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Creator:: Idels, Lev V. and Ou, Beiyan
Abstract:: We study the combined effects of periodically varying carrying capacity and survival rates on the fish population in the ocean (sea). We introduce a new delay differential equation model with a control parameter which describes how fish are harvested. We consider a predation function as the function of the delayed...
Resource Type:: Research Paper
Full Text:: new delay differential equation model with a control parameter which describes how fish are harvested

Creator:: Mardle, Simon, Thebaud, Olivier, Guyader, Olivier, Hutton, Trevor, Prellezo, Raul, and Travers, Muriel
Abstract:: The decision to enter or exit a fishery can be expected to depend on the anticipated profitability of operating in this fishery, as a function of observed vessel performances in previous years. For a vessel exiting a fishery, there may be several reasons including decommissioning, selling or operating elsewhere. Entry...
Resource Type:: Research Paper
Full Text:: , decommissioning, fisher behaviour, random utility models, logistic regression INTRODUCTION Early models of

Creator:: Prellezo, Raul, Andersen, Bo, Guyader, Olivier, Hutton, Trevor, Marchal, Paul, Mardle, Simon, and Thebaud, Olivier
Abstract:: Fisher behavior can be divided into choices made in the short term (i.e. tactics) and choices made in the long-mid term (i.e. strategies). Random utility modeling (RUM) is well suited for the empirical analysis of these issues. In this paper, RUM is applied to a number of EU fisheries in...
Resource Type:: Research Paper
Full Text:: Portsmouth Proceedings EXPLAINING SHORT-TERM CHOICE THROUGH RANDOM UTILITY MODELS Raúl Prellezo, AZTI

Creator:: Gentner, Brad
Abstract:: The National Marine Fisheries Service (NMFS) is mandated by law to analyze the benefits, costs, and economic impacts of the recreational fisheries policies it promulgates. NMFS has developed single species models that predict welfare and effort changes stemming from changes in various recreational regulations. Little is known, however, about angler...
Resource Type:: Research Paper
Full Text:: Marine Recreational Fisheries Statistical Survey (MRFSS) creel survey and the MRFSS random digit dial

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