Physical Sciences and Mathematics Commons^™

Mathews County Shoreline Situation Report (2000), Marcia Berman, Harry Berquist, Sharon Dewing, J. B. Glover, Carl Hershner, Tamia Rudnicky, Dan Schatt, Kevin Skunda

Reports

No abstract provided.

Changes In Bacterioplankton Metabolic Capabilities Along A Salinity Gradient In The York River Estuary, Virginia, Usa, G. E. Schultz, H. W. Ducklow

VIMS Articles

Changes in metabolic capabilities of bacterial communities along the estuarine salinity gradient may affect the extent of organic matter processing and bacterial growth and accumulation during transit through the system; As part of a larger study of estuarine microbial processes, we attempted to quantify differences in bacterial community structure using Biolog plates. Biolog GN plates (Biolog, Inc., Hayward, CA, USA) were used to determine differences in bacterioplankton community metabolic potential. Biolog GN microplates are 96-well microtiter plates in which each well contains an individual carbon source as well the redox dye tetrazolium violet. As bacteria grow and oxidize each substrate, …

A Balanced Nitrogen Budget Of The Surface Layer Of The Southern Ross Sea, Antarctica, Walker O. Smith Jr.

VIMS Articles

To understand marine biogeochemical cycles, it is critical to quantitatively balance organic matter transformations within the euphotic zone. Such an assessment for nitrogen is difficult because of lateral advection, uncertainties in individual measurements, the complexity of elemental transformations (including nitrification and denitrification), and the difficulty of collecting data on appropriate space and time scales. Two cruises were conducted to the southern Ross Sea, Antarctica, to understand the time-varying fluxes of nitrogen into its various pools. From these data a balanced inventory was constructed. Nitrate removal in the upper 200 m was balanced by particulate and dissolved organic nitrogen production, ammonification, …

Virginia's Public Beach Board 20 Years Of Coastal Management, Donna A. Milligan, C. Scott Hardaway Jr.

Reports

No abstract provided.

Rapidan River Watershed Riparian Restoration Assessment, Friends Of The Rappahannock, Center For Coastal Resources Management, Virginia Institute Of Marine Science

Reports

A canoe based GPS survey was conducted of 111 miles of the Rapidan River and its major tributaries. The purpose of the survey was to collect the necessary baseline data to support the prioritization of stream reaches in the Rapidan River watershed for future streambank and/or riparian corridor restoration projects.

The data were post-processed and overlaid onto digital color orthophoto quarter quad images at a scale of 1: 12,000 (resolution = 2 meters). Areas with critical erosion and/or riparian restoration needs were prioritized based on the analyzed features.

Environmental Survey Of Potential Sand Resource Sites, Offshore Delaware And Maryland : Final Report, Virginia Institute Of Marine Science

Reports

• Technical summary / Carl H. Hobbs
• Non-technical summary / Carl H. Hobbs
• Part. 1. Benthic mapping and resource evaluation of potential sand mining areas, offshore Mayland and Delaware, 1998-1999 / G.R. Cutter and R.J. Diaz
• Part. 2. Transitory species (vertebrate nekton) / John A. Musick
• Part. 3. Literature survey of reproductive finfish and ichthyoplankton present in proposed sand mining locations within the Middle Atlantic Bight / John Olney, Donna Marie Bilkovic
• Part. 4. Potential modifications to waves due to dredging and other oceanographic considerations / Jerome P.-Y. Maa, Sung C. Kim
• Part. 5. Maryland-Delaware shoreline : long-term trends and short-term …

Monitoring Relative Abundance Of American Shad In Virginia's Rivers Annual Report 1999, John E. Olney Sr., John M. Hoenig

Reports

A moratorium on the taking of American shad (Alosa sapidissima) in the Chesapeake Bay and its tributaries was established by the Virginia Marine Resources Commission (VMRC) beginning 1 January 1994. The prohibition applied to both recreational and commercial fishers. The moratorium was imposed at a time when commercial catch rates of American shad in Virginia's rivers were experiencing declines. Data from the commercial fishery were the best available for assessing the status of individual stocks. Catch-per-unit-effort (CPUE) data were compiled from logbooks that recorded landings by commercial fishermen using staked gill nets at various locations throughout the middle reaches of …

Coastal Forested Wetland Walk, Virginia Institute Of Marine Science

Miscellaneous

Booklet describes resident trees, plants and animals along the walk on the VIMS campus.

