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Full-Text Articles in Physical Sciences and Mathematics

Public Beach Assessment Report Gloucester Point Public Beach, Gloucester County, Virginia, Donna A. Milligan, C. Scott Hardaway Jr., George R. Thomas Nov 1996

Public Beach Assessment Report Gloucester Point Public Beach, Gloucester County, Virginia, Donna A. Milligan, C. Scott Hardaway Jr., George R. Thomas

Reports

Gloucester Point Public Beach is located at the southern end of Gloucester County, Virginia on the York River. It is a southeastward facing shoreline about 960 ft long and it is part of a larger stretch of moderately low shore between Sarah Creek and the George P. Coleman Bridge. While no shoreline improvement projects have taken place at the public beach, shore protection projects updrift and including the Virginia Institute of Marine Science (VIMS) affect it. In 1983, erosion along the shoreline at VIMS just updrift of the public beach led to the installation of a riprap revetment in front …


Distribution Of Submerged Aquatic Vegetation In The Chesapeake Bay And Tributaries And Chincoteague Bay - 1995, Robert J. Orth, Judith F. Nowak, Gary F. Anderson, David J. Wilcox, Jennifer R. Whiting, Leah S. Nagy Nov 1996

Distribution Of Submerged Aquatic Vegetation In The Chesapeake Bay And Tributaries And Chincoteague Bay - 1995, Robert J. Orth, Judith F. Nowak, Gary F. Anderson, David J. Wilcox, Jennifer R. Whiting, Leah S. Nagy

Reports

No abstract provided.


Public Beach Assessment Report Yorktown Public Beach, Yorktown, Virginia, Donna A. Milligan, C. Scott Hardaway Jr., George R. Thomas Nov 1996

Public Beach Assessment Report Yorktown Public Beach, Yorktown, Virginia, Donna A. Milligan, C. Scott Hardaway Jr., George R. Thomas

Reports

No abstract provided.


The Virginia Wetlands Report Vol. 11, No. 3, Virginia Institute Of Marine Science Oct 1996

The Virginia Wetlands Report Vol. 11, No. 3, Virginia Institute Of Marine Science

Virginia Wetlands Reports

  • Great Blue Heron. Julie G. Bradshaw
  • Weakfish. Lyle Varnell
  • Geographic Information Systems Support Tributary Strategy Planning in Virginia. Marcia Berman
  • Wetlands and Regional Watershed Management. Katie Hopkins
  • Cranberries. Pam Mason
  • What is a groin and how does it work? William Roberts


Detritus: Mother Nature's Rice Cake, Pamela Mason, Lyle M. Varnell, Virginia Institute Of Marine Science, Wetlands Program Oct 1996

Detritus: Mother Nature's Rice Cake, Pamela Mason, Lyle M. Varnell, Virginia Institute Of Marine Science, Wetlands Program

Reports

No abstract provided.


Methods Of Risk Analysis: Traditional And Ecological Approaches, John Buie, Virginia Institute Of Marine Science, Wetlands Program Aug 1996

Methods Of Risk Analysis: Traditional And Ecological Approaches, John Buie, Virginia Institute Of Marine Science, Wetlands Program

Reports

No abstract provided.


Research Needs For The Risk Assessment Of Health And Environmental Effects Of Endocrine Disruptors: A Report Of The Us Epa-Sponsored Workshop, Rj Kavlock, Gp Daston, C Derosa, P Fennercrisp, Le Gray, S Kaattari, Et Al Aug 1996

Research Needs For The Risk Assessment Of Health And Environmental Effects Of Endocrine Disruptors: A Report Of The Us Epa-Sponsored Workshop, Rj Kavlock, Gp Daston, C Derosa, P Fennercrisp, Le Gray, S Kaattari, Et Al

VIMS Articles

The hypothesis has been put forward that humans and wildlife species have suffered adverse health effects after exposure to endocrine-disrupting chemicals. Reported adverse effects include declines in populations, increases in cancers, and reduced reproductive function. The U.S. Environmental Protection Agency sponsored a workshop in April 1995 to bring together interested parties in an effort to identify research gaps related to this hypothesis and to establish priorities for future research activities. Approximately 90 invited participants were organized into work groups developed around the principal reported health effects-carcinogenesis, reproductive toxicity, neurotoxicity, and immunotoxicity--as well as along the risk assessment paradigm--hazard identification, dose-response …


Advances In Wetland Status And Trends Monitoring Cumulative Error Comparisons, Stacie A.C. Nelson, Virginia Institute Of Marine Science, Wetlands Program Jun 1996

Advances In Wetland Status And Trends Monitoring Cumulative Error Comparisons, Stacie A.C. Nelson, Virginia Institute Of Marine Science, Wetlands Program

Reports

No abstract provided.


