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Full-Text Articles in Life Sciences

Oyster Spatfall In Virginia Rivers: 1989 Annual Summary, Bruce J. Barber Dec 1989

Oyster Spatfall In Virginia Rivers: 1989 Annual Summary, Bruce J. Barber

Reports

The Virginia Institute of Marine Science (VIMS) conducts surveys of oyster spatfall (or "setting") in Virginia waters throughout the summer reproductive period. This survey provides an estimate of the potential of a particular area for receiving a "strike 11 or set of oysters on the bottom and helps define the timing of setting events. Information obtained by this effort is valuable to the Virginia Marine Resources Commission (VMRC) for its shell repletion program, and to private oyster growers, both of whom are interested in maximizing the timing of shell planting. To assist in that area, a biweekly report of spatfall …


City Of Virginia Beach Marsh Inventory: Volume 3 Back Bay And Tributaries, Walter L. Priest Iii, Gene M. Silberhorn, Sharon Dewing Dec 1989

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.


A Summary Of Continuing Research With Non Native Oysters At The Virginia Institute Of Marine Science, Roger L. Mann Nov 1989

A Summary Of Continuing Research With Non Native Oysters At The Virginia Institute Of Marine Science, Roger L. Mann

Reports

No abstract provided.


Catch Trends And Fish Utilization In Virginia's Offshore Recreational Pelagic Fishery, 1987-1988, Jon A. Lucy, Nancy J. Chartier, William D. Dupaul Aug 1989

Catch Trends And Fish Utilization In Virginia's Offshore Recreational Pelagic Fishery, 1987-1988, Jon A. Lucy, Nancy J. Chartier, William D. Dupaul

Reports

No abstract provided.


City Of Portsmouth Tidal Marsh Inventory, Gene M. Silberhorn, Sharon Dewing Jul 1989

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

Reports

No abstract provided.


A Mark-Recapture Study Of Striped Bass In The James River, Virginia : Annual Report 1988, Joseph G. Loesch, Bruce W. Hill Jun 1989

A Mark-Recapture Study Of Striped Bass In The James River, Virginia : Annual Report 1988, Joseph G. Loesch, Bruce W. Hill

Reports

EXECUTIVE SUMMARY

1. In the Spring 1988, 2,145 striped bass were tagged in the James River.

2. The mean size of striped bass tagged in 1988 (351.6 mm) was 117.9 mm smaller than mean size in 1987. The difference may be due to different locations and times of tagging.

3. The dominant age group in 1987 was the 1982 year class but in 1988 the dominant age group was the 1984 year class. This difference may also be accounted for by different locations and times of tagging.

4. The exodus of the mature fish out of the river after spawning …


Hypoxia In The Lower Rappahannock Estuary, Albert Y. Kuo, Mohamed Z. Moustafa Jun 1989

Hypoxia In The Lower Rappahannock Estuary, Albert Y. Kuo, Mohamed Z. Moustafa

Reports

There are several objectives to this study. The immediate objective is to collect a comprehensive and consistent set of field observations to better describe the hypoxic condition in the Rappahannock River. Other objectives can be classified as short and long term goals.

Long term: (1) Identify and quantify the processes contributing to the dissolved oxygen budget in deep waters, and explain the variabilities among the three Virginia major tributary estuaries. (2) Provide information for resource management so that the James River can be protected from hypoxic problems and, perhaps, the problems in the York and Rappahannock Rivers can be alleviated. …


Virginia's Recreational Marlin And Tuna Fishery 1983 -1988 : A Report To The Fishermen, Eleanor A. Bochenek, Nancy J. Chartier, Jon A. Lucy Jun 1989

Virginia's Recreational Marlin And Tuna Fishery 1983 -1988 : A Report To The Fishermen, Eleanor A. Bochenek, Nancy J. Chartier, Jon A. Lucy

Reports

No abstract provided.


Sediment Processes Monitoring Annual Report For Calendar Year 1988, Richard Wetzel, Bruce Neilson Jun 1989

Sediment Processes Monitoring Annual Report For Calendar Year 1988, Richard Wetzel, Bruce Neilson

Reports

No abstract provided.


Marine Fishery Population Trends Current And Emerging Natural Resource Issues, Herbert Austin May 1989

Marine Fishery Population Trends Current And Emerging Natural Resource Issues, Herbert Austin

Reports

No abstract provided.


