Mass tree die-offs lead to disaster, and a Cal Poly professor is looking for answers.

Cobb’s research reaffirms that the large-scale die-offs seen with sudden oak death — a disease that’s killed millions of trees along the Northern California coast — and the bark beetle infestations in the Sierra Nevada that are turning huge swaths of pine trees brown, have been increasing in severity and frequency across the world.

http://www.sanluisobispo.com/news/local/environment/article195028789.html

Publicado el enero 18, 2018 02:09 TARDE por biohexx1