Restoration And Creation Of Forested Wetlands: A Guide, Cathy Palmintier, Bonny Lee Appleton, Virginia Institute Of Marine Science, Wetlands Program Apr 1996

Restoration And Creation Of Forested Wetlands: A Guide, Cathy Palmintier, Bonny Lee Appleton, Virginia Institute Of Marine Science, Wetlands Program

Reports

No abstract provided.


The Virginia Wetlands Report Vol. 11, No. 2, Virginia Institute Of Marine Science Mar 1996

The Virginia Wetlands Report Vol. 11, No. 2, Virginia Institute Of Marine Science

Virginia Wetlands Reports

  • Northern Harrier, or Marsh Hawk. Julie G. Bradshaw
  • Bay Anchovy. Lyle Varnell
  • Geographic Information System (GIS) Data Exchange- The State of the Problem, Part 2. Marcia Berman
  • General Assembly Passes, and Governor Signs Wetlands Mitigation Banking Legislation.
  • Second Edition of the Virginia Wetlands Management Handbook Now Available.
  • Wetlands Management Symposium: Wetlands Compensation Survey Results
  • Westmoreland State Park. Pam Mason
  • Literally, what is littoral sand movement? William Roberts


Plant Adaptations To Saturated Soils And The Formation Of Hypertrophied Lenticels And Adventitious Roots In Woody Species, Kirk J. Havens, Virginia Institute Of Marine Science, Wetlands Program Feb 1996

Plant Adaptations To Saturated Soils And The Formation Of Hypertrophied Lenticels And Adventitious Roots In Woody Species, Kirk J. Havens, Virginia Institute Of Marine Science, Wetlands Program

Reports

No abstract provided.


The Virginia Wetlands Report Vol. 11, No. 1, Virginia Institute Of Marine Science Jan 1996

The Virginia Wetlands Report Vol. 11, No. 1, Virginia Institute Of Marine Science

Virginia Wetlands Reports

  • Black Skimmer. Julie G. Bradshaw
  • Alewife. Lyle Varnell
  • Geographic Information System (GIS) Data Exchange- The State of the Problem. Marcia Berman
  • Northern Neck Workshops Prove Profitable to Participants. Beth Peacock
  • Grazing and Haying Activities in Wetlands. Pamela Mason
  • Should I fertilize my tidal marsh? William Roberts


Radical Environmentalism And Religion, Evelyn Louise Bush Jan 1996

Radical Environmentalism And Religion, Evelyn Louise Bush

Dissertations, Theses, and Masters Projects

No abstract provided.


Virginia Game Fish Tagging Program Annual Report 1995, Cm Bain Iii, John A. Lucy Jan 1996

Virginia Game Fish Tagging Program Annual Report 1995, Cm Bain Iii, John A. Lucy

Reports

The Virginia Came Fish tagging Program (VGFTP) was established in 1995 as an ongoing, cooperative project of the Virginia Marine Resources Commission and the Virginia Institute of Marine Science of the College of William and Mary The project is funded with revenues generated by Virginia's marine recreational fishing license.


Status Of The Major Oyster Diseases In Virginia 1995 A Summary Of The Annual Monitoring Program, Lisa M. Ragone Calvo, Eugene M. Burreson Jan 1996

Status Of The Major Oyster Diseases In Virginia 1995 A Summary Of The Annual Monitoring Program, Lisa M. Ragone Calvo, Eugene M. Burreson

Reports

No abstract provided.


Effects Of The June 1995 Freshet On The Main Virginia Tributaries To The Chesapeake Bay, Herbert M. Austin, Christopher F. Bonzek Jan 1996

Effects Of The June 1995 Freshet On The Main Virginia Tributaries To The Chesapeake Bay, Herbert M. Austin, Christopher F. Bonzek

VIMS Articles

Environmental conditions in the Virginian waters of the Chesapeake Bay area during the summerof 1995 have been characterized as a severe drought. This drought was punctuated on 27 June with a headwater (James and Rappahannock River) rain storm that produced a "freshet". Although it did not rain in the Tidewater area of Virginia, surface salinities were depressed by the run-off, and main-stem bottom ox}'gen levels dropped to z.ero in the James and Rappahannock rivers. The effects of the reduced oxygen were apparent on the James River oyster stock, particularly the reduction in spatfall, and to a lesser degree on the …


