There are several data sets available pertaining to ecoregions and ecoregional assessments at The Nature Conservancy. If you have any questions please contact Jim Platt (

1) If you are looking to download spatial data delineating the The Nature Conservancy’s ecoregions and ecoregional assessments, they can be found at Scroll to the bottom to view or download this data.

2) If you just need a list of the ecoregions that TNC uses, you can find it at

3) Information about past ecoregional assessments that The Nature Conservancy (and some of our partners) have conducted can be accessed from the Ecoregional Assessment Status Tool (EAST): This includes the full reports from the assessments.

4) Information about the process of conducting ecoregional assessments can be found on the Conservation Gateway: