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Progress on the Across Trophic Level System Simulation (ATLSS) Program

This web resource describes the U.S. Geological Survey (USGS) Across Trophic Level System Simulation (ATLSS) Program, which has produced a set of models, including spatially explicit species index models, population demography models, and ecosystem process models that are designed to evaluate the ecological effects of hydrologic scenarios on More...

  • ATLSS High Resolution Multi-Source Topography (HMDT).

Smart River GIS for Improved Decision Making

Smart River GIS allows simultaneous views of river hydraulics, species specific habitat, and fish population simulations, for a better understanding of complex ecological interactions. Scientists used existing data sets from the South Platte River in Colorado to develop a prototype, with multiple layers of geographic information system, GIS, More...

  • 2-d animation image