abundance index
data obtained from samples or observations and used as a measure of the weight or number of fish which make up a stock, a segment of a stock such as spawners or in a given area. Most indices are relative units (as opposed to measuring absolute abundance), and simply indicate relative changes in abundance over time. The data is obtained from scientific surveys or inferred from fisheries data

Dictionary of ichthyology. 2009.

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  • abundance index — Information obtained from samples or observations and used as a measure of the weight or number of fish which make up a stock …   Fisheries — dictionary

  • abundance index — Information obtained from samples or observations and used as a measure of the weight or number of fish which make up a stock …   Fisheries — dictionary

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