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Articles 49231 - 49260 of 52442
Full-Text Articles in Physical Sciences and Mathematics
Design And Evaluation Of A Fisheries Information Storage And Retrieval System (Fisars) For The State Of South Dakota, Richard P. Kramer
Design And Evaluation Of A Fisheries Information Storage And Retrieval System (Fisars) For The State Of South Dakota, Richard P. Kramer
Electronic Theses and Dissertations
Extensive data collected each year from the streams and lakes of South Dakota necessitates a computerized system with which to efficiently utilize the large amount of material. A fisheries related data storage and retrieval system (FISARS) was developed sufficiently to provide cost estimates in creating and maintaining such a system. Detailed descriptions were made to provide information in implementing and utilizing the retrieval system. A survey was made of state fish and game agencies currently operating storage and retrieval systems. This information along with comments provided by the fisheries personnel in the state of South Dakota was used as a …
The Taxonomic Status Of Coyotes From Western South Dakota, Susan E. Lauzon
The Taxonomic Status Of Coyotes From Western South Dakota, Susan E. Lauzon
Electronic Theses and Dissertations
Expansion of the range of the coyote (Canis latrans) has been accompanied by numerous instances of hybridization with domestic dogs (C. familiaris). Recent studies have found a hybrid element in some wild coyote populations. The objectives of this study were to identify the taxonomic status of coyotes in western South Dakota, and to determine the degree of hybridization, if any, that is occurring between coyotes and domestic dogs in the state. Animals were collected from three areas in western South Dakota from September 1976 through January 1978. Skulls of 289 wild canids were cleaned; of these, 167 skulls from adults …
Inbreeding In Rainbow Trout (Salmo Gairdneri): Analysis Of Lethal Temperature Tolerence, Jospeh L. Mangiardi
Inbreeding In Rainbow Trout (Salmo Gairdneri): Analysis Of Lethal Temperature Tolerence, Jospeh L. Mangiardi
Electronic Theses and Dissertations
Inbreeding in rainbow trout (Salmo gairdneri) was evaluated in relation to an altered environment (upper lethal temperature 29 C), at four levels of inbreeding. At each level of inbreeding mean time to death for inbred, female-outbred half-sib, male-outbred half-sib and outbred families were evaluated. In all cases inbreds were less resistant to lethal temperature than were respective outbred families. Analysis of variance 9Snedecor’s F) and multiple range analysis (Tukey’s “w” procedure) provided inference limitations. Inbred fish were 82% less resistant to lethal temperature as comared to the respective outbred family at 50% inbreeding and 19% less resistant at 25% inbreeding. …
Gas Exchange, Carbon Balance And Productivity Of Great Basin Shrub-Dominated Communities, M. M. Caldwell, L. B. Camp, R. S. Holthausen, H. Neuber
Gas Exchange, Carbon Balance And Productivity Of Great Basin Shrub-Dominated Communities, M. M. Caldwell, L. B. Camp, R. S. Holthausen, H. Neuber
Memorandum
No abstract provided.
Pine Valley Validation Site Report, C. D. Jorgensen
Blm Utah Final Initial Wilderness Inventory, United States Bureau Of Land Management
Blm Utah Final Initial Wilderness Inventory, United States Bureau Of Land Management
All U.S. Government Documents (Utah Regional Depository)
In the BLM Wilderness Program, only inventory is completed without consideration of other uses of the land. The wilderness inventory is only for the purpose of determining the presence of wilderness characteristics. It is on that basis that wilderness study areas will be identified. The comparison of wilderness values with other resource values is not part of the wilderness inventory process. It is a valid and necessary part of phase two study. When we enter phase two, the latter part of 1980, it will be imperative for us to consider and resolve whether the orderly development or wise preservation within …
Sand Dune Project Stabilises Erosion, Department Of Agriculture, Western Australia
Sand Dune Project Stabilises Erosion, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Read how the Department of Agriculture's Soil Conservation Service and the Department of Conservation and Environment worked with the Rockingham Shire to upgrade the road and protect the sand dunes.
