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

Recruitment Systems with Stochastic Mortality." C.M. 1994/T:18,
Theme Session on Improving the Link Between Fisheries Science and
Management: Biological, Social, and Economic Considerations,
International Council for the Exploration of the Sea, 82 nd
Statutory Meeting, St. John's, Newfoundland, Canada, September, 29
pp.
Diffusion models provide a rigorous yet highly tractable means of
representing the behavior of stochastic systems. In this paper, attention is
focused on developing functional forms for the stationary (long-term)
probability density functions of stock size and other quantities of interest
in systems governed in part by a stock recruitment relationship (SRR). First,
a general classification of SRRs is developed and a number of well known stock
recruitment relationships are rescaled so as to exhibit two parameters in
common, namely their resilience and their recruitment carrying capacity.
Second, a general diffusion model is presented in which the stationary
distribution of stock size can be written explicitly as a function of four
parameters (usually rescaled linearly as a function of one or both of the
basic stock recruitment parameters): 1) the total mortality rate, 2) the net
rate of density independent migration (if any), 3) the magnitude of stochastic
perturbations in the system, and 4) the degree to which the influence of those
perturbations is a function of stock size. Third, the fishing mortality rates
that maximize expected stationary yield are compared across SRRs and parameter
values and their potential impacts on expected recruitment are explored.
Finally, the implications of alternative forms of the stock recruitment
relationship and alternative approaches to risk analysis ("frequentist" versus
"decision-theoretic") are examined. The possibility of stock collapse is
incorporated through use of a depensatory SRR as one of the examples.
Thompson, John R. (1967). "Development of a Commercial Fishery for the
Penaeid Shrimp Hymenopenaeus Robustus Smith on the Continental
Slope of the South-Eastern United States." Proceedings of the
Symposium on Crustacea, Part IV: 1454-1459.
In the early 1950's, the U.S. Bureau of Commercial Fisheries vessel
Oregon found large concentrations of royal red shrimp, Hymenopenaeus Robustus,
in the northern Gulf of Mexico on the continental slope off the Mississippi
River Delta. This finding was one result of a long term series of
explorations for resources of commercial worth that began on the continental
shelf of the northern Gulf and has since encompassed the shelf and slope from
Cape Hatteras, North Carolina to Brazil in the Gulf, Caribbean, and Western
Atlantic proper. Potentially commercial quantities of the royal red shrimp
have been found on Florida's east coast, off the Dry Tortugas, and in the
northern Gulf. Lesser quantities of the shrimp have been found throughout the
area explored with some potential off Venezuela and Colombia in the Caribbean
and off the Guianas in the Atlantic. By trawling the grounds where large
concentrations occurred off the U.S., and making demonstration landings as
well as publishing the results of the findings, the U.S. fishing industry has
been encouraged to make use of the new resource. Vessels of the Bureau have
fished alongside the commercial fleet on the new grounds to encourage them,
and at present a growing interest and a small scale continuous utilization is
being seen.
Thompson, Mark, Kenneth J. Roberts, and Perry W. Pawlyk (1984).
"Structural Changes in U.S. Shrimp Markets." In Proceedings of
the Workshop on Shrimp and Prawn Markets. International Institute
of Fisheries Economics and Trade and the South Carolina Wildlife
and Marine Resources Department, Charleston, South Carolina, July
26-27.
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