Digital Commons Network^™

Manual Of Erosion Control Principles And Practices, Calvin G. Clyde, C. Earl Israelsen, Paul E. Packer, Eugene E. Farmer, Joel E. Fletcher, Eugene K. Israelsen, Frank W. Haws, N. V. Rao, Jay Hansen

Reports

No abstract provided.

Hydraulic Characteristics Of Pvc Pipe In Sanitary Sewers (A Report Of Field Measurements), Ronald R. Bishop

Reports

Introduction: Since pipe made of poly vinyl chloride (PVC) is relatively new, its hydraulic characteristics that cause fluid friction head loss are not as well known as those of cast iron and concrete pipe. The lack of universally accepted roughness parameters for PVC pipe is attested by the fact that most textbooks dealing with the hydraulics and the fluid mechanics do not include such values. The hydraulic characteristics of PVC pipe have been measured in the laboratory studies for both open channel flow conditions, Neale and price (1), and for full flow conditions, Jeppson (2). However, no studies are known …

Mathematical Modeling Of A Sociological And Hydrologic Decision System, Wade H. Andrews, J. Paul Riley, Malcolm B. Masteller

Reports

The general goal of this study was to develop a functional model of the sociological and related hydrologic elements in flood control decision-making. Conceptual system models were developed for the hydrologic system and for the sociological system. The sociological variables were identified as they related to the steps in the process of the model. Following the conceptual decision process model the social elements of the model were calibrated from data obtained from field studies and mathematical equations were developed and tested. Finally simulations of the process were run. After adjustments were made the model was found to function. Several methodological …

Salinity Management Options For The Colorado River. Damage Estimates And Control Program Impacts, F. Bruce Brown, Joel R. Cannon, Ralph C. D'Arge, Larry Eubanks, W. T. Franklin, Charles W. Howe, Ernest B. Jackson, K. L. Leathers, Frank E. Robinson, Don Snyder, Jeffrey T. Young, Robert A. Young

Reports

Rivers draining arid basins increase in salinity content in the downstream area to the point where water users are often significantly damaged. The problem in some cases can be ameliorated by altering upstream water and land use practices. An economic trade off exists between the cost of such upstream efforts and the downstream benefits achieved. This report examines options for salinity management in the Colorado River Basin. The study sought to provide additional information to estimate 1) economic damages caused by various salt concentrations to agricultural and municipal water users and 2) economic costs of salinity control measures by upstream …

Environmental Quality 1977 - Hillsborough County Florida, A. J. Shaw, R. G. Wilkins, Hillsborough County Environmental Protection Commission

Reports

Air pollutant sampling was conducted at 87 locations in Hillsborough County during 1977. Location of sampling stations and pollutants sampled are shown on Maps and Tables at end of this Air Section. About 72,000 Air Samples are summarized and detailed in this report.

1901 river, stream, and sewage treatment plant samples were analyzed during 1977 for up to 49 different types of water pollution resulting in 25,421 individual water quality measurements. About one-half of these water quality measurements were generated from Bay or River samples collected at the regular networks. About one-fourth were collected by the sewage treatment plant monitoring …

Bird Utilization Of Woodland Habitat In The Eastern Quarter Of South Dakota, John M. Emmerich

Electronic Theses and Dissertations

Bird utilization of narrow, riparian woodland; riparian; block-like, tree claim; and linear, single-row windbreak habitats in the eastern quarter of South Dakota were studied during the spring migration, reproductive, and winter seasons. The relative importance of these three habitats and multi-row shelterbelt habitat was evaluated using bird species diversity (BSD), bird population density, and habitat preferences of individual bird species. Cluster analysis delineated distinctive vegetation cover types in each of the three habitats studied. Bird communities associated with each cover type were tabulated for comparison purposes and predication capabilities. Multiple regression analysis predicted physical and vegetation features of each habitat …

Effects Of Grazing Systems On Sharp-Tailed Grouse Habitat, Samuel N. Mattise

Electronic Theses and Dissertations

Effects of grazing systems on sharp-tailed grouse (Pedioecetes phasianellus jamesi) nesting and brooding habitats in the Little Missouri National Grasslands of southwestern North Dakota were evaluated. Three grazing allotments with deferred-rotation grazing systems and three allotments with season-long grazing systems were randomly selected for study. Fifty measurements of vegetation were taken using the height-density pole on line transects in each of three range sites; rolling grasslands, upland grasslands and lowland draws. Vegetation was sampled in late spring, summer and fall of 1976 and early spring of 1977. Average height-density of vegetation for the season-long grazing system was significantly greater than …

