University of Delaware entomologist Doug Tallamy’s research has identified “keystone” plant species that make up the foundation of many U.S. ecosystems by producing food for native insects ...

Sea otters are keystone species in kelp forests. Kelp forests rely on the top-down pressure sea otters exert via predation on ...

British Columbia was a classic example of the domino effect, which ecologists call a trophic cascade, that comes with reintroducing a keystone species: otters eat urchins, so kelp can regrow.

University of Delaware entomologist Doug Tallamy's research has identified “keystone” plant species that make up the foundation of many U.S. ecosystems by producing food for native insects ...

Oaks, Asters and 6 Other 'Keystone' Native Species to Plant for Biodiversity University of Delaware entomologist Doug Tallamy's research has identified “keystone” plant species that make up ...

University of Delaware entomologist Doug Tallamy's research has identified “keystone” plant species that make up the foundation of many U.S. ecosystems by producing food for native insects ...