Browsing Journal of Range Management, Volume 25, Number 2 (March 1973) by Subjects
Now showing items 1-3 of 3
Duration of Seeded Stands on Terraced Mountain Lands, Davis County, UtahThirty-seven species were seeded experimentally in northern Utah on 14 areas on depleted and terraced mountainous rangelands from 1936 to 1939. Seventeen species had fair to excellent 3-year-old stands. Most stands decreased; and in 1971 only smooth brome, tall oatgrass, intermediate wheatgrass, and red fescue have fair to excellent stands. Smooth brome spread slowly by rhizomes and usually formed a dense sod. Tall oatgrass spread by seed with a poor to good stand on ten times the original seeded area. Intermediate wheatgrass has spread by rhizomes and forms a good stand on the large plot where it was seeded in 1941. Red fescue did well on favorable sites but was not tested under typical conditions. Native grasses, forbs, shrubs, and trees have reinvaded the seeded areas.
Influence of Chaining Pinyon-Juniper on Net Radiation, Solar Radiation and WindNet and solar radiation, and wind were measured during parts of 1968 and 1969 on a pinyon-juniper site in southwestern Utah. Treatments were chaining-with-debris windrowed, chaining-with-debris-in-place, and undisturbed woodland. Net radiation on the chain-windrow treatment and chain-debris treatment averaged 71 and 91%, respectively, of that measured on undisturbed woodland. Albedo values averaged 13 and 12% for the 2 years on woodland plots, 21 and 19% on the chain-windrow treatment, and 13 and 14% on the chain-debris treatment. Roughly 3 miles of wind (as measured at approximately mid-canopy height) occurred on the chained treatments for every 1 mile measured in the woodland.
Small Mammals Increase on Recently Cleared and Seeded Juniper RangelandSmall mammal numbers were studied by snap trapping on six areas in Utah where juniper range had been cleared and seeded. On one area, which was trapped both before and for the first 3 years after treatment, numbers of deer mice (Peromyscus maniculatus) and pocket mice (Perognathus parvus) increased greatly in the first 2 years following treatment, then declined sharply to a level which was still above that before treatment. On two areas which were trapped only the first 2 years after treatment, many more small mammals were caught in the second year. Older seedings had about the same number of small mammals as did untreated juniper. Small mammals showed a clear preference for windrowed slash. This was especially true of deer mice and long-tailed voles (Microtus longicaudus).