Occurrence Of Indicators Of Fecal Pollution In Water And Sediment Of A Subestuary Impacted By Non-Point Pollution, Howard I. Kator, Martha Rhodes May 1989

Occurrence Of Indicators Of Fecal Pollution In Water And Sediment Of A Subestuary Impacted By Non-Point Pollution, Howard I. Kator, Martha Rhodes

Reports

No abstract provided.


Determination Of Marina Buffer Zones Using Simple Mixing And Transport Models : A Report To The Virginia State Dept. Of Health, Bureau Of Shellfish Sanitation As Part Of The Chesapeake Bay Initiatives Marine Pollution Abatement Initiative, John M. Hamrick, Bruce J. Neilson May 1989

Determination Of Marina Buffer Zones Using Simple Mixing And Transport Models : A Report To The Virginia State Dept. Of Health, Bureau Of Shellfish Sanitation As Part Of The Chesapeake Bay Initiatives Marine Pollution Abatement Initiative, John M. Hamrick, Bruce J. Neilson

Reports

This report describes the rationale, development and application of simple mixing and transport models for the determination of marina buffer zones and buffer zones for other point source discharges. Included in the report are two computer programs for implementation of the most general two dimensional transport model.


Geotechnical And Benthic Evaluation Of Sand Resources In The Lower Chesapeake Bay - Report 1: Thimble Shoal, Suzette M. Kimball, Linda C. Schaffner, Carl H. Hobbs Iii Apr 1989

Geotechnical And Benthic Evaluation Of Sand Resources In The Lower Chesapeake Bay - Report 1: Thimble Shoal, Suzette M. Kimball, Linda C. Schaffner, Carl H. Hobbs Iii

Reports

This report details the results of an exploration program to delineate reserves containing quantities of beach quality sand suitable for emplacement on public recreational beaches in the City of Hampton.


Zinc Distributions In Sediments, The Common Mussel, Mytilus Edulis (L.), The American Oyster, Crassostrea Virginica (Gmelin), And The Commensal Pea Crab, Pinnotheres Ostreum (Say), Cheol Mo, Bruce Neilson Mar 1989

Zinc Distributions In Sediments, The Common Mussel, Mytilus Edulis (L.), The American Oyster, Crassostrea Virginica (Gmelin), And The Commensal Pea Crab, Pinnotheres Ostreum (Say), Cheol Mo, Bruce Neilson

Reports

Oysters and mussels of varying sizes and sediment samples were collected from oyster beds with different salinity regimes of three Virginian coastal plain rivers: Rappahannock River. James River. and Piankatank River. Zinc concentrations of 1) soft tissues. gut contents. and shells of the oysters. 2) soft tissues of the mussels. 3) pea crabs. and 4) sediment samples were measured with a flame atomic absorption (Flame AA) spectrophotometer. Particulate organic carbon and nitrogen concentrations ·of the sediments were measured with a carbon-nitrogen analyzer. The contribution of extraneous materials. such as gut contents. faeces. and pea crabs. to the variability in oyster …


Laboratory And Field Studies Of Oyster Larvae Settlement On Three Substrates, Oyster Shell, Tire Chips, And Expanded Shale, And The Relative Mobility Of The Three Substrates, Mary C. Gibbons, Roger L. Mann, L. D. Wright Mar 1989

Laboratory And Field Studies Of Oyster Larvae Settlement On Three Substrates, Oyster Shell, Tire Chips, And Expanded Shale, And The Relative Mobility Of The Three Substrates, Mary C. Gibbons, Roger L. Mann, L. D. Wright

Reports

No abstract provided.


Feasibility Of Crab Meal Processing In The Chesapeake Bay Region Ii: An Integrated Economic Analysis For Hampton/Newport News, Virginia, Phillip R. Grulich, William D. Dupaul Feb 1989

Feasibility Of Crab Meal Processing In The Chesapeake Bay Region Ii: An Integrated Economic Analysis For Hampton/Newport News, Virginia, Phillip R. Grulich, William D. Dupaul

Reports

The crab waste problem in Virginia and Maryland has been well documented by past research efforts, (Hatem, 1980) (Murray and DuPaul 1981) (Cathcart et, al.1984). Murray and DuPaul (1981) documented both the magnitude and location of the problem in Maryland and Virginia. Their analysis provided a description of the total waste disposal problem in the Bay and pinpointed specific trouble spots. The report provided enterprise budgets for three locations; Hampton, Virginia, Crisfield, Maryland, and Cambridge, Maryland. These locations were chosen because of their proximity to crab processors and their ability to produce sufficient quantities of crab waste to make a …


Prevalence Of The Major Oyster Diseases In Virginia Waters 1988 A Summary Of The Annual Monitoring Program., Eugene M. Burreson Feb 1989

Prevalence Of The Major Oyster Diseases In Virginia Waters 1988 A Summary Of The Annual Monitoring Program., Eugene M. Burreson

Reports

No abstract provided.


