Proceedings

acres æsthetic Africa agencies Alaska Arctic Wildlife Range basic bears bighorn biological Brooks Range California caribou changes communities complete conservation crop Dall sheep Darling David Brower ecological ecologist economic effects environment established example fire Fish flow game animals going grass habitat HOWARD ZAHNISER human hunting hydrologic important increase interest Island Katmai Kodiak Kodiak Island lakes LEONARD living moose Mount McKinley mountains mule deer National Forest National Monument National Park Service natural beauty ness numbers Olympic National Park organization plant and animal population present preservation problem Professor Cowles protection Rausch reason recreation Refuge region result River Rocky scientific scientists sheep Sierra Club soil species square miles STARKER LEOPOLD streams studies thing timber tion trees University valley vegetation water yield watershed wild lands wilderness areas winter wolf wolverine wolves