• Effectiveness of Antelope Pass Structures in Restriction of Livestock

      Gross, B. D.; Holechek, J. L.; Hallford, D.; Pieper, R. D. (Society for Range Management, 1983-01-01)
      A study was conducted to test the restrictive efficiency of 5 antelope pass structures upon cattle and sheep. Cattle and sheep were placed under 3 stress situations, female water, female young, and male-female, to test fence restrictive ability of individual antelope pass structures. No single structure restricted all classes and types of livestock. Depending upon livestock class and type, proper selection and use of antelope pass structure will restrict livestock movement without severely restricting antelope movement. An 81.3-cm (32 in) net-wire fence most effectively restricted sheep, but cattle were most effectively restricted by a 2.4-m × 1.5-m (8 ft × 5 ft) horizontal grill. It appears that a horizontal grill within a fence line with certain modifications and placement constraints will effectively restrict sheep and cattle but permit antelope passage.
    • Vegetational Evaluation of Pinyon-Juniper Cabling in South-Central New Mexico

      Rippel, P.; Pieper, R. D.; Lymbery, G. A. (Society for Range Management, 1983-01-01)
      Vegetational comparisons were made between areas where pinyon-juniper vegetation had been cabled in 1954 and uncabled areas. Total tree density on the cabled areas was about 80% of that on control areas. Basal area and canopy cover of trees was substantially lower on control areas than on cabled areas. Rhus trilobata and Xanthocephalum sarothrae apparently were the only shrubby species that responded to the cabling treatment. Basal cover of Bouteloua gracilis, Eragrostis erosa, and Muhlenbergia pauciflora was significantly greater on the control areas than on the cabled area.