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Articles 51451 - 51480 of 52770
Full-Text Articles in Entire DC Network
Effects Of Early And Late Irrigation In The Net Productivity Of Oryzopsis Hymenoids In Eastern Idaho, Lorentz C. Pearson
Effects Of Early And Late Irrigation In The Net Productivity Of Oryzopsis Hymenoids In Eastern Idaho, Lorentz C. Pearson
Memorandum
No abstract provided.
Effects Of Environmental Factors On Rates Of Primary Production Of Two Desert Grass Species, Gary L. Cunningham, Fred R. Balding
Effects Of Environmental Factors On Rates Of Primary Production Of Two Desert Grass Species, Gary L. Cunningham, Fred R. Balding
Memorandum
No abstract provided.
Gaseous Exchange In Mohave Desert Shrubs, S. Bamberg, A. Wallace
Gaseous Exchange In Mohave Desert Shrubs, S. Bamberg, A. Wallace
Memorandum
No abstract provided.
Gas Exchange Of Great Basin Shrubs, M. M. Caldwell, R. T. Moore, R. S. White, E. J. Depuit
Gas Exchange Of Great Basin Shrubs, M. M. Caldwell, R. T. Moore, R. S. White, E. J. Depuit
Memorandum
No abstract provided.
Predicting Nitrogen Transformations And Osmotic Potentials In Warm Desert Soils, G. R. Dutt, J. Hanks
Predicting Nitrogen Transformations And Osmotic Potentials In Warm Desert Soils, G. R. Dutt, J. Hanks
Memorandum
No abstract provided.
Factors Affecting The Movement And Distribution Of Anions In Desert Soils, J. J. Jurinak, R. A. Griffin
Factors Affecting The Movement And Distribution Of Anions In Desert Soils, J. J. Jurinak, R. A. Griffin
Memorandum
No abstract provided.
Soil Factors Influencing Water Uptake By Plants Under Desert Conditions, H. K. Qashu, D. D. Evans, R. S. Hanks, M. L. Wheeler
Soil Factors Influencing Water Uptake By Plants Under Desert Conditions, H. K. Qashu, D. D. Evans, R. S. Hanks, M. L. Wheeler
Memorandum
No abstract provided.
Demographic Studies Of Sagebrush Insects As Functions Of Various Environmental Factors, Ting H. Hsiao
Demographic Studies Of Sagebrush Insects As Functions Of Various Environmental Factors, Ting H. Hsiao
Memorandum
No abstract provided.
Colony Characters Of Termites As Related To Population Density And Habitat, W. L. Nutting, M. I. Haverty, J. P. Lafage, R. V. Carr
Colony Characters Of Termites As Related To Population Density And Habitat, W. L. Nutting, M. I. Haverty, J. P. Lafage, R. V. Carr
Memorandum
No abstract provided.
Demography, Foraging Activity Of Leaf-Cutter Ants, Acromyrmex Versicolor, In Relation To Colony Size And Location, Season, Vegetation And Temperature, F. G. Werner, S. L. Murray
Demography, Foraging Activity Of Leaf-Cutter Ants, Acromyrmex Versicolor, In Relation To Colony Size And Location, Season, Vegetation And Temperature, F. G. Werner, S. L. Murray
Memorandum
No abstract provided.
Proteolytic Activity Of Soil Microorganisms, Robert T. O'Brien
Proteolytic Activity Of Soil Microorganisms, Robert T. O'Brien
Memorandum
No abstract provided.
Aquatic Macroinvertebrates Of The Playa, G. Richardson, C. R. Ward, E. W. Huddleston
Aquatic Macroinvertebrates Of The Playa, G. Richardson, C. R. Ward, E. W. Huddleston
Memorandum
No abstract provided.
Statistical Analysis Of Desert Rock Distributions, Eugene Richard Heyman
Statistical Analysis Of Desert Rock Distributions, Eugene Richard Heyman
Memorandum
No abstract provided.
