Life Sciences Commons^™

The Chesapeake Bay : A Synopsis, William J. Hargis Jr.

Reports

No abstract provided.

Predators In Action : Rapa Whelks Vs. Hard Clams, Juliana M. Harding, Vicki P. Clark, Roger L. Mann

Reports

This booklet gives information and data-based exercises describing ecological and economic connections between introduced rapa whelk Rapana venosa predators and local hard clams Mercenaria mercenaria in the lower Chesapeake Bay. The information is focused to answer the question: "How many hard clams could a rapa whelk eat in one year?

Shellfish Stalkers: Threats To An Oyster, Juliana M. Harding, Roger L. Mann, Vicki P. Clark

Reports

Describes some of the sources of mortality for Chesapeake Bay oysters. Common oyster predators, diseases, and habitat requirements are described with specific attention given to Virginia estuaries.

Shellfish Stalkers: Threats To An Oyster - Activity Booklet For Educators, Juliana M. Harding, Vicki P. Clark, Roger L. Mann

Reports

This booklet provides hands-on classroom activities that can be used to reinforce concepts presented in Shellfish Stalkers: Threats to an Oyster. The activities encourage problem solving and critical thinking skills.

Boat Scarring Effects On Submerged Aquatic Vegetation In Virginia (Year 1), R J. Orth, James R. Fishman, Amy Tillman, Sara Everett, Kenneth A. Moore

Reports

Submerged Aquatic Vegetation (SAV) in Chesapeake Bay has received significant attention in recent decades due to increasing understanding of the importance of these habitats for ecological functions, including fisheries habitat. Yet, SAV in many regions of the bay are at some of the lowest levels of abundance in recorded history. This has led state management agencies to adopt numerous policies and regulations to protect and restore these valuable communities. The Chesapeake Bay 2000 Agreement highlights SAV by recommitting to the goal of protecting and restoring 114,000 acres, revising existing restoration goals and strategies by 2002, and implementing a strategy to …

Oyster Reef Habitat Restoration : A Synopsis And Synthesis Of Approaches; Proceedings From The Symposium, Williamsburg, Virginia, April 1995, Mark Luckenbach, Roger L. Mann, James A. Wesson

Reports

This volume has its origin in a symposium held in Williamsburg, VA in April 1995, though most of the chapters have been significantly revised in the interim. The primary purpose of the symposium was to bring together state fisheries managers involved in fisheries-directed oyster enhancement and research scientists to refine approaches for enhancing oyster populations and to better develop the rationale for restoring reef habitats. We could hardly have anticipated the degree to which this been successful. In the interim between the symposium and the publication of this volume the notion that oyster reefs are valuable habitats, both for oysters …

Exchanges Of Carbon And Nitrogen Between Tidal Freshwater Wetlands And Adjacent Tributaries : A Final Report, Iris C. Anderson, Scott C. Neubauer, Betty B. Neikirk, Richard L. Wetzel

Reports

Tidal freshwater marshes are hypothesized to export materials and energy that support primary and secondary production in estuaries, yet there are few data available to test this hypothesis. A major objective of our study was to measure net exchange of carbon between marsh and atmosphere to determine whether biogenic carbon inputs are in excess of those required to produce observed biomass, satisfy the measured accretion rate, and keep pace with the historical rate of sea level rise. To determine whether the marsh exports materials and energy we measured exchanges of nutrients between marsh sediments and overlying water and of nutrients, …

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

Reports

No abstract provided.

Tidal Freshwater Ecosystems: Bibliography, Daniel J. Yozzo, David E. Smith, Marilyn L. Lewis

Reports

Tidal freshwater ecosystems represent an important transition zone between saline reaches of estuaries and non-tidal riverine environments. Tidal freshwater systems are distributed worldwide, but have been intensively studied in only a few geographic regions, such as the U.S. east coast and western Europe. Typically, tidal freshwater systems are characterized by high physical stress due to sediment instability and tidal action, which results in low species diversity. However, a number of anadromous and resident fish species utilize tidal freshwater reaches of estuaries as a spawning and nursery area, including economically significant species such as striped bass, American shad, and Atlantic sturgeon. …

Distribution Of Aeschynomene Virginica And Bacopa Innominata Along The Proposed Alternative Routes For The Sr629 Mattaponi River Crossing Upgrade Project, James E. Perry

Reports

Four wetland macrophytes of interest are found in the region of the proposed upgrade of the State Route 629 bridge crossing of the Mattaponi River. Two of these are State listed endangered or threatened species: the sensitive joint vetch (Aeschynomene virginica) and the mat-forming water-hyssop (Bacopa innominata). Two species, Long's bittercress (Cardamine longii) and Parker's pip~wort (Eriocaulon parkeri) are included on the Virginia watch list (Ludwig, 1992).

The purpose of this study was to locate and describe plant populations of the specified species (i.e. determine the size, spatial distribution, and density of extant populations) within a specified range of each …

City Of Chesapeake Tidal Marsh Inventory, Gene M. Silberhorn, Sharon Dewing, Virginia Institute Of Marine Science, Wetlands Program

Reports

No abstract provided.

City Of Suffolk Tidal Marsh Inventory, Kenneth A. Moore, Sharon Dewing, Virginia Institute Of Marine Science, Wetlands Program

Reports

No abstract provided.

Henrico County, Chesterfield County, Colonial Heights, Petersburg, And The City Of Richmond Tidal Marsh Inventory, Kenneth A. Moore, Sharon Dewing, Virginia Institute Of Marine Science, Wetlands Program

Reports

No abstract provided.

Charles City County Tidal Marsh Inventory, Kenneth A. Moore, Sharon Dewing, Gene M. Silberhorn

Reports

No abstract provided.

Richmond County Marsh Inventory, Walter I. Priest Iii, Sharon Dewing, Gene M. Silberhorn

Reports

No abstract provided.

Eutrophication Of Lake Matoaka Assessment And Projection, Bruce Neilson, Gary F. Anderson, Martha Rhodes

Reports

No abstract provided.

Cataract Occurrence In Micropogonia Furnieri (Desmarest, 1822) In The Area Between Capes Frio And Torres (23° S And 29° S), Brazil : Investigation Of Causes And Electrophoretic Studies Of Total Proteins Of The Eye Lenses, Anna Emila A. De M. Vazzoler, Van Ngan Phan

Reports

The frequency and distribution of these specimens were analysed and the electrophoretic patterns of soluble eye-lens proteins were determined. This cataract is not of parasitic origin and was rare in specimens from the coastal area. In the lagunar region it occurs mainly in specimens of the River Baguacu from April to November.

City Of Virginia Beach Marsh Inventory: Volume 3 Back Bay And Tributaries, Walter L. Priest Iii, Gene M. Silberhorn, Sharon Dewing

Reports

No abstract provided.

City Of Portsmouth Tidal Marsh Inventory, Gene M. Silberhorn, Sharon Dewing

Reports

No abstract provided.

Prince George County And City Of Hopewell, Gene M. Silberhorn, Sharon Dewing

Reports

No abstract provided.

King And Queen County Tidal Marsh Inventory, Walter L. Priest Iii, Gene M. Silberhorn, Andrew W. Zacherle

Reports

No abstract provided.

King William County And Town Of West Point Tidal Marsh Inventory, Gene M. Silberhorn, Andrew W. Zacherle

Reports

No abstract provided.

City Of Norfolk Tidal Marsh Inventory, Gene M. Silberhorn, Walter L. Priest Iii

Reports

No abstract provided.

The York River: A Brief Review Of Its Physical, Chemical And Biological Characteristics, Michael E. Bender

Reports

The purpose of this paper is to provide an overview of the physical, chemical and biological characteristics of the York River, Virginia. The river is formed by the confluence of the Mattaponi and Pamunkey rivers at West Point, Virginia. It is tidal over its entire length and flows to the western shore of Chesapeake Bay.

Baltimore Harbor And Channels Aquatic Benthos Investigations : Final Technical Report, Robert J. Diaz, Linda C. Schaffner, Robert J. Byrne, Robert A. Gammisch

Reports

This report describes work performed by the Virginia Institute of Marine Science, School of Marine Science of the College of William and Mary, Gloucester Point, VA, to document the existing preoperational conditions at four locations in the Chesapeake Bay selected as possible dredged material disposal areas for the deepening of the Baltimore Channel. The work was sponsored by the Baltimore District Corps of Engineers.

The objectives of this work were at each of the four potential disposal sites:

1 -document the surface (0-15 em) sediment conditions spatially and temporally

2 - document macrobenthic communities spatially and temporally.

3 - empty …

Present And Historical Environmental Survey Of The Poquoson River, York County, Virginia And The Warwick River; Newport News, Virginia : With Special Reference To Biotic Communities And The Effects Of Alum Discharge, Robert J. Diaz, Morris H. Roberts Jr., Gene M. Silberhorn, Gary F. Anderson

Reports

The objectives of this study were:

1. to determine the areal extent of discharged materials within each of the rivers using the aluminum:silicon ratio as an indicator;

2. to evaluate the benthic invertebrate communities within each of the rivers;

3. to determine whether there are differences in the productivity of the benthic algal and planktonic communities which can be attributed to the discharge of alum sludge in each river;

4. to evaluate the condition of the marsh communities in each river near the filtration plant;

5. to review historical biological data for the Poquoson and Warwick Rivers and to relate …

York River Slack Water Data Report : Temperature, Salinity, Dissolved Oxygen, 1971 - 1980, T. J. Brooks

Reports

The slack water survey program, provides an extended series of temperature, salinity, dissolved oxygen and nutrient measurements along the York River. These have been used to:

1) calibrate, verify, and update mathematical models; 2) provide a baseline against which effects of unusual events have been measured; and could be used to: 3) establish annual and longer period "climatological" trends in response to changing natural phenomena and man-made modifications to the estuary; 4) provide a basis against which fluctuations in biota could be compared.

This report contains station locations, survey schedules, field procedures, sample handling procedures, and data reduction and storage …

Middlesex County Tidal Marsh Inventory, Walter L. Priest Iii, Gene M. Silberhorn

Reports

No abstract provided.

Surry County Tidal Marsh Inventory, Kenneth A. Moore, Gene M. Silberhorn

Reports

No abstract provided.

Isle Of Wight Tidal Marsh Inventory, Gene M. Silberhorn, Arthur F. Harris Jr.

Reports

No abstract provided.