Evaluation Of Fish Stocking In Southeastern South Dakota Ponds, Paul J. Peeters

Electronic Theses and Dissertations

A mail survey was sent to owners of 220 ponds which had received hatchery fish. Based on 187 pond owner responses, at most 45 (24%) of the ponds still contained the fishes stocked. Pond dryness and/or winterkill attributed to the failure of 121 (65%) of the ponds. A subsequent field survey of 30 ponds identified fish populations of recreational value. Attempts were made to identify important pond parameters that contributed to successful fish populations. Aᵼ (percent harvestable fish), F/C (forage to carnivore ratio), balance (in or out), and a scale of balance were the dependent variable used to describe successful …

Wildlife Habitat In The James River Valley, South Dakota, L. Paul Schneider

Electronic Theses and Dissertations

A wildlife habitat inventory was conducted on the 12 485 ha study area of the James River floodplain in north-eastern South Dakota. Included were vegetation mapping, small mammal trapping, waterfowl breeding pair counts, waterfowl brood counts, bird census routes, and general observations. Natural vegetation consisted of 3181 ha of grassland, 2002 ha of woodland, 1115 ha of savannah, and 392 ha of marshland. Small mammal trapping revealed low densities of mostly white-footed mice (Peromyscus spp.). No vegetation type was more valuable to small mammals than any other. Waterfowl breeding pairs, mostly mallard, blue-winged teal, and wood duck, numbered 244 in …

Studies On The Role Of Solar Ultraviolet Radiation In "Natural" Water Purification By Aquatic Ecosystems, John Calkins, Jeanne A. Barcelo, Perry Grigsby, Stephen Martin

KWRRI Research Reports

The possibility that pollution might deplete the stratospheric ozone layer and intensify solar UV at the earth's surface focuses attention on the role of solar UV in the various ecosystems at the earth's surface. Previous studies suggested that solar UV might contribute to bacterial die off in wastewater and the studies reported here were directed toward elucidating the action of solar UV in "natural" waters.

It has been assumed that solar UV action on aquatic ecosystems can be evaluated (using proper models) on the basis of the following four independently measurable quantities: I) the intensity of solar UV at the …

Hydrology And Water Quality In The Central Kentucky Karst: Phase Ii Part A: Preliminary Summary Of The Hydrogeology Of The Mill Hole Sub-Basin Of The Turnhole Spring Groundwater Basin, James F. Quinlan, Donald R. Rowe

KWRRI Research Reports

Water from upland areas flows to small ephemeral and perennial springs that feed sinking streams that are tributary to low-order cave streams. These cave streams, also recharged by diffuse percolation, are part of a dendritic network in which intermediate-order streams join high-order streams that flow to major trunk streams. The trunk in the Mill Hole Sub-basin flows across the bottom of a large karst window, Mill Hole, and joins the trunk of the Patoka Creek Sub-basin. Their combined discharge bifurcates, flows around the collapsed central core of a larger karst window, Cedar Sink, and re-joins to flow as one to …

Fish Of Lake Mead And Lake Mohave, Robert C. Allan, Dennis L. Roden

Publications (WR)

This publication offers an in-depth study of the fish and other organisms that live in Lakes Mead and Mohave. The history and background of the two lakes is offered, as well as information about diseases, parasites, and unusual fish occurrences. Food sources, predation and competition are also discussed.

Diversity And Density Of Shelterbelt Bird Communities, Thomas E. Martin

Electronic Theses and Dissertations

The number of bird species and the density of each species were monitored in 69 shelterbelts in eastern South Dakota during spring migration and breeding seasons in 1976 and 1977. A total of 44 different species of birds were found during breeding and 68 species during spring migration. Approximately 60 to 80% of the species in a shelterbelt eat insects as part of all of their diet. Most of these bird species are territorial. Usually only 1-2 pairs of a territorial species will reside in any one shelterbelt. This low density is caused by the limited habitat area that shelterbelts …

Diet And Nutrition Of The Pronghorn Antelope, Norman C. Messenger

Electronic Theses and Dissertations

Pronghorn antelope (Antilocapra americana) in northwestern South Dakota consumed at least 32 different plants species. Major forage plants were big sagebrush (Artemisia tridentate), silver sage (A. cana), yellow sweet clover (Meliotus officinalis), gold aster (Chrysopsis villosa), and blue grama (Bouteloua gracilis). Cultivated small grain crops were not a major food source of pronghorn. Differences in diet composition, plant groups, plant groups and time of use and plant group, area, month interaction were significant. Average in vitro digestion of 31 food plants was 51 percent. Mean digestion of grasses was 57 percent, forbs 42 percent, and shrubs 55 percent. Yearling male …

