Physical Sciences and Mathematics Commons^™

Virginia Wetlands Report Vol. 21, No. 1, Virginia Institute Of Marine Science, Center For Coastal Resources Management

Virginia Wetlands Reports

Integrated Coastal & Shoreline Management Guidance

Motion Of An Electron From A Point Source In Parallel Electric And Magnetic Fields, Christian Bracher, John B. Delos

Arts & Sciences Articles

Negative ions undergoing near-threshold photodetachment in a weak laser field provide an almost pointlike, isotropic source of low-energy electrons. External fields exert forces on the emitted coherent electron wave and direct its motion. Here, we examine the spatial distribution of photodetached electrons in uniform, parallel electric and magnetic fields. The interplay of the electric and magnetic forces leads to a surprising intricate shape of the refracted electron wave, and mutiple interfering trajectories generate complex fringe patterns in the matter wave. The exact quantum solution is best understood in terms of the classical electron motion.

Integration Of Ecological And Socioeconomic Indicators For Estuaries And Watersheds Of The Atlantic Slope, Atlantic Slope Consortium

Reports

No abstract provided.

Annotated Bibliography Of Research Conducted In The Chesapeake Bay National Estuarine Research Reserve, Va, Frank M. Parker, William G. Reay

Reports

This annotated bibliography of research conducted within the Reserves boundaries is a living document and updated periodically as new and past publications become available to the Reserve. It is designed to identify and provide an abstract/summary of research publications conducted within the four component sites of the Chesapeake Bay National Estuarine Research Reserve - Virginia system. Selected reference material is also available for Reserve relevant work conducted at multiple sites within the York River system.

In order to help facilitate searches, the bibliography is categorized by Reserve components (Goodwin Islands, Catlett Islands, Taskinas Creek, and Sweet Hall Marsh) and by …

2006 Chesapeake Bay Bridge Tunnel Station Tide Prediction Calendars, Virginia Institute Of Marine Science, David A. Evans

Miscellaneous

These calendars are produced monthly using David Evans' Tidecal.

2006 Hampton Roads Station Tide Prediction Calendars, Virginia Institute Of Marine Science, David A. Evans

Miscellaneous

These calendars are produced monthly using David Evans' Tidecal.

2006 Gloucester Point Station Tide Prediction Calendars, Virginia Institute Of Marine Science, David A. Evans

Miscellaneous

These calendars are produced monthly using David Evans' Tidecal.

Partners In Natural Resource Management : The Virginia Institute Of Marine Science And The Commonwealth Of Virginia, Virginia Institute Of Marine Science

Miscellaneous

Produced by the Office of Research and Advisory Services, this publication describes the Institute's duties as outlined in the Code of Virginia (2006) and the advisory services and natural resources management roles in the Commonwealth of Virginia.

2006 Wachapreague Station Tide Prediction Calendars, Virginia Institute Of Marine Science, David A. Evans

Miscellaneous

These calendars are produced monthly using David Evans' Tidecal.

Development Of The Maryland Shoreline Inventory Methods And Guidelines For Calvert County - Gis Data, Marcia Berman, Harry Berquist, Sharon Killeen, Karen Reay, Karinna Nunez, Tamia Rudnicky, Daniel E. Schatt, David Weiss

Data

The Center for Coastal Resources Management (CCRM) at the Virginia Institute of Marine Science (VIMS) has generated Shoreline Situation Reports (SSRs) for coastal localities in the state of Maryland. This effort compliments a parallel effort in Virginia by the same group. SSRs were developed by VIMS in the 1970s for Virginia and have been the foundation for shoreline management planning in Tidewater Virginia ever since. CCRM has developed new protocols for collecting, disseminating, and reporting data relevant to shoreline management issues using state of the art mapping and remote sensing techniques. New SSRs are being generated on a county by …

Temporal And Vertical Dynamics In Picoplankton Photoheterotrophic Production In The Subtropical North Pacific Ocean, M. J. Church, H. W. Ducklow, Et Al

VIMS Articles

Heterotrophic microbial production is a fundamental determinant in the flow of bioelements and energy within the pelagic ecosystems of the open ocean. To characterize the temporal dynamics in rates of heterotrophic picoplankton production (HPP), we examined vertical profiles of H-3-leucine (H-3-leu) and [methyl-H-3]-thymidine (H-3-TdR) incorporation at Stn ALOHA (22 degrees 45'N, 158 degrees W) in the oligotrophic North Pacific Ocean. Euphotic zone rates of H-3-leu and H-3-TdR incorporation were measured in situ under light and dark conditions on cruises to Stn ALOHA between April 2000 and August 2005. Rates of H-3-leu and H-3-TdR incorporation were elevated in the well-lit upper …

2,2′,3,3′-Tetra­Methyl-6,6′-Biquinoxaline, Ralph N. Salvatore, Jorden P. Kass, Ricky J. Paul Gibson, Cesar H. Zambrano, Robert D. Pike, Eric E. Dueno

Arts & Sciences Articles

The molecule of the title compound, C20H18N4, has twofold rotational symmetry. Each aromatic ring of the fused quinoxaline ring system is skewed from the other by 4.93 (7)°. The two quinoxaline units make a dihedral angle of 43.52 (2)°

Gis Data: Caroline County, Virginia Shoreline Situation Report, Marcia Berman, Harry Berquist, Carl Hershner, Sharon Killeen, Karinna Nunez, Karen Reay, Tamia Rudnicky, David Weiss

Data

The data inventory developed for the Shoreline Situation Reports is based on a three-tiered shoreline assessment approach. In most cases this assessment characterizes conditions that can be observed from a small boat navigating along the shoreline. Hand-held GPS units are used to log features observed. The three tiered shoreline assessment approach divides the shorezone into three regions: 1) the immediate riparian zone, evaluated for land use; 2) the bank, evaluated for height, stability, cover and natural protection; and 3) the shoreline, describing the presence of shoreline structures for shore protection and recreational purposes. Three GIS coverages are generated. The car_lubc …

Bioreactivity Of Estuarine Dissolved Organic Matter: A Combined Geochemical And Microbiological Approach, Sl Mccallister, Je Bauer, Elizabeth A. Canuel

VIMS Articles

An integrated multidisciplinary study utilizing geochemical and microbial ecological approaches was conducted to characterize the origins, chemical nature, and quantities of dissolved and particulate organic matter (OM) utilized by heterotrophic bacteria in a temperate estuary. C: N, stable isotope (delta C-13), and lipid biomarker analyses revealed differences in the inferred reactivity of autochthonous versus allochthonous OM sources. Isotopic comparison of OM size fractions and bacterial nucleic acids suggests that high-molecular-weight dissolved OM (DOM) is consistently linked to bacterial biomass synthesis along the estuarine salinity gradient. Polyunsaturated fatty acids (as percent of total fatty acids, FA) were a reliable predictor of …

Liver Carcinogenesis In A Non-Migratory Fish: The Association With Polycyclic Aromatic Hydrocarbon Exposure, Wolfgang K. Vogelbein, M. A. Unger

VIMS Articles

Field and laboratory studies indicate a strong positive association between exposure to chemical pollutants in aquatic environments and development of neoplasia in fishes. This brief communication reviews some of the more important North American and European studies that have been conducted on this relationship. We then review work conducted on a small nonmigratory estuarine cyprinodontid teleost fish, the mummichog (Fundulus heteroclitus) in the industrialized Elizabeth River, Virginia USA. Histopathological surveys of mummichogs from variously degraded habitats indicate an association between PAH exposure and development of neoplasia. We have observed non-neoplastic lesions, preneoplasms and hepatic, biliary, exocrine pancreatic and vascular neoplasms …

Stafford County, Virginia Shoreline Situation Report Methods And Guidelines (2006), Marcia Berman, Harry Berquist, Sharon Dewing, Carl Hershner, Karinna Nunez, Karen Reay, Tamia Rudnicky, David Weiss

Reports

No abstract provided.

Living Shorelines, Center For Coastal Resources Management, Virginia Institute Of Marine Science

Reports

Rivers & Coast is a periodic publication of the Center for Coastal Resources Management, Virginia Institute of Marine Science. The goal of Rivers & Coast is to keep readers well informed of current scientific understanding behind key environmental issues related to watershed rivers and coastal ecosystems of the Chesapeake Bay.

The Crest, Winter 2006, Virginia Institute Of Marine Science

Reports

Table of Contents:

• Governor proposes $2.9 M for VIMS Construction begins on new buildings
• VIMS collaborates to restore Lynnhaven
• A tale of two breakwaters
• Seagrass die-back troubles researchers VIMS' role in tidal-wetlands permitting
• VIMS' ghostbusters study effects of lost fishing gear
• Virginia Clean Marina program tops 60 members
• VIMS premieres new ocean observatories course
• VIMS student marches with the penguins
• Fabrizio team wins NOAA Bronze Medal Award
• VIMS students win awards
• AFS recognizes Hoffman
• Former Professor Frank Fang dies
• VIMS sees the light
• CBNERR dedicates new lab

Development Of The Maryland Shoreline Inventory Methods And Guidelines For Calvert County, Marcia Berman, Harry Berquist, Sharon Killeen, Karen Reay, Karinna Nunez, Tamia Rudnicky, Daniel E. Schatt, David Weiss

Reports

No abstract provided.

The Effects Of Climate Change On The Population Ecology Of The Atlantic Surf Clam, Spisula Solidissima, In The Middle Atlantic Bight, Adriana Picariello

Dissertations, Theses, and Masters Projects

No abstract provided.

