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Articles 8491 - 8520 of 9404
Full-Text Articles in Entire DC Network
Geology Of The Pre-Dune Strata, James B. Swinehart, Robert F. Diffendal Jr.
Geology Of The Pre-Dune Strata, James B. Swinehart, Robert F. Diffendal Jr.
School of Natural Resources: Faculty Publications
Over the last 98 million years, four general geological processes have acted to shape the ancient landscapes buried beneath the Sand Hills. Three of these affected the area directly, either depositing sediments on the land surface or eroding it, while a fourth took place west of Nebraska, but affected the region nonetheless.
Shells of clams, oysters, and numerous other kinds of creatures similar to forms that live today in the seas are preserved as fossils in the chalks, limestones, and shales that form the oldest rocks beneath the Sand Hills that will be described. These deposits indicate to geologists that …
Ua35/11 Student Honors Research Bulletin, Wku Honors Program
Ua35/11 Student Honors Research Bulletin, Wku Honors Program
WKU Administration Documents
The WKU Student Honors Research Bulletin is dedicated to scholarly involvement and student research. These papers are representative of work done by students from throughout the university.
- Coates, Alan. Management's Attitude Toward Collective Bargaining
- Frew, Becky. The Effects of Personality Type and Social Support on Instances of Job Stress
- Green, Laura. Earth Sheltered Housing
- Gregory, Vicky. Fraud and Abuse by Medical Providers in Medicare and Medicaid
- Hignite, Susan. Japanese Students in Kentucky Classrooms
- Hodum, Martha. The Mathematically Gifted Child
- Jones, Rodney. Superman to Censorship: America's Romance with the Comic Book
- Marrs, Shawn. Romanticism and Unromanticism in Sir Gawain and the …
Cultural Resource Inventory And Testing In The Salt Creek Pocket And Devils Lane Areas, Needles District, Canyonlands National Park, Utah, United States Department Of The Interior National Park Service
Cultural Resource Inventory And Testing In The Salt Creek Pocket And Devils Lane Areas, Needles District, Canyonlands National Park, Utah, United States Department Of The Interior National Park Service
All U.S. Government Documents (Utah Regional Depository)
This document is the final technical report on the first phase of a multiyear archeological program conducted in Canyonlands National Park. Some of the purposes of this project are to gather information for upgrading the park's interpretive program, increase the scientific understanding of Canyonlands' prehistory, and prepare a research design to guide future investigations. Archeological inventory of 4500 acres in the Needles District revealed a previously undocumented Archaic occupation and showed that Formative peoples using the area were primarily the Mesa Verde Anasazi, not the Fremont and Anasazi as previously thought. The data also indicate that prehistoric peoples used the …
Effects Of Prescribed Fire On Biomass And Plant Succession In Western Aspen, United States Department Of Agriculture, Forest Service
Effects Of Prescribed Fire On Biomass And Plant Succession In Western Aspen, United States Department Of Agriculture, Forest Service
Forestry
Biomass of grasses, forbs, shrubs, and aspen suckers was determined annually for three prescribed fires in aspen and aspen-conifer forests in southeastern Idaho and western Wyoming. Fires ranged from low to high severity and overstory mortality from 20 to 100 percent. Over 4 postburn years, production of grasses and forbs averaged 1.5 to 3.3 times that of controls. After 5 years, shrub biomass was 21 to 100 percent of preburn biomass. The varied patterns of seral vegetation and their management implications are discussed.
The Prey Of Common Barn Owls (Tyto Alba) In Dry Limestone Scrub Forest Of Southern Jamaica, Donald A. Mcfarlane, Kimball L. Garrett
The Prey Of Common Barn Owls (Tyto Alba) In Dry Limestone Scrub Forest Of Southern Jamaica, Donald A. Mcfarlane, Kimball L. Garrett
WM Keck Science Faculty Papers
A collection of common barn-owl (Tyto alba Scopoli) pellets from caves on the Portland Ridge of Jamaica reveals that whereas introduced rodents constitute approximately 90% of the total prey, bats and birds are also frequent prey items. Of the bats, frugivorous species predominate with Ariteus flavescens Gray and Artibeus jamaicensis Leach accounting for the largest portion of the bat prey. Insectivorous bats are markedly under-represented with respect to the known diversity of insectivorous species in the habitat.
