USDA Forest Service
 

Pacific Southwest Research Station

 

Pacific Southwest Research Station
800 Buchanan Street
Albany, CA 94710-0011

(510) 559-6300

United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.

Publications and Products

Order a printed copy
of this publication.

Research Paper

Title: Ohia forest decline: its spread and severity in Hawaii

Author: Petteys, Edwin Q. P.; Burgan, Robert E.; Nelson, Robert E.;

Date: 1975

Source: Res. Pap. PSW-105. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 11 p

Station ID: RP-PSW-105

Description: Ohia forest decline–its severity and rate of spread–was studied by aerial photographic techniques on a 197,000-acre (80,000-ha) portion of the island of Hawaii. In 1954, only 300 acres (121 ha) showed signs of severe decline; by 1972, the acreage of severely affected forest had increased to 85,200 acres (34,480 ha). Rate of decline and current severity were related to mean annual precipitation and to elevation. The epidemic is continuing. Some forests on other Hawaiian islands also display decline symptoms.

Key Words: ohia decline, forest diseases, epidemics, aerial photography, Hawaii

View and Print this Publication (869 KB)

Citation

Petteys, Edwin Q. P.; Burgan, Robert E.; Nelson, Robert E.;  1975.  Ohia forest decline: its spread and severity in Hawaii  Res. Pap. PSW-105. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 11 p.

Last Modified: Nov 18, 2013 12:46:00 PM