Keystone species play a critical role in maintaining the structure of an ecological community and have an impact greater than expected. For example, the extinction of wolves in Yellowstone led to the disappearance of beavers. Keystone species add complexity to understanding food webs and relationships between organisms in an ecosystem.

5. Keystone species: a species that plays a critical role in maintaining the structure of an ecological community and whose impact on the community is greater than would be expected

6. Keystone species: a species that plays a critical role in maintaining the structure of an ecological community and whose impact on the community is greater than would be expected example – the extinction of wolves in Yellowstone led to the disappearance of beavers in Yellowstone

7. Keystone species add another layer of complexity to food webs and our attempts to understand the interrelationships between the organisms in an ecosystem.

8. the end