Carl James Schwarz - Retired from Statistics and Actuarial Science, SFU

• P.Stat. (Statistical Society of Canada)
• PStat® (American Statistical Association)

Consulting Work

We do consulting work in the fields of statistics, mathematics, and computer science. These include

• Capture-recapture, occupancy, distance sampling, nest survival studies
• Statistical ecology include study design, sampling methodology in many areas
• SAS, R, Quarto programming
• Expert witness and scientific panels reviewing large programs (e.g. Salmon on the Columbia River

The Petersen-Estimator (and much more) for Two-Sample Capture-Recapture Studies with Applications to Fisheries Management

• Standard Petersen; covariates; model selection;
• Stratified Petersen; fixed strata; geographical stratification (SPAS); temporal stratification (BTSPAS)
• Incomplete stratification;
• Double tagging to estimation and adjust for tag loss
• Mulitple Marks; multiple Petersens
• Forward and backward Petersens
• Genetic capture-recapture

R packages maintained by myself - available on CRAN

• BTSPAS - Bayesian Temporally stratified Petersen Analysis System - with Simon Bonner
• Petersen - Two sample Petersen Estimator - see above
• SightabilityModel - Estimating animal density using (stratified) sampling with sightability correction - MoosePop in R - with John Feinberg
• SPAS - Geographically Stratified Petersent Analysis System - with Neil Arnason

Workshop Notes

• Design and Analysis of Distance Sampling studies
• Design and Analysis of Nest Survival studies
• Design and Analysis of Occupancy studies

• Introduction to, Intermediate, and Advanced R programming

Teaching materials

• Introductory Statistics and Probability
• Intermediate ecological statistics
• Intermediate ecological statistics - selected webinars