Soil Management For Sustainable Agriculture : Background Papers From A Workshop Organized By The Research Review Committee Of The Grains Section Of The Western Australian Farmers Federation Held At Perth Civic Centre, September 29-30, 1987, Western Australian Farmers' Federation, G A. Robertson
Soil Management For Sustainable Agriculture : Background Papers From A Workshop Organized By The Research Review Committee Of The Grains Section Of The Western Australian Farmers Federation Held At Perth Civic Centre, September 29-30, 1987, Western Australian Farmers' Federation, G A. Robertson
Resource management technical reports
No abstract provided.
Pleistocene And Holocene Carbonate Environments On San Salvador Island, Bahamas: A Field Trip Guide, H. Allen Curran, Roger J. Bain, James L. Carew, John E. Mylroie, James W. Teeter, Brian White
Pleistocene And Holocene Carbonate Environments On San Salvador Island, Bahamas: A Field Trip Guide, H. Allen Curran, Roger J. Bain, James L. Carew, John E. Mylroie, James W. Teeter, Brian White
Geosciences: Faculty Publications
Although isolated and small in size, San Salvador Island is in many ways a unique place - an all carbonates setting on a small, tectonically stable platform, surrounded by deep oceanic waters, and an historical footnote as the widely accepted first landing site of Christopher Columbus in the New World in 1492. Columbus' stay here was brief, and the major events of subsequent history largely have passed San Salvador by. This is not a tourist island; the natural beauty, floras, and faunas of the Bahamas are well preserved here.
The overview theme of this series of field excursions on San …
Demographic Responses To The Chemical Control Of Doublegee, F D. Panetta, R P. Randall
Demographic Responses To The Chemical Control Of Doublegee, F D. Panetta, R P. Randall
Experimental Summaries - Plant Research
Control of Doublegee in medic pasture, 88WH47. Competitive effect and response of Emex australis in a grazed animal pasture.
Lake Mixing Dynamics And Water Quality Models, Heinz G. Stefan
Lake Mixing Dynamics And Water Quality Models, Heinz G. Stefan
Journal of the Minnesota Academy of Science
ABSTRACT-To forecast water quality changes or to evaluate the potential success of restoration measures in lakes, it is necessary to formulate "models" which relate lake water quality to the inflows and outflows of materials and energy. Concepts of dynamic deterministic (cause-effect) models and examples are presented. The relationship between internal thermo-hydraulic processes and water quality is stressed. Stratification mixing, and nutrient kinetics are included in these models.
Human Impacts To Minnesota Wetlands, Carol A. Johnston
Human Impacts To Minnesota Wetlands, Carol A. Johnston
Journal of the Minnesota Academy of Science
ABSTRACT-Minnesota's 3.6 million ha of wetlands have been impacted by a variety of human activities, including agricultural drainage, urbanization, water control, and nonpoint source pollution. More than half of Minnesota's wetlands have been destroyed since the first European settlers arrived, an average loss of about 35,600 ha/yr. Drainage for agriculture is the major cause of wetland loss in Minnesota, particularly in southern Minnesota and the Red River Valley. In addition to impacting wetlands directly, wetland drainage affects downstream areas by increasing flood flows, and releasing sediment and nutrients. Urban development and highway construction affect a smaller proportion of Minnesota's wetlands, …
Glacial Deposits, Vol. 17, 1988-1989, Department Of Geography-Geology
Glacial Deposits, Vol. 17, 1988-1989, Department Of Geography-Geology
Glacial Deposits
Newsletter of the Department of Geography-Geology
Evolution Of The Aeluroid Carnivora: Significance Of The Ventral Promontorial Process Of The Petrosal, And The Origin Of Basicranial Patterns In The Living Families, Robert M. Hunt Jr.
Evolution Of The Aeluroid Carnivora: Significance Of The Ventral Promontorial Process Of The Petrosal, And The Origin Of Basicranial Patterns In The Living Families, Robert M. Hunt Jr.
Department of Earth and Atmospheric Sciences: Faculty Publications
In studies of carnivoran phylogeny, the configuration and ontogenetic development of the auditory bulla enclosing the middle ear have been useful in tracing modern lineages to their first appearances in the mid-Cenozoic. Pre-Oligocene carnivorans, however, lack preserved bullae and have been difficult to relate to later Cenozoic groups. The carnivoran petrosal bone, because of its durability both in intact skulls and as an isolated element, can be tracked through Cenozoic time, and can supply new information on lineage continuity through its geometry and spatial relationships. Aeluroid carnivorans are united by a petrosal of characteristic shape, distinguished by a ventral promontorial …
The Grazing Value Of Medicago Murex., C. M. Saunders
The Grazing Value Of Medicago Murex., C. M. Saunders
Experimental Summaries - Plant Research
Trial 88KA92
Location: Potts Road, East Kojonup.