Middle Atlantic Outer Continental Shelf Environmental Studies Volume Ii-C: Chemical And Biological Benchmark Studies, E. M. Burreson, D. F. Boesch, B. L. Laird
Middle Atlantic Outer Continental Shelf Environmental Studies Volume Ii-C: Chemical And Biological Benchmark Studies, E. M. Burreson, D. F. Boesch, B. L. Laird
Reports
The Middle Atlantic Outer Continental Shelf Environmental Studies is comprised of three volumes.
- Volume I. Executive Summary.
- Volume IIA, IIB, IIC and IID. Chemical and Biological Benchmark Studies.
- Volume III. Geologic Studies.
This is the third of four sections of the Chemical and Biological Benchmark Studies
- CHAPTER 9. COMMUNITY STRUCTURE ANALYSIS AND FOOD HABITS OF FISHES by George R. Sedberry, Eric J. Foell and John A. Musick
- CHAPTER 10. HISTORICAL COMMUNITY STRUCTURE ANALYSIS OF FINFISHES by John A. Musick, James A. Colvocoresses and Eric J. Foell
- CHAPTER 11. BACTERIOLOGY by Howard J. Kator
Chapters of …
Differentiation Of White-Tailed And Mule Deer Blood And Tissue By Isoelectric Focusing, David Oates, Ken Pearson, Nancy Dent
Differentiation Of White-Tailed And Mule Deer Blood And Tissue By Isoelectric Focusing, David Oates, Ken Pearson, Nancy Dent
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
Blood and tissue samples from 66 white-tailed deer (Odocoileus virginanus) and 69 mule deer (Odocoileus hemionus) were examined by isoelectric focusing on polyacrylamide gel slabs in the pH range 6-9. Blood was differentiated via a general protein stain. Tissue differentiation required use of esterase patterns rather than general protein patterns. Esterase patterns of white-tailed and mule deer tissue differed considerably from each other in both number and location of esterase bands. Protein patterns for blood were not as distinctive as the esterase patterns were for tissue, but white-tailed and mule deer could still be differentiated from …
Production Of Synthetic Ampholytes For Isoelectric Focusing, Kenneth A. Pearson, David W. Oates
Production Of Synthetic Ampholytes For Isoelectric Focusing, Kenneth A. Pearson, David W. Oates
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
Synthetic ampholytes can be prepared inexpensively in a small laboratory 0 With approximately $200.00 of glassware (less if some components available), vacuum source, heat source and $5.00 worth of chemicals, one can prepare liters of ampholytes (ph range 3-10). Commercial prices now range from $75.00 to $100.00 for 25 ml, so a substantial savings can be realized.
Erosion Risks With High Stocking Rates At Kojonup Trial, Department Of Agriculture, Western Australia
Erosion Risks With High Stocking Rates At Kojonup Trial, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
A pasture grazing trial at Kojonup dramatically illustrated the effects of Cyclone Alby. Severe erosion was evident on the heavily stocked plots while the more lightly stocked plots showed little damage.
Contour Cultivation : Cheap Erosion Control, T R. Negus, B. Barrett
Contour Cultivation : Cheap Erosion Control, T R. Negus, B. Barrett
Journal of the Department of Agriculture, Western Australia, Series 4
Although the benefits of contour cultivation are well recognised, it makes cultivation more difficult, particularly if the paddock is split by contour banks and grassed waterways. However, a comparison east of Pingelly indicates that contour cultivation is little more expensive or time-consuming than ordinary cultivation.
How Saltland Can Be Reclaimed, A J. Peck
How Saltland Can Be Reclaimed, A J. Peck
Journal of the Department of Agriculture, Western Australia, Series 4
Some possibilities for reclamation of saltland.
