Treesearch

On January 8 and 9, 1980, a 2-day meeting of U.S. Forest Service American chestnut cooperators was held at Pipestem State Park, Pipestem, West Virginia. A total of 43 talks were given a t this meeting. All speakers provided short abstracts of their talks; these abstracts are presented here.

A study of commercial, wood-fired evaporators revealed that normal expected thermal efficiencies are between 35 and 50 percent. The moisture content and quality of wood fuels used and the design and method of firing the evaporator are critical in determining evaporator efficiency and the economic implications of using wood.

Water use by an urban tree was measured lysimetrically while water use by the same tree at a non-urban site was estimated by a model. Comparison of the measured and estimated water use showed that the urban honeylocust (Gleditsia triacanthos f. inermis) required an average of 155 percent of the water needed by the same tree surrounded on a homogeneous vegetated surface. Measured water use ranged from 60 to 303 percent of estimated water use. Advected energy from surrounding urban sites was the apparent cause of the excess transpiration. A water requirement this much greater in the city...

Decayed wood associated with Armillaria mellea was compartmentalized according to the CODIT (Compartmentalization Of Decay In Trees) model. Compartmentalization in the sapwood began after the tree walled off the area of dead cambium associated with the inflection of the fungus. The fungus spread into dying sapwood beneath and beyond the area of killed cambium, but the fungus did not spread radially outward into new wood that formed.

The findings of a 1980 census of commercial camping enterprises in New Hampshire are presented, including the growth of commercial camping enterprises during the period 1964 to 1980, campground characteristics, services and facilities, and the average costs and returns of operating a campground. This report represents the third census of the New Hampshire campground industry. The data presented reflect the 1979 calendar year and are based on a survey of 138 campgrounds conducted by the U.S. Forest Service in cooperation with the campground owners of New Hampshire.