Field Studies Of Comparative Settlement Of Oyster Larvae On Oyster Shell, Expanded Shale And Tire Chips, Roger L. Mann Jan 1989

Field Studies Of Comparative Settlement Of Oyster Larvae On Oyster Shell, Expanded Shale And Tire Chips, Roger L. Mann

Reports

No abstract provided.


Catch Projection For The 1988-89 Blue Crab Dredge Fishery, Rom Lipcius, Willard A. Van Engel Jan 1989

Catch Projection For The 1988-89 Blue Crab Dredge Fishery, Rom Lipcius, Willard A. Van Engel

Reports

No abstract provided.


A Comparison Of The Utermohl And Epifluorescent Microscopic Techniques For Quantifying Natural Picophytoplankton : Final Report, Leonard W. Haas, Harold G. Marshall Jan 1989

A Comparison Of The Utermohl And Epifluorescent Microscopic Techniques For Quantifying Natural Picophytoplankton : Final Report, Leonard W. Haas, Harold G. Marshall

Reports

The phytoplankton monitoring program in the Virginia portion of the Chesapeake Bay was initiated in July 1985. A total of 13 stations (7 in the lower Chesapeake Bay and 6 in the major trtbutaries) are sampled on a regular basis to quantify phytoplankton (Birdsong et al., 1987; 1988). A primary objective of the monitoring program is to document longterm trends in phytoplankton abundance and species composition and use this information as one means of evaluating the effectiveness of pollution abatement strategies, particularly related to the reduction of nutrients to the Chesapeake Bay.

The philosophy of monitoring programs is to consistently …


A Mark-Recapture Study Of Striped Bass In The Rappahannock River, Virginia Annual Report 1988-1989, Joseph G. Loesch, Bruce W. Hill Jan 1989

A Mark-Recapture Study Of Striped Bass In The Rappahannock River, Virginia Annual Report 1988-1989, Joseph G. Loesch, Bruce W. Hill

Reports

A total of 3,892 striped bass were tagged and released in the Fall 1988 and 1,316 fish in the Spring 1989 on the Rappahannock River.

In the Fall, 77.6% of the tagged striped bass were less than 400 mm FL. In contrast, 81.5% of the fish were 400 mm FL or greater in the Spring.

The available striped bass stock in the Fall is more vulnerable to fishing than is the available stock in the Spring. Recaptures per net day of tagged striped bass in pound nets in the Fall 1987 were seven times greater than in the Spring 1988, …


Status Of The Public Oyster Fishery Of Virginia - Fall 1989, Bruce Barber Jan 1989

Status Of The Public Oyster Fishery Of Virginia - Fall 1989, Bruce Barber

Reports

This report summarizes data collected during 1989 in the Virginia portion of the Chesapeake Bay. The report focuses on the fall oyster survey in Virginia.


Striped Bass Research, Virginia - Annual Report 1987-88, Virginia Institute Of Marine Science Jan 1989

Striped Bass Research, Virginia - Annual Report 1987-88, Virginia Institute Of Marine Science

Reports

The research reported herein is directly in response to priorities established in the "Action Plan" of the Emergency Striped Bass Study (the Chafee Amendment (PL 96-118) of the Anadromous Fish Conservation Act (PL 89 -304 )) . The Amendment was the result of a decline in striped bass landings along the Atlantic Coast that began in the mid-1970's. The Virginia Institute of Marine Science (VIMS) had previously conducted a juvenile striped bass seining program from 1967 through 1973 which was discontinued at that point due to a loss of funding. The program was reinstated in 1980 with funding from the …


The Assessment Of Commercial Fishing Effort In Virginia Annual Report 1989, Joice S. Davis, James C. Owens, Joseph G. Loesch Jan 1989

The Assessment Of Commercial Fishing Effort In Virginia Annual Report 1989, Joice S. Davis, James C. Owens, Joseph G. Loesch

Reports

This report summarizes an assessment of commercial fishing effort in the Chesapeake Bay and its Virginia tributaries during the period 1 October 1988 through 30 June 1989. Objectives of the study were: 1) to assess pound net fishing effort in Chesapeake Bay, in the James, York, Rappahannock, and Potomac rivers, and the Virginia tributaries to the Potomac River; and 2) to assess stake, anchor and drift gill net fishing effort in the James, York and Rappahannock rivers.

