Physical Sciences and Mathematics Commons^™

Chemical And Toxicological Characterization Of The Upper York River, Virginia The Mattaponi And Pamunkey Rivers, Morris H. Roberts Jr., Mark Richards, Peter F. Delisle

Reports

This study describes the most extensive effort to characterize the chemistry, toxicology and community of the sediments of the Mattaponi and Pamunkey Rivers. This was accomplished using a study design modified to expand the number of stations occupied by reducing the cost of analyses by compositing replicate samples collected from each study site rather than performing toxicity tests on these samples individually. In previous studies, the variability in field replicate samples was equivalent to the variability in laboratory replicates. This design has long been used to analyze samples for various chemical contaminants as a cost savings endeavor. More ....

Algorithms For Computing The Distributions Of Sums Of Discrete Random Variables, D. L. Evans, Lawrence Leemis

Arts & Sciences Articles

We present algorithms for computing the probability density function of the sum of two independent discrete random variables, along with an implementation of the algorithm in a computer algebra system. Some examples illustrate the utility of this algorithm.

Evaluation Of Striped Bass Stocks In Virginia : Monitoring And Tagging Studies, 2004-2008 Annual Report 1 September 2003 - 31 August 2004, Philip W. Sadler, John M. Hoenig, Robert E. Harris, Bonnie G. Holliman

Reports

This report presents the results of striped bass (Marone saxatilis) tagging and monitoring activities in Virginia during the period 1 August 2003 through 31 August 2004. It includes an assessment of the biological characteristics of striped bass taken from the 2004 spring spawning run, estimates of annual survival based on annual spring tagging, and the results of the fall 2003 directed mortality study that is a collaborative effort with the Maryland Department ofNatural Resources. The information contained in this report is required by the Atlantic States Marine Fisheries Commission and is used to implement a coordinated management plan for striped …

The Value Of Created Dunes To Address Coastal Hazards In Chesapeake Bay: Hurricane Isabel Impacts, C. Scott Hardaway Jr., Donna A. Milligan, Travis R. Comer

Reports

Perhaps the most important function of a created dune, from some perspectives, is coastal protection. Since the initiation of this subtask within the overall Chesapeake Bay Dune Monitoring and Management Analysis project, Hurricane Isabel impacted the coastal plain of Virginia and significantly altered almost all Bay shorelines to one degree or another. This is particularly true of shorelines facing north, east, and south since the winds shifted as the storm passed. The original task scope has changed slightly as a result of Isabel’s passage since it was such a significant storm event and provided an opportunity to show how dunes …

Draft Woody Depression Wetland Hgm Model For The Coastal Plain Of Virginia, Kirk J. Havens, David O'Brien, David Stanhope, Kory Angstadt, Tamia Rudnicky, Daniel Schatt, Gene M. Silberhorn, Carl Hershner

Reports

No abstract provided.

The Virginia Wetlands Report Vol. 19, No. 3, Virginia Institute Of Marine Science

Virginia Wetlands Reports

• Banknesting Birds: Belted Kingfisher, Bank Swallow, and Northern Rough-winged Swallow; Or, Eroding Banks, They’re Not All Bad Julie Bradshaw
• Online Tools Now Available for Coastal Managers. Marcia Berman
• VIMS Upgrades Shoreline Advisory Reports. Karen Duhring

Analysis Of Chaos-Induced Pulse Trains In The Ionization Of Hydrogen, K. A. Mitchell, J. P. Handley, B. Tighe, A. Flower, John B. Delos

Arts & Sciences Articles

We examine excitation (by a short laser pulse) of a hydrogen atom in parallel electric and magnetic fields, from an initial tightly bound state to a state above the classical ionization threshold. We predict that the atom ionizes by emitting a train of electron pulses. This prediction is based on the classical dynamics of electron escape. In particular, the pulse train is due to classical chaos, which occurs for nonvanishing magnetic field. We connect the structure of the pulse train to fractal structure in the escape dynamics, and discuss several issues of experimental interest, with a particular emphasis on understanding …

Temporal Variability Of Delta C-14, Delta C-13, And C/N In Sinking Particulate Organic Matter At A Deep Time Series Station In The Northeast Pacific Ocean, J Hwang, Erm Druffel, S Griffin, Kl Smith, Rj Baldwin, Je Bauer

VIMS Articles

A 6-year time series of Delta(14) C, delta(13) C, and C/N measurements in deep sinking particulate organic matter ( POM) is presented for an abyssal site, Station M in the northeast Pacific Ocean. The Delta(14)C values revealed that sinking POM at 3450 m depth ( 650 m above bottom) contained old carbon despite its presumed short transit time in the water column. The isotopic and chemical properties of the sinking POM varied with time and appear to be controlled by more than one major process. In 1993, 1994, and late 1996, isotopic signatures and C/N molar ratios indicate negligible or …

The Crest, Fall 2004, Virginia Institute Of Marine Science

Reports

Table of Contents:

• NOAA Opens Chesapeake Bay Office in Virginia at VIMS
• Team discovers probable cause of croaker deaths
• Researchers test and refine storm-surge models
• Dye helps predict potential dispersal of non-native oyster larvae
• Researchers release juvenile blue crabs
• Annual wetlands workshop explores Isabel's impacts
• Fellows earn berth at EPA Conference
• Reay and Priest share Spirit award
• Schaffner briefs U.S. Congress
• VIMS student develops educational board game
• VIMS hosts release of Fisheries Ecosystem plan
• Researchers study ocean's "internal weather"
• VIMS mourns passing of Andrews
• News Briefs

Accomack County Dune Inventory, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, George R. Thomas, Walter L. Priest, Linda M. Meneghini, Thomas A. Barnard, Christine A. Wilcox

Reports

Accomack County is located on the Eastern Shore of Virginia (Figure 1). Only dune sites on Chesapeake Bay were analyzed. A total of 33 dune sites were identified along Accomack’s shoreline (Figure 2). It is the intent of this publication to provide the user with information on the status of dunes in Accomack County. This information comes from research performed in 1999 and 2000 which was presented in a report entitled “Chesapeake Bay Dune Systems: Evolution and Status (Hardaway et al., 2001). Although somewhat dated, the information provides a short historical perspective of the state of each site at the …

A Cheseapeake Bibliography, William J. Hargis Jr, Shirley O. Sterling

Reports

A partial listing of books, special publications, articles and scholarly papers relevant to the Chesapeake Bay drainage basin, the Chesapeake region, the Chesapeake Bay itself, and its tributaries which are useful in developing an understanding of their archaeological, biological, chemical, geographical, geological and physical features and of their pasts and histories (including human occupations and use before and since European settlement).

Estimating Relative Abundance Of Young Of Year American Eel, Anguilla Rostrata, In The Virginia Tributaries Of Chesapeake Bay. Final Report (2003 Reporting Year), Marcel M. Montane, Hank Brooks, Wendy A. Lowery, Aimee D. Halvorson

Reports

The Atlantic States Marine Fisheries Commission (ASMFC) adopted the Interstate Fishery Management Plan (hereafter referred to as FMP) for the American Eel in November 1999. The FMP focuses on increasing the state’s efforts to collect data on the resource and the fishery it supports through both fishery-dependent and fishery-independent studies. To this end, member jurisdictions (including Virginia) agreed to implement an annual abundance survey for young of year (YOY) American eels. The survey is intended to “…characterize trends in annual recruitment of the young of year eels over time [to produce a] qualitative appraisal of the annual recruitment of American …

The Virginia Wetlands Report Vol. 19, No. 2, Virginia Institute Of Marine Science

Virginia Wetlands Reports

• Dunlin (Calidris alpina) Julie Bradshaw
• Snakehead Invades Potomac River
• Celebrating a Wetland Wildflower: Seashore Mallow Karen Duhring
• Preserving The Bay’s Living Shorelines: A Growing Grass-roots Effort. Karen Duhring
• New & Interesting Web Sites

City Of Norfolk Dune Inventory, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, George R. Thomas, Walter L. Priest, Linda M. Meneghini, Thomas A. Barnard, Christine Wilcox