The Virginia Wetlands Report Vol. 15, No. 2, Virginia Institute Of Marine Science

Virginia Wetlands Reports

• Grass Shrimp. Walter I. Priest, III
• Book Review Seashore Chronicles: Three Centuries of the Virginia Barrier Islands. Anne Newsom
• Grass Shrimp. Walter I. Priest, III
• A New Land Cover Data Set Now Available For Virginia’s Tributaries. Marcia Berman
• DEQ Implementing Nontidal Wetlands Protection Mandate. Ellen Gilinsky
• Sago Palm. Pam Mason

The Crest, Summer 2000, Virginia Institute Of Marine Science

Reports

Table of Contents:

• VIMS Scientists Successfully Spawn Cobia
• NMFS Faculty Position Established at VIMS
• Scientists Discover New Species of Perkinsus
• Researchers Discover New Pollutants Infiltrating Virginia Rivers
• Sea Scallop Research Resumed in June
• MARSH Project Will Help Save Tidal Wetlands
• Virginia's Changing Coastal Community - Indicators of Change
• New Pound-Net Design Spares Young Fish
• VIMS Scientist Studies Oysters in India
• American Shad Focus of Unique Study
• From the Coleman Bridge to Menai Bridge:
• VIMS Professor Leads Field-Course in Wales
• New Experimental Design Course for Teachers
• Students Teaching Students
• Horseshoe Crab Research is Timely
• Award Winning Bridge Website Receives Renewed Funding …

Wetland Seed Banks: Research In Natural And Created Wetlands, Douglas A. Deberry, James E. Perry, Virginia Institute Of Marine Science, Wetlands Program

Reports

No abstract provided.

Nonparametric Estimation Of The Cumulative Intensity Function For A Nonhomogeneous Poisson Process From Overlapping Realizations, Bradford L. Arkin, Lawrence Leemis

Arts & Sciences Articles

A nonparametric technique for estimating the cumulative intensity function of a nonhomogeneous Poisson process from one or more realizations on an interval is extended here to include realizations that overlap. This technique does not require any arbitrary parameters from the modeler, and the estimated cumulative intensity function can be used to generate a point process for simulation by inversion.

Computing The Cumulative Distribution Function Of The Kolmogorov–Smirnov Statistic, John H. Drew, Andrew G. Glen, Lawrence Leemis

Arts & Sciences Articles

We present an algorithm for computing the cumulative distribution function of the Kolmogorov–Smirnov test statistic Dn in the all-parameters-known case. Birnbaum (1952, J. Amer. Statist. Assoc. 47, 425–441), gives an n-fold integral for the CDF of the test statistic which yields a function defined in a piecewise fashion, where each piece is a polynomial of degree n. Unfortunately, it is difficult to determine the appropriate limits of integration for computing these polynomials. Our algorithm performs the required integrations in a manner that avoids calculating the same integrals repeatedly, resulting in shorter computation time. It can be used …

Gis Data: King And Queen Shoreline Situation Report, Marcia Berman, Harry Berquist, Tamia Rudnicky, J. B. Glover, Sharon Dewing, Daniel E. Schatt, Kevin Skunda

Data

The data inventory developed for the Shoreline Situation Reports are based on a three-tiered shoreline assessment approach. This assessment characterizes conditions in the shorezone observed from a small boat moving along the shoreline. Handheld GPS units record data observations in the field. 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

3. the shoreline, describing the presence of shoreline structures for shore protection and recreational purposes.

Three GIS coverages are generated from the collection technique. They can be downloaded at …

King And Queen County Shoreline Situation Report, Marcia Berman, Harry Berquist, Tamia Rudnicky, J. B. Glover, Sharon Dewing, Daniel E. Schatt, Kevin Skunda

Reports

The data inventory developed for the Shoreline Situation Reports are based on a three-tiered shoreline assessment approach. This assessment characterizes conditions in the shorezone observed from a small boat moving along the shoreline. Handheld GPS units record data observations in the field. 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

3. the shoreline, describing the presence of shoreline structures for shore protection and recreational purposes.

Three GIS coverages are generated from the collection technique. They can be downloaded at …

Strong Impacts Of Grazing Amphipods On The Organization Of A Benthic Community, Je Duffy, Me Hay

VIMS Articles

Large brown seaweeds dominate coastal hard substrata throughout many of the world's oceans. In coastal North Carolina, USA, this dominance by brown seaweeds is facilitated by omnivorous fishes, which feed both on red and green algae and on herbivorous amphipods that graze brown algae. When fish are removed in the field, brown seaweeds are replaced by red seaweeds, and herbivorous amphipods are more abundant. Using an array of large (similar to 4000 L) outdoor mesocosms, we tested three mechanistic hypotheses for this pattern: fish feeding facilitates brown algal dominance (1) by removing red and green algal competitors, (2) by removing …

Radiocarbon Distributions In Southern Ocean Dissolved And Particulate Organic Matter, Erm Druffel, Je Bauer

VIMS Articles

Dissolved organic carbon (DOC) is the largest actively exchanging pool of organic carbon in the ocean, yet its sources and sinks are not well constrained. The average C-14 ages of DOC in the deep N. Atlantic and N. Pacific Oceans are 4,000 [Bauer et al., 1992; Druffel et al., 1992] and 6,000 years [Williams and Druffel, 1987], respectively, and represent the beginning and end of the deep ocean conveyor [Broecker, 1991]. Here we report that the deep Southern Ocean DOC has a C-14 age (5,600 y) much closer to that of the deep N. Pacific, but its concentration in seawater …

Recurrence Spectroscopy In Time-Dependent Fields, M. R. Haggerty, John B. Delos

Arts & Sciences Articles

Closed-orbit theory is a semiclassical technique for explaining the spectra of Rydberg atoms in external fields. We derive an alternative version of closed-orbit theory that applies when the external fields are time dependent. We compare the results of this theory with experiments on lithium atoms in a weak oscillating electric field.

