Hi, May be of interest: The First Ecological Land Units Map of the World http://blogs.esri.com/esri/esri-insider/2014/12/09/the-first-detailed-ecological-land-unitsmap-in-the-world/ Explore the Ecological Tapestry of the World: http://ecoexplorer.arcgis.com/eco/ Story Map: http://story.maps.arcgis.com/apps/MapJournal/index.html?appid=dc91db9f6409462b887ebb1695b9c201&webmap=dd6f7f93d54341a69a47002696cf5744 Booklet: A New Map of Global Ecological Land Units – An Ecophysiographic Stratification Approach http://www.aag.org/global_ecosystems Additional USGS datasets and data information sources from our group: http://www.usgs.gov/core_science_systems/csas/index.html Enjoy the day, Emily ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Emily Wild Librarian (Physical Scientist) U.S. Geological Survey Denver Library Box 25046, MS 914 Denver Federal Center Denver, CO 80225-0046 ph: (303) 236-1003 [log in to unmask] USGS Libraries: http://library.usgs.gov Tutorials: http://tinyurl.com/lh3tmua Professional Page: http://profile.usgs.gov/ecwild ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~