Ministry of Environment


Terrestrial & Predictive Ecosystem Mapping Home

Ecosystem mapping is the stratification of a landscape into map units, according to a combination of ecological features, primarily climate, physiography, surficial material, bedrock geology, soil, and vegetation. Common scales of ecological mapping are 1:20 000 to 1:50 000, though larger scales such as 1:10 000 or 1:5000 may be used depending on project objectives.

This site provides information specific to the Resources Information Standards Committee (RISC) standards for Predictive Ecosystem Mapping (PEM) and Terrestrial Ecosystem Mapping (TEM).

Terrestrial Ecosystem Mapping is a methodology which requires direct air photo interpretation of ecosystem attributes by a mapper(s). This approach is typically used at larger scales where more detailed information is required. For situations where less detail is preferred (i.e. smaller scales), the Predictive Ecosystem Mapping approach is used. PEM is a modeled approach to ecosystem mapping, whereby existing knowledge of ecosystem attributes and relationships are used to predict ecosystem representation in the landscape. Both of these approaches to mapping provide a framework that integrates the biotic and abiotic ecosystem components of the landscape, from which valuable management interpretations can be made.

Many ecosystem mapping projects are funded through the Forest Investment Account (FIA). All FIA funded projects must be completed in accordance with the applicable provincial RISC standards. Please see the Forest Investment Account website for more information.

If you have any questions or suggestions contact the PEM/TEM Custodian.