Physical Sciences and Mathematics Commons^™

The Influence Of Environmental Salinity On Hemocyanin Function In The Blue Crab, Callinectes Sapidus, Alan Lawson Weiland

Dissertations, Theses, and Masters Projects

No abstract provided.

Sufficient Conditions For An Operator-Valued Feynman-Kac Formula, Michael D. Grady

Mathematics, Statistics and Data Science Faculty Works

Let E be a locally compact, second countable Hausdorff space and let X(t) be a Markov process with state space E. Sufficient conditions are given for the existence of a solution to the initial value problem, ∂u/∂t,=Au + V(x) * u, u(0) = f, where A is the infinitesimal generator of the process X on a certain Banach space and for each x ∈ E, V(x) is the infinitesimal generator of a C₀ contraction semigroup on another Banach space.

1976 Long Term Rotation Trials, Ian Rowland

Experimental Summaries - Plant Research

Long term rotation trials - W56H, 66M29, 67C13, 67N4, 68E5, 68SG5, 69GE20, 73SG16, Soil fertility - grain lupins - 75TS23.

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 …

Quadrupole Modulation Of Nmr Free Induction Decays, M. Kent Cueman

Dissertations, Theses, and Masters Projects

No abstract provided.

Stability And Spectra Of The Bumpy Theta Pinch, Thomas E. Cayton

Dissertations, Theses, and Masters Projects

No abstract provided.

Isolation And Characterization Of Estuarine And Marine Sedimentary Humic Acids, John G. Windsor Jr

Dissertations, Theses, and Masters Projects

No abstract provided.

Geomorphic Processes Of A Drowned River Valley, Lower York River Estuary, Virginia, Michael Joseph Carron

Dissertations, Theses, and Masters Projects

No abstract provided.

A Two-Dimensional Stratospheric Model Of The Dispersion Of Aerosols From The Fuego Volcanic Eruption, Carolyn Frances Jones

Dissertations, Theses, and Masters Projects

No abstract provided.

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.

Coastal Data Acquisition, Compilation And Analysis, Virginia Beach Coastal Compartment, Southeastern Virginia : Quarterly Technical Status Report December 1, 1975 - February 29, 1976, Victor Goldsmith, Susan Strum, George Thomas

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 …

The Biology Of The Sandbar Shark Carcharhinus Plumbeus (Nardo, 1827) In The Lower Chesapeake Bay And Adjacent Waters, Edward Fenton Lawler

Dissertations, Theses, and Masters Projects

No abstract provided.

Development Of A Tidal Prism Model And Its Application To The Pagan River, Virginia, Angela D'Amico

Dissertations, Theses, and Masters Projects

No abstract provided.

An Examination Of Shoaling Wave Parameters, Lee Weishar

Dissertations, Theses, and Masters Projects

No abstract provided.

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

Dissertations, Theses, and Masters Projects

No abstract provided.

Life History Of The Spotfin Killifish, Fundulus Luciae (Pisces Cyprinodontidae), In Fox Creek Marsh, Virginia, Donald M. Byrne

Dissertations, Theses, and Masters Projects

No abstract provided.

The Morphology And Processes Of The Virginia Chesapeake Bay Shoreline, Peter Stuart Rosen

Dissertations, Theses, and Masters Projects

No abstract provided.

Two Electron Bond-Orbital Model, Chuping. Huang

Dissertations, Theses, and Masters Projects

No abstract provided.

Deep-Inelastic Electroproduction Of Pions In A Quark-Parton Model ; Pion-Deuteron Elastic Scattering And The Pion-Pion Scattering Lengths, Mary Elizabeth. Vislay

Dissertations, Theses, and Masters Projects

No abstract provided.