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Jim is a Computer Scientist at the Eastern Ecological Science Center in Laurel, MD.
Jim develops software for the analysis of animal population dynamics and management.
B.S. University of Maryland, Mathematics, 1979.
Capture-recapture software to correct raw counts of wildlife fatalities using trial experiments for carcass detecition probability and persistence time.
Estimates the total number of species from species presence-absence data on multiple sample sites or occasions using model M(h) from program CAPTURE.
Estimates patch occupancy rates and related parameters.
Computes estimates of survival and capture probability using capture-recapture data with "robust-design" models and recoveries.
Tests the null hypothesis that two samples of recoveries belong to the same bivariate distribution.
Computes estimates of survival and recovery rates for 2-age class band-recovery data.
Computes estimates of survival and capture probability for open capture-recapture models when sex is not allways known.
An R package to estimate nest abundance using a state-space superpopulation capture-recapture approach in which inference about detection proability is based on the age at first detection, as opposed to the sequence of re-detections in standard capture-recapture models.
Generates capture-history data for given s,theta,p,c.
Computes estimates of species richness using large scale data.
Computes survival-movement, capture and recovery probabilities from multi-strata capture-recapture-recovery data.
A Program to Estimate Animal Abundance and Density using Spatially-Explicit Capture-Recapture
Invasive species can cause extinctions of native species and widespread biodiversity loss. Invader removal is a common management response, but the...