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Articles 1621 - 1650 of 1876
Full-Text Articles in Physical Sciences and Mathematics
Nitrogen Fixation In Virginia Salt Marshes And The Effects Of Chronic Oil Pollution On Nitrogen Fixation In The Mobjack Bay Marshes, Alyce Diane Thomson
Nitrogen Fixation In Virginia Salt Marshes And The Effects Of Chronic Oil Pollution On Nitrogen Fixation In The Mobjack Bay Marshes, Alyce Diane Thomson
Dissertations, Theses, and Masters Projects
N2 fixation rates for several Virginia salt marshes were determined using in situ acetylene-reduction assays. A control and a chronically polluted oil marsh of the mesohaline Mobjack Bay area were sampled over a 1975-76 annual cycle. N2 fixation occurred in all transects which extended from upper mudflat to the Spartina patens zone. An isolated blue-green algal mat exhibited some of the highest N2 fixation rates. Intertidal sediment N2 fixation was patchy, both spatially and seasonally. However average rates (91.45 μg N/m2/h) compared to the estimated N requirement of the graminoid vegetation indicated a significant contribution to the N budget. Vegetation …
Measurement Of Radiative Muon Capture In Calcium, Richard Dennis Hart
Measurement Of Radiative Muon Capture In Calcium, Richard Dennis Hart
Dissertations, Theses, and Masters Projects
No abstract provided.
Theory Of Amorphous Copper-Nickel Alloys, Kun-San Chang
Theory Of Amorphous Copper-Nickel Alloys, Kun-San Chang
Dissertations, Theses, and Masters Projects
No abstract provided.
The Nesting Ecology Of Several Species Of Herons And The Glossy Ibis (Plegadis Falcinellus) In Three Heronries In Virginia, Barbara Susan Warren
The Nesting Ecology Of Several Species Of Herons And The Glossy Ibis (Plegadis Falcinellus) In Three Heronries In Virginia, Barbara Susan Warren
Dissertations, Theses, and Masters Projects
No abstract provided.
The Effects Of Conditioning The American Oyster (Crassostrea Virginica) With Tetraselmis Suecica And Cornstarch On The Growth, Vigor And Survival Of Its Larvae, Laura Lee Creekman
The Effects Of Conditioning The American Oyster (Crassostrea Virginica) With Tetraselmis Suecica And Cornstarch On The Growth, Vigor And Survival Of Its Larvae, Laura Lee Creekman
Dissertations, Theses, and Masters Projects
A comparison of effects of conditioning adult oysters (Crassostrea virginica) with Cornstarch and/or Tetraselmis suecica and raw water were determined on subsequent larval growth, vigor and successful metamorphosis. Possible correlations of lipid content of eggs and larval growth, vigor and metamorphosis was also examined. Results illustrated the effectiveness of Cornstarch when used as a supplemental conditioning agent for producing larvae and spat in greater quantity and of better quality than the other conditioning diets employed. Investigation revealed that lipid content of eggs is an important indicator for larval growth, vigor, set and successful metamorphosis. This dissertation is from the Joint …
The Effects Of Pollution On Benthic Communities Of The Tidal James River, Virginia, Robert J. Diaz
The Effects Of Pollution On Benthic Communities Of The Tidal James River, Virginia, Robert J. Diaz
Dissertations, Theses, and Masters Projects
Benthic communities in the estuarine portion of the James River are controlled mainly by salinity. Pollution effects are localized and difficult to assess because of the rigorous physical environment. Mesohaline and oligohaline communities were very similar to those in other east coast estuaries. except for the dominance of Rangia cuneata in the oligohaline zone. Communities of the tidal freshwater zone are most affected by pollution. In the areas of Richmond and Hopewell, where the major portion of the pollution load enters the river, communities are most severely depressed. Separate multivariate analyses of species distributional patterns, and pollution and physical parameters …
Copper And Zinc In Bottom Sediments And Oysters, Crassostrea Virginica, From Virginia's Estuaries, R. J. Huggett
Copper And Zinc In Bottom Sediments And Oysters, Crassostrea Virginica, From Virginia's Estuaries, R. J. Huggett
Dissertations, Theses, and Masters Projects
No abstract provided.