Variational Inverse Methods For Transport Problems, Zhaoqing Yang Jan 1996

Variational Inverse Methods For Transport Problems, Zhaoqing Yang

Dissertations, Theses, and Masters Projects

Variational inverse data assimilation schemes are developed for three types of parameter identification problems in transport models: (1) the tracer inverse for the Lagrangian mean transport velocity in a long-term advection-diffusion transport model; (2) determination of inflow salinity open boundary condition in an intra-tidal salinity transport model; and (3) determination of settling velocity and resuspension rate for a cohesive sediment transport model. The gradient of the cost function with respect to the control variables is obtained by the adjoint model. A series of twin experiments are conducted to test the inverse models for the three types of problems. Results show …


Effects Of Sand-Mining On Benthic Communities And Resource Value : Thimble Shoal, Lower Chesapeake Bay, Linda C. Schaffner, Michele A. Horvath, Carl H. Hobbs Iii Jan 1996

Effects Of Sand-Mining On Benthic Communities And Resource Value : Thimble Shoal, Lower Chesapeake Bay, Linda C. Schaffner, Michele A. Horvath, Carl H. Hobbs Iii

Reports

In August 1990 the City of Hampton placed approximately 276,000 cubic yards of sand from a designated borrow site on Thimble Shoal onto Buck:roe Beach for beach restoration. The Buck:roe reserve identified by Kimball et al. (1989) contains large quantities of beach quality material and is located less then 2.5 km offshore of Buck:roe Beach. In early 1989 a small section (330 m by 240 m) located in 5 m of water was delineated and permitted for dredging. This project represents the first instance of permitted, sand-mining activities for beach nourishment in the lower bay. Although the impacts of the …


Preliminary Evaluation Of Water Quality In Tidal Creeks Of Virginia's Eastern Shore In Relation To Vegetable Cultivation, Mark W. Luckenbach, Morris H. Roberts Jr., Keith Boyd Jan 1996

Preliminary Evaluation Of Water Quality In Tidal Creeks Of Virginia's Eastern Shore In Relation To Vegetable Cultivation, Mark W. Luckenbach, Morris H. Roberts Jr., Keith Boyd

Reports

In response to concerns raised about the impacts of vegetable cultivation using plastic ground covers on water quality, we have initiated a broad-scale, systematic study of water quality in seaside tidal creeks of Virginia' s Eastern Shore. Our objective was to determine if acute toxicity associated with heavy metals or pesticides was more prevalent in tidal creeks with drainage areas which include this agricultural practice than in those which do not. Though such correlations do not confirm cause and effect, they may serve as the basis for future, more targeted investigations and for some immediate changes in land management practices …


Demersal Predator Exposure To Toxic Organic Contaminants: Direct Effects Of Macrofauna In Trophic Transfer, Patrick Winfield Lay Jan 1996

Demersal Predator Exposure To Toxic Organic Contaminants: Direct Effects Of Macrofauna In Trophic Transfer, Patrick Winfield Lay

Dissertations, Theses, and Masters Projects

The bioaccumulation and metabolism of organic contaminants (PAH, PCB) by three estuarine polychaetes, Nereis succinea (Frey and Leuckart 1847), Paraprionospio pinnata (Ehlers 1901) and Polydora ligni (Webster 1879), and by the fish predator, spot (Leiostomus xanthurus Lacepede 1802), were examined in laboratory experiments. Variations in trophic transfer of these contaminants resulting from differences in prey and contaminant type were also investigated. Toxicokinetic modeling reveals that metabolism of organic contaminants by invertebrate species result in variations in uptake, metabolism and elimination rate constants. Incorporation of prey metabolism potential in kinetic models increases the latter's predictability of biota-sediment accumulation factors (BSAFs), or …


Fate And Transport Processes For Polycyclic Aromatic Hydrocarbons In The Surface Microlayer Of Southern Chesapeake Bay, Kewen Liu Jan 1996

Fate And Transport Processes For Polycyclic Aromatic Hydrocarbons In The Surface Microlayer Of Southern Chesapeake Bay, Kewen Liu

Dissertations, Theses, and Masters Projects

Surface microlayer (SM) samples were collected with a rotating cylinder sampler from the York and Elizabeth River estuaries of southern Chesapeake Bay every other month from May 1994 through June 1995. Total suspended particle concentration (TSP) concentrations in the SM were found to be up to 1000 times higher than in the corresponding subsurface water, and to be exponentially associated with the wind speed at sampling. A relatively larger POC/TN ratio in the Elizabeth River SM compared with that in the York River SM was also observed. No seasonal trends were noticed in the SM characteristics; however, TSP, POC, and …


Gaseous Flux And Distribution Of Polycyclic Aromatic Hydrocarbons Across The Air-Water Interface Of Southern Chesapeake Bay, Kurt E. Gustafson Jan 1996

