https://www.epa.gov/eco-research/ecoregions-north-america
Ecoregions of North America | US EPA
Information and downloadable maps and datasets for ecoregions of North America, which are areas of general similarity in the type, quality, and quantity of...
of north americaus epaecoregions
https://www.feow.org/
Freshwater Ecoregions of the World
A global biogeographical regionalization of the Earth's freshwater biodiversity
freshwater ecoregionsof theworld
https://www.resolve.ngo/projects/ecoregions-world
Ecoregions of the World
of theecoregionsworld