Thermal Desorption Of Hydrogen From Carbon Nanosheets, X. Zhao, R. A. Outlaw, J. J. Wang, M. Y. Zhu, Gregory D. Smith, B. C. Holloway

Arts & Sciences Articles

Carbon nanosheets are a unique nanostructure that, at their thinnest configuration, approach a single freestanding graphene sheet. Temperature desorption spectroscopy (TDS) has shown that the hydrogen adsorption and incorporation during growth of the nanosheets by radio frequency plasma-enhanced chemical vapor deposition are significant. A numerical peak fitting to the desorption spectra (300–1273K) via the Polanyi-Wigner equation showed that desorption followed a second order process, presumably by the Langmuir-Hinshelwood mechanism. Six peaks provide the best fit to the TDS spectra. Surface desorption activation energies were determined to be 0.59, 0.63, and 0.65eV for the external graphite surface layers and 0.85, 1.15, …

Bis([Mu]-Thio­Phene-2-Carbaldehyde Thio­Semicarbazonato)Bis­[Acetonitrile­Copper(I)] Bis­(Tetra­Fluoro­Borate), Robert D. Pike, Austin B. Wiles, Tristan A. Tronic

Arts & Sciences Articles

The title compound, [Cu2(C6H7N3S2)2(C2H3N)2](BF4)2, is a dimer with a central Cu2S2 core resulting from thio­semi­carbazone sulfur bridging. Both Cu-TCT units (TCT is the thio­phene-2-carboxaldehyde thio­semicarbazone anion) are roughly planar and are parallel to one another and perpendicular to the Cu2S2 plane.

Development Of The Maryland Shoreline Inventory Methods And Guidelines For Harford County, Marcia Berman, Harry Berquist, Sharon Killeen, Karinna Nunez, Karen Reay, Tamia Rudnicky, Daniel E. Schatt, David Weiss

Reports

No abstract provided.

Development Of The Maryland Shoreline Inventory Methods And Guidelines For Somerset County, Marcia Berman, Harry Berquist, Sharon Dewing, Carl Hershner, Helen Rea, Tamia Rudnicky, Daniel E. Schatt, David Weiss, Helen Wood

Reports

No abstract provided.

Development Of The Maryland Shoreline Inventory Methods And Guidelines For Queen Anne’S County, Marcia Berman, Harry Berquist, Sharon Killeen, Karinna Nunez, Karen Reay, Tamia Rudnicky, Daniel E. Schatt, David Weiss

Reports

No abstract provided.

Development Of The Maryland Shoreline Inventory Methods And Guidelines For Anne Arundel County, Marcia Berman, Harry Berquist, Sharon Killeen, Karinna Nunez, Karen Reay, Tamia Rudnicky, Daniel E. Schatt, David Weiss

Reports

No abstract provided.

Development Of The Maryland Shoreline Inventory Methods And Guidelines For Cecil County, Marcia Berman, Harry Berquist, Sharon Killeen, Karinna Nunez, Karen Reay, Tamia Rudnicky, Daniel E. Schatt, David Weiss

Reports

No abstract provided.

Development Of Generalized Index-Removal Models, With Particular Attention To Catchability Issues, Thomas F. Ihde

Dissertations, Theses, and Masters Projects

The index-removal method estimates abundance, exploitation and catchability coefficient, given surveys conducted before and after a known removal. The method assumes a closed population between surveys. Index-removal has seldom been applied due to its strong assumption of constant survey catchabilities. This work generalizes the method to allow multiple years of data to be incorporated, and the assumptions of the original model to be relaxed. If catchability is constant across years, precision can be improved by analyzing multi-year data simultaneously. Two multiple-year models were developed: the first, 1qIR, assumes constant catchability within and among years; the second, 2qIR, allows catchability to …

Diel And Site-Specific Feeding Of Young Striped Bass In A Heterogeneous Nursery Habitat, Sarah C. Muffelman

Dissertations, Theses, and Masters Projects

The Chesapeake Bay spawning stock of striped bass, Morone saxatilis, is considered one of the largest sources of juvenile production along the Atlantic coast and exhibits a high degree of interannual recruitment variability. Year class strength is judged by near-shore seine surveys that cover major tributaries of Chesapeake Bay and survey results are incorporated into annual stock assessments. In these surveys, the contribution of the Rappahannock River (Virginia) to total production is significant. In this system, abundance of juveniles is highest at a single seine site, suggesting that juvenile production may be related to habitat heterogeneity and food availability. To …

Incorporating Space Into Stock Assessments Of Marine Species, John F. Walter

Dissertations, Theses, and Masters Projects

Spatial management of marine resources requires population dynamic parameters in much greater spatial detail than traditional stock assessments provide. This dissertation presents a suite of methods to improve the spatial prediction of population abundance, fishing and natural mortality and to make greater use of commercial catch data. The main objectives of this dissertation are to determine the efficacy of using the vast amount of data collected by on-board observers on commercial vessels in model-based estimation of abundance and to use the spatial autocorrelation to improve resource mapping and abundance estimation. The first paper presents a methodology for improving variogram estimation …