Data Summary For Aquatic Macroinvertebrates, L. G. Richardson, M. D. Merritt, C. R. Ward
Data Summary For Aquatic Macroinvertebrates, L. G. Richardson, M. D. Merritt, C. R. Ward
Memorandum
No abstract provided.
Transfer Of 32p From The Gastrointestinal Tract To Flesh As An Index Of Digestive Rate In The Desert Pupfish (Cyprindon Nevadensis), James Deacon
Memorandum
No abstract provided.
Dynamics And Productivity Of Aquatic Invertebrates In A Desert Environment, A. R. Gaufin, J. Stanford, E. Clubb, E. Nisonger
Dynamics And Productivity Of Aquatic Invertebrates In A Desert Environment, A. R. Gaufin, J. Stanford, E. Clubb, E. Nisonger
Memorandum
No abstract provided.
Reports Of 1971 Progress Volume 1 Central Studies, U.S. International Biological Program
Reports Of 1971 Progress Volume 1 Central Studies, U.S. International Biological Program
Progress reports
No abstract provided.
Reports Of 1971 Progress Volume 5 Aquatic Studies, U.S. International Biological Program
Reports Of 1971 Progress Volume 5 Aquatic Studies, U.S. International Biological Program
Progress reports
No abstract provided.
Assimilation, Metabolism And Growth Of Utah Chub, Gila Atraria, F.C. Cheng, R.L. Wallace, T.C. Bjornn, C. Macphee
Assimilation, Metabolism And Growth Of Utah Chub, Gila Atraria, F.C. Cheng, R.L. Wallace, T.C. Bjornn, C. Macphee
Progress reports
No abstract provided.
Environment And Communiy Organization In Grasslands Of Canyonlands National Park, Edgar F. Kleiner, K. T. Harper
Environment And Communiy Organization In Grasslands Of Canyonlands National Park, Edgar F. Kleiner, K. T. Harper
Canyonlands Research Bibliography
Sixty uniformly distributed stands in adjacent areas, 40 in Virginia Park (virgin) and 20 in Chesler Park (grazed), were analyzed. Cryptogamic and vascular species were recorded; cover was analyzed by the point sampling method, and frequency by means of 25 quadrats (each 0.125 m^2) per stand. The prevalent species (26 in Virginia, 23 in Chesler) were selected on the basis of a constancy-times-frequency index. Interspecific association patterns were determined by means of simple procedures based on quadrat frequency values for each species in the individual stands. Major environmental variables were recorded at each stand, and soil samples from four depths …
An Argument For The Open Ocean Siting Of Coastal Thermal Electric Plants, Clarence M. Tarzwell
An Argument For The Open Ocean Siting Of Coastal Thermal Electric Plants, Clarence M. Tarzwell
United States Environmental Protection Agency: Publications
A great deal of research is yet to be done before we will definitely know all the effects of thermal electric generating plants. It is evident, however, that the chlorination of the intake water is definitely lethal to a high percentage of planktonic and other organisms; that thermal shock is detrimental to some of the more sensitive forms; that the continued exposure to high temperatures after thermal shock is lethal to many forms, especially the zooplankton; that the screening and turbulence in such plants is lethal to larval fishes and several invertebrates, and that immense amounts of waters are put …
An Embryonic Forestry Program In Coastal British Columbia-Preparation For Management, M Crown
An Embryonic Forestry Program In Coastal British Columbia-Preparation For Management, M Crown
Yale School of the Environment Bulletin Series
No abstract provided.
A Simulation Model For The Management Of Sandhill Cranes, Richard S. Miller, George S. Hochbaum, Daniel B. Botkin
A Simulation Model For The Management Of Sandhill Cranes, Richard S. Miller, George S. Hochbaum, Daniel B. Botkin
Yale School of the Environment Bulletin Series
No abstract provided.
