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Code Release for USGS Chesapeake Bay Studies - Data Catalog Application

Code and associated files hosted on USGS GitLab which support the USGS Chesapeake Bay Studies Data Catalog Application available at

Decision-Support Tool to Estimate SARS-CoV-2 Human-to-bat Transmission Risk

Source code to run Shiny app of North American bat SARS2 risk model during winter fieldwork

Summarize raster layers within overlapping polygons

Python code generated for the purpose of summarizing a defined set of discrete/categorical and/or continuous raster layers within zones that may be overlapping. Many widely used GIS tools to summarize raster layers within zones are not capable of handling overlapping zones. This code also allows for the computations to be completed over a number of separate raster layers at once and compiles the o

Utility and Vulnerability Ranking Programs for Terrestrial Vertebrates

To assist decision makers in risk assessments, two sets of indices have been developed to rank terrestrial vertebrates for their utility in biomonitoring and susceptibility.

Bandit Software

Bandit was the latest in a series of desktop applications aimed at helping bird banders manage and submit their data for banded birds of its time. Bandit was created by the Bird Banding Laboratory (BBL) at the USGS Patuxent Wildlife Research Center, Laurel, MD. Banders can now use the Bander Portal web application to submit their banding and recapture data. 

Contaminant Exposure and Effects-Terrestrial Vertebrates database (CEE-TV)

The Contaminant Exposure and Effects-Terrestrial Vertebrates database (CEE-TV) contains contaminant exposure and effects information for terrestrial vertebrates (birds, mammals, amphibians and reptiles) that reside in estuarine and coastal habitats along the Atlantic, Gulf and Pacific Coasts including Alaska and Hawaii and in the Great Lakes Region.


Capture-recapture software to correct raw counts of wildlife fatalities using trial experiments for carcass detecition probability and persistence time.

Evolutionary Ecology Software

The programs perform input file formation, distribution visualization, individual-based dynamic population simulation, pedigree accuracy assessment, effective population si


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.


Computes estimates of survival and recovery rates for 2-age class band-recovery data.