Open Access. Powered by Scholars. Published by Universities.®
![Digital Commons Network](http://assets.bepress.com/20200205/img/dcn/DCsunburst.png)
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (11731)
- Utah State University (2088)
- University of Colorado Law School (1474)
- William & Mary (1446)
- University of Nevada, Las Vegas (1214)
-
- Portland State University (824)
- Montana Tech Library (754)
- City University of New York (CUNY) (719)
- Department of Primary Industries and Regional Development, Western Australia (634)
- SIT Graduate Institute/SIT Study Abroad (586)
- University of Kentucky (505)
- Loyola Marymount University and Loyola Law School (455)
- University of Arkansas, Fayetteville (401)
- Western Washington University (355)
- University of Texas Rio Grande Valley (315)
- Old Dominion University (302)
- University of Vermont (288)
- University of Massachusetts Amherst (283)
- Wofford College (283)
- Edith Cowan University (269)
- Florida International University (257)
- Western Kentucky University (256)
- The University of Maine (232)
- University of South Florida (215)
- Chapman University (213)
- Bridgewater State University (211)
- Bates College (157)
- Singapore Management University (157)
- California Polytechnic State University, San Luis Obispo (134)
- Technological University Dublin (133)
- Keyword
-
- Research and Technical Reports (656)
- Climate change (631)
- Water quality (535)
- Sustainability (500)
- United States (492)
-
- 2014 International Conference on Hydroinformatics HIC (464)
- Western Australia (451)
- Virginia (387)
- Management (385)
- Groundwater (345)
- Colorado (322)
- GIS (306)
- Conservation (300)
- Utah (260)
- Agriculture (259)
- California (248)
- Water (245)
- Nebraska (232)
- Data (231)
- Natural resources (230)
- Environment (229)
- Drought (215)
- Climate (214)
- Invasive species (205)
- Salinity (205)
- Priority Soils (198)
- Resilient Communities (190)
- Environmental (180)
- Wyoming (180)
- Energy (179)
- Publication Year
- Publication
-
- Reports (1626)
- School of Natural Resources: Faculty Publications (1576)
- USDA Wildlife Services: Staff Publications (1528)
- Silver Bow Creek/Butte Area Superfund Site (753)
- Independent Study Project (ISP) Collection (585)
-
- United States Geological Survey: Staff Publications (512)
- The Prairie Naturalist (483)
- Great Plains Wildlife Damage Control Workshop Proceedings (478)
- International Conference on Hydroinformatics (464)
- United States Department of Commerce: Staff Publications (424)
- Technical Reports (375)
- School of Natural Resources: Dissertations, Theses, and Student Research (330)
- Memorandum (316)
- Water Current Newsletter (290)
- Resource management technical reports (287)
- School of Earth, Environmental, and Marine Sciences Faculty Publications and Presentations (283)
- All U.S. Government Documents (Utah Regional Depository) (281)
- The Fierce Green Fire (281)
- Environmental Science and Management Faculty Publications and Presentations (270)
- Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298 (266)
- Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications (265)
- Department of Environmental Studies: Undergraduate Student Theses (255)
- The Probe: Newsletter of the National Animal Damage Control Association (243)
- Bird Control Seminars Proceedings (242)
- Publications and Research (240)
- Data (227)
- KWRRI Research Reports (225)
- United States Agricultural Commodities in Drought Archive (219)
- Presentations (194)
- Eastern Pine and Meadow Vole Symposia (185)
Articles 30691 - 30720 of 30979
Full-Text Articles in Physical Sciences and Mathematics
Starlings In The Pacific Northwest, H. Nelson Elliott
Starlings In The Pacific Northwest, H. Nelson Elliott
Proceedings of the 2nd Vertebrate Pest Control Conference (1964)
As is the case in many sections of the country today, starlings are causing increasing concern in the Pacific Northwest. When these birds were first recognized in Washington, Oregon and Idaho in the early 1940's only small numbers were seen, usually with blackbirds. During the 50's, however, the number of wintering starlings increased from a few birds, to thousands, with estimated flocks of 25,000 to 50,000 in western Oregon and along the Snake River Valley in Idaho and eastern Oregon. During the past five years winter resident populations in these areas have been estimated by the 100,000's, with some observers …
Irrigation: Soil-Plant-Water Relationships, Soil Conservation Service, Engineering Division
Irrigation: Soil-Plant-Water Relationships, Soil Conservation Service, Engineering Division
All U.S. Government Documents (Utah Regional Depository)
Soil-Plant-Water relationships describes those properties of soils and plants that affect the movement, retention, and use of water essential to plant growth. This publication attempts to provide engineers the basic data necessary to plan and maintain efficient conservation irrigation practices to provide a permanent irrigated agriculture engineering principles and research findings have been screened to give emphasis to the information needed to design, install, and operate irrigation systems on farms or groups of farms.