The Causes Of Saltland : A Case Study At Esperance, P R. George, S. C. Bull
The Causes Of Saltland : A Case Study At Esperance, P R. George, S. C. Bull
Journal of the Department of Agriculture, Western Australia, Series 4
A series of bores on the Esperance Downs Research Station has demonstrated that the groundwater levels change after clearing, and the relatiojnnship between groundwater levels and soil salinity has been emphasised. This pattern of hydrological change leading to soil salinity problems applies widely in the wheatbelt.
Managing Water-Repellent Soils, D A. Mcghie
Managing Water-Repellent Soils, D A. Mcghie
Journal of the Department of Agriculture, Western Australia, Series 4
A study of water-repellent soils has led to some management recommendations.
Effects Of Chlorinated Seawater On Decapod Crustaceans And Mulinia Larvae, Morris H. Roberts, Chae E. Laird, Jerome E. Illowsky
Effects Of Chlorinated Seawater On Decapod Crustaceans And Mulinia Larvae, Morris H. Roberts, Chae E. Laird, Jerome E. Illowsky
Reports
Eggs and larvae of decapod crustaceans and embryos of Mulinia laterulis were exposed to chlorinated seawater for varying periods in continuous flow systems. Mortality, developmental rate, and general behavior were recorded.
Middle Atlantic Outer Continental Shelf Environmental Studies Volume Ii-B: Chemical And Biological Benchmark Studies, E. M. Burreson, D. F. Boesch, B. L. Laird
Middle Atlantic Outer Continental Shelf Environmental Studies Volume Ii-B: Chemical And Biological Benchmark Studies, E. M. Burreson, D. F. Boesch, B. L. Laird
Reports
The Middle Atlantic Outer Continental Shelf Environmental Studies is comprised of three volumes.
- Volume I. Executive Summary.
- Volume IIA, IIB, IIC and IID. Chemical and Biological Benchmark Studies.
- Volume III. Geologic Studies.
This is the second of four sections of the Chemical and Biological Benchmark Studies
- CHAPTER 5. BOTTOM SEDIMENTS AND SEDIMENTARY FRAMEWORK by Donald .F. Boesch
- CHAPTER 6. BENTHIC ECOLOGICAL STUDIES: MACROBENTHOS by Donald F. Boesch
- CHAPTER 7. BENTHIC ECOLOGICAL STUDIES: MEIOBENTHOS by D.J. Hartzband and Donald F. Boesch
- CHAPTER 8. BENTHIC ECOLOGICAL STUDIES: FORAMINIFERA by Robert L. Ellison
Chapters of this report contain …
Estimation Of Water Surface Elevation Probabilities And Associated Damages For The Great Salt Lake, L. Douglas James, David S. Bowles, W. Robert James, Ronald V. Canfield
Estimation Of Water Surface Elevation Probabilities And Associated Damages For The Great Salt Lake, L. Douglas James, David S. Bowles, W. Robert James, Ronald V. Canfield
Reports
Rising water surface elevations in perennial terminal lakes threaten major damages to shoreline industrial plants, transportation routs, and wetlands. Falling elevations increase pumping costs for industries extracting minerals from the lake water and reduce the quality of shoreline recreation. The managers of these properties need information on future lake level probabilities for planning, and public agencies need information on both probabilities and damages to determine whether lake level control is justified. Standard methods for estimating flood frequency and damages in riverine areas do not work well for terminal lakes because of the interdependency in annual peaks and the long advanced …
Domestic Water Demand In Utah, Trevor C. Hughes, Robert Gross
Domestic Water Demand In Utah, Trevor C. Hughes, Robert Gross
Reports
Multiple regression and frequency analysis of average month, peak month, peak day, and instantaneous water use by various water supply systems in Utah and Colorado are used to develop water demand functions. The research objective was to predict water demand as a function of a small number of independent variables for which data were easily obtainable and thereby provide an attractive method for use by consulting engineers inf uture planning studies. The independent variables in landscaped area and accounts for use of supplementary ditch or pressure irrigation systems. The demand functions were developed with data from a sample of 14 …
Chitinoclastic Bacteria From The Mid-Atlantic Shelf: Distribution, Taxonomy, And Effect Of Oil On Growth And Chitin Degradation, Darbie Anne Lister
Chitinoclastic Bacteria From The Mid-Atlantic Shelf: Distribution, Taxonomy, And Effect Of Oil On Growth And Chitin Degradation, Darbie Anne Lister
Dissertations, Theses, and Masters Projects
No abstract provided.