Forecasting Beach Erosion Along The Oceanic Coastlines Of The Northeast And Mid-Atlantic States, William S. Richardson
Forecasting Beach Erosion Along The Oceanic Coastlines Of The Northeast And Mid-Atlantic States, William S. Richardson
Dissertations, Theses, and Masters Projects
No abstract provided.
Effect Of Various Algal Diets And Larval Density In The Larviculture Of The American Oyster, Crassostrea Virginica (Gmelin), Nancy T. Windsor
Effect Of Various Algal Diets And Larval Density In The Larviculture Of The American Oyster, Crassostrea Virginica (Gmelin), Nancy T. Windsor
Dissertations, Theses, and Masters Projects
No abstract provided.
Cross Field Current Instabilites In A Vlasov Plasma, Don S. Lemons
Cross Field Current Instabilites In A Vlasov Plasma, Don S. Lemons
Dissertations, Theses, and Masters Projects
No abstract provided.
The Effects Of Environmental Variables On The Heart Rate Of Invertebrates, Peter L. Defur
The Effects Of Environmental Variables On The Heart Rate Of Invertebrates, Peter L. Defur
Dissertations, Theses, and Masters Projects
No abstract provided.
Dielectric Relaxation In The Uhf And Rf Regions, Theodore Bryant Kingsbury
Dielectric Relaxation In The Uhf And Rf Regions, Theodore Bryant Kingsbury
Dissertations, Theses, and Masters Projects
No abstract provided.
Effects Of Petroleum Hydrocarbons On Salt Marsh Communities, Carleton H. Hershner Jr.
Effects Of Petroleum Hydrocarbons On Salt Marsh Communities, Carleton H. Hershner Jr.
Dissertations, Theses, and Masters Projects
This dissertation is from the Joint Program Degree from the College of William & Mary and University of Virginia and awarded by the University of Virginia.
The effects of petroleum hydrocarbons on salt marsh grasses and gastropods were examined under three different circumstances. In the first study reported, a small pocket marsh was repeatedly dosed with small amounts of a No. 2 fuel oil. The second study investigated the effects of a large accidental spill of No. 6 fuel oil. The third study involved single doses of a fresh and a weathered crude oil on artificially enclosed segments of marsh.
The Effects Of Petroleum On The Salt Marsh Ecosystem, James L. Lake
The Effects Of Petroleum On The Salt Marsh Ecosystem, James L. Lake
Dissertations, Theses, and Masters Projects
No abstract provided.
A Mathematical Model Of Chincoteague Bay, Virginia, John Joseph Vaccaro
A Mathematical Model Of Chincoteague Bay, Virginia, John Joseph Vaccaro
Dissertations, Theses, and Masters Projects
No abstract provided.
The Mechanism Of The Meyer-Schuster Rearrangement, Carol Virginia Roane
The Mechanism Of The Meyer-Schuster Rearrangement, Carol Virginia Roane
Dissertations, Theses, and Masters Projects
No abstract provided.
Geomorphic Interpretation Of Vegetation On Fisherman Island, Virginia, Mark Eliot Boule
Geomorphic Interpretation Of Vegetation On Fisherman Island, Virginia, Mark Eliot Boule
Dissertations, Theses, and Masters Projects
No abstract provided.
Pressure Anisotropy Effects On The Stability Of The Guiding Center Model Of The Bumpy Theta Pinch, Michael J. Schmidt
Pressure Anisotropy Effects On The Stability Of The Guiding Center Model Of The Bumpy Theta Pinch, Michael J. Schmidt
Dissertations, Theses, and Masters Projects
No abstract provided.
The Influence Of Environmental Salinity On Hemocyanin Function In The Blue Crab, Callinectes Sapidus, Alan Lawson Weiland
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.
Quadrupole Modulation Of Nmr Free Induction Decays, M. Kent Cueman
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
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
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
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
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.
The Biology Of The Sandbar Shark Carcharhinus Plumbeus (Nardo, 1827) In The Lower Chesapeake Bay And Adjacent Waters, Edward Fenton Lawler
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
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
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
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
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
The Morphology And Processes Of The Virginia Chesapeake Bay Shoreline, Peter Stuart Rosen
Dissertations, Theses, and Masters Projects
No abstract provided.