A Do-It-Yourself worksheet for conducting a health exam of your trees using pictures and protocol: here

A scientific paper, "Bryophytes and soil acidification effects on trees: the case of sudden oak death" by L. Klinger: here 

A scientific paper, "Examining the relationship between fire history and sudden oak death patterns: a case study in Sonoma County" by M. Moritz and D. Odion: here

A recent work on how the native people tended trees in the book "Unlearning the Language of Conquest", chapter 6 by L. Klinger: here

A summary of the problem and solutions around oak decline in Big Sur: here

A friendly description of the oak decline problem in California with interesting parallels to human health: here

Numerous articles and testimonials describing effects of Azomite trace minerals on trees and vines: here

A recent popular article: "Minerals for aging soils" by L. Klinger: here

Information on Azomite soil minerals: here

Information on Arboright limewash: here

Remineralize the Earth: here

Information on EcoLogic Landscaping: here