Humans are a keystone species

Keystone species, Predator-prey relationships, Ecosystem balance, Biodiversity

Keystone Species - Sharks

Keystone Species 101

Acadia's North American Beaver: The Ultimate Keystone Species (U.S. National Park Service)

The Beaver's Keystone Activities – Mousam Way Land Trust

Keystone Species and Their Role in Ecosystems

Do you know your keystone - Bush Heritage Australia

Keystone Species: Animals With Critical Roles

At Home with the Beaver: The Story of a Keystone Species: Patent, Dorothy Hinshaw, Runtz, Michael: 9781970039009: : Books

Science of…Keystone Species Outdoor Nebraska Nebraska Game and Parks Outdoor Calendar