14 grasslands

14 grasslands - OUTLINE: RANGE MANAGEMENT 1. FIGURES ON USA...

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Unformatted text preview: OUTLINE: RANGE MANAGEMENT 1. FIGURES ON USA GRASSLANDS. 2. GRAZING ON PUBLIC LANDS & GRAZING LEASES. 3. ENVIRONMENTAL COSTS. 4. SOLUTIONS. Suggested Readings: Curtain, C. 2002. Livestock grazing, rest, and restoration in arid landscapes. Conservation Biology 16:840-2. Herring, H. 2004. Fair trade. Nature Conservancy 54:20-21. [grassland banking] CONTROVERSY 2 TYPES OF TIMBER HARVEST: Clearcuts Partial cuts: shelterwood Seed tree Selection cut Shelterwood cut some trees left behind to provide shade. SELECTIVE CUT: ________________ ________________ EXAMPLES: ________________ ________________ ________________ Single-tree selective cut BEFORE AFTER CONTROVERSY 2: EVEN-AGED VERSUS UNEVEN- AGED FORESTS. CLEARCUT, SHELTERWOOD OR SEED-TREE HARVEST RESULTS IN ___________________________ WHAT KIND OF HARVEST SHOULD BE USED? ____________________________ Natural lodgepole pine forests in Yellowstone National Park natural even-aged forest NATIONAL RANGELANDS...
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14 grasslands - OUTLINE: RANGE MANAGEMENT 1. FIGURES ON USA...

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