file:///C|/Documents%20and%20Settings/ezio/Desktop/preparazione%20sit...20materiale/definitivi%20db/commiphora/studi%20inglese/commiphora.htm This message contains search results from the National Center for Biotechnology Information ( NCBI) at the U.S. National Library of Medicine ( NLM). Do not reply directly to this message. Sender's message: commiphora Sent on Tuesday, 2006 Dec 05 GMT Search commiphora Entrez PubMed Results Items 1 - 169 of 169 1: J Environ Manage. 2006 Nov 30; [Epub ahead of print] Related Articles, Books Rangeland dynamics of southern Ethiopia: (2). Assessment of woody vegetation structure in relation to land use and distance from water in semi-arid Borana rangelands. Tefera S, Snyman HA, Smit GN. Department of Animal, Wildlife and Grassland Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa. The structure and advancement of woody vegetation was studied in a semi-arid rangeland of southern Ethiopia under three land-use systems (communal land, a government ranch and a traditional grazing reserve enclosure) and along a distance gradient (near, middle and far) from water sources. A total of 54 woody plant species were identified. Based on the subjective opinions of the pastoralists, 85% of the identified woody plants have forage values to livestock. Cadaba farinsoa, Ormocarpum trichocarpum, Rhus natalensis, Acacia brevispica, Cordia gharaf and Hibiscus sparseaculeatus were reported to have fair to good palatability. Tree equivalent (TE) density of all woody plants combined was greater (P<0.01) in the government ranch (1) 188TEha (-1)) and the communal land (1083TEha(-1)) than in the traditional grazing reserve (419TEha(- 1)), whereas this did not vary significantly (P>0.05) along the distance gradient from water. The most important encroaching woody plant species in the study areas were in descending order: Commiphora africana, Acacia drepanolobium, A. brevispica, Acacia. tortilis, Grewia tembensis and Lannea floccosa. The density of individual encroaching woody plant species along the distance gradient from water was not consistent. All encroaching woody species had the highest TE density in the communal land. The prevalence of these species followed the pattern of intensity of use within the communal grazing area. Most of the woody species had the highest abundance in the height class >0-2m regardless of land use and distance gradient from water. file:///C|/Documents%20and%20Settings/ezio/Desktop/prep...finitivi%20db/commiphora/studi%20inglese/commiphora.htm (1 of 98)04/01/2007 10.48.38