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

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apparent shifts in the structure <strong>of</strong> the fleet, are discussed.<br />

Pedersen, Ole-Petter (1994). "A Multispecies Model <strong>of</strong> a Fjord System."<br />

C.M. 1994/P:12, Theme Session on Multispecies Interactions <strong>of</strong><br />

Importance to the Groundfish Abundance Fluctuations, International<br />

Council for the Exploration <strong>of</strong> the Sea, St. John's, Newfoundland,<br />

Canada, September.<br />

A multispecies model is introduced, applying techniques previously<br />

described by T. Laevastu. A stable solution for a typical Norwegian fjord is<br />

obtained. A stabilizing technique assuring convergence is used. After<br />

equilibrium is obtained, the ecosystem is released, and this 'out <strong>of</strong> control'<br />

scenario is simulated. A fleet regime is used, modelled through Cobb-Douglas<br />

equations. In addition a seabird dynamical regime was allowed to interact<br />

with the aquatic system. We found, despite release <strong>of</strong> previous constraints,<br />

the biomass solution tends to exhibit stable behavior, though transients<br />

occurs in a narrow time period after disturbance is applied. The solution is<br />

then moved to another equilibrium. Disturbance is in the form <strong>of</strong> excessive<br />

fishery, temperature oscillations, and removal <strong>of</strong> biomass due to airborne<br />

predators. The biomass dynamics during the year oscillates in a stable way,<br />

expressing good annual dynamics.<br />

Pedersen, S/oren Anker (1994). "Multispecies Interactions on the<br />

Offshore West Greenland Shrimp Grounds." C.M. 1994/P:2, Theme<br />

Session on Multispecies Interactions <strong>of</strong> Importance to the<br />

Groundfish Abundance Fluctuations, International Council for the<br />

Exploration <strong>of</strong> the Sea, St. John's, Newfoundland, Canada,<br />

September. 26 pp.<br />

The paper gives a description <strong>of</strong> the exploited fishery system on the<br />

<strong>of</strong>fshore West Greenland shrimp grounds, including recent findings <strong>of</strong> fish<br />

community structure and trophic relationships. Based on the analysis <strong>of</strong> fish<br />

stomachs from the key fish species and estimates <strong>of</strong> fish abundance obtained<br />

from assessment surveys the total annual consumption <strong>of</strong> northern shrimp<br />

(Pandalus borealis) and juvenile redfish by predatory fish in 1991-1992 has<br />

been calculated. A preliminary attempt to integrate the interrelationships<br />

between the main species and the fishery is made using a balanced, steady<br />

state model.<br />

Pellegrin, Gilmore J., Jr. (1982). "Fish Discards from the Southeastern<br />

United States Shrimp Fishery." In Food and Agriculture<br />

Organization <strong>of</strong> the United Nations and International Development<br />

Research Centre (1982). Fish ByCatch: Bonus from the Sea, Report<br />

<strong>of</strong> a Technical Consultation on Shrimp Bycatch Utilization held in<br />

Georgetown, Guyana, October 27-30, 1981. Ottawa, Ont., IDRC, 163<br />

pp.<br />

Magnitude and species composition <strong>of</strong> fish bycatch are described for the<br />

Gulf <strong>of</strong> Mexico and south Atlantic shrimp fleets. Bycatch estimates for the<br />

Gulf were 15 times those for the south Atlantic. Highest estimates occurred<br />

in the north-central and northwestern Gulf and in the south Atlantic <strong>of</strong>f the<br />

North Carolina and Georgia coasts. Catch compositions varied at the species<br />

level; however, Sciaenidae was the dominant family for both the Gulf and the<br />

south Atlantic. Gulf fauna included estuarine dependent species in<br />

subtropical environs and estuarine independent species in tropical environs.<br />

Pellegrin, Gilmore J., Jr., Shelby B. Drummond, and Robert S. Ford, Jr.<br />

(1985). "The Incidental Catch <strong>of</strong> Fish By the Northern Gulf <strong>of</strong><br />

Mexico Shrimp Fleet." Draft report, Mississippi Laboratories,<br />

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