Limnology and Oceanography, Vol. 55, No. 1 (Jan., 2010), pp. 403-419 (17 pages) Aquatic prey species respond to predators with fast (developmental) and slow (selective) feedbacks. Natural selection is ...

A keystone in an arch's crown secures the other stones in place. Keystone species play the same role in many ecological communities by maintaining the structure and integrity of the community.