Harvesting in an eight-species ecosystem

    Authors

    D. Finnoff;J. Tschirhart

    Abbreviated Journal Title

    J.Environ.Econ.Manage.

    Keywords

    ecosystems and economics; bioeconomic harvesting; multispecies ecosystem; SYSTEMS; HYPOTHESIS; PREDATION; Business; Economics; Environmental Studies

    Abstract

    The theory for a general equilibrium ecosystem model that can include large number of interacting species is presented. Features include: (1) individual plants and animals are assumed to behave as if they are maximizing their net energy intake, (2) short- and long-run equilibriums are obtained, (3) species' population adjustments depend on individual net energies. The theory is applied using simulations of an eight-species Alaskan marine ecosystem for which a "natural" equilibrium is calculated. Humans are introduced by adding a regulated open access fishery that harvests one of the species. Fishing impacts the fish population as well as the populations of other species, including Stellar sea lions, an endangered species. The sensitivity of fish and nonfish species populations to harvesting are calculated. (C) 2003 Published by Elsevier Science (USA).

    Journal Title

    Journal of Environmental Economics and Management

    Volume

    45

    Issue/Number

    3

    Publication Date

    1-1-2003

    Document Type

    Article

    Language

    English

    First Page

    589

    Last Page

    611

    WOS Identifier

    WOS:000182768800004

    ISSN

    0095-0696

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