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A Stock Assessment Program For Chesapeake Bay Fisheries: Development Of An Alosa Juvenile Index Of Abundance: Annual Report 1991, Douglas A. Dixon, Joseph G. Loesch

Reports

This presentation is the annual report for Contract No. NA17FUO196-0l "A Stock Assessment Program for Chesapeake Bay Fisheries: Development of an Alosa Juvenile Index of Abundance," for the period 1 May 1991 to 31 May 1992. The fishes of concern were the alewife (Alosa pseudoharengus), American shad (& sapidissima), and the blueback herring (A. aestivalis).

A Stock Assessment Program For Chesapeake Bay Fisheries: Development Of An Alosa Juvenile Index Of Abundance: Annual Report 1990, Douglas A. Dixon, Joseph G. Loesch

Reports

This presentation is the annual report for Contract No. NA90AA-H-SF671 "A Stock Assessment Program for Chesapeake Bay Fisheries: Development of an Alosa Juvenile Index of Abundance," for the period 15 June 1990 to 31 July 1991. The fishes of concern were the alewife (Alosa pseudoharengus), American shad (A. sapidissima), and the blueback herring (A. aestivalis).

The abundance of the Alosa stocks, once an important component of the landings of Virginia fisheries, have dramatically decreased in the last decade. The 1981 landings of Alosa species in Virginia were the lowest ever recorded. American shad and river herring are also pursued by …

Ecology And Dynamics Of River Herring Larvae In The Pamunkey River. Virginia: : June 1, 1989 - December 31, 1991, E. N. Sismour, Joseph G. Loesch

Reports

The early life histories of anadromous herrings (Alosa species) in tidal freshwater are poorly understood. Knowledge of the ecology of anadromous herring larvae in tidal freshwater ecosystems is important in order to understand factors which cause population fluctuations, to mitigate potential adverse effects of modifications to these systems, and to facilitate restoration of populations. This investigation was undertaken to examine the distribution and relative abundance of larval river herring (alewife, Alosa pseudoharengus, and blueback herring, A. aestivalis) and their potential zooplankton prey in tidal freshwater of the Pamunkey River, Virginia, and to quantify growth of larvae between locations that may …

Fish Assemblages At A Deep-Water Sewage Disposal Site (Dwd-106) : A Final Contract Report, J. A. Musick, J. C. Defosse, E. D. Grogan

Reports

Deep-water dumpsite 106 is located over the continental slope and rise about 106 miles east of New Jersey (Fig. 1). From March 1986 to July 1992 approximately eight million wet metric tons of sewage sludge were disposed there per year (Robertson and Redford, 1992). Because of the potential impact of this dumping on deep-sea ecosystems, NOAA/NMFS contracted the Virginia Institute of Marine Science, College of William and Mary (VIMS) to make otter-trawl collections in and around DWD 106 in 1990 and 1991. Specific objectives of these collections were:

1. To sample the demersal megafauna, especially fishes;

2. To provide frozen …