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Mortality Rate of Fishes in the Pelagic Ecosystem

Canadian Journal of Fisheries and Aquatic Sciences · 1984 · Vol. 41(7) · pp. 1117–1120

Abstract

A size-dependent equation for mortality rate (M(w)) of fish-sized particles is derived using preexisting theory on the distribution of biomass as a function of size (w) in the pelagic marine ecosystem, assuming that mortality is primarily due to predation. The equation M(w) = ckw −x (where c, k, and x are parameters) yields estimates that are close to observed mortality rates.

Marine and fisheries research Fish Ecology and Management StudiesPelagic zoneBiomass (ecology)EcosystemPredationMarine ecosystemMortality rateEnvironmental scienceEcologyFisheryFish <Actinopterygii>

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TOWARD A METABOLIC THEORY OF ECOLOGY