U.S.D.A. Forest Service Research Note RM.
Forest Service, U.S. Department of Agriculture, Rocky Mountain Forest and Range Experiment Station, 1974 - Forests and forestry
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acre amount applied Arizona aspen avalanche average bark base beetle Black border canopy central collected Collins Colo Colorado cooperation cover Creek cylinders deer density DEPARTMENT depth determine developed diameter differences effective estimated EXPERIMENT factor feet fertilizer Figure flow FOREST SERVICE four frost heaving gage germination grass ground growth height important inches increased indicate infested insects located maintained material Mean measured method Mountain Mountain Forest Note percent period placed plant plots ponderosa pine posts pupae Range RANGE EXPERIMENT recorded reduced removed RESEARCH Rocky root sample scale season seedlings seeds Serv slope snow soil species spoil spruce squirrel stand Station strip suckers summer surface temperature tion traps treated treatment trees Unit University values warning watersheds winter yield