community impacts of prosopis juliflora invasion biogeographic and congeneric comparisons社区的影响prosopis juliflora