Hampton Roads tunnel corridor survey report for the Virginia Department of Highways

A survey of a proposed bridge tunnel corridor across Hampton Roads from Newport News to Portsmouth was undertaken by the Virginia ·Institute of .Marine Science at the request of the Virginia Department of Highways. The objective was the estimation of the densities of hard clams, oysters and bottom shell

Estimated growth functions and size-age relationships of the hard clam, Mercenaria mercenaria, in the York River, Virginia

A study of the hard clam, Mercenaria mercenaria (Linnaeus, 1758) resources of Virginia is currently being conducted. One important aspect, their growth in this region, has been limited to the study of small juveniles (HAVEN & ANDREWS, 1957). Our objectives were to demonstrate that M. mercenaria growth functions could readily be derived and statistically contrasted, and, subsequently, the age-size relationship could be estimated

An investigation into commercial aspects of the hard clam fishery and development of commercial gear for the harvest of molluscs : final contract report for the period 1 July, 1970 through 30 June, 1973

Because of the volumes of data presented in the final report on An Investigation into Commercial Aspects of the Hard Clam Fishery and Development of Gear for the Harvest of Oysters , we are presenting here a brief summary of the results along with conclusions and recommendations

The Assessment of Commercial Fishing Effort in Virginia Annual Report 1989

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 fisheries, when available, have also been included

The Assessment of Commercial Fishing Effort in Virginia Annual Report 1990

The Virginia Institute of Marine Science (VIMS), through funding by the Virginia Marine Resources Commission (VMRC), has conducted an assessment of commercial fishing effort in Virginia\u27s major rivers and Chesapeake Bay beginning in late 1985 to the present, except for brief intervals when funding was unavailable. This report primarily summarizes the final year of assessment, from 1 October 1989 through 30 September 1990. 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 three major Virginia river systems. In the course of our data collection for the James, York and Rappahannock rivers, we have also obtained incidental effort data for these rivers and other areas in the Bay. Fyke net, haul seine and gill net fisheries data are included in this report

The Assessment of Commercial Fishing Effort in Virginia 1987

This report summarizes the assessment of commercial fishing effort in Chesapeake Bay and its Virginia tributaries during the period January 1, 1987 through December 31, 1987. Objectives of this study were: 1) to assess pound net fishing effort in Chesapeake Bay, and in the James, York and Rappahannock rivers; and 2) to assess anchor, drift, and stake gill net fishing effort in the James, York and Rappahannock rivers. The study period covered the calendar year which represents a natural break in fishing effort in Virginia. Data for fyke net and haul seine fisheries, when available, have also been included

The Effect of Tropical Storm Agnes on Oysters, Hard Clams, Soft Clams, and Oyster Drills in VIrginia

Tropical Storm Agnes had a major effect on the molluscan fisheries of Virginia. One effect was the direct mortality of oysters, Crassostrea virginiaa, in the upper parts of many estuaries. Typical losses on leased bottoms were: the James River, 10%; the York River, 2%; the Rappahannock River, 50%; and the Potomac River tributaries (Virginia) 70%. Economic loss was in excess of 7.9 million dollars. There was a nearly complete absence of oyster larvae attachment (setting) in 1972. Other effects of Agnes included a nearly complete loss of soft clams, Mya arenaria, in the Rappahannock River. Hard clams, Meraenaria meraenaria, were killed in the upper part of the York River. Oyster drills, Urosalpinx ainerea, were eliminated from the Rappahannock and reduced greatly in numbers in the York and James Rivers.https://scholarworks.wm.edu/vimsbooks/1074/thumbnail.jp

The assessment of commercial fishing effort in Virginia Annual Report 1986

This report summarizes the assessment of commercial fishing effort in Chesapeake Bay and its Virginia tributaries during the period October 1, 1985 through December 31, 1986. Objectives of this study were: 1. to assess pound net fishing effort in Chesapeake Bay, and in the James, York and Rappahannock rivers; and 2. to assess anchor, drift, and stake gill net fishing effort in the James, York and Rappahannock rivers. Additionally, two months of data for pound nets and anchor, drift, and stake gill nets have been included in order that the cessation of the study period would occur at a natural break in fishing effort in Virginia. Data for fyke net and haul seine fisheries have also been included