Marine fishery

Marine fishery

The study and management of living marine resources and their habitat for the sustainable use of those resources and continued productivity, abundance.

Industry: Fishing

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Marine fishery

The increase in yield obtained by an increase in fishing effort (or fishing mortality) by one unit. In mathematical terms, it is given by the slope of the tangent to the relationship between effort ...

Optimum age

Fishing; Marine fishery

The average age of the fish in a year-class at which the instantaneous rate of natural mortality equals the instantaneous rate of growth in weight for the year-class as a whole. At this age, the ...

Reversibility

Fishing; Marine fishery

The extent to which a change in a stock or ecosystem induced by exploitation will reverse itself when the causative factor is removed. Extinction of a species is an example of an irreversible ...

Spawner-recruit relationship

Fishing; Marine fishery

The concept that the number of young fish (recruits) entering a population is related to the number of parent fish (spawners).

Sensitivity analysis

Fishing; Marine fishery

In stock assessment modeling, the process of testing the sensitivity of model results in relation to errors and uncertainties in the input parameters. For example, a virtual population analysis ...

Confidence interval (CI)

Fishing; Marine fishery

The probability, based on statistics, that a number will be between an upper and lower limit.

Marine pollution

Fishing; Marine fishery

The introduction by man, directly or indirectly, of substances or energy into the marine environment (including estuaries) resulting in such deleterious effects as harm to living resources, hazards ...