Ecoregions of Central and South America, Levels I, II, III

Maps of South America - Nations Online Project

File:DC-DE-MD-PA-VA-WV Level IV ecoregions.pdf - Wikipedia

Greater Rockies & Mountain Forests (NA13)

Gulf Coast Network Ecosystems (U.S. National Park Service)

Visualize ecoregions as map background - Feature Requests - iNaturalist Community Forum

The FAO 2011 Ecozone map for North America has its basis in the

Ecoregions of Central and South America, Levels I, II, III

Ecoregions of the United States, Definition, Map & Examples

Ecoregions used in the National Aquatic Resource Surveys

Defining nutrient ecoregions for reference nitrogen and phosphorus concentrations in rivers from the major South American biomes - ScienceDirect

Ecoregions of the Conterminous United States: Evolution of a Hierarchical Spatial Framework

Climatic distributional shifts and refugia for North American ecoregions

Central American Mixed Forests (NT25)

Chapter 12: Central and South America Climate Change 2022: Impacts, Adaptation and Vulnerability