Reports

City of Norfolk, Virginia is located on the southern shore of Chesapeake Bay (Figure 1). Thirteen dune sites were identified along it’s Chesapeake Bay shore from Little Creek Inlet to Willoughby Spit (Figure 2). It is the intent of this publication to provide the user with information on the status of dunes in City of Norfolk. This information comes from research performed in 1999 and 2000 which was presented in a report entitled “Chesapeake Bay Dune Systems: Evolution and Status (Hardaway et al., 2001). Although somewhat dated, the information provides a short historical perspective of the state of each site …

Northampton County Dune Inventory, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, George R. Thomas, Walter L. Priest, Linda M. Meneghini, Thomas A. Barnard, Christine Wilcox

Reports

Northampton County is located on the Eastern Shore of Virginia (Figure 1). Only dune sites on Chesapeake Bay were analyzed. A total of 30 dune sites were identified along Northampton’s shoreline (Figure 2). It is the intent of this publication to provide the user with information on the status of dunes in Northampton County. This information comes from research performed in 1999 and 2000 which was presented in a report entitled “Chesapeake Bay Dune Systems: Evolution and Status (Hardaway et al., 2001). Although somewhat dated, the information provides a short historical perspective of the state of each site at the …

Letter To William A. Pruitt, Commissioner, Virginia Marine Resources Commission, Re: King William Reservoir-Mattaponia River Fisheries Impact Assessment And Mitigation Report, Roger L. Mann

Reports

No abstract provided.

Evaluating Recruitment Of American Eel, Anguilla Rostrata, To The Potomac River Spring 2004, Marcel M. Montane, Wendy A. Lowery, Hank Brooks, Aimee D. Halvorson

Reports

The Atlantic States Marine Fisheries Commission (ASMFC) adopted the Interstate Fishery Management Plan (FMP) for the American eel in November 1999. The FMP focuses on increasing the states’ efforts to collect data on the resource and the fishery it supports through both fishery dependent and fishery independent studies. To this end, member jurisdictions (including the PRFC) agreed to implement an annual abundance survey for young of year (YOY) American eels. The survey is intended to “…characterize trends in annual recruitment of young of year eels over time [to produce a] qualitative appraisal of the annual recruitment of American eel to …

Status Of The Major Oyster Diseases In Virginia 2003 A Summary Of The Annual Monitoring Program, Ryan Carnegie, Lisa M. Ragone Calvo, Eugene M. Burreson

Reports

Low temperatures and salinities brought abatement in the oyster diseases caused by Perkinsus marinus (Dermo) and Haplosporidium nelsoni (MSX) for the first time since 1998. In the James River, P. marinus prevalences were the lowest they had been since 1998. In summer and fall, when P. marinus is normally most prevalent, it was found in a maximum of 72% of oysters at Wreck Shoal and in less than half the oysters at Horsehead Rock and Point of Shoals. Advanced infections were very rare. Haplosporidium nelsoni had disappeared completely from quarterly James River samples by July

Lancaster County Dune Inventory, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, George R. Thomas, Walter L. Priest, Linda M. Meneghini, Thomas A. Barnard, Christine Wilcox

Reports

Lancaster County, Virginia is located at the confluence of the Rappahannock River and Chesapeake Bay (Figure 1). Most of the dunes are located along the Rappahannock River with the remainder along Chesapeake Bay. There are a total of 45 dune sites identified along the Lancaster County shoreline (Figure 2). It is the intent of this publication to provide the user with information on the status of dunes in Lancaster County. This information comes from research performed in 1999 and 2000 which was presented in a report entitled “Chesapeake Bay Dune Systems: Evolution and Status (Hardaway et al., 2001). Although somewhat …

Bacterial Utilization Of Transient Plankton-Derived Dissolved Organic Carbon And Nitrogen Inputs In Surface Ocean Waters, J Cherrier, Je Bauer

VIMS Articles

The majority of bacterial growth and respiration in the upper ocean is thought to result from coupling between microheterotrophic populations and the reactive soluble components of planktonic primary and secondary production. However, we know little about the potential turnover of these components and the concomitant growth of bacteria under conditions of intermittent or transient inputs of natural dissolved organic matter (DOM) compared to quasi-steady state, low DOM conditions. The present study evaluated the short-term (similar to3 d) rates and net extents of utilization (as measured losses) of selected constituents of plankton-derived DOM (DOMPD) by indigenous bacterioplankton populations in eastern North …

