Spies, Thomas A.; Duncan, Sally L.; Johnson, K. Norman; Swanson, Frederick J.; Lach, Denise. 2009. Conserving old growth in a new world. In: Spies, Thomas A.; Duncan, Sally L., eds. Old growth in a new world: a Pacific Northwest icon reexamined. Washington, DC: Covelo, CA: Island Press: 313-326. Chapter 27.