annotated bibliography of fisheries economics literature - Office of ...

only limited fishery independent measures of shark abundance and productivity.
While notable improvements in species specific catch information has been made
for a portion of the recent catches through observer data collections,
improved assessment advise will only result if these efforts are increased and
maintained for a reasonably long time period. In addition, improvements in
fishery independent measures of species specific abundance are still required.
Southeast Fisheries Science Center (1996). "1996 Report of the Shark
Evaluation Workshop." National Marine Fisheries Service, 75
Virginia Beach Drive, Miami, Florida, June, 80 pp.
The available data indicate that the catch rates of many of the species
and species groups have declined by 50 to 75% from the early 1970's to the mid
1980's. The most recent data indicate that the rapid rate of decline that
characterized the stocks in the mid 1980's has slowed significantly.
Abundance estimates from the more recent years are variable and a significant
statistical trend, either up or down, cannot be detected. The fishery has
been regulated for just three years and since the expected rates of change in
shark abundance are low, and our measures of stock abundance are uncertain,
sufficient observational data are not yet available to detect significant
changes in stock size after management measures were implemented.
Nevertheless, additional reductions in fishing mortality would improve the
probability of stock increases for Large Coastal sharks. Analyses indicate
that recovery is morel likely to occur with reductions in effective fishing
mortality rate of 50% or more. Reductions in effective fishing mortality can
be achieved by a change in the basic quota, minimum sizes, strategies to
differentially reduce fishing mortality on females, and seasonal closures to
protect reproductive females and young of the year. Insufficient data is
still the main impediment to improving shark stock assessments.
Southeast Fisheries Science Center (1996). "Summary Report on the
Status of Bycatch Reduction Device Development." National Marine
Fisheries Service, 75 Virginia Beach Drive, Miami, Florida,
January.
A compendium of reports made to the Gulf of Mexico Fishery Management
Council on bycatch reduction device development. The goal of the gear
development project is to develop shrimp trawl gear modifications and/or
fishing tactics that are capable of reducing the bycatch of finfish with
minimum loss of shrimp production. Specific objectives of the program were to
evaluate existing bycatch reduction techniques, collect data on behavior of
fish and shrimp in trawls, and to develop and evaluate new bycatch reduction
techniques. The key species targeted for reduction are red snapper, weakfish,
king and Spanish mackerel. Includes copies of overheads used in the Council
presentation.
Southeast Fisheries Science Center (1996). "Technical Specifications
and Minimum Requirements for the Extended Funnel, Expanded Mesh,
and Fisheye BRDS. In Summary Report on the Status of Bycatch
Reduction Device Development." National Marine Fisheries Service,
75 Virginia Beach Drive, Miami, Florida, January.
A technical explanation of the bycatch reduction devices proposed to
reduce finfish bycatch in the Gulf of Mexico shrimp fishery.
Southeast Regional Office (1994). "Wreckfish Report, 1993-1994 Season
with Comparisons." National Marine Fisheries Service, 9721
Executive Center Drive, North, St. Petersburg, FL.
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