Tool for sample size calculations for tributary survival studies.

Guidance on use of CBR software is provided in the user's manual. Individual assistance can be requested by emailing web@cbr.washington.edu — we are happy to answer questions on our software.

POPulation RECONstruction

Estimate population abundance based on full age-at-harvest data, supplemented with harvest effort and auxiliary estimates of survival, abundance, or harvest vulnerability.

This application is no longer supported or hosted by Columbia Basin Research. Should you need technical help or have any questions, please contact michael.v.clawson@gmail.com.