Скачать с ютуб Restoration Research of the American Chestnut (Part 1 Intro) в хорошем качестве

Restoration Research of the American Chestnut (Part 1 Intro)

The American chestnut was once a common and abundant tree species that occupied 200 million acres in the eastern hardwood forests of North America. The species had a cultural significance and was a keystone species, providing wildlife with food and habitat sources. Two non-native pathogens led to the chestnut's extirpation in the 20th century, but efforts are underway to conserve and restore this iconic tree.