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Articles 1 - 30 of 44
Full-Text Articles in Life Sciences
Ecosystem Process Modeling Of Submerged Aquatic Vegetation In The Lower Chesapeake Bay, R. L. Wetzel, M. B. Meyers
Ecosystem Process Modeling Of Submerged Aquatic Vegetation In The Lower Chesapeake Bay, R. L. Wetzel, M. B. Meyers
Reports
No abstract provided.
Distribution Of Submerged Aquatic Vegetation In The Chesapeake Bay And Tributaries And Chincoteague Bay - 1993, Robert J. Orth, Judith F. Nowak, Gary F. Anderson, Jennifer R. Whiting
Distribution Of Submerged Aquatic Vegetation In The Chesapeake Bay And Tributaries And Chincoteague Bay - 1993, Robert J. Orth, Judith F. Nowak, Gary F. Anderson, Jennifer R. Whiting
Reports
No abstract provided.
The Formation Of Hypertrophied Lenticels, Adventitious Water Roots, And An Oxidized Rhizosphere By Acer Rubrum Seedlings Over Time Along A Hydrologic Gradient, Kirk J. Havens
Reports
No abstract provided.
Comments On Proposed Modifications Of The Fisheries Management Plan For Sharks Of The Atlantic Ocean, J. A. Musick
Comments On Proposed Modifications Of The Fisheries Management Plan For Sharks Of The Atlantic Ocean, J. A. Musick
Reports
No abstract provided.
Fishery Independent Standing Stock Surveys Of Oyster Populations In The Virginia Sub Estuaries Of The Chesapeake Bay And A Comparison With Continuing Estimates Obtained From Fishery Dependent Data, Roger L. Mann, James Wesson
Fishery Independent Standing Stock Surveys Of Oyster Populations In The Virginia Sub Estuaries Of The Chesapeake Bay And A Comparison With Continuing Estimates Obtained From Fishery Dependent Data, Roger L. Mann, James Wesson
Reports
Extensive description of the Virginia oyster resource and history of its utilization has been given by Haven, Hargis and Kendall (1981), and more recently reviewed by Hargis and Haven (1988). These contributions, among many others, describe a state of continuing decline. To facilitate resource management a fishery independent survey was proposed to and subsequently supported by the Chesapeake Bay Stock Assessment Committee in 1993. This report covers activity on that program for the period October of 1993 through September of 1994.
Spatial variability in distribution of oysters within an oyster reef system, and distribution of reefs in the intertidal and/or …
Button Bush Cephalanthus Occidentalis L., Gene Silberhorn
Button Bush Cephalanthus Occidentalis L., Gene Silberhorn
Reports
The Wetland Flora Technical Report series provides concise information regarding the identification, growth habits, distribution, habitat, ecology and wetland indicator status for the title species. Illustrations are also included to aid in specimen identification.
Vims/W&M Blue Crab Fishery Statement, Rom Lipcius, Jacques Van Montfrans
Vims/W&M Blue Crab Fishery Statement, Rom Lipcius, Jacques Van Montfrans
Reports
No abstract provided.
A Pc-Based Tidal Prism Water Quality Model For Small Coastal Basins And Tidal Creeks, Albert Y. Kuo, Kyeong Park
A Pc-Based Tidal Prism Water Quality Model For Small Coastal Basins And Tidal Creeks, Albert Y. Kuo, Kyeong Park
Reports
No abstract provided.
American Elm Ulmus Americana L., Gene Silberhorn
American Elm Ulmus Americana L., Gene Silberhorn
Reports
The Wetland Flora Technical Report series provides concise information regarding the identification, growth habits, distribution, habitat, ecology and wetland indicator status for the title species. Illustrations are also included to aid in specimen identification.
