• Native Grass Leaps to the Sun

      Farmer, Frank (Society for Range Management, 1979-06-01)
    • Native or seeded rangeland for cows with high or low milk production

      Adams, D. C.; Staigmiller, R. B.; Knapp, B. W.; Lamb, J. B. (Society for Range Management, 1993-11-01)
      Multiparous cows (n = 91, 1986; n = 92, 1987) were selected from 2 populations to obtain cattle with high and low milk production. After March-April calving, high and low producing cows grazed either native range (treatment 1) or seeded range (treatment 2) until weaning in September. Seeded range included paddocks of crested wheatgrass (Agropyron desertorum, Fisch. ex [Link]Schult), contour furrowed native range interseeded with "Ladak" alfalfa (Medicago Sativa L.), and Russian wildrye grass Psathrostachys juncea[Fisch.]Nevski.). In treatment 2, crested wheatgrass was grazed mid-April to 17 June, followed by contour furrowed rangeland 18 June to 5 August, and ended with Russian wildrye 6 August to weaning (mid-September). Data were analyzed as a split plot with treatment and year in the main plot and cow type in the subplot. Number of cows exhibiting estrus before the beginning of the breeding season and fall pregnancy rate were not influenced (P > 0.05) by range treatment. Twelve-hour milk production during May, June, August, and September ranged from 11.3 to 6.8 kg and 7.6 to 3.9 kg for high and low producing cows, respectively. Cows with high milk production lost body condition during and after the breeding season, whereas cows with low milk production maintained body condition during the same period. Live weight gain of calves was greater (P < 0.01) for cows with high production than cows with low production but was not affected (P > 0.05) by range treatment. We concluded that native and seeded ranges were of similar nutritive value for cows with high and low milk production and that cows with high milk production may have greater nutrient requirements during late summer-early fall than what was provided by native or seeded ranges. Protein may be the primary limiting nutrient in forages during the late summer for lactating cows grazing Northern Great Plains range.
    • Native Plant Growth and Seedling Establishment in Soils Influenced by Bromus tectorum

      Rowe, Helen I.; Brown, Cynthia S. (Society for Range Management, 2008-11-01)
      The invasion of 40 million hectares of the American West by cheatgrass (Bromus tectorum L.) has caused widespread modifications in the vegetation of semi-arid ecosystems and increased the frequency of fires. In addition to well-understood mechanisms by which cheatgrass gains competitive advantage, it has been implicated in reducing arbuscular mycorrhizal fungi (AMF) abundance and taxa diversity. We evaluated this possibility at a high elevation site in a two-pronged approach. To test whether cheatgrass changed native AMF communities in ways that affected subsequent native plant growth, we grew cheatgrass and native plants in native soils and then planted native plants into these soils in a greenhouse experiment. We found that cheatgrass-influenced soils did not inhibit native plant growth or AMF sporulation or colonization. To test whether soils in cheatgrass-dominated areas inhibited establishment and growth of native plants, cheatgrass was removed and six seeding combinations were applied. We found that 14.02 +/- 1.7 seedlings m-2 established and perennial native plant cover increased fourfold over the three years of this study. Glyphosate reduced cheatgrass cover to less than 5% in the year it was applied but did not facilitate native plant establishment or growth compared with no glyphosate. We conclude that cheatgrass influence on the soil community does not appear to contribute to its invasion success in these high elevation soils. It appears that once cheatgrass is controlled on sites with sufficient native plant abundance, there may be few lingering effects to inhibit the natural reestablishment of native plant communities. 
    • Native Plants Poisonous to Humans

      Steger, R. E. (Society for Range Management, 1972-01-01)
    • Native Science: Understanding and Respecting Other Ways of Thinking

      Black Elk, Linda (Society for Range Management, 2016-12-01)
      On the Ground • Over generations, Native Americans have developed a timely and reliable knowledge of the land, its processes, and its management needs. This knowledge has been referred to as Native science. • Native science employs many concepts such as observation, background research, and experimentation familiar to non-Native researchers and recognizes the interconnectedness of science. Good rangeland management also requires recognition of interrelatedness. • If we are open to it, Native science can give us new ways of looking at the landscape and all that it has to offer in terms of chemical, physical, and ecological processes and communities.
    • Native Vegetation of Idaho

      Tisdale, E. W. (Society for Range Management, 1986-10-01)
    • Native Vegetation of Texas

      Landers, Roger Q. (Society for Range Management, 1987-10-01)
    • "Native" vs. "Exotic"—The Dilemma of Ecological Mine Waste Revegetation

      Bengson, Stuart A. (Society for Range Management, 1986-04-01)
    • Natural Establishment of Aspen from Seed on a Phosphate Mine Dump

      Williams, B. D.; Johnston, R. S. (Society for Range Management, 1984-11-01)
      The natural reproduction of aspen (Populus tremuloides Michx.) from seed was discovered on a phosphate mine dump in southeastern Idaho. Aspen seedlings were found growing on areas that were essentially bare except for scattered plantings of containerized shrubs and trees. Aspen survival and growth was monitored for 4 growing seasons. Seedling density varied from 2 to 10 per m2, seedling heights varied from 16 to 81 cm, and survival rate was 73% at the end of 4 growing seasons. No changes in the number of seedlings were noted after the second growing season.
    • Natural regeneration processes in big sagebrush (Artemisia tridentata)

