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Current and future hydrology and occupancy predictions for boreal toads (Anaxyrus boreas boreas) in the Southern Rocky Mountains

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: August 01, 2026 at 05:54 AM | Dataset Last Updated: July 15, 2025 at 12:00 AM
These data consist of three primary types of products for managers of boreal toads in the Southern Rocky Mountains: 1) Re-constructed hydroperiods for historical breeding sites from LANDSAT imagery from 1985-2022 (SMA_hydroperiod_reconstruction.csv). This dataset was developed using a Spectral Mixture Analysis (SMA). 2) Current (1985-2022) and future (2040-2069) predictions of probability of drying and surface area estimates for historical breeding sites (Current_hydrology_predictions.csv, Future_hydrology_predictions.csv). These datasets were developed using a Bayesian hurdle model with the surface water area estimate from the SMA as the response variable. 3) Current (1985-2020) and future (1955-1969) predictions of occupancy for boreal toads (Anaxyrus boreas boreas) and the amphibian chytrid fungus (Batrachochytrium dendrobatidis) at three spatial scales; breeding site (Current_future_occ_prob_ind_site.csv), mountain range (Current_future_occ_prob_mtn_range.csv) and Southern Rocky Mountain Region (Current_future_occ_prob_SRM.csv). These datasets were developed from a Bayesian dynamic state-space community model.

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