Breeding Biology And Prey Selection Of Ferruginous Hawks In Northwestern South Dakota, Charles L. Blair

Electronic Theses and Dissertations

A study of the breeding biology and prey selection of ferruginous hawks (Buteo regalis) was conducted in northwestern South Dakota during 1976 and 1977. Twenty four pairs were located in 1976 and 18 pairs attempted to nest; 17 pairs located in 1977 attempted to nest. The ecological density of breeding pairs was approximately one per 100 km2. Young fledged per nesting attempt averaged 1.89 in 1976 and 2.29 in 1977. All but one nest were located in unbroken, lightly grazed prairie and all were situated on hills, buttes, or river cutbanks. General nest orientation was toward the south and west. …

Fungal Control Methods, Diets And Water Temperatures Used To Culture Paddlefish, Polydon Spathula, Ronald L. Brandt

Electronic Theses and Dissertations

Studies were conducted at Gavins Point National Fish Hatchery, South Dakota, in 1976 and 1977, to evaluate the effects of diet and water temperature on growth and survival of paddlefish, Polyodon spathula, young, and the effects that fungicides have on hatching success and fry survival. The W-7 cool water diet was fed hourly and three times daily while the Liv commercial diet was fed hourly to paddlefish young for 40 days after swim-up. Average survival rate and total length of paddlefish fed W-7 hourly were 16.0% and 30 mm, those fed W-7 three times daily were 10.0% and 23 mm, …

Non-Game Birds In Relation To Habitat Variation On South Dakota Wetlands, Michael J. Weber

Electronic Theses and Dissertations

Non-game birds on South Dakota wetlands were surveyed on 476 quarter sections representing the major portion of South Dakota excluding the Missouri River and its impoundments and the Black Hills. Two surveys were conducted, one in May and a second in June, in both 1975 and 1976. The distribution of 13 non-game species was analyzed by physiographic strata and wetland classification: red-winged blackbird {Agelaius phoeniceus), yellow-headed blackbird (Xanthocephalus xanthocephalus), Wilson's phalarope (Steganopus tricolor), black tern (Chlidonias niger), lesser yellowlegs (Totanus flavipes), sora {Porzana carolina), marbled godwit (Limosa fedoa), willet (Catoptrophorus semipalmatus), American avocet (Recurvirostra americana}, American bittern {Botaurus lentiginosus), great …

Cost Allocation Alternatives For The Senegal River Development Program, J. Paul Riley, Jay C. Andersen, A. Bruce Bishop, David S. Bowles, John E. Keith

Reports

The primary purpose of the study reported herein is to present methods for using estimated project benefits as the basis for distributing the capital, oeprating, maintenance, and replacement costs associated with the proposed Senegal River development program. The problem is complicated because the Senegal River is an international stream, so that it is necessary to consider not only the various economic use sectors involved with the program, but also the three separate countries of Mali, Mauritania, and Senegal. In attempting to meet the primary objective stated above, the report proposes an economic model which estimates economic benefits of the development …

The Great Basin Climate Study For Range Fire Management, Kenneth G. Hubbard, Joel E. Fletcher

Reports

The BLM (Bureau of Land Management) fire management personnel routinely use a fire danger computer program to estimate the effects of recent weather upon the fire hazard on the BLM rangeland sites. The program used for this purpose is the National Fire Danger Rating System (NFDRS) which was developed by the National Forest Service (Deeming, 1978). The NFDRS was used in conjunction with fire weather stations in the Great Basin for the dual purposes of evaluating the ability of NFDRS to predict fire danger and of determining the effectiveness of the present fire station network in detecting fire weather on …

Comprehensive Plan For Fish And Wildlife On Nebraska National Forest System Lands

Nebraska Game and Parks Commission: Publications

Wildlife and fish are integral and functional parts of forest and grassland environments. Application of this plan should improve and maintain habitats, as well as the types and populations of wildlife species within them. Various types of habitat manipulation are effective means of improving such environments to produce a diversified and sustained supply of wildlife. and fish. Direct habitat improvement and coordination with other resource management programs will be used to help realize the management objectives as they concern lands under Forest Service administration. However, this plan is not a "recipe book," requiring specified ingredients or actions. Rather it provides …

