cohort analysis
A technique for estimating the magnitude of fishing mortality and the number of fish at each age in a stock.

Fisheries — dictionary. . 2004.

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  • cohort analysis — A method used in employment discrimination suits to test for race discrimination whereby all employees who start together at the same level are surveyed over the course of an observation period and their comparative progress in salary and… …   Black's law dictionary

  • cohort analysis — A method used in employment discrimination suits to test for race discrimination whereby all employees who start together at the same level are surveyed over the course of an observation period and their comparative progress in salary and… …   Black's law dictionary

  • age-cohort analysis — the proportion of each age group participating in an activity currently used to predict the future sizes of each age group …   Dictionary of ichthyology

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  • Cohort study — For other senses of this word, see cohort (disambiguation). A cohort study or panel study is a form of longitudinal study (a type of observational study) used in medicine, social science, actuarial science, and ecology. It is an analysis of risk… …   Wikipedia

  • virtual population analysis — A mathematical modelling technique used in stock assessment, whereby the number of fish in each cohort is estimated from numbers in the next oldest or next youngest age group, adjusted for the changes due to fishing and natural mortality; see… …   Fisheries — dictionary

  • virtual population analysis — an algorithm for computing historical fishing mortality rates and stock sizes by age or length, based on data on catches, natural mortality, and certain assumptions about mortality for the last year and last age group. Essentially reconstructs… …   Dictionary of ichthyology

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