Excerpt from Visitor Characteristics, Attitudes, and Use Patterns in the Bob Marshall Wilderness Complex, 1970-82 Trends in the characteristics of wilderness use and users are harder to measure, requiring a visitor survey for most characteristics. Perhaps because of this diffi culty, these trends have been little studied. Only four related studies were found. One was based on repeat sur veys of visitors to the Allagash River in Maine (cieslinski Three surveys were conducted, but the first, in 1966, is not comparable with those in 1973 and 1975. Data for only eight variables were reported, and only use by large parties changed substantially, declin ing over the 2 years. Data from mandatory permits showed use more than doubling from 1966 to 1979, While parties became smaller and stays shorter. The second was a study of recreational use of the Rattlesnake area north of Missoula, mt, a National Forest area which was designated partly as a National Recreation Area and partly as wilderness in 1980 (corti and others Use measurements were made in 1977 and 1981. Total use declined but use of the wilderness grew moderately and groups became smaller. Question naire surveys were also conducted in 1978 and 1981. There were no changes in the distribution of male and female visitors, occupations, or education, and only a slight tendency for 1981 visitors to have less previous experience in the area than 197 8 visitors. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Soil and cambium temperatures must be known to ascertain certain effects of prescribed fires on trees. Thermocouple-based systems were devised for measuring soil and cambium temperatures during prescribed fires. The systems, which incorporate both commercially available and custom components, perform three basic functions: data collection, data retrieval, and data translation. Although the systems and procedures for using them were designed for research purposes, they could be adapted for monitoring operational prescribed fires.