The Natural Propagation Of Northern Pike In Small Drainable Ponds, D. B. Mccarraher
The Natural Propagation Of Northern Pike In Small Drainable Ponds, D. B. Mccarraher
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
To obtain information on the hatching success and fingerling survival of the northern pike (Esox lucius) in small drainable ponds, experiments were initiated at the State Fish Hatchery, Valentine, Nebraska, during the spring seasons of 1955 and 1956.
All the ponds used in this work were winter-fallowed, providing areas without fish populations. At no time in 1955 or 1956 were forage fish added to the ponds.
Adult spawner pike for the ponds were obtained from Mothers Lake (in Cherry County, Nebraska) in 1955 and from Big Alkali Lake (also in Cherry County) during 1956. All breeder pike were …
Recent Limnological Studies Of The Alkaline Lakes In Nebraska And North Dakota, D. B. Mccarraher
Recent Limnological Studies Of The Alkaline Lakes In Nebraska And North Dakota, D. B. Mccarraher
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
Environmental relationships and biological indices have been recorded for 1,200 sandhills lakes in Nebraska since 1954. Three lakes in central and southern North Dakota were investigated during the years 1963 to 1964. Most of the Nebraska lakes were alkaline eutrophic of the sodium bicarbonate and sodium + potassium carbonate types. The North Dakota lakes range from sodium bicarbonate to sodium sulfate types. These lakes may be classified as saline eutrohpic. The ionic composition differs from that of the marine and inland sodium chloride type of water. The invertebrate fauna of permanently alkaline environments are discussed from the point of view …
Private Nonindustrial Ownership Of Forest Land: An Economic Theory Of Owner Motivation And Management Intensity, Robert O. Mcmahon
Private Nonindustrial Ownership Of Forest Land: An Economic Theory Of Owner Motivation And Management Intensity, Robert O. Mcmahon
Yale School of the Environment Bulletin Series
No abstract provided.
Dissolved-Mineral Inflow To Great Salt Lake And Chemical Characteristics Of The Salt Lake Brine: Part Ii- Technical Report, D. C. Hahl, R. H. Langford
Dissolved-Mineral Inflow To Great Salt Lake And Chemical Characteristics Of The Salt Lake Brine: Part Ii- Technical Report, D. C. Hahl, R. H. Langford
Elusive Documents
No abstract provided.
Erratum: Autoradiographic Distribution Of Radioactive Sodium In Rat Kidney
Erratum: Autoradiographic Distribution Of Radioactive Sodium In Rat Kidney
Canyonlands Research Bibliography
No abstract provided.
Waterfowl Drive-Trap Banding, Gene Goecke
Waterfowl Drive-Trap Banding, Gene Goecke
Other Publications in Wildlife Management
During a 3-week period in July of 1964, Game Section personnel with assistance from Biology Section and Conservation Officer personnel carried out drive-trap waterfowl banding operations on marsh areas in the northern part of Iowa. This was the fourth year that drive-trap banding operations have been carried out in the state. Several days prior to the actual banding operations were spent selecting areas to band. Areas were selected that had a good population of local birds and vegetative cover suitable for banding. Young birds can be extremely difficult to drive on heavily vegetated marshes of emergent vegetation, and marshes lacking …
Calibration Of Irrigation Headgates By Model Analysis, Gaylord V. Skogerboe, Vaughn E. Hansen
Calibration Of Irrigation Headgates By Model Analysis, Gaylord V. Skogerboe, Vaughn E. Hansen
Reports
Introduction
The purpose of this research project was to calibrate the slide gates used by the D.M.A.D. Company (Delta, Melville, Abraham and Deseret Irrigation Companies). These gates, which number more than 600, are located throughout the distribution system. Each gate is placed in a concrete box 4 feet wide, 3-1/2 feet deep and 4 feet long. The structure is used as a means of diverting the water and is also used as a measuring device.
A similar structure, but with a different type of slide gate, was calibrated in 1914. At the time rating tables were prepared which listed the …
Preliminary Studies In The Development Of A Gastric Battery For Fish, Earl R. Kendle, Larry A. Morris
Preliminary Studies In The Development Of A Gastric Battery For Fish, Earl R. Kendle, Larry A. Morris
Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts
In 1956 Parker S. Trefethen described an external ultrasonic tag for tracking fish. This tag was designed for use on adult king salmon, Oncorhynchus tshawytsca, and was subsequently used to track these fish above Bonneville Dam (Johnson, 1957). Although this tracking system was the best available at that time several limitations to its use were evident: the transmitter and power supply were large and thus impractical for use on small fish, and the unit was attached externally and was likely to influence movement, and the life of the battery was very short (17 hours). Succeeding transmitters were somewhat longer-lived …
Solar Radiation, Gloucester Point, Virginia : [1960-1963], Bernard C. Patten, J. Ernest Warriner, Weston Eayrs, Charles L. Rutherford, D. K. Young, Richard B. Stone, Virginia Fisheries Laboratory
Solar Radiation, Gloucester Point, Virginia : [1960-1963], Bernard C. Patten, J. Ernest Warriner, Weston Eayrs, Charles L. Rutherford, D. K. Young, Richard B. Stone, Virginia Fisheries Laboratory
Reports
No abstract provided.