At present, limited information is available on the grazing value of Medicago murex cv. Zodiac on sheep live weights and wool growth. This trial was designed to provide data on the relative performance of sheep grazing Zodiac compared with the recommended subterranean clovers (Junee/Seaton Park) in the > 450mm rainfall zone in WA.
The Cultural Eutrophication Of Koontz Lake, Indiana: Causes, Consequences, Correction, Willaim B. Eviston, Thomas Crisman
The Cultural Eutrophication Of Koontz Lake, Indiana: Causes, Consequences, Correction, Willaim B. Eviston, Thomas Crisman
School of Geosciences Faculty and Staff Publications
No abstract provided.
Early Lake Ontogeny Following Neoglacial Ice Recession At Glacier Bay, Alaska, Daniel R. Engstrom, Sherilyn C. Fritz
Early Lake Ontogeny Following Neoglacial Ice Recession At Glacier Bay, Alaska, Daniel R. Engstrom, Sherilyn C. Fritz
Department of Earth and Atmospheric Sciences: Faculty Publications
This study explores the environmental forces controlling lake ontogeny at Glacier Bay as a model for early Holocene lake evolution in north temperate lakes worldwide. Long-term chemical and biological changes in lakes are investigated with two complementary research strategies: (1) limnological conditions are compared among 32 lakes of known age and in different stages of primary catchment succession and (2) sediment cores from these same lakes are analyzed stratigraphically for fossil diatoms to ascertain developmental trends in pH, alkalinity, algal composition, and trophic status at individual sites.
Trends in water chemistry inferred from the chronosequence approach include a progressive loss …
Canola: A New Cash Crop For Kentucky, James H. Herbek, Lloyd W. Murdock, Dan Kirkland, T. Gray
Canola: A New Cash Crop For Kentucky, James H. Herbek, Lloyd W. Murdock, Dan Kirkland, T. Gray
Soil Science News and Views
For the past few years, Kentucky farmers have become more interested in "alternative" cash crops for their farming operations. One such crop that is starting to receive attention is Canola. Classified as an oil crop, Canola is a type of oilseed rape. Rape is a member of the mustard family and is closely related to turnip. cabbage, cauliflower, broccoli and mustards. It is a cool-season annual and an important oilseed crop in many parts of the world that is used for both human consumption and industrial purposes. Major rapeseed production areas are in Europe and Canada. The seed contains approximately …
Miscellaneous Production 23/87 - Animal Production In The Spinifex And Shrubland Regions Of Western Australia, D. Burnside
Miscellaneous Production 23/87 - Animal Production In The Spinifex And Shrubland Regions Of Western Australia, D. Burnside
Animal production and livestock published reports
The role of the Rangeland Management Branch is to promote the sustained economic use of the rangeland resource. It provides research and extension services to the pastoral industry, provides advice on the condition of the range resource to Government and provides technical information on rangelands to other rangeland managers. A principal objective to be met in fulfilling that role is the development and promotion of economically efficient place systems that conserve the rangeland resource. At the inaugural Pastoral Soil Conservation Districts Conference in Meekatharra in May 1987, pastoralist delegates emphasized the importance of achieving that objective within the various soil …
Timber Harvesting On Private Lands: The Washington Timber– Fish–Wildlife Agreement, John P. Mcmahon
Timber Harvesting On Private Lands: The Washington Timber– Fish–Wildlife Agreement, John P. Mcmahon
Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)
24 pages.
Contains 3 pages of references.
Bay/Delta Standards Memorandum And Exhibits, Thomas J. Graff
Bay/Delta Standards Memorandum And Exhibits, Thomas J. Graff
Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)
47 pages.
The 1987 Nonpoint Source Pollution Amendments And State Progress Under The New Program, John H. Davidson
The 1987 Nonpoint Source Pollution Amendments And State Progress Under The New Program, John H. Davidson
Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)
143 pages.
Contains 4 pages of references.
Antidegradation And Nonpoint Source Pollution In The West, H. Michael Anderson
Antidegradation And Nonpoint Source Pollution In The West, H. Michael Anderson
Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)
31 pages.
Contains references.
Soil Erosion, Agrichemicals And Water Quality: A Need For A New Conservation Ethic?, Christine Olsenius
Soil Erosion, Agrichemicals And Water Quality: A Need For A New Conservation Ethic?, Christine Olsenius
Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)
24 pages.
Contains references.
The San Joaquin–Sacramento Delta, David R. Beringer
The San Joaquin–Sacramento Delta, David R. Beringer
Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)
20 pages.
