Christensen, Villy and Pauly, Daniel (1998) Changes in models of aquatic ecosystems approaching carrying capacity. Ecological Applications, Vol.8 (1). pp. 104-109. ISSN 1051-0761
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Using a top-down modeling approach, published mass-balance models of trophic interactions and state variables in the western central Pacific Ocean and the northern Gulf of Mexico shelf were used to explore how large increases in top predator biomasses can be accommodated with given primary productions. It appears that the biomasses of top predators in these models can be increased an order of magnitude, which leads to asix- to sevenfold increase in overall consumer biomasses. This results in changes in foodweb structures that are in agreement with major aspects of E. P. Odum’s theory of ecosystem development, particularly with regard to features associated with the retention and recyclingof detritus. Based on the simulations and Odum’s theory, we propose a functional definitionof carrying capacity: the upper limit of biomass that can be supported by a set primaryproduction and within a variable food web structure is reached when total system respiration equals the sum of primary production and detritus import.
| Item Type: | Articles |
|---|---|
| Keywords: | Biomass, Fishing Efforts, Overfishing, Ecosystem Based Management, Stock Assessment, Marine Fisheries, Sustainable Fisheries, Gulf of Mexico, Ecosystem |
| Subjects: | Right to Resources |
| Depositing User: | Users 4 not found. |
| Date Deposited: | 11 May 2022 04:03 |
| Last Modified: | 19 May 2022 06:57 |
| URI: | http://icsfarchives.net/id/eprint/14292 |
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