Estimation Of Relative Abundance Of Recreationally Important Finfish In The Virginia Portion Of Chesapeake Bay: Annual Progress Report 1993-1994, Patrick J. Geer, Herb M. Austin
Estimation Of Relative Abundance Of Recreationally Important Finfish In The Virginia Portion Of Chesapeake Bay: Annual Progress Report 1993-1994, Patrick J. Geer, Herb M. Austin
Reports
Provisional annual indices of juvenile abundance have been generated from trawl survey data for six species of key recreational importance in the Virginia portion of Chesapeake Bay (spot, croaker, weakfish, summer flounder, black sea bass and striped bass) and two species of secondary importance (scup and white perch) for the period 1988-1993. No species has shown a continuous trend during the six year period. Spot has shown the largest decline from a high geometric mean catch per trawl of 68 (1988) to a low (1992) of 2, recovering to 9. 7 in 1993. Atlantic croaker continued to decline reaching levels …
Status Of The Major Oyster Diseases In Virginia 1993 A Summary Of The Annual Monitoring Program, Eugene M. Burreson, Lisa M. Ragone Calvo
Status Of The Major Oyster Diseases In Virginia 1993 A Summary Of The Annual Monitoring Program, Eugene M. Burreson, Lisa M. Ragone Calvo
Reports
No abstract provided.
Development Of Age Determination Methods, Life History/Population Dynamics Information, And Yield-Per-Recruit Simulation Modeling To Evaluate The Potential For Growth And Recruitment Overfishing Of Atlantic Croaker, Micropogonias Undulatus, In The Chesapeake Bay, Mark Chittenden, Luiz R. Barbieri, Cynthia M. Jones
Development Of Age Determination Methods, Life History/Population Dynamics Information, And Yield-Per-Recruit Simulation Modeling To Evaluate The Potential For Growth And Recruitment Overfishing Of Atlantic Croaker, Micropogonias Undulatus, In The Chesapeake Bay, Mark Chittenden, Luiz R. Barbieri, Cynthia M. Jones
Reports
The Atlantic croaker, Micropogonias undulatus, supports large recreational fisheries in the Chesapeake Bay region, where it has historically shown large fluctuations in abundance. Although many studies have been conducted on this species in this region over the last 50 years or more, commencing at least as early as Wallace (1940), little or no information exists to support yield modeling and wise management. The present studies were undertaken to provide basic life history/population dynamics information and yield modeling needed to wisely manage this species in the Chesapeake Bay region, and to evaluate the role that fishing plays in their fluctuations. Accordingly, …
Harvest Efficiency And Size Selectivity Of 3.00 And 3.25-Lnch Sea Scallop Dredge Rings, William D. Dupaul, James E. Kirkley
Harvest Efficiency And Size Selectivity Of 3.00 And 3.25-Lnch Sea Scallop Dredge Rings, William D. Dupaul, James E. Kirkley
Reports
No abstract provided.
Spice Bush Lindera Benzion (L.) Blume, Gene Silberhorn
Spice Bush Lindera Benzion (L.) Blume, Gene Silberhorn
Reports
The Wetland Flora Technical Report series provides concise information regarding the identification, growth habits, distribution, habitat, ecology and wetland indicator status for the title species. Illustrations are also included to aid in specimen identification.
The Role Of Tournaments As A Fishery Management Tool Data Collection, Herbert M. Austin
The Role Of Tournaments As A Fishery Management Tool Data Collection, Herbert M. Austin
Reports
No abstract provided.
Length Frequency Observations Of Lophius Americanus Taken During One Trip Aboard A Commercial Scalloper, Ryan Carnegie
Length Frequency Observations Of Lophius Americanus Taken During One Trip Aboard A Commercial Scalloper, Ryan Carnegie
Reports
No abstract provided.
Green Ash Fraxinus Pennsylvanica Marsh., Gene Silberhorn
Green Ash Fraxinus Pennsylvanica Marsh., Gene Silberhorn
Reports
The Wetland Flora Technical Report series provides concise information regarding the identification, growth habits, distribution, habitat, ecology and wetland indicator status for the title species. Illustrations are also included to aid in specimen identification.
