Biology and Ecosystems

Learn more about animal population analysis, and access, explore, and download U.S. species occurrence data.

Filter Total Items: 57
Composite Raster and Divergence Tool
January 26, 2018

The Composite Raster and Divergence Tool is an ArcGIS ArcMap add-in

January 25, 2018


What’s New: A new version of the SPARROW code is being developed in the R programming language. The advantage of R is that it is non-proprietary and does not require a license or software cost. The R – SPARROW code is now being completed and should be available early in CY18. Stay Tuned.

Screen shot of ScienceCache mobile application's map interface.
July 7, 2017

ScienceCache is a scientific geocaching mobile application framework.  By melding training and games into the hunt for place-based data collection sites, and incorporating photo uploads as data or for authentication, new volunteers can collaborate in robust data collection. As a volunteer, simply download the ScienceCache app, choose a route, and then follow the directions to collect data.  

Locations, eDNA samples, PCR repls
May 31, 2017

eDNAoccupancy allows users to specify and fit multi-scale occupancy models with or without covariates, to estimate posterior summaries of occurrence and detection probabilities, and to compare different models using Bayesian model-selection criteria.

Evoluntionary Ecology Software
April 12, 2017

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

Screen shot of The Random Landscape Tool’s interface.
March 8, 2017

Random Landscape Tool uses a raster data source and a table of classifications to create a random landscape. The classification table allows the user to weight the probability of occurrence to certain classes and to spatially restrict the distribution of classes to certain areas (zones).  

Shiny Apps
February 15, 2017

This data exploration tool is intented for use by researchers, resource managers, and the public to better understand the status of the fish community in Lake Erie.

January 23, 2017

Estimates patch occupancy rates and related parameters.

Kasilof coho salmon with radio tag antenna in it's mouth
January 10, 2017

Quantitative fatty acid signature analysis (QFASA) is a method of diet estimation introduced over a decade ago (Iverson et al. 2004). 

July 14, 2016

fatalityCMR - capture-recapture software to correct raw counts of wildlife fatalities using trial experiments for carcass detecition probability and persistence time. Version 3.0