A simplified formulation for fish production

被引：51

作者：

Mertz, G

Myers, RA ^{[1
]}

机构：

[1] Dalhousie Univ, Dept Biol, Killam Chair Ocean Studies, Halifax, NS B3H 4J1, Canada

[2] Fisheries & Oceans Canada, NW Atlantic Fisheries Ctr, St John, NF A1C 5X1, Canada

来源：

CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES | 1998年 / 55卷 / 02期

关键词：

D O I：

10.1139/cjfas-55-2-478

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

A new formulation for fish production is presented, one that clearly embodies the balance between aggregate somatic growth and losses due to natural and fishing mortality. The method permits simplified calculation of production over biomass and yield over production ratios; estimates of the latter can be used to investigate the reliability of yield as a proxy for production. Simple applications of the formulation indicate taxonomic variation in the yield to production ratio. Specifically, production is well approximated by yield for many piscivorous species, but yield seriously underestimates production for prey species.

引用

页码：478 / 484

页数：7

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