The Keystone Predator Hypothesis

Under the keystone predator hypothesis, a predator severely limits the abundance of a competitively dominant prey species, allowing competitively subordinate species coexist in part of the habitat, maintaining the species richness, and the spatial patterns comprising the community. Now widely applied to both aquatic and terrestrial habitats, the hypothesis was based on the experimental findings of the Mytilus—Pisaster system. The removal of predacious sea star Pisaster precipitated the downward expansion of the mussel bed, which overgrew, shaded, and crushed the algae and sedentary invertebrates occupying the lower level. This result was the first operational definition of a keystone predator.

Was this article helpful?

0 0
Oplan Termites

Oplan Termites

You Might Start Missing Your Termites After Kickin'em Out. After All, They Have Been Your Roommates For Quite A While. Enraged With How The Termites Have Eaten Up Your Antique Furniture? Can't Wait To Have Them Exterminated Completely From The Face Of The Earth? Fret Not. We Will Tell You How To Get Rid Of Them From Your House At Least. If Not From The Face The Earth.

Get My Free Ebook

Post a comment