Software

This script is for analyzing raw eDNA qPCR data. It is designed to efficiently concatenate qPCR data from multiple plates exported as *.csv files. It will assist with completing several QA/QC checks and output documentation of these checks as well as helpful files for further review.

Anurans (frogs and toads) were surveyed using aural call surveys across the upper Midwest, United States from 2003 to 2008, and again in 2024. This code analyzes these data (from the associated data releases) using a multi-species occupancy model with imperfect detection, species traits, and species associations. It tests for relationships between covariates, occupancy, and detection...

Analysis code to evaluate Burbot tolerance to lampricide TFM, which is used in tributaries of the Great Lakes to control larval Sea Lamprey. A lab test of toxicity of this non-target species was conducted. This code examines the length and weight of test animals, visualizes water quality measures taken during the tests, and fits a dose response curve.

This repository contains an example application of the `Meta-IPM` Python package (https://doi.org/10.5066/P9PW673G). The specific application focuses on the upper Mississippi River using existing public data. The code for this project assumes the reader is familiar with Jupyter Notebooks, enough Conda and Python to install the `Meta-IPM` package, and population ecology. The example also...

Birds were surveyed using time-to-detection count methods across Uganda from 1985 to 2011. This code analyzes these data (from the associated data release) to test for relationships between tree cover, time (year), and species richness and occupancy.

This software release contains a generalized workflow to setup particle tracking analyses to assess groundwater travel times at the Navy-Northrop-Grumman site, in Nassau County, New York. This approach uses the posterior "texture model" inset model described by Fienen and others (2024) and made available in Corson-Dosch and others (2023) that simulates groundwater flow in the sole-source...

This repository contains R and JAGS code for fitting nonstationary demographic state-space models (NDSSM) to count-valued abundance data. Models use reduced dynamics but explicitly characterize growth rate distributions, including changepoints and/or volatility clustering for the timing and impacts of environmental stressors. Species fecundity is used to truncate growth rate...

The toxEval R-package includes a set of functions to analyze, visualize, and organize measured concentration data as it relates to https://www.epa.gov/comptox-tools/toxicity-forecasting-toxcast or other user-selected chemical-biological interaction benchmark data such as water quality criteria. The intent of these analyses is to develop a better understanding of the potential biological...

This repository is a code release to create and analyze simulated datasets to represent a tag-return study for the purposes of estimating annual removal rates of an invasive fish. The simulated scenarios cover ranges of parameters such as the number of fish tagged per year, magnitude of annual harvest rate, length of simulated study, probability of tag retention, probability of tag...

This repository contains a R package with 2-level and 3-level occupancy models. The package also contains a set of tutorials designed to help users understand how to use and code occupancy models in Stan. The models include a statistical hierarchy that allows for multi-species modeling and estimating correlations among species. The models may also be used as a more general "random-effect...

This repository contains code to run an occupancy model for eDNA data from a gradient along the Illinois River collected in 2015.

The multistater package can fit several types of multi-state models, including discrete-state discrete-time Hidden Markov Models using both maximum-likelihood and Bayesian approaches (HMMs) and discrete-state continuous-time state-space models (SSMs). The package was created to specify HMM and SSM designs that can be fit in both the frequentist and Bayesian paradigms within a single...