TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

[A] numerical value used to demonstrate the trend in relative abundance over time.  3, record 1, English, - abundance%20index

Record number: 1, Textual support number: 1 CONT

Estimates of catch typically make up the bulk of the data that is applied to a stock assessment model. But most stock assessment models also require some kind of index of abundance. The index of abundance is a value that indicates the trend in relative abundance over time. Often[,] an index of abundance is simply the number of fish caught during a survey. The index of abundance for a cod stock, for example, may be the average number of cod caught per tow from a research vessel. Each tow would be of a specified length, depth and speed using a standardized net, so that the index of abundance values could be compared over time.  3, record 1, English, - abundance%20index

Record 1,  Textual support,  French

Record 1,  Textual support,  Spanish