What Is a Stock Assessment?
A stock assessment provides a picture of a fish stock’s condition. It describes population characteristics: sizes, ages, sex, growth rates, and the ability of the population to reproduce and replace individuals lost to natural causes and fishery catch.
A stock assessment answers questions like:
- What portion of a stock is large enough to reproduce?
- How much fishing pressure can the stock withstand and still replace fish that die with fish born into the stock in the same year?
- If a stock is depleted, what catch can occur while also rebuilding to a healthy population size?
Types of Data Used in Stock Assessments
|Fisheries Independent Data|
|Federal Survey Data||State Survey Data||Ecosystem Data||Biological Samples||Cooperative Research Data|
|Fisheries Dependent Data|
|Commercial Fishery Observer Data||Commercial Fishery Logbook Data||Dealer Reports|
|Recreational Fishery Catch Estimates||Cooperative Research Data||Biological Samples|