A Simulation Model For The Management Of Sandhill Cranes, Richard S. Miller, George S. Hochbaum, Daniel B. Botkin
A Simulation Model For The Management Of Sandhill Cranes, Richard S. Miller, George S. Hochbaum, Daniel B. Botkin
Yale School of the Environment Bulletin Series
No abstract provided.
Agriculture And Pollution In Western Australia. Part 1. Background, C V. Malcolm
Agriculture And Pollution In Western Australia. Part 1. Background, C V. Malcolm
Journal of the Department of Agriculture, Western Australia, Series 4
For centuries there has been awareness of pollution but it has received dramatic publicity in recent years.
In Western Australia, provisions for its control are written into the Health Act and many other Acts besides the Environmental Protection Act of 1971.
A number of factors have acted worldwide and locally to increase awareness and concern about pollution, and to justify careful examination of the problems it causes.
Dust Storms Cause Yield Losses, Department Of Agriculture, Western Australia, C. H. Trotman
Dust Storms Cause Yield Losses, Department Of Agriculture, Western Australia, C. H. Trotman
Journal of the Department of Agriculture, Western Australia, Series 4
Farmers and research workers are well aware that heavy grazing during summer loosens and exposes soil to the action of strong winds and summer thunder storms. They also realise that dust storms mean soil loss from paddocks, but until now there has been little idea of the effect of these storms on crop yields in subsequent seasons.
Studies To Develop And Investigate An Inverse Formulation For Numerically Solving Three-Dimensional Free Surface Potential Fluid Flows, Roland W. Jeppson
Studies To Develop And Investigate An Inverse Formulation For Numerically Solving Three-Dimensional Free Surface Potential Fluid Flows, Roland W. Jeppson
Reports
An inverse formulation is developed for solving three-dimensional potential fluid flows which considers the magnitudes of the cartesian coordinates x, y, and z as the dependent variables in the space defined by the potential function and two mutually orthogonal stream surface functions whose intersection defines the physical space streamlines. This formulation reverses the usual role of the variables. In this inverse space irregular boundaries, with unknown position in the physical space, such as free surfaces become plane boundaries, and the space of most potential flow problems is a parallelepiped. The basin partial differential equations resulting from this formulation are nonlinear …
The Hydraulics Of Waste Stabilization Ponds, Gary Z. Watters
The Hydraulics Of Waste Stabilization Ponds, Gary Z. Watters
Reports
The treatment efficiency of waste stabilization ponds depends primarily on the biological factors of type of waste and organic loading. However, the biological activity in a pond is greatly influenced by the environmental conditions of temperature, wind, sunlight, and the hydraulic flow patterns. In the past little attention has been given to the hydraulic characteristics of waste stabilization ponds such as the gross flow patterns within stabilization ponds as affected by the shape of the pond or lagoon, the presence of dead spaces, and positioning of inlets and outlets and the degree of density stratification. These hydraulic flow characteristics will …
The Great Salt Lake And Utah's Water Resources , Utah Water Research Laboratory
The Great Salt Lake And Utah's Water Resources , Utah Water Research Laboratory
Reports
Introduction: It is appropriate to introduce these proceedings with a brief description of this history and objectives of the American Water Resources Association (AWRA). Quoting from a recent information borchure published by the AWRA, it is a non-profit, scientific organization that was incorporated in the State of Illinous in March, 1964, with headquarters in Urbana, Illinois. A major factor in the establishment of the AWRA was the need for an organization to encourage and foster interdisciplinary communication between professionals of diverse backgrounds working on all aspects of water resources problems. The principal objectives of AWRA are stated briefly as follows: …
Water Management Research In Arid And Sub-Humid Lands Of Less Developed Countries: Fifth Annual Progress Report, Utah State University
Water Management Research In Arid And Sub-Humid Lands Of Less Developed Countries: Fifth Annual Progress Report, Utah State University
Reports
No abstract provided.