A sea otter swimming in the water with a leaf in its mouth.

Large diversity in new keystones list challenges predominant belief

New research on the planet’s ‘Keystone Species’ has revealed a staggering and unappreciated diversity in what kind of animal fits this distinguished label. Defined as those species that have enormous influence on ecosystems relative to their abundance, the stereotypical Keystone Species that frequently come to mind are large predatory mammals, like the recolonizing wolves that changed the…



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