Increasing The Probability Of Success In The Construction Of Marshes In Coastal Virginia, Kirk J. Havens, Lyle M. Varnell

Reports

No abstract provided.

Jackson Creek Federal Navigation Project: Stove Point Placement Area Analysis Final Draft, Donna A. Milligan, C. Scott Hardaway Jr., George R . Thomas, Rebecca C.H. Brindley

Reports

The purpose of this study is to perform a shore assessment around Jackson Creek in order to determine what processes are affecting sedimentation in the creek mouth. In addition, the placement of sandy dredge material from Jackson Creek onto Stove Point also was to be determined. The Jackson Creek-Stove Point-Stingray Point evaluation includes an assessment of shore conditions and historic shore changes as well as a wave climate and sediment transport analysis. The product of this study is a recommendation as to the location of placement of dredge spoil for beach nourishment along the Stove Point Shoreline.

An Introduction To Wetland Seed Banks, Douglas A. Deberry, James E. Perry, Virginia Institute Of Marine Science, Wetlands Program

Reports

No abstract provided.

Economic Aspects Of Allocating Striped Bass Among Competing User Groups In Virginia, James Kirkley, Kenneth E. Mcconnell, Winnie Ryan

Reports

No abstract provided.

A Stable Isotopic Study To Determine Carbon And Nitrogen Cycling In A Disturbed Southern Californian Forest Ecosystem, S Korontzi, Sa Macko, Iris C. Anderson

VIMS Articles

This study utilized isotope analyses to contrast nitrogen and carbon dynamics at four sites located along an air pollution gradient in the San Bernardino National Forest in southern California. Natural N-15 and C-13 abundances along with nutritional and edaphic properties were determined in soil, litter, and vegetation samples. Mean bulk nitrogen delta(15)N values of soil and vegetation at Camp Paivika (CP), the most polluted site, were at least 1.7 parts per thousand more enriched than the other, less polluted sites. Mean soil delta(15)NH(4)(+) was also significantly enriched in N-15 at CP compared to Barton Flats (BF), the least polluted site, …

Status Of The Major Oyster Diseases In Virginia 1999 A Summary Of The Annual Monitoring Program, Lisa M. Ragone Calvo, Eugene M. Burreson

Reports

As a consequence of the relatively warm temperatures and high salinities severe epizootics of both H. nelsoni and P. marinus occurred in most tributaries in VA. In the upper James River, VA prevalences and intensities of P. marinus were the highest on record. The proportion of advanced infections (moderate and heavy intensity) in October was 60% at Wreck Shoal and 48% at Horsehead Rock suggesting that significant oyster mortalities occurred in these areas. 1 Record high levels of P. marinus were also observed in Virginia's other major tributaries. Of the 39 bay oyster populations surveyed in the fall, P. marinus …

Evaluation Of Striped Bass Stocks In Virginia, Monitoring And Tagging Studies, 1999-2003 Annual Report, 1 September 1998 - 31 October 1999, Philip Sadler, Robert E. Harris, Jason Romine, John E. Olney Sr.

Reports

No abstract provided.

Monitoring Relative Abundance Of American Shad In Virginia's Rivers Annual Report 1998, John E. Olney, John Hoenig

Reports

A moratorium on the taking of American shad in the Chesapeake Bay and its tributaries was established by the Virginia Marine Resources Commission (VMRC) beginning 1 January 1994. The prohibition applied to both recreational and commercial fishers. The moratorium was imposed at a time when commercial catch rates of American shad in Virginia's rivers were experiencing declines. Data from the commercial fishery were the best available for assessing the status of individual stocks. Catch-per-unit-effort (CPUE) data were compiled from logbooks that recorded landings by commercial fishermen using staked gill nets at various locations throughout the middle reaches of the three …

The Virginia Wetlands Report Vol. 15, No. 1, Virginia Institute Of Marine Science

Virginia Wetlands Reports

• A Crawfish by any Other Name Would Taste as Sweet. Pam Mason
• Salt Marsh Snails. Walter I. Priest, III
• Book Review For the Health of the Land: Previous Unpublished Essays and Other Writings. Anne Newsom
• Computing Isolated Wetlands in the Commonwealth. Marcia Berman and Tamia Rudnicky
• Virginia Debates Nontidal Wetlands Regulation. Carl Hershner

2000 Hampton Roads Station Tide Prediction Calendars, Virginia Institute Of Marine Science, David A. Evans

Miscellaneous

These calendars are produced monthly using David Evans' Tidecal.

2000 Gloucester Point Station Tide Prediction Calendars, Virginia Institute Of Marine Science, David A. Evans

Miscellaneous

These calendars are produced monthly using David Evans' Tidecal.

2000 Wachapreague Station Tide Prediction Calendars, Virginia Institute Of Marine Science, David A. Evans

Miscellaneous

These calendars are produced monthly using David Evans' Tidecal.