Coyote Inventory - Visualizing Density Across Islands and Seasons - Analysis Scripts for Cape Hatteras and Cape Lookout National Seashores and Pea Island National Wildlife Refuge
Sossover D. 2026. Coyote Inventory - Visualizing Density Across Islands and Seasons - Analysis Scripts for Cape Hatteras and Cape Lookout National Seashores and Pea Island National Wildlife Refuge. National Park Service
Visualizing_Density_Across_Islands_and_Seasons_Plus_Generating_Table_w_Abundances_w_95CrI.R — Reads the posterior abundance and density outputs and produces spatial density maps across islands by season and a formatted summary table of abundance estimates with 95% credible intervals. Our population analysis uses an open-population robust design Jolly-Seber (RDJS) multi-state mark-recapture framework. Coyotes were individually identified through microsatellite genotyping of non-invasive scat samples collected across four replicate sampling rounds (survey round AKA secondary occasions) within each season (primary period). The model was implemented in R interfacing with JAGS for Bayesian estimation and simultaneously estimates apparent survival, recruitment, population size, and state-specific detection probabilities across islands and seasons. Posterior distributions from the fitted model are then passed to a separate script to calculate population growth rates (lambda) and associated credible intervals. The model was implemented in R interfacing with JAGS for Bayesian estimation. It simultaneously estimates apparent survival, recruitment, population size, and state-specific detection probabilities across islands and seasons. Posterior distributions from the fitted model are then passed to a separate script to calculate finite population growth rates (lambda) and associated credible intervals.
- Type
- Script
- Authors
- Sossover, Daniel
- Date of Issue
- 2026-03-11
- Publisher
- National Park Service
- Units
- CAHA , CALO
- Keywords
- CAHA, CALO, coyote, IMD, Inventory and Assessment Program, Islands, Jolly-Seber Multi-State Model, Movement, National Park Service, NPS, NPS Inventory and Monitoring Division, Pea Island National Wildlife Refuge, Population Dynamics, population modeling, Species Inventory