Oak trees are a keystone species, - The Morton Arboretum

Oak trees are a keystone species, critical to the survival of entire ecosystems. As oaks decline, so can 500 species of birds, animals, and insects that

Chicago's Once-Dominant Oak Trees Are in Trouble. Here's How to Help, Chicago News

Morton Arboretum leads discovery of oak tree, thought to be extinct

Illinois Issues: State's Oaks Squeezed Out By Other Species

Conservation of threatened oaks in Mesoamerica - Fondation Franklinia

Oak trees are a keystone species, - The Morton Arboretum

New Assessment Finds that Nearly One-Fourth of Oak Species in the US are of Conservation Concern – APGA

Restoration of Illinois' oak savannas tries to reach new heights

Oaks of the Americas Conservation Network

Global Conservation Consortium for Oak (GCCO)

How Oak Trees Evolved to Rule the Forests of the Northern Hemisphere

UC Davis Arboretum and Public Garden - Program for October 22