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SlideshowReport

Keystone organisms "كيستون الكائنات الحية‬‎"

Description
Keystone species: a species that has a particular strong or far-reaching impact

In an ecological community, removal of a keystone species will have a substantial ripple effects and will alter a large portion of the food web
Removal of wolves from many parts of North America

Effect of predatory seastar, Pisaster ochraceus, on intertidal organisms
Sea otters
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