R/Stan code to estimate abundance of humpback chub in western Grand Canyon

Manuscript associated with this code: Dzul, M.C., Van Haverbeke, D.R., Young, K., Yackulic, C.B., Rinker, P.N., Yard, M.D. Accepted. Integrating mark-recapture, catch, and expert habitat assessments to quantify recent increases in humpback chub abundance over a 200 km long river segment of the Colorado River in western Grand Canyon. Canadian Journal of Fisheries and Aquatic Sciences. Data associated with this code are publicly available here: Dzul, M.C., Van Haverbeke, D.R., Rinker, P., Yackulic, C.B., and Yard, M.D., 2025, Catch and mark-recapture data to estimate abundance of humpback chub Gila cypha in western Grand Canyon from 2010-2024: U.S. Geological Survey data release, https://doi.org/10.5066/P1X6CXBP.