ApexRMS is a team of scientists and software developers focussed upon designing and delivering state-of-the-art ecological models and decision support systems for natural resource management.

We provide consulting services and software solutions to government, industry, and non-governmental organizations across North America. Our focus areas include landscape ecology, vegetation and wildlife.

The key services we provide include:

  • ecological modeling
  • decision support system development
  • data analysis and interpretation
  • scientific workshop facilitation



March 21, 2014: Registration is now open for the 2nd state-and-transition simulation model conference in Fort Collins, CO, September 16-18, 2014

Mark your calendars for the Second State-and-Transition Simulation Modelling (STSM) Conference, hosted and sponsored by the U.S. Geological Survey, and co-sponsored by The Nature Conservancy and Apex Resource Management Solutions. Find out more, register or submit a paper at www.stsm2014.org

February 12, 2014: State-and-transition simulation model online conference presentation at the Society for Range Management

On February 12th at the 2014 Society for Range Management annual conference, ApexRMS delivered an online presentation on using state-and-transition simulation models to evaluate alternative land management scenarios.

December 13, 2013: ST-Sim, State-and-Transition Simulation Model Framework Version 2.0, now available for free download

Version 2.0 of ST-Sim, a spatially-explicit State-and-Transition Simulation Model framework, is now available for free download. This version includes fully integrated spatially-explicit capabilities with the ability to work with raster data sets for both model inputs and outputs. A number of important new features have been added to this version including the ability to track pools of stocks (e.g. carbon) and flows between pools (e.g. carbon fluxes). Documentation for ST-Sim is also available online.

December 1, 2013: State-and-transition simulation modeling publication released

The proceedings of the First Landscape State-and-Transition Simulation Modeling Conference are now available for free download as a U.S. Forest Service General Technical Report. This volume includes an article by Daniel and Frid (2012) outlining the history and approach behind state-and-transition simulation models (STSMs); it also includes several example applications using the STSM approach.

 Copyright 2007-2013 Apex Resource Management Solutions Ltd.