Ecozones of Canada

Though this framework originally included 5 marine ecozones, these were never formally adopted by Statistics Canada.

In 1991, a collaborative project was undertaken by a number of federal agencies in cooperation with provincial and territorial governments to establish a common ecological framework for Canada.

A second report published in 1999 established the 53 ecoprovinces of Canada in accordance with the requirements of the Commission for Environmental Cooperation (CEC).

[6] In 2010, Environment Canada published the report Canadian Biodiversity: Ecosystem Status and Trends 2010 utilizing a modified hierarchy called "Ecozone+".

Major modifications included adjustments to terrestrial boundaries to reflect improvements in ground truthing, the combining of three Arctic ecozones, and the addition of two ecoprovinces (Western Interior Basin and Newfoundland Boreal) and nine marine ecosystem-based units.