Physical Sciences and Mathematics Commons^™

Efficiency Of Sprinkler Irrigation Systems, T C. Calder

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

Shallow-rooted vegetable crops growing on sandy soils in hot, often windy summer weather, pose a difficult watering problem for most Western Australian vegetable growers.

Irregularities in wetting patterns are common. Wind effects are seldom taken into account in system design. The increasing popularity of knocker-type sprinklers makes these considerations particularily important.

Distribution, Age, And Growth, And Feeding Ecology Of Paddlefish (Polyodon Spathula) In Unaltered Missouri River, South Dakota, Rudolph S. Rosen

Electronic Theses and Dissertations

Four hundred eighty-four paddlefish (Polyodon spathula) were captured 26 June 1975 to 11 August 1976 from an unaltered stretch of Missouri River in South Dakota. Vital statistics were measured on all fish, 171 were sacrificed during the analysis of food habits, and 301 fish were tagged and released. Paddlefish were located by observation, gill netting, and snagging. Paddlefish were primarily found downstream from submerged sandbars from late spring to early fall. The crests of the sandbars were 0.1 to 1.0 m deep and immediately downstream, the depth was 1.5 to 4.5 m, and the current velocity was 0 to 0.3 …

Use Of Stockpods For Nesting By Giant Canada Geese, Paul M. Bultsma

Electronic Theses and Dissertations

A study of giant Canada geese (Branta canadensis maxima) nesting on stockponds in western South Dakota was conducted during 1974 and 1975. Analysis of 10 selected variables at nests on natural sites indicated that distance of water below high water level and percent slope from wetland to horizon, contributed the most to the use of the site. Distance from wetland to horizon and disturbance factors were two important variables measured to determine use of artificial nesting structures. First nests were initiated on 1 April 1974 and 8 April 1975. Twenty-five nests (16 percent) were located on artificial nesting structures, and …

The Aquatic Ecology Of Two Seasonal Marshes In Eastern South Dakota, Walter K. Donaldson

Electronic Theses and Dissertations

Zooplankton, benthos, nekton, aufwuchs, and the physical-chemical limnology of two seasonal marshes in eastern South Dakota were monitored from April-June 1975. Bothwell and Lund Marshes contained water from 15 April-July 1975. The dominant i. ons, Ca ++, Mg+ +, and sulfate, made the water hardness non-carbonate. Floating vegetation, Lemna trisulca and Cladophora sp., became abundant in both marshes during the first week of June, and formed large thick mats by the end of June 1975. Daphnia pulex was the dominant zooplankter in Bothwell Marsh and made up 33% of the zooplankton density during the 1975 season. The population was triacmic, …

Effects Of P.L. 566 Stream Channelization On Wetlands In The Prairie Pothole Region, Ronald E. Erickson

Electronic Theses and Dissertations

The Wild Rice Creek Watershed project, in North and South Dakota was constructed under authority of the Small Watershed Protection and Flood Prevention Act (P.L. 83-566 as amended). Structural measures included 24.7 miles of channelization and four floodwater retarding dams. To measure the degree that channelization influenced drainage of prairie wetlands, drainage rates in a channelized tributary were compared to rates in an unchannelized tributary of Wild Rice Creek. Channelization had a direct impact on wetlands by channel drainage reduction of overbank flows, and by providing drainage outlets. Indirect (secondary) wetland losses are believed to have occurred outside of the …

Analysis Of Aerial Surveys And Tolerance Of Landowners For A Canada Goose Flock In Northeastern South Dakota, Thomas C. Tacha

Electronic Theses and Dissertations

Four hundred rural landowners were interviewed in Day and Marshall counties in South Dakota in 1974 and 1975. These 400 interviews included 200 interviews with landowners living within 6.4 km of the three major summer-fall goose concentration areas and 200 interviews from a random sample of landowners living in the study area. Eighty-six percent of the interviewed landowners indicated that it was a good idea to expand the northeastern South Dakota Canada goose flock from 2,000 to 5,000 birds. Only 6 percent of the landowners had complaints about the geese, despite the fact that 23.5 percent of them had received …

An Evaluation Of The Fishery Resource In A Portion Of The James River, South Dakota Scheduled For Channel Modification, Dennis Tol

Electronic Theses and Dissertations

The fish populations of a 193 km (120 mi) section of the James River between Tacoma Park and Redfield, South Dakota that is scheduled for stream modification under the Oahe Irrigation project were evaluated from October 74 to July 76. Twenty-two species of fish were captured in the James River between Tacoma Park and Redfield, South Dakota. The fishes use the area primarily as a spawning ground and nursery for young-of-the-year. Evidence of spawning was found for 19 species of fish. Only a residual population of forage fishes, young-of-the-year of various species, and a few adult black bullheads attempt to …

Sharp-Tailed Grouse Nesting And Brooding Habitat In Southwestern North Dakota, Stanley C. Kohn

Electronic Theses and Dissertations

The habitat of nesting and brooding sharp-tailed grouse (Pedioecetes phasianellus) was studied 1 April to 25 August 1973 and 1974. The objective of the study was to determine the quality and quantity of vegetation at nest and brood locations of sharp-tailed grouse in relation to available vegetation within pastures. Five range sites, lowland draw, rolling grassland, upland grassland, rocky outcropping, and claypan were studied. Thirty-four females were trapped on dancing grounds and equipped with radio transmitters. Seventeen nests were located by monitoring the movements of transmitter-equipped hens and 26 nests were located through use of cable-chain drag. Height of vegetation …

Oyster Spatfall On Shellstrings In Virginia Rivers: 1975 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.

Shore Erosion At Tangier Island, Robert J. Byrne

Reports

Tangier Island, in Accomack County, Virginia, is the southernmost of a series of islands separating Chesapeake Bay from Tangier and Pocomoke Sounds (Figure 1) . With the exception of three sand ridges, which are the populated areas, the island is low lying marsh and tidal flat deposits with elevations generally below 6 feet (MLW datum).

Shoreline Situation Report Prince William County, Virginia, Lynne M. Rogers, Dennis W. Owen, Margaret H. Peoples, Robert J. Byrne, Carl H. Hobbs Iii

Reports

No abstract provided.

Vims Statement Portsmouth Refinery, Virginia Institute Of Marine Science

Reports

With regard to the Proposed Final Environmental Impact Statement issued by the U. S. Army Corps for the Portsmouth Refinery and Marine Terminal , we shall comment on four subject areas which the statement discusses.· These are 1) the potential impact of new pollutant loadings in the lower James River, · 2) the potential impact of oil spills, 3) transportation risks and 4) the effects of dredging for the marine terminal. In addition, comments are included which address: 1) interagency communications regarding oil spills in the Bay region, 2) safety precautions taken during the transportation of oil by vessels in …

Fine Scale Circulation Near "Foxtrot" In Hampton Roads, Virginia, Christopher S. Welch, Bruce J. Neilson

Reports

During 1974 the Virginia Institute of Marine Science conducted a series of oceanographic, water quality and modeling studies for the outfall from the proposed Nansemond Wastewater Treatment Plant (VIMS, 1975). One of these studies included dye releases to determine the dispersion and transport of material discharged to Hampton Roads near Pig Point. These dye releases were made from the munitions loading piers known as "Foxtrot".

The proposed outfall, as given in the Facilities Plan is located roughly one kilometer to the east-south-east of Foxtrot. Tidal circulation in Hampton Roads is quite complex and there was concern that the distribution patterns …

Local Environmental Management, A Case Study: The Virginia Wetlands Act, 1972-1974, John Claiborne Jones

Dissertations, Theses, and Masters Projects

No abstract provided.

An Analysis Of Conservation Authority Decision Making As To The Acquisition And Development Of Open Space Resources, James C. Johnston

Theses and Dissertations (Comprehensive)

No abstract provided.

Shoreline Situation Report Gloucester County, Virginia, Gary L. Anderson, Gaynor B. Williams, Margaret H. Peoples, Lee Weishar, Robert J. Byrne, Carl H. Hobbs Iii

Reports

No abstract provided.

Water Quality In The Small Coastal Basins, Bruce J. Neilson

Reports

The Small Coastal Basins portion of the Hampton Raods 208 study area includes the Back and Poquoson Rivers on the Virginia Peninsula and Little Creek Harbor and the Lynnhaven Bay system on the southern shore of Chesapeake Bay, as shown in Figure 1. The drainage areas are characteristically small, ranging from only 63 square kilometers for Little Creek Harbor to 156 sq. km,for the Lynnhaven Bay system. All four basins lie entirely within the geological Coastal Plain Province, the low lying area between the Fall Line and the Atlantic Ocean. The soft sediments typical of this province erode easily, so …

Proceedings Of The Great Plains Wildlife Damage Control Workshop, F. Robert Henderson

Great Plains Wildlife Damage Control Workshop Proceedings

Program Planning Committee

Committee Proposals For Development Of A Great Plains Wildlife Damage Control Handbook

Great Plains Wildlife Damage Control Workshop Proceedings

In 1969, Bob Henderson developed a two-volume Wildlife Damage Control Handbook for use by county extension agents throughout Kansas. The handbook was well received and was felt to be of definite value to the overall wildlife damage control program in Kansas.

