Improving estimates of wilderness use from mandatory travel permits
North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1974 - Nature - 7 pages
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1971 User group 2SE Number Number 2SE Overnight 95 percent access points Boundary Waters Canoe BWCA Trip BWCA user groups campground or resort canoeists Overnight motorboaters classified compliance rate confidence limits cross classifications Daytime canoeists staying Daytime motorboaters staying Daytime visitors ESTIMATES OF WILDERNESS four user characteristics Group Characteristics Related group leader groups in sample groups table groups with mandatory groups with permits groups without permits home Daytime improve estimates Individual expansion factors length of stay Lucas mandatory travel permit mode of travel Number Number Percent number of groups number of visitor Number Percent 2SE Organizational groups Overnight motorboaters Daytime paddle and motor pansion factor party leader Percent 2SE Number permit by mode permit compliance permit data permit in sample permit Number Number permit requirement primary mode rates of compliance Schreuder self-registration seven BWCA user standard errors stay overnight staying at home study User group Total visitor groups Waters Canoe Area