Boysag Point: A Relict Area on the North Rim of Grand Canyon in Arizona

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Abstract
Species, line intercept, herbage production, and tree-count studies were made from 1959 to 1964 on an isolated, 70-acre, rarely-grazed and unburned fragment of the Kaibab Plateau. Conditions were compared to an adjacent, heavily-grazed Mainland area. The Pint had 88 species, the Mainland 38. Sagebrushes (Artemisia bigelovii and A. tridentata) were the dominant species on both areas, making up 37 and 82% of the plant cover, respectively. Trees and shrubs made up 60% of the cover on the Point and 80% on the Mainland; perennial grasses 36 and 6% respectively; annual grasses and forbs 4% on each area. Average annual herbage production was 413 and 287 lb., respectively. Differences were attributed to grazing effects.