Monitoring Relative Abundance Of American Shad In Virginia’S Rivers 2003 Annual Report, John E. Olney

Reports

Concern about the decline in landings of American shad (Alosa sapidissima) along the Atlantic coast prompted the development of an interstate fisheries management plan (FMP) under the auspices of the Atlantic States Marine Fisheries Management Program (AS

High Rates Of Ammonium Recycling Drive Phytoplankton Productivity In The Offshore Mississippi River Plume, B Wawrik, Jh Paul, Da Bronk, Et Al

VIMS Articles

As part of an integrated study of the regulation of carbon fixation in the offshore Mississippi River plume, we measured the rates of N-15-labeled ammonium and nitrate uptake in the surface plume waters from offshore to nearshore along the plume axis towards the Mississippi Delta. Concentrations of nitrate in the plume ranged from 0.19 to 2.5 muM with the highest concentrations primarily in the shoreward stations, while ammonium ranged from 0.17 to 0.44 muM, showing little spatial variability. Rates of ammonium uptake ranged from 16.5 to 260 nM h(-1), and showed a strong trend of increasing values from offshore towards …

The Crest, Spring 2004, Virginia Institute Of Marine Science

Reports

Table of Contents:

• VIMS dedicates Kauffman Center
• Ocean report bolsters VIMS agenda
• Mann urges Congress to enact ballast water standard
• Graves receives faculty award
• Study supports UN Dead Zone report
• Marine trades will pay for training
• Researchers link beach erosion to ice-age channels
• Recovered tag provides data windfall
• Heritage tourism workshop draws local businesses
• Pair contribute to Science article on ocean fertilization
• VIMS launches data buoy
• Hale takes PBDE research to the air
• VIMS finds pathogen in non-native oyster
• Study reveals drop in SAV
• NOAA honors VIMS alumnus
• Musick celebrates 35th Roanoke round-up
• Assembly names Library for Hargis
• VIMS honors …

Tangier Island, Virginia Shoreline Management Plan For The West Coast Of The Uppards, C. Scott Hardaway Jr.

Reports

Utilizing geo-rectified aerial photography from 1938, 1960, 1987, and 2001, shoreline change rates were determined along the Uppards. Shoreline change rates vary but are all erosional except for areas around the north end where sand bars come and go. In the area of concern between baseline stations 4000 and 4600, the rates of erosion have increased with time. Using the rate calculated from the 1938 to 2001 shorelines for station 4000, 16 ft/yr, the 400 ft marsh isthmus width between the shoreline and Toms Gut would breach in about 25 years. This would essentially break the Uppards in two and …

The Virginia Wetlands Report Vol. 19, No. 1, Virginia Institute Of Marine Science

Virginia Wetlands Reports

• Alligators Abound! Alligator Farming in America Pam Mason
• Hooded Merganser (Lophodytes cucullatus) Julie Bradshaw
• Workshop for Coastal Managers Planned for May 19-20, 2004 Marcia Berman
• Annual Summary of Permitted Tidal Wetland Impacts – 2003. Karen Duhring
• Tidal Wetland Mitigation Banking Coming to Virginia Waters. Tom Barnard

Chaos-Induced Pulse Trains In The Ionization Of Hydrogen, K. A. Mitchell, J. P. Handley, B. Tighe, A. Flower, John B. Delos

Arts & Sciences Articles

We predict that a hydrogen atom in parallel electric and magnetic fields, excited by a short laser pulse to an energy above the classical saddle, ionizes via a train of electron pulses. These pulses are a consequence of classical chaos induced by the magnetic field. We connect the structure of this pulse train (e.g., pulse size and spacing) to fractal structure in the classical dynamics. This structure displays a weak self-similarity, which we call “epistrophic self-similarity.” We demonstrate how this self-similarity is reflected in the pulse train.

2004 Gloucester Point 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 Wicomico County- Gis Data, Marcia Berman, Harry Berquist, Sharon Killeen, Carl Hershner, Helen Rea, Tamia Rudnicky, Daniel Schatt, David Weiss, Helen Woods

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 …

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

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 …

2004 Hampton Roads Station Tide Prediction Calendars, Virginia Institute Of Marine Science, David A. Evans

Miscellaneous

These calendars are produced monthly using David Evans' Tidecal.