Benthal Activity, Walter Lawrance
Analytical Data, Walter A. Lawrance
Odor Report, Walter A. Lawrance
Pool Studies, Walter A. Lawrance
Benthal Activity, Walter A. Lawrance
Mill Pollution, Walter A. Lawrance
Analytical Data, Walter A. Lawrance
Press Reports, Walter A. Lawrance
Aerial Application Of Evaporation-Reducing Chemicals, Development And Evaluation Of Equipment And Techniques, C. Earl Israelsen, Vaughn E. Hansen
Aerial Application Of Evaporation-Reducing Chemicals, Development And Evaluation Of Equipment And Techniques, C. Earl Israelsen, Vaughn E. Hansen
Reports
Aerial applications of both liquid and powder evaporation retardants have been made in parallel strips on large lakes for purposes of comparison. Films formed from powder spread more rapidly than did those from liquid, but usually both films ultimately spread to approximately equal widths and had the same degree of compression as determined with indicator oils. Evaporation retarding materials with large numbers of particles having diameters smaller than 75 microns are greatly affected by the wind. As the chemical is dispensed from the airplane. the fine particles drift with the wind and in some instances are carried onto the land …
Colorado River Storage Project, Glen Canyon Unit, Lake Powell, Area And Capacity Tables, Bureau Of Reclamation; United States
Colorado River Storage Project, Glen Canyon Unit, Lake Powell, Area And Capacity Tables, Bureau Of Reclamation; United States
Elusive Documents
No abstract provided.
A History Of Nebraska's Fishery Resources, David J. Jones
A History Of Nebraska's Fishery Resources, David J. Jones
Nebraska Game and Parks Commission: Publications
This report is a compilation of records pertaining to the distribution and management of fish in Nebraska. It was prepared to serve as both a technical and nontechnical history of the state's fisheries resource and past fisheries work. It can be used in planning future fisheries administration and management as well as providing interesting reading for many fishermen.
The information was collected by a search of the available literature including records of the Nebraska Game, Forestation and Parks Commission and by interviews with individuals. Included in the report are historical notes of early fish sightings, information on the native and …
Developing A State Water Plan Utah's Water Resources--Problems And Needs--A Challenge, Utah Water Research Laboratory
Developing A State Water Plan Utah's Water Resources--Problems And Needs--A Challenge, Utah Water Research Laboratory
Reports
Of all the natural resources with which Utah has been endowed none is more vital to the social and economic well-being of the people than it water resource. We cannot manufacture water. We have found no acceptable substitute. Not one more drop of water is available for our use today than was available to the pioneers. Yet water uses and water demands have multiplied over the years. Since we can do little to change nature's water allotment to Utah we must learn how to utilize our existing supplies more judiciously. This means devoting increasingly more attention to problems of water …
Dissolved-Mineral Inflow To Great Salt Lake And Chemical Characteristics Of The Salt Lake Brine: Part 1- Selected Hydrologic Data, D. C. Hahl, C. G. Mitchell
Dissolved-Mineral Inflow To Great Salt Lake And Chemical Characteristics Of The Salt Lake Brine: Part 1- Selected Hydrologic Data, D. C. Hahl, C. G. Mitchell
Elusive Documents
No abstract provided.
Pollution-Caused Fish Kills In 1962
Pollution-Caused Fish Kills In 1962
Other Publications in Wildlife Management
This publication is the third annual report of fish kills caused by pollution occurring in the United States. The reporting of pollution-caused fish kills was begun by the Public Health Service in the Spring of 1960 in an effort to secure additional information on the effects of pollution in the Nation's waters, to elicit the cooperation and assistance of conservation groups in the States to help determine causes of fish kills and assist in their abatement, and to place responsibility for fish kills where it belonged.
The Surgeon General asked all State conservation and fish and game agencies to assist …
Pool Studies, Walter A. Lawrance
Odor Report, Walter A. Lawrance
Analytical Data, Walter Lawrance
Benthal Activity, Walter Lawrance
Analytical Data, Walter A. Lawrance