Bats, Biology, And Control, Stephen P. Kincaid

Great Plains Wildlife Damage Control Workshop Proceedings

Although bats are not commonly thought of as major members of the animal kingdom, they are one of the most numerous of land vertebrates. Bats are thought to have originated in the Old Wordl Tropics and are now almost world-wide in distribution. Bats make up the order Chiroptera, and they are closely related to the hedgehog, shrew and mole.

The Coyote As A Game Animal, Edward L. Kozicky

Great Plains Wildlife Damage Control Workshop Proceedings

Coyote hunting is a very special challenge. Even though coyotes may be abundant in an area, that doesn't mean that they're easy to bag with a rifle. However, I happen to enjoy coyote calling to the point where the shooting is almost anti-climax. Others like to hunt coyotes with either sight or trail hounds, to pursue coyotes with all-terrain vehicles, and to spot coyotes while driving through the country.

Bird Control, Glen Orr

Great Plains Wildlife Damage Control Workshop Proceedings

We started our program in 1967 primarily because of an economic problem in the downtown area of Wichita. We had about eight square blocks of businesses which were not getting any business because people didn't dare go downtown in the evening unless they wore their rain hats and rain gear, and I mean this literally.

Prairie Dog Control, A. Orville Sandall

Great Plains Wildlife Damage Control Workshop Proceedings

Before poisons were taken from the market, I had about fifteen years experience working for the Fish and Wildlife Service doing prairie dog control work. Most of this work was done for private landowners and supervising work crews for the Forest Service and B&A.

Waterfowl Damage Control, Marvin D. Schwilling

Great Plains Wildlife Damage Control Workshop Proceedings

Waterfowl damage is primarily grain crop depredation that occurs on various agricultural crops, particularly in fall and winter. Field feeding begins as birds flock up on staging areas in preparation for their move along migration routes to the wintering areas.

Ground Squirrels And How To Control Them, Irving J. Mork

Great Plains Wildlife Damage Control Workshop Proceedings

The Richardson ground squirrel, otherwise known as the flickertail or gray gopher, is common over most of North Dakota north and east of the Missouri River, although they were never common in the immediate Red River Valley.

Fish Population Manipulation, Robert E. Schoonover

Great Plains Wildlife Damage Control Workshop Proceedings

Fish population manipulation or control, as the term implies, may be defined as an operation or activity which results in the total removal of fish from a water area, the partial elimination of a fish population, or the selective removal of a species from a water area.

Snake Control, Steve Thompson

Great Plains Wildlife Damage Control Workshop Proceedings

Whether wild animals are benificial or injurious depends on the time and the place. It seems that no one likes to have venomous or even harmless snakes in his corral, in his yard, or even on his doorstep; but every spring and fall many people are confronted with this situation. Many requests are recieved each year on how to rid an area of these unwanted reptiles.

Roster

Great Plains Wildlife Damage Control Workshop Proceedings

Roster
Great Plains Wildlife Damage Control Workshops
December 8-11, 1975

An Overview Of Problem Bird Management - Rural And Urban, Joseph L. Guarino

Great Plains Wildlife Damage Control Workshop Proceedings

The economic impact of birds on agricultural crops in the U.S. is quite substantial -- perhaps as much as $100 million dollars. Methods for reducing this damage can be categorized as biological, mechanical, and chemical. The chemical approach appears to have the most potential. An avian repellent, methiocarb, has proven to be effective for reducing damage by a variety of species of birds to many sprouting and ripening crops and fruit. An avian chemical frightening agent, 4-aminopyridine (Avitrol), if federall registered for use for protecting ripening field corn and sweet corn and was shown to be effective for reducing damage …

Bird Control, George C. Halazon

Great Plains Wildlife Damage Control Workshop Proceedings

We did a little work with pigeon sterilants six years ago. We didn't really have too much luck on bird control on pigeons because of the life of the pigeon. In other words we couldn't do it fast enough to satisfy the public because of the relatively large numbers of years required before the bird dies.