Juniperus Subject Bibliography by Keywords
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Juniperus Subject Bibliography by Keywords Juniperus (201) 1. Admasu E.; Thirgood S. J.; Bekele A., and Karen Laurenson M. Spatial ecology of golden jackal in farmland in the Ethiopian Highlands. African Journal of Ecology. 2004; 42(2):144-152. Keywords: Juniperus/ jackal/ Canis aureus/ Ethiopia Abstract: The spatial ecology of golden jackal Canis aureus was studied on farmland adjacent to the Bale Mountains National Park in southern Ethiopia during 1998-2000. Three adult and four subadult jackals were captured in leghold traps and radiotagged. The range size of the adult jackals varied from 7.9 to 48.2 km<sup>2</sup> and the subadults from 24.2 to 64.8 km<sup>2</sup>. These ranges are the largest recorded for this species. Range overlap of the tagged jackals averaged 54%, which, in conjunction with observations of associations between individuals, suggested that all the tagged jackals belonged to one social group. Tagged jackals were observed alone on 87% of occasions despite the extensive overlap in individual ranges. Pairs consisting of a male and female were the most commonly observed group and larger groups were seen on only five occasions. Jackals in this population appeared less gregarious than observed elsewhere. The jackals used all the habitats available to them, particularly at night when they foraged in Artemesia and Hypericum bush and farmland. During the day they were more frequently found in Hagenia and Juniper woodland and their diurnal resting sites were characterized by thick cover. This is the first detailed study of golden jackals in a human- modified landscape in Africa and further demonstrates the flexibility in behaviour and ecology exhibited by this species throughout its range. 2. Aldon E. F. and Springfield H. W. The southwestern Pinyon-Juniper ecosystem: a bibliography. USDA Forest Service General Technical Report, Rocky Mountain Forest and Range Experiment Station. (RM-4). 1973; RM- 4(II):20 pp. Keywords: Juniperus/ Pinus/ ecosytem/ silvics/ management/ wildlife/ rangeland/ insects/ diseases Abstract: Includes references to the end of 1972 relevant to the Pinyon/Juniper woodlands of the south-western USA arranged by subject (without cross-references): ecological investigations, silvics and management aspects, product utilization, range characteristics and wildlife values, water yield and sediment, and insects and diseases. 3. Anderson J. J. and Cobb N. S. Tree cover discrimination in panchromatic aerial imagery of pinyon-juniper woodlands. PEandRS, Photogrammetric Engineering and- Remote Sensing. 2004; 70(9):1063-1068. Keywords: Juniperus/ pinyon / Arizona/ aerial photography/ canopy/ photointerpretation. Abstract: Responding to an increasing interest in studying vegetation changes over time, we review current methods of processing black and white digital aerial photographs in order to classify tree cover in pinyon- juniper woodlands in northern Arizona, USA. Besides applying commonly used clustering and supervised maximum-likelihood methods, we have developed a new classifier, nearest edge thresholding, which is unsupervised and based on the principals of edge detection and density slicing. Comparison of the three methods' abilities to predict field values at plot scales of 100 to 900 m2 shows this new method is better or comparable to others at all scales, can be easily applied to digital imagery, and has high correspondence with ground-truthed field values of tree cover. 4. Anonymous 2. Papers at a conference on the problem of the restoration and development of the Juniper forests of Central Asia, 15-22 July 1970. Materially soveshchaniya po problem vosstanovleniya i razvitiya archovykh lesov Srednei Azii, 15-22 iyulya 1970 g. Materialy Soveshchaniya Po Probleme Vosstanovleniya I Razvitiya Archovykh Lesov Srednei Azii, 15-22 Iyulya 1970 G. 1972. 181. 1972; 181 pp. Keywords: Juniperus/ biology/ regeneration/ restoration/ Central Asia Abstract: A collection of 23 papers dealing with various aspects of biology and regeneration of Juniperus spp., the condition of the Juniper forests of Kirghizia, Uzbekistan, Tadzhikistan, Azerbaijan and Turkmenia, and measures for their preservation and improvement. 5. Arnold W.; Bosch B., and Schmid H. Present condition and objectives for the conservation of the juniper heathlands of the Swabian Mountains. Zustand und Zielvorstellungen fur die Erhaltung der Wacholderheiden auf der Schwabischen Alb. Forstwissenschaftliches Centralblatt. 