Canadian environmental sustainability indicators : Canadian species index. : En4-311/2026E-PDF

"Vertebrate wildlife (animals with a spine) is one of the most visible and well-studied aspects of biodiversity. The 2024 Living Planet Index, which tracks populations of vertebrate species, indicates an average global decline of 73% in the relative abundance of monitored wildlife populations since 1970. This is an average annual decline of 2.6%. The Canadian species index uses similar methods to the Living Planet Index, but it is based on populations of vertebrate species regularly occurring in Canada. It shows how the average population abundance of monitored vertebrate species has changed since 1970. The index is an "average of trends", rather than a measure of change in the total number of animals: each species, whether it is common or rare, has the same effect on the index. This, in turn, provides an integrated measure of the condition of our environment. …"--Page 5.

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