The study period began on 1 October 1988 and ended on 30 June 1989. Data for fyke net, haul seine and mullet net …


Development And Implementation Of A Catch And Effort Data Collection System For Monitoring Trends In Fishing Success On Virginia's Artificial Fishing Reefs, 1987-1988 : For The Period January 1, 1988 - December 31, 1988, Jon A. Lucy, Charles G. Barr Jan 1989

Development And Implementation Of A Catch And Effort Data Collection System For Monitoring Trends In Fishing Success On Virginia's Artificial Fishing Reefs, 1987-1988 : For The Period January 1, 1988 - December 31, 1988, Jon A. Lucy, Charles G. Barr

Reports

The basic objective of the study was to identify a core population of recreational fishermen owning private boats and fishing one or more Virginia artificial reefs or other popular wreck fishing sites (Figure land Table l) with some degree of regularity (making a minimum of two or three reef trips per season). This population of fishing boat owners would be sampled randomly, by either telephone or fishing log books, to determine fishing effort and catch rates characterizing trips made to specific reef and other popular wreck fishing sites during the 1987 fishing season. Examination of the resulting data would determine …


Public Oyster Shoal Survey - Spring 1989, Bruce Barber Jan 1989

Public Oyster Shoal Survey - Spring 1989, Bruce Barber

Reports

This report summarizes data collected during 1989 in the Virginia portion of the Chesapeake Bay. The report focuses on the spring oyster survey in Virginia.


Study Of Alosa Stock Composition And Year-Class Strength In Virginia - Annual Report 1988, Loisirene Blumberg, Joseph G. Loesch Jan 1989

Study Of Alosa Stock Composition And Year-Class Strength In Virginia - Annual Report 1988, Loisirene Blumberg, Joseph G. Loesch

Reports

Objectives

1. Estimate fishing effort, landings, and catch-per-unit-of-effort of aduit river herring (alewife and blueback herring) and American shad in Virginia during the 1988 fisheries.

2. Determine the present status of the stocks relative to former yean; by comparison of landings and CPUE.

3. Estimate current biological statistics (age and size frequencies, species composition, etc.) of river herring and American shad.


Striped Bass Research, Virginia: Characterization Of Virginia's Striped Bass Commercial Fisheries Annual Report 1988-89, Bruce W. Hill, Joseph G. Loesch Jan 1989

Striped Bass Research, Virginia: Characterization Of Virginia's Striped Bass Commercial Fisheries Annual Report 1988-89, Bruce W. Hill, Joseph G. Loesch

Reports

The research reported herein (and in the 1982 through 1987 annual reports) is directly related to Priority III stated in the "Action Plan" (p. 15) of the Emergency Striped Bass Study (Anadromous Fish Conservation Act Amendment, Public Law 96-118). The amendment was the result of a decline in striped bass (Marone saxatilis) landings from Maine to North Carolina since the mid-1970's. This report summarizes the results of the fall 1988 and spring 1989 sampling period and compares these results with the previous work.


Striped Bass Research, Virginia - Annual Report 1988-89, Virginia Institute Of Marine Science Jan 1989

Striped Bass Research, Virginia - Annual Report 1988-89, Virginia Institute Of Marine Science

Reports

The research reported herein (and in the 1982 through 1987 annual reports) is directly related to Priority III stated in the "Action Plan" (p. 15) of the Emergency Striped Bass Study (Anadromous Fish Conservation Act Amendment, Public Law 96-118). The amendment was the result of a decline in striped bass (Morone saxatilis) landings from Maine to North Carolina since the mid-1970's. This report summarizes the results of the Fall 1988 and Spring 1989 sampling periods and compares these results with the previous work.


Striped Bass Research, Virginia : Estimation Of Juvenile Striped Bass Relative Abundance, Annual Report 1988, James A. Colvocoresses Jan 1989

Striped Bass Research, Virginia : Estimation Of Juvenile Striped Bass Relative Abundance, Annual Report 1988, James A. Colvocoresses

Reports

The Virginia Institute of Marine Science (VIMS) has conducted a juvenile striped bass seine survey during the years from 1967 through 1973 and from 1980 through the present, with the primary objective of monitoring the relative annual recruitment success of juvenile striped bass in the spawning and nursery areas of Lower Chesapeake Bay. The survey was funded during it's initial period by the U.S. Fish and Wildlife Service and then reinstated in 1980 with funding from the National Marine Fisheries Service under the Emergency Striped Bass Study program. Commencing with the 1988 annual survey reported herein, support of the program …