1982; 101(5):311-346. Keywords: Juniperus/ West Germany/ conservation/ heathlands Abstract: The juniper heathlands on the Swabian Mountains, W. Germany, are endangered, as sheep grazing on the land has declined, and forest cover is encroaching. A study by the Tubingen regional office of the Baden-Wurttemberg forest service is presented. Six stand types are distinguished, and the functions of the heathland are described. Recommendations are made for the preservation of some of the remaining heathland, and of examples of the successional stages, from open heathland to forest pasture. 6. Austin, D D Reprint author. Plant community changes within a mature pinyon- juniper woodland. Great Basin Naturalist. 1987; 47(1):96-99. Keywords: Juniperus/ pinyon-juniper woodland/ community/ plant/ composition Abstract: Vegetal composition was determined during 1974 and 1984 using 60 permanent 50 m2 plots within a mature pinyon-juniper community in northeastern Utah [USA]. Results indicated that not only was there little significant change in community composition, but with many species frequency and density remained nearly the same during the decade 7. Badenhop, M B. Effects of changes in selected factor prices on the cost of growing pfitzer junipers. Tennessee Farm and Home Science. 1979; 10920-21. Keywords: Juniperus/ pfitzer juniper/ cost analysis / budgets Abstract: Enterprise budgets showing the inputs required and costs for producing selected woody ornamentals have been developed under the S.103 regional research project. This paper shows the effect of changes in factor prices (land, capital and labor) on plant cost. It is illustrated by a comparative cost analysis for growing pfitzer junipers using partial budgeting. Changes in factor prices on total cost per saleable plant are detailed. Technical coefficients were held constant and factor prices were varied separately. 8. Bader, Nicholas E. Pollen analysis of death valley sediments deposited between 166 and 114 ka. Palynology. 2000; 2449-61. Keywords: Juniperus/ palynomorph/ fossil/ pollen/ Quercus/ Chemopodiaceae/ Amaranthus/ Ambrosia/ Death Valley Abstract: Salt Core DV93-1, from Badwater Basin in California's Death Valley, is a nearly complete sedimentary record of mud and evaporite deposits spanning the past 192 ka. Fossil palynomorph assemblages from core depths of 151.8 m (ca. 166 ka) to 103.5 m (ca. 114 ka) have been analyzed as part of a larger study which will eventually include all of core DV93-1. The palynological analysis discussed here reveals four pollen zones between 151.8 m and 103.5 m. Zone 1, the "Cheno-Am" zone (151.8 m to 143.5 m depth, 166-154 ka), has high percentages of Chenopodiaceae/Amaranthus (Cheno-Am) pollen, and is correlative with the end of marine Oxygen Isotope Stage (OIS) 7. Zone 2, the juniper zone (143.5 m to 117.3 m, 154-124 ka), correlates with OIS 6, as evidenced by high percentages of juniper (Cupressaceae) pollen and low percentages of Ambrosia pollen. Equivalent pollen assemblages are found at higher elevations in Death Valley today, where temperatures are 11 º C cooler and rainfall is eight times greater. At the top of Zone 2 (124 ka), a simultaneous drop in juniper and increase in oak (Quercus) pollen occurs, followed by a replacement of Artemisia with Ambrosia in Zone 3, the oak zone. This event corresponds to warming associated with Termination II. The estimated age of this warming event is in agreement with the Termination II event visible in the pollen record from nearby Owens Lake (Litwin et al., 1997). Zone 4, the Asteraceae zone (108.8 m to 103.5 m, 119-115 ka), contains higher percentages of Asteraceae and Cheno-Am pollen, indicating further warming during this time. 9. Baker, M. B. Jr. Changes in streamflow in an herbicide-treated juniper watershed in Arizona. Hydrology and Water Resources in Arizona and the Southwest. 1982; 1219-25. Keywords: Juniperus/ soil water balance/ deforestation/ crops. Abstract: A 147-ha juniper watershed in north-central Arizona was sprayed with a herbicide mixture to kill all overstory vegetation. After the area was sprayed, annual water yield increased significantly when flow was greater than 12 mm. The ratio of mean annual quick flow to event flow prior to treatment was 0.88 and remained essentially the same after treatment. The herbicide treatment reduced evapotranspiration losses and increased water yield by killing the overstory trees and leaving them in place. These dead trees provided some shade and wind resistance and created a microclimate that reduced evaporation and enabled the soil below 30 cm to remain above its soil moisture wilting point. Although mean annual water yield increased by 27% (6 mm, 8-year mean), this increase may not be practical from a management view point. The amount of treated acreage will depend on the demand for water and on the value of water in the market place. The area treated will also be constrained by consideration of other resource values and desires of the public. 10. Baker, W. L. and Shinneman, D. J. Fire and restoration of pinon-juniper woodlands in the western