Juvenile Finfish And Blue Crab Stock Assessment Program Bottom Trawl Survey Annual Data Summary Report Series Volume 1988, Michael F. Land, Patrick J. Geer, Christopher F. Bonzek, Herbert M. Austin
Juvenile Finfish And Blue Crab Stock Assessment Program Bottom Trawl Survey Annual Data Summary Report Series Volume 1988, Michael F. Land, Patrick J. Geer, Christopher F. Bonzek, Herbert M. Austin
Reports
The Virginia Institute of Marine Science (VIMS) has conducted a trawl survey of the Virginia tributaries to the Chesapeake Bay dating back to 1955. Over these forty years, methods and objectives have varied according to funding sources and state and/ or federal mandates. The present thrust of the program is to provide juvenile indices of relative abundance of recreationally, commercially, and ecologically important finfish and invertebrates. In 1988, the main area of focus was as a monitoring device of the resources of the Chesapeake Bay and its tributaries, as well as a way to create juvenile indices of key target …
Trends In The Distribution, Abundance, And Habitat Quality Of Submerged Aquatic Vegetation In Chesapeake Bay And Its Tidal Tributaries: 1971 To 1991, Robert J. Orth, Richard A. Batiuk, Judith F. Nowak
Trends In The Distribution, Abundance, And Habitat Quality Of Submerged Aquatic Vegetation In Chesapeake Bay And Its Tidal Tributaries: 1971 To 1991, Robert J. Orth, Richard A. Batiuk, Judith F. Nowak
Reports
This report builds on two decades of aerial and ground survey SA V distribution data, as well as development of SA V habitat requirements, establishment of SAV restoration goals and targets, compilation of historical water quality data, and implementation of a baywide monitoring program. The objectives of this report are to:
• describe trends in SAV distribution and abundance in Chesapeake Bay and its tidaf tributaries from 1 971 to 1991 ;
• relate SAV distribution over time with tiered distribution restoration goals and targets;
• compare trends in SAV distribution with corresponding trends in water quality; and • correlate …
Estimation Of Relative Abundance Of Recreationally Important Finfish In The Virginia Portion Of The Chesapeake Bay : Annual Progress Report, U.S. Fish And Wildlife Service Sportfish Restoration Project F104r2, July 1992 - June 1993, Revised Edition 1994, Patrick J. Geer, James A. Colvocoresses, Herbert M. Austin, Christopher F. Bonzek
Estimation Of Relative Abundance Of Recreationally Important Finfish In The Virginia Portion Of The Chesapeake Bay : Annual Progress Report, U.S. Fish And Wildlife Service Sportfish Restoration Project F104r2, July 1992 - June 1993, Revised Edition 1994, Patrick J. Geer, James A. Colvocoresses, Herbert M. Austin, Christopher F. Bonzek
Reports
This document is a revised edition of an original manuscript presented to the U.S. Fish and Wildlife Service and the Virginia Marine Resources Commission in partial fulfillment of contract obligations (Sportfish Restoration Project F104R2).
Juvenile Finfish And Blue Crab Stock Assessment Program Bottom Trawl Survey Annual Data Summary Report Series Volume 1993, Patrick J. Geer, Christopher F. Bonzek, Herbert M. Austin
Juvenile Finfish And Blue Crab Stock Assessment Program Bottom Trawl Survey Annual Data Summary Report Series Volume 1993, Patrick J. Geer, Christopher F. Bonzek, Herbert M. Austin
Reports
The Virginia Institute of Marine Science (VIMS) has conducted a trawl survey dating back to 1955. Over these forty years methods and objectives have varied according to funding sources and state and/or federal mandates. The present thrust of the program is to provide juvenile indices of relative abundance for recreationally, commercially, and ecologically important finfish and invertebrates. These measures of juvenile abundance are widely used as a key element in the management of the Atlantic States' coastal fishery resources. Estimates of juveniles (age-0) have been found to provide a reliable and early indicator of future year class strength. A review …
Thoughts On Flounder Management And The Need For Action In Virginia, Herbert M. Austin
Thoughts On Flounder Management And The Need For Action In Virginia, Herbert M. Austin
Reports
No abstract provided.