The Mcconaughy Rainbow...Life History And A Management Plan For The North Platte River Valley, Rodney C. Van Velson

Nebraska Game and Parks Commission: Publications

McConaughy Reservoir and the North Platte River drainage upstream to the Nebraska-Wyoming state line represent a major part of the coldwater habitat in Nebraska, 87%, according to the 1972 Nebraska Fish and Wildlife Plan (Figure 1). The plan also showed the upper North Platte River drainage contains 159 miles of coldwater stream habitat and 192 miles of mixed cold and warm water stream habitat, 29 percent of the total mileage in the state. Together, these 351 miles account for 80 percent of the coldwater stream acreage in Nebraska.

McConaughy Reservoir and the North Platte River drainage rainbow trout fishing attracts …

A Simulation Model For Ring-Necked Pheasants, Melvin W. Taylor

Nebraska Game and Parks Commission: Staff Research Publications

One of the most important game birds in the United States is the ring-necked pheasant (Phasianus colchicus). This Asian refugee has provided recreation for untold numbers of sportsmen. Its presence has meant millions of dollars for state game agency coffers, not to mention its impact on local economies. Pheasant populations have fluctuated widely in past years, but the overall trend since the early 1960's has been downward over most of the pheasant range. This decline was caused primarily by loss of habitat due to change in agricultural land use (Mohlis 1974, Dahlgren 1963, Kobriger 1972, Taylor et al. …

Water Current, Volume 10, No. 1, January/February 1978

Water Current Newsletter

Nebraska Water Resources Center Annual Report 1977
Water Resources Seminars
Deadline for Submitting Annual Allotment Proposals
Slide-Tape Show Available
Grantsmanship Training Program Planned
Paper Presented at AGU Meeting
Water Resources in Nebraska
Manuel Morris Named OWRT Deputy Director
National Irrigation Water Study Announced
New Director at New Mexico
Model Implementation Program (USDA-EPA)
Workshop on Storm Sewer Design
AWRA Conference
Papers Solicited for ASAE Meeting
Short Course on Unsteady Flow in Pipelines
Research Review: Nitrogens Losses from Sprinkler Applied Nitrogen Fertilizer

Social And Spatial Relationships Of Coyote Families And Neighboring Coyotes, Althoff D. P.

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Water Movement Through Soil, R A. Nulsen

Journal of the Department of Agriculture, Western Australia, Series 4

Even a good quality stock water moving to the surface can cause a salinity problem in only a few years.

The Dryland Salinity Problem In North America, P R. George

Journal of the Department of Agriculture, Western Australia, Series 4

North america also has a dryland salinity problem although the source is different.

Movement And Migration Patterns Of Red-Winged Blackbirds: A Continental Overview, Richard A. Dolbeer

United States Department of Agriculture Wildlife Services: Staff Publications

From 1924 through 1974, about 11,000 recoveries accumulated from the banding of over 700,000 Red-winged Blackbirds(Agelaius phoeniceus) in North America. A few studies have examined some of these data for specific localities during certain times of the year; however, no attempt has been made to examine the total recovery data to compile a general picture of continental movement and migration patterns. Increasing attention is being given to blackbird (Icteridae) and Starling (Sturnus vulgaris) populations in North America because of their reported crop depredations, health hazards, and nuisance aspects, especially when congregating in large roosts (Meanley,1975;Graham, 1976). Solutions to these problems …

Ten-Year Index To The Prairie Naturalist Vols. 1-10 (1968-1978), Virginia Steinhaus

The Prairie Naturalist

11 pages

From: ACANTHOMYOPS CLAVIGER,

to: Zink, R.M.,

The Effects Of Sulphur Dioxide On Selected Hepatics, Steven L. Gatchel

Masters Theses

Extensive studies have been reported on the air pollutant sulphur dioxide (SO₂), and its effects on vascular and nonvascular plants. It has been shown to interrupt normal physiology, metabolism, reproduction, and alter the plant’s morphology.

Of the cryptogams, lichens have been extensively used as biological indicators of air pollution. More recently, bryophytes have been shown to be as sensitive to contaminates as lichens, and may exhibit responses to the pollutant similar to those of vascular and nonvascular plants. The threshold sensitivity of these cryptogams is about 0.5 ppm over a 12 hour period. However no study to date …

Cost-Effectiveness Of Air Pollution Control In Illinois, 1970-1976, Timothy E. Sullivan

Masters Theses

No abstract provided.