Here I will give various pages form Boyd (2003). I have not searched for updates to the laws.
Endangered species- Species at Risk Act- "no mechanism to allow the public to enforce the law when the government is unwilling or unable to do so." ---"modest improvement over the status quo of not having any legislation" - "weaker than either US or Mexican endangered species laws"---
See Boyd, eg p.45, for the complex web invovling fisheries, forestry, dams, etc and difficulty of regulation based on split or shared Federal and Provincial jurisdiction , often leading to the result that the environment loses, development wins- as an example-no setback for clearcut logging, destroying small streams, based on the fact that small streams contain no commercial fish, and thus Federal laws do not apply, but Provincial laws do apply- thus leaving small streams unprotected.