Additional Comments On Reproductive Strategies And Population Fluctuations In Microtine Rodents, Michael S. Gaines, William M. Schaffer, Robert K. Rose
Additional Comments On Reproductive Strategies And Population Fluctuations In Microtine Rodents, Michael S. Gaines, William M. Schaffer, Robert K. Rose
Biological Sciences Faculty Publications
Recently, Schaffer and Tamarin (1973) proposed a model relating changes in reproductive effort (RE) to fluctuating densities in microtine rodents (lemmings and voles). They assumed (and presented data supporting this assumption) that the major effect of increased crowding would be a reduction in survival among prereproductives, thereby lowering the effective fecundity (Schaffer and Rosenzweig 1977) of their parents. As a consequence, Schaffer and Tamarin argued that the optimal reproductive expenditure, E(N), should decline with increasing population size, N. They also deduced the shape of the zero-growth isocline, N*(E), for differing levels of RE and plotted both E(N) and N*(E) on …
Oyster Spatfall In Virginia Rivers: 1979 Annual Summary, Dexter S. Haven, Paul C. Kendall
Oyster Spatfall In Virginia Rivers: 1979 Annual Summary, Dexter S. Haven, Paul C. Kendall
Reports
The Virginia Institute of Marine Science (VIMS) conducts weekly surveys from June through·early October to obtain oyster spatfall information. Spat counts are made from oyster shells strung on wire and suspended from stakes on public and private beds. The number of spat on shells are counted each week of the spawning season to determine the potential of a particular area for receiving a strike and to predict the most likely period the strikes will occur. Shells planted just before the period of maximum set have the best chance of getting a good strike.
Shoreline Situation Report Richmond County, Virginia, Dennis W. Owen, Lynne C. Morgan, Nancy M. Sturm, Robert J. Byrne, Carl H. Hobbs Iii
Shoreline Situation Report Richmond County, Virginia, Dennis W. Owen, Lynne C. Morgan, Nancy M. Sturm, Robert J. Byrne, Carl H. Hobbs Iii
Reports
No abstract provided.
Shoreline Situation Report Counties Of Fairfax And Arlington, City Of Alexandria, Dennis W. Owen, Lynne C. Morgan, Nancy M. Sturm, Robert J. Byrne, Carl H. Hobbs Iii
Shoreline Situation Report Counties Of Fairfax And Arlington, City Of Alexandria, Dennis W. Owen, Lynne C. Morgan, Nancy M. Sturm, Robert J. Byrne, Carl H. Hobbs Iii
Reports
No abstract provided.
Middle Atlantic Outer Continental Shelf Environmental Studies Volume Ii-A. Chemical And Biological Benchmark Studies, E. M. Burrreson, D. F. Boesch, B. L. Laird
Middle Atlantic Outer Continental Shelf Environmental Studies Volume Ii-A. Chemical And Biological Benchmark Studies, E. M. Burrreson, D. F. Boesch, B. L. Laird
Reports
The Middle Atlantic Outer Continental Shelf Environmental Studies is comprised of three volumes.
- Volume I. Executive Summary.
- Volume IIA, IIB, IIC and IID. Chemical and Biological Benchmark Studies.
- Volume III. Geologic Studies.
