Environmental drivers of demography and potential factors limiting the recovery of an endangered marine top predator
Please contact the first author for questions about the code or data: Amanda J. Warlick ([email protected])
- We fit mark-resight data to a Bayesian multi-event model to examine mechanisms linking environmental conditions to population dynamics and inform conservation measures for an endangered top predator: the Steller sea lion.
- The first demographic estimates for Steller sea lions in regions where abundance continues to decline indicate low male pup and female juvenile survival.
- Pup survival was positively correlated with the North Pacific Gyre Oscillation during the study period.
- This work can advance efforts to identify factors driving regionally divergent abundance trends, with implications for population-level responses to future climate variability.
- SSL_CJS_CHdata.Rmd creates capture histories from raw data.
- SSL_CJS.Rmd contains code for running models.
- SSL_demographic_analysis_figs.R creates summary objects for inline references and figures.
Contains raw and processed data.
Contains raw and processed results.
Contains pdf versions of all figures in manuscript.
here_1.0.1 dplyr_1.0.5 nimble_0.12.1 lubridate_1.7.20 reshape2_1.4.4 hmisc_4.5-0
Warlick AJ, DS Johnson, TS Gelatt, and SJ Converse. 2022. Environmental drivers of demography and potential factors limiting the recovery of an endangered marine top predator. Ecosphere 2022:e4325. https://doi.org/10.1002/ecs2.4325.
Begin by running the code chunks in SSL_CJS_CHdata.Rmd to create the capture histories from the raw data. Use SSL_CJS.Rmd to run models and SSL_demographic_analysis_figs.R to create summary objects for inline references and figures.