Efforts to conserve habitat of the northern spotted owl in the Pacific Northwest have placed softwood timber supplies under a great deal of pressure and driven up the price of softwood lumber. Hardwoods could meet some of the demand for products that previously have been made from softwood species. Research in this field has been under way for some time; more is needed in some areas.
Wiedenbeck, Janice K.; Araman, Philip A. 1994. Can eastern hardwoods offset timber cutbacks . Wood Technology. 121(3): 25-26.