SEPODYM development and application to skipjack population and fisheries
نویسنده
چکیده
منابع مشابه
Parameter estimation for basin-scale ecosystem-linked population models of large pelagic predators: Application to skipjack tuna
A Spatial Ecosystem and Population Dynamic Model (SEAPODYM) is used in a data assimilation study aiming to estimate model parameters that describe dynamics of Pacific skipjack tuna population on ocean-based scale. The model based on advection–diffusion–reaction equations explicitly predicts spatial dynamics of large pelagic predators, while taking into account data on several mid-trophic level ...
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We apply an advection–diffusion reaction model to data from three different tuna tagging experiments in the western and central Pacific Ocean (WCPO) to reexamine the question of to what extent the population dynamics and spatial characteristics of tropical tunas require international cooperation for effective management. The median lifetime displacement of skipjack ranges from 420 to 470 nautic...
متن کاملSkipjack Movement and Fisheries Interaction in the Western Pacific
An advection-diffusion model in which movement parameters are variable in both time and space is applied to the analysis of skipjack tag and recapture data. Two data sets spanning the periods 1977-1982 and 1989-1992 are analysed. The results indicate that skipjack movement is highly variable in time and space with very little coherent pattern. The estimated movement pattern mortality and catcha...
متن کاملA spatial ecosystem and populations dynamics model (SEAPODYM) – Modeling of tuna and tuna-like populations
An enhanced version of the spatial ecosystem and population dynamics model SEAPODYM is presented to describe spatial dynamics of tuna and tuna-like species in the Pacific Ocean at monthly resolution over 1 grid-boxes. The simulations are driven by a bio-physical environment predicted from a coupled ocean physical–biogeochemical model. This new version of SEAPODYM includes expanded definitions o...
متن کاملSkipjack Tuna Availability for Purse Seine Fisheries Is Driven by Suitable Feeding Habitat Dynamics in the Atlantic and Indian Oceans
1 Directorate D—Sustainable Resource, Unit D.02 Water and Marine Resources, European Commission Joint Research Centre, Ispra, Italy, 2 UMR 248 MARBEC, IRD-IREMER-UM-CNRS, Seychelles Fishing Authority (SFA), Victoria, Seychelles, 3 Seychelles Fishing Authority, Mahe, Seychelles, 4 AZTI-Tecnalia, Marine Research Division, Pasaia, Spain, 5 Instituto Español de Oceanografia, Tropical Tuna Fisheries...
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تاریخ انتشار 2002