Software
An official USGS software project is code reviewed and approved at the bureau-level for distribution.
Filter Total Items: 922
Software to support A method to implement natural flow regimes for regulated rivers Software to support A method to implement natural flow regimes for regulated rivers
This code shows loading and formatting data, a series of functions to implement flow management constraints, a function to estimate parameters that drive daily discharge predictions, the optimization of the estimating function, and plotting code.
grsg_lekdb: Compiling and standardizing greater sage-grouse lek databases (ver. 1.4.0) grsg_lekdb: Compiling and standardizing greater sage-grouse lek databases (ver. 1.4.0)
Greater sage-grouse (Centrocercus urophasianus) are landscape-scale sagebrush obligate species and an important gamebird and iconic species of the western United States. They occupy the sagebrush biome in western North America, extending east of the Sierra Nevada/Cascade Mountain ranges to the western regions of the Great Plains of the United States. Sage-grouse are one of the most...
Code for manuscript: Post hoc statistical analyses cannot standardize occupancy estimates across variable survey protocols Code for manuscript: Post hoc statistical analyses cannot standardize occupancy estimates across variable survey protocols
The purpose of this code is to replicate the analyses associated with the manuscript: Parvin, L.K., V. Jirinec, M. Leu, and J.J. Valente. (in review). Survey protocols drive heterogeneity in occupancy estimates that cannot be standardized using post-hoc analyses. Ecological Solutions and Evidence.__ This manuscript simulates point count sampling of a simulated Wood Thrush (Hylocichla...
Great Plains grassland bird abundance trends Great Plains grassland bird abundance trends
Of all bird guilds in North America, grassland birds have experienced the sharpest declines since 1970. Here, we use the bbsBayes R package to estimate abundance of 50 species of grassland birds from 1984 - 2019 in the Plains states. To run these analyses, open the "GreatPlainsBirds.RProj" file, open the "GreatPlainsBirds_Analysis.R" script file, and run this script. NOTE: Running the...
Phenological date matching for invasive species mapping: code for an R workflow (version 1.0.0) Phenological date matching for invasive species mapping: code for an R workflow (version 1.0.0)
This code set is an R workflow for phenological date matching to provide an open-source solution for projects with limited funding to allow users to calculate Normalized Difference Vegetation Index (NDVI) from sentinel-2 imagery dates specified by a user supplied date raster (phenology raster) for mapping and forecasting geographic distributions of invasive plant species at large spatial...
Grizzly Bear Simulation Code Examples Grizzly Bear Simulation Code Examples
This software release contains the core code and example data for generating animal movement simulations using step selection functions (SSFs). The approach is based on simulation methods used in a series of grizzly bear studies by Sells et al. (2022–2024). In general, an SSF is fit to animal movement data and associated environmental covariates, and the fitted model is used to simulate...