Contains 2 pages of references.
Public Land Livestock Grazing, Water Quality And Riparian Ecosystems: The Evolving Legal And Technical Context, Richard H. Braun
Public Land Livestock Grazing, Water Quality And Riparian Ecosystems: The Evolving Legal And Technical Context, Richard H. Braun
Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)
8 pages.
Contains 1 page of references.
Legal Issues: San Francisco Bay, Sacramento-San Joaquin River Delta And Estuary, Stuart L. Somach
Legal Issues: San Francisco Bay, Sacramento-San Joaquin River Delta And Estuary, Stuart L. Somach
Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)
48 pages.
Contains footnotes.
Estimating Potential Ground And Surface Water Pollution From Land Application Of Poultry Litter - Ii, D. C. Wolf, J. T. Gilmour, P. M. Gale
Estimating Potential Ground And Surface Water Pollution From Land Application Of Poultry Litter - Ii, D. C. Wolf, J. T. Gilmour, P. M. Gale
Arkansas Water Resources Center Technical Reports
In Arkansas, approximately 1 Tg of poultry (Gallus gallus domesticus) manure and litter is produced annually. These waste products are commonly applied to pastures as a soil amendment or fertilizer, but excessive application rates and poor management practices could result in nutrient contamination of ground and surface water. The purpose of this study was to: (1) assess the nutrient concentrations in poultry manure and (2) evaluate the nitrogen loss from land-applied poultry litter and manure due to ammonia volatilization and denitrification. Analyses for total Kjeldahl nitrogen (TKN), inorganic nitrogen (Ni), phosphorus (P), and potassium (K) were compared in 12 wet …
Patterns Of Sulfur Deposition In The Wood Of Pinus Echinatia Mill. From The Cumberland Plateau In Kentucky, Darrell Ray
Patterns Of Sulfur Deposition In The Wood Of Pinus Echinatia Mill. From The Cumberland Plateau In Kentucky, Darrell Ray
Masters Theses & Specialist Projects
Air pollution and acid precipitation have long had an influence on plant and animal life. In this study, the level of sulfur in the stem tissue of Pinus echinata Mill. was measured in trees from various sites along the western edge of the Cumberland Plateau to determine the presence and pattern of sulfur deposition in this species. Overall, a 40.28% increase in sulfur levels was observed from four sites along the plateau with levels increasing from 0.072 mgS/gdwt in the 1962-66 growth increment to 0.101 mg in the 1982-86 increment. According to a computer generated analysis of variance, the differences …
The Occurrence Of Fish Remains In Modern Lake Systems : A Test Of The Stratified-Lake Mode, Douglas R. Britton
The Occurrence Of Fish Remains In Modern Lake Systems : A Test Of The Stratified-Lake Mode, Douglas R. Britton
Loma Linda University Electronic Theses, Dissertations & Projects
Theories regarding the taphonomy of fishes in lacustrine environments have traditionally relied on an anoxic water column to explain the excellent preservation. This concept has never been directly tested in modern lacustrine environments that are thought to be analogous to the lacustrine environments predicted by the Stratified-lake Model. This research tested that model by searching for fish remains in 38 collected bottom samples of six modern lacustrine analogues, including Fayetteville Green Lake, New York. The bottom sediments of a warm, holomictic, shallow, and saline lake (Salton Sea, California) were also examined. Although laminated sediments were found in all of the …
Evaluating Hay Quality, William C. Templeton Jr.
Evaluating Hay Quality, William C. Templeton Jr.
Kentucky Alfalfa and Stored Forage Conference
One of the frustrations to nutritionists interested in the feeding value of roughage has been that with all their book knowledge and technical aids no dependable scheme they could devise would consistently rank forages in feeding value, while the dumb ruminant animal could unerringly detect differences in their nutritive values.
-E. W. Crampton, 1965
Blister Beetles In Alfalfa, C. M. Christensen, Lee H. Townsend
Blister Beetles In Alfalfa, C. M. Christensen, Lee H. Townsend
Kentucky Alfalfa and Stored Forage Conference
Blister beetles are Iong cylindrical beetles that may be black, gray, yellow and brown striped, black with gray margins on the wing covers or black with a red head. These insects are usually found feeding in clusters on alfalfa. They can cause severe sickness and sometimes death when livestock especially horses eat the live or dead beetles. They are usually not found in alfalfa in mid-July and early August which translates to the third or fourth cutting. Blister beetles (black ones, gray margined ones, and yellow striped ones) were collected in very noticeable numbers in several central Kentucky alfalfa fields …