear days between 10 a.m. and 2 p.m. using a double-quartz monochromator.

In the visible region (0.4 to 0.7 micron) the average relative spectral transmissions under both canopies are about one percent beginning at 0.4 micron and decreasing to about half a percent at 0.67 micron. There is only a small peak in the green (0.55 micron) transmission under deciduous stands while there is none under coniferous canopies. The slightly higher transmission in the blue (0.4 micron) is attributed to …

Life: A Computer Program For Stochastic Life Table Analysis, C. Romesburg, K. Marshall

Memorandum

No abstract provided.

Phenology And Function Of Sonoran Desert Annuals In Relation To Environmental Changes, Duncan T. Patten, Edward M. Smith

Memorandum

No abstract provided.

The Consumption, Utilization And Modification Of Nutritional Resources By The Jackrabbit (Lepus Californicus) In The Mohave Desert, V. H. Shoemaker, K. A. Nagy, W. R. Costa

Memorandum

No abstract provided.

Gas Exchange, Translocation, Root Growth, And Soil Respiration Of Great Basin Plants, M. M. Caldwell, E. J. Depuit, O. A. Fernandez, H. H. Wiebe, L. B. Camp

Memorandum

No abstract provided.

Organic Constituents In Soils, R. L. Westerman

Memorandum

No abstract provided.

Reproduction And Survivorship Of The Lizard, Uta Stansburiana, And The Effects Of Winter Rainfall, Density And Predation On These Processes, Frederick B. Turner, Philip A. Medica, Donald D. Smith

Memorandum

No abstract provided.

Phenology, Productivity And Nutrient Dynamics Of Some Cool Desert Desert Shrubs, Neil E. West, Carol Gunn

Memorandum

No abstract provided.

Distribution And Balance Of Biomass And Nutrients In Desert Shrub Ecosystems, James O. Klemmedson

Memorandum

No abstract provided.

A Generalized Phenology Submodel For Desert Plants, J. Reynolds

Memorandum

No abstract provided.

Distribution Of Soil Arthropods In Rock Valley, Nevada, Eric B. Edney, James F. Mcbrayer, Paul J. Franco, Allen W. Phillips

Memorandum

No abstract provided.

An Approach For A Photosynthesis Model Of Desert Plants, E. D. Schultze, O. L. Lange, A. Olsen

Memorandum

No abstract provided.

Meteorological Input To General-Purpose Models: A New Subroutine, David W. Goodall, Janice Robinson

Memorandum

No abstract provided.

Simulations Of Desert Biome Sites Using The General-Purpose Model, C. Gist, David W. Goodall

Memorandum

No abstract provided.

Demographic And Individual Growth Studies For Dipodomys Ordii, Peromyscus Maniculatus And Reithrodnotomys Megalotis, H. Duane Smith, Clive D. Jorgensen, Gary H. Richins, Nils C. Stenseth

Memorandum

No abstract provided.

A Decomposition Submodel, H. Parnas, J. Radford

Memorandum

No abstract provided.

Seasonal Use Of Soil Moisture By Mature Velvet Mesquite (Prosopis Juliflora Var. Velutina), Dwight R. Cable

Memorandum

No abstract provided.

Responses And Interactions In Desert Plants As Influenced By Irrigation And Nitrogen Applications, E. M. Romney, Arthur Wallace, J. D. Childress, J. E. Kinnear, H. Kaaz, P. A.T. Wieland, M. Lee, T. L. Ackerman

Memorandum

No abstract provided.

Physiological Section For The Animal Submodel General-Purpose Model, W. G. Whitford, R. Mishaga, J. Delson, S. Pimm, F. Kay

Memorandum

No abstract provided.

A Nitrogen Submodel, H. Parnas, J. Radford

Memorandum

No abstract provided.

Model For Estimating Water, Salt And Temperature Distribution In The Soil Profile, R. A. Griffin, R. J. Hanks, S. Childs

Memorandum

No abstract provided.

Rock Valley Validation Site, F. B. Turner, J. F. Mcbrayer

Memorandum

No abstract provided.

Population Structure, Foraging Behavior And Daily Movements Of Certain Sonoran Desert Birds, S. M. Russell, P. J. Gould

Memorandum

No abstract provided.

Classification And Quantification Of Invertebrate Activity And The Role Of Invertebrates In Nitrogen Processing In Plants, Litter And Soil In Curlew Valley, P. R. Sferra

Memorandum

No abstract provided.

Effect Of Soil Water Potential On Soil Moisture Absorption, Transpiration Rate, Plant Water Potential, And Growth Of Artemisia Tridentata, Gaylon S. Campbell, Grant A. Harris

Memorandum

No abstract provided.