      Schlaepfer, D. R.; Lauenroth, W. K.; Bradford, J. B. (Society for Range Management, 2014-07)
      Big sagebrush, Artemisia tridentata Nuttall (Asteraceae), is the dominant plant species of large portions of semiarid western North America. However, much of historical big sagebrush vegetation has been removed or modified. Thus, regeneration is recognized as an important component for land management. Limited knowledge about key regeneration processes, however, represents an obstacle to identifying successful management practices and to gaining greater insight into the consequences of increasing disturbance frequency and global change. Therefore, our objective is to synthesize knowledge about natural big sagebrush regeneration. We identified and characterized the controls of big sagebrush seed production, germination, and establishment. The largest knowledge gaps and associated research needs include quiescence and dormancy of embryos and seedlings; variation in seed production and germination percentages; wet-thermal time model of germination; responses to frost events (including freezing/thawing of soils), CO2 concentration, and nutrients in combination with water availability; suitability of microsite vs. site conditions; competitive ability as well as seedling growth responses; and differences among subspecies and ecoregions. Potential impacts of climate change on big sagebrush regeneration could include that temperature increases may not have a large direct influence on regeneration due to the broad temperature optimum for regeneration, whereas indirect effects could include selection for populations with less stringent seed dormancy. Drier conditions will have direct negative effects on germination and seedling survival and could also lead to lighter seeds, which lowers germination success further. The short seed dispersal distance of big sagebrush may limit its tracking of suitable climate; whereas, the low competitive ability of big sagebrush seedlings may limit successful competition with species that track climate. An improved understanding of the ecology of big sagebrush regeneration should benefit resource management activities and increase the ability of land managers to anticipate global change impacts. © 2014 The Society for Range Management.
    • Natural Regulation and Yellowstone National Park—Unanswered Questions

      Alt, Kurt; Frisina, Michael R. (Society for Range Management, 2000-10-01)
    • Natural Reproduction of Winterfat (Eurotia lanata) in New Mexico

      Woodmansee, R. G.; Potter, L. D. (Society for Range Management, 1971-01-01)
      In situ ecological factors influencing the natural reproduction of the important Western browse species winterfat (Eurotia lanata) were investigated in central and west-central New Mexico from summer 1967 to spring 1969. Seed of winterfat germinated in late winter and early spring on all slopes and in soils varying widely in origin and texture. Survival was greatest on disturbed soils which supported low vegetation that afforded some shelter but little shading for seedlings. The disturbed soils indicated greater moisture availability. Seedlings were tolerant to competition, and were often found in living clumps of grass. A comparison of vegetation on heavily grazed and protected ranges indicated winterfat was susceptible to heavy grazing, and reproduced when on protected or lightly grazed range dominated by low-growing grasses.
    • Natural Resources Conservation Workshop for Arizona Youth

      McReynolds, Kim (Society for Range Management, 2005-08-01)
    • Natural Resources Perspective of the Balanced Scorecard: Balance and Boundaries

      Kelly, Sean P.; Ravenscroft, Rob (Society for Range Management, 2007-04-01)
    • Natural Sources of Nitrogen and Phosphorous for Grass Growth

      Miles, A. D. (Society for Range Management, 1958-05-01)
    • Nature and Successional Status of Western Juniper Vegetation in Idaho

      Burkhardt, J. W.; Tisdale, E. W. (Society for Range Management, 1969-07-01)
      Western juniper invasion of sagebrush-bunchgrass vegetation in southwestern Idaho was verified. The invasion started about 1860 and is continuing at present. Juniper was found to be climax on rocky ridges and rimrocks where soil development is limited. Seral juniper stands were found on the deeper soils of valley slopes and bottoms. These sites were previously occupied by productive sagebrush-grass stands. It appears that juniper control would be more beneficial on invaded sites than on climax juniper sites.
    • Nature of Phytomer Growth in Blue Grama

      Stubbendieck, J.; Burzlaff, D. F. (Society for Range Management, 1971-03-01)
      The pattern and relative growth rates of the individual phytomers of blue grama were determined. A mature blue grama shoot from the site had an average of 13 complete phytomers. The first six phytomers appeared to be initiated in the growing season prior to the one in which the plant reached maturity. Internodal elongation of over 100 mm in a period of two weeks was not uncommon. In most instances the internodes did not elongate before the sheath and blade reached maximum length. The leaf of the last phytomer was initiated just prior to the middle of June. Mature sheath length varied from 15 mm in phytomer 13 to nearly 80 mm in phytomers 11 and 12. Blade length varied from 4 mm in phytomer 2 to 134 mm in phytomer 10.
    • Navajo Sheep and Goat Guarding Dogs: A New World Solution to the Coyote Problem

      Black, Hal L. (Society for Range Management, 1981-12-01)