Gaseous Flux And Distribution Of Polycyclic Aromatic Hydrocarbons Across The Air-Water Interface Of Southern Chesapeake Bay, Kurt E. Gustafson

Dissertations, Theses, and Masters Projects

Gaseous fluxes of polycyclic aromatic hydrocarbons (PAHs) across the air-water interface of Southern Chesapeake Bay were calculated for the period January 1994 through May 1995 using a modified two-film model. Additionally, the distributions of PAHs between the vapor and aerosol phase in the atmosphere, and between the freely dissolved and suspended particulate phase in the water column were investigated. Net instantaneous gaseous fluxes of PAHs were determined to vary in direction and magnitude both spatially and temporally across the air-water interface of Southern Chesapeake Bay at four sites ranging from remote to urban and highly industrialized. The magnitude of gas …


Lipid Class Composition Of Oysters, Crassostrea Virginica, Exposed To Sediment-Associated Pahs, Tong Li Jan 1996

Lipid Class Composition Of Oysters, Crassostrea Virginica, Exposed To Sediment-Associated Pahs, Tong Li

Dissertations, Theses, and Masters Projects

No abstract provided.


Potential For Population Regulation Of The Zebra Mussel, Dreissena Polymorpha, In The Hudson River, Larry C. Boles Jan 1996

Potential For Population Regulation Of The Zebra Mussel, Dreissena Polymorpha, In The Hudson River, Larry C. Boles

Dissertations, Theses, and Masters Projects

No abstract provided.


Breeding Ecology, Success, And Population Management Of The Piping Plover (Charadrius Melodus) At Chincoteague National Wildlife Refuge, Virginia, Robert Richard Cross Jan 1996

Breeding Ecology, Success, And Population Management Of The Piping Plover (Charadrius Melodus) At Chincoteague National Wildlife Refuge, Virginia, Robert Richard Cross

Dissertations, Theses, and Masters Projects

No abstract provided.


Expression Of The Xenobiotic Transporter P-Glycoprotein In The Mummichog (Fundulus Heteroclitus), Peter S. Cooper Jan 1996

Expression Of The Xenobiotic Transporter P-Glycoprotein In The Mummichog (Fundulus Heteroclitus), Peter S. Cooper

Dissertations, Theses, and Masters Projects

The mammalian mdr1 P-glycoprotein (Pgp) has been implicated in xenobiotic resistance of drug-resistant cell lines and tumors, and may function in excretion or exclusion of toxic xenobiotics at several sites within the body. Pgp gene family members are expressed in excretory epithelia of several aquatic taxa and may contribute to the survival of pollution-tolerant aquatic animals in contaminated environments. For this reason the expression of Pgp family members was investigated in the livers and liver tumors of creosote-resistant mummichog (Fundulus heteroclitus) inhabiting a creosote-contaminated site (Atlantic Wood) in the Elizabeth River, Virginia. Expression of members of the Pgp gene family …


Relative Risk Assessment For Cape Hatteras National Seashore, John Cary Buie Jan 1996

Relative Risk Assessment For Cape Hatteras National Seashore, John Cary Buie

Dissertations, Theses, and Masters Projects

No abstract provided.


The Meteorological Effects Of The Kuwait Oil Fires, Patrick Kevin Dowling Jan 1996

The Meteorological Effects Of The Kuwait Oil Fires, Patrick Kevin Dowling

Dissertations, Theses, and Masters Projects

No abstract provided.


Analysis Of Temporal And Spatial Variations In Vegetation Communities For The Buxton Woods Region Of Cape Hatteras National Seashore, Marcia Berman, Gene Silberhorn, Carl Hershner Jan 1996

Analysis Of Temporal And Spatial Variations In Vegetation Communities For The Buxton Woods Region Of Cape Hatteras National Seashore, Marcia Berman, Gene Silberhorn, Carl Hershner

Reports

Residential development and growth along private lands bordering the southern portion of Cape Hatteras may be increasing at a rate inconsistent with the current water supply and demand. In the late 1960's and again in the late 1970's a series of wells were drilled to supply area residences and businesses with potable water from the local shallow water aquifer. Today, additional wells are being considered to serve the expanding community of Buxton Woods.

At the same time, the National Park Service maintains a series of ditches for both mosquito and flood control management. A large ditch which trends approximately northeast/southwest …


Patterns Of Phytoplankton Abundance And Nutrient Concentration In The York River Estuary, Virginia: 1984-1994, Yongsik Sin, Richard L. Wetzel Jan 1996

Patterns Of Phytoplankton Abundance And Nutrient Concentration In The York River Estuary, Virginia: 1984-1994, Yongsik Sin, Richard L. Wetzel

Reports

No abstract provided.