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
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USGS Libraries: http://library.usgs.gov
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Professional Page: http://profile.usgs.gov/ecwild
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