This publication FroM Environment CANADA is used in “land use planning, restoration projects and land securement initiatives across the multiple jurisdictions and has become a standard conservation biology and landscape ecology reference.”
Some of this publication’s key recommendations …
30% to 50% minimum forest cover,
the greater of 10% wetland cover per watershed or 40% of historic wetland cover,
less than 10% impervious cover in a watershed
average grassland patches sizes of greater than or equal to 50 hectares.