Commission for Environmental Cooperation (CEC) Ecological Regions of North America - Level III : Sonoran Desert

This dataset depicts the Level III ecological regions of North America,

as compiled by the Commission for Environmental Cooperation (CEC).

These draft files of of Level I, II, and III ecological regions of North

America are an update and revision of files developed by Canada, the

United States, and Mexico in the late 1990's in a cooperative project

for the Commission for Environmental Cooperation (CEC 1997). The CEC was

created under the North American Agreement on Environmental Cooperation

(NAAEC) to address regional environmental concerns, help prevent

potential trade and environmental conflicts and promote the effective

enforcement of environmental law. The Agreement complements the

environmental provisions established in the North American Free Trade

Agreement (NAFTA). These revised ecological regions were developed in a

meeting between representatives of the three nations and CEC in April

2006 in Newport, Oregon. They are considered draft and subject to

further refinements.





The citation for the report describing these ecological regions is:

Commission for Environmental Cooperation. 1997. Ecological regions of

North America: toward a common perspective. Commission for Environmental

Cooperation, Montreal, Quebec, Canada. 71pp.