Juvenile Finfish And Blue Crab Stock Assessment Program Bottom Trawl Survey Annual Data Summary Report Series Volume 1986, Michael F. Land, Patrick J. Geer, Christopher F. Bonzek, Herbert M. Austin
Juvenile Finfish And Blue Crab Stock Assessment Program Bottom Trawl Survey Annual Data Summary Report Series Volume 1986, Michael F. Land, Patrick J. Geer, Christopher F. Bonzek, Herbert M. Austin
Reports
This report summarizes data collected by the Virginia Institute of Marine Science (VIMS) monthly trawl survey cruises for January-December 1986. The trawl survey is a long term, broad scope monitoring program. Its present primary goal is to produce annual indices of juvenile (young-of-year) abundance of commercially, recreationally and ecologically important marine and estuarine finfish and crustaceans. The objective is to provide indices of sufficient accuracy and precision for both immediate resource management needs and long-term understanding of environmental influences of fishery resources. A second important product of this effort is the documentation and monitoring of habitat utilization by juveniles and …
Juvenile Finfish And Blue Crab Stock Assessment Program Bottom Trawl Survey Annual Data Summary Report Series Volume 1987, Joy C. Dameron, Patrick J. Geer, Christopher F. Bonzek, Herbert M. Austin
Juvenile Finfish And Blue Crab Stock Assessment Program Bottom Trawl Survey Annual Data Summary Report Series Volume 1987, Joy C. Dameron, Patrick J. Geer, Christopher F. Bonzek, Herbert M. Austin
Reports
The Virginia Institute of Marine Science (VIMS) has conducted a trawl survey dating back to 1955. Over these forty years methods and objectives have varied according to funding sources and state and/or federal mandates. The present thrust of the program is to provide juvenile indices of relative abundance for recreationally, commercially, and ecologically important finfish and invertebrates. These measures of juvenile abundance are widely used as a key element in the management of the Atlantic States' coastal fishery resources and serve as an early indicator of future year class strength. The most abundant species captured in 1987 continued to be …
A Report To The Sea Scallop Plan Development Team: Preliminary Assessment Of 3.25" Ring Dredge, William Dupaul, James Kirkley
A Report To The Sea Scallop Plan Development Team: Preliminary Assessment Of 3.25" Ring Dredge, William Dupaul, James Kirkley
Reports
No abstract provided.
A Profile Of The Oyster Industry Northeastern United States, Douglas Lipton, James Kirkley
A Profile Of The Oyster Industry Northeastern United States, Douglas Lipton, James Kirkley
Reports
This is a critical period for the future of the east coast oyster industry. This report documents the dramatic decline in industry output which has been the impetus for a publicly funded program to "revtalize" the industry. Oyster biologists argue over the severityy of the decline and the cause, and also the potential remedies. Should non-native oysters, specifically Crassostrea gigas, be introduced into the region to replace the native oyster production? Are there ways to manage around the devastating oyster diseases MSX and Dermo? Will large populations of oysters significantly improve the water quality in currentiy degraded areas?
While these …
Restoration Of The Virginia Oyster Fishery The Alternative Species Strategy, Dennis Taylor
Restoration Of The Virginia Oyster Fishery The Alternative Species Strategy, Dennis Taylor
Reports
No abstract provided.
Evaluation Of Seismic Sources For Repelling Sea Turtles From Hopper Dredges, Virginia Institute Of Marine Science, John A. Musick, John A. Keinath, Et Al
Evaluation Of Seismic Sources For Repelling Sea Turtles From Hopper Dredges, Virginia Institute Of Marine Science, John A. Musick, John A. Keinath, Et Al
Reports
Hopper dredges are an effective way to both widen and deepen channels to accommodate deep draft shipping traffic. These dredging operations are required to comply with the Endangered Species Act of 1973 (Dickerson et al., 1991, Studt, 1985). It has been found that sea turtles can be entrained and killed during normal dredging operations. The five species of sea turtles that occur in the southeastern united states which may be harmed by dredging operations are the loggerhead (Caretta caretta), the green (Chelonia mydas), the Kemp's ridley (Lenidochelys kemnii) , the hawksbill (Eretomochelys imbricata) , and the leatherback (Qermochelys coriacea). Because …
Life Cycle Studies Of Perkinsus Marinus : Host Specificity : Final Report, Grant # Na16fl0399-01, Frank O. Perkins
Life Cycle Studies Of Perkinsus Marinus : Host Specificity : Final Report, Grant # Na16fl0399-01, Frank O. Perkins
Reports
This project represents a renewal of Grant# NA16FL0399-0l designed to further investigate the host specificity of Perkinsus marinus by surveying for its presence in molluscs obtained from Virginia's coastal and estuarine waters. As a result of that survey, determinations were made as to the host species most appropriate for use in transmission-of-infection experiments.
A Physiological Approach To The Understanding Of Parasite (Perkinsus Marinus) Interactions : Pathological Effects And Disease Resistance, Bruce Barber, Roger L. Mann
A Physiological Approach To The Understanding Of Parasite (Perkinsus Marinus) Interactions : Pathological Effects And Disease Resistance, Bruce Barber, Roger L. Mann
Reports
No abstract provided.