This is the first of four sections of the Chemical and Biological Benchmark Studies
- CHAPTER 1. INTRODUCTION by E. M. Burreson
- CHAPTER 2. BENCHMARK STUDIES by Donald F. Boesch, William D. Athearn, and John G. Brokaw
- CHAPTER 3. PHYSICAL OCEANOGRAPHY AND CLIMATOLOGY by C. S. Welch and E. P. Ruzecki
- CHAPTER 4. MIDDLE ATLANTIC BIGHT ZOOPLANKTON: SECOND YEAR RESULTS AND A DISCUSSION OF …
Middle Atlantic Outer Continental Shelf Environmental Studies Volume Ii-D: Chemical And Biological Benchmark Studies, E. M. Burreson, D. F. Boesch, B. L. Laird
Middle Atlantic Outer Continental Shelf Environmental Studies Volume Ii-D: Chemical And Biological Benchmark Studies, E. M. Burreson, D. F. Boesch, B. L. Laird
Reports
The Middle Atlantic Outer Continental Shelf Environmental Studies is comprised of three volumes.
- Volume I. Executive Summary.
- Volume IIA, IIB, IIC and IID. Chemical and Biological Benchmark Studies.
- Volume III. Geologic Studies.
This is the fourth of four sections of the Chemical and Biological Benchmark Studies
- CHAPTER 12. HISTOPATHOLOGICAL STUDIES by Craig Ruddell
- CHAPTER 13. TRACE METALS by Richard L. Harris, Raj Jolly, George Grant, and Robert Huggett
- CHAPTER 14. HYDROCARBONS by C. L. Smith, C. W. Su, W. G. Macintyre, R. H. Bieri, and M. Kent Cueman
- CHAPTER 15. VIMS-BLM SECOND ORDER WAVE CLIMATE …
An Environmental Assessment Of The Summer Plankton In The Vicinity Of The C.P. Crane Generating Station, George C. Grant, Stephen P. Berkowitz
An Environmental Assessment Of The Summer Plankton In The Vicinity Of The C.P. Crane Generating Station, George C. Grant, Stephen P. Berkowitz
Reports
A preliminary survey of summer plankton in ·waters surrounding the C. P. Crane generating station in Bengies, Maryland, revealed several possible effects of plant operation. These perturbations were separated into apparent small-scale and large-scale effects:
Small-scale effects were limited to the immediate discharge region of Saltpeter Creek and included (1) occasional elevation of temperatures at the surface (in August) to above the lethal limit for most zooplankton and sufficiently high to inhibit photosynthesis, (2) a decrease in chlorophyll-a, seen in July and August, (3) a sharp decrease in productivity, also in July and August, and (4) absence of a common …
The Development Of Blue Crabs, Callinectes Sapidus, From Kepone-Contaminated Eggs, A. Thomas Leggett
The Development Of Blue Crabs, Callinectes Sapidus, From Kepone-Contaminated Eggs, A. Thomas Leggett
Dissertations, Theses, and Masters Projects
No abstract provided.
Angiosperm Growth, Distribution, And Tissue Nitrogen Concentration In A Sewage-Impacted Marsh, Yorktown Creek, Virginia, Mark Steven Kowalski
Angiosperm Growth, Distribution, And Tissue Nitrogen Concentration In A Sewage-Impacted Marsh, Yorktown Creek, Virginia, Mark Steven Kowalski
Dissertations, Theses, and Masters Projects
No abstract provided.
Groundwater Heat Pump: An Efficient Way To Heat And Cool Your Home, Calvin G. Clyde, E. W. Vendell, K. Hagen
Groundwater Heat Pump: An Efficient Way To Heat And Cool Your Home, Calvin G. Clyde, E. W. Vendell, K. Hagen
Reports
Engineers at the Utah Water Research Laboratory and the Mechanical Engineering Department at Utah State University have looked into the evonomic feasibility of groundwater heat pumps for residential heating and cooling in the Utah climate. They have found that this type of system conserves evergy and may cost less than conventional heating systems. By using a heat pump, thermal energy can be taken from goundwater and can be used to heat homes in the winder and cool them in the summer. If you are a Utah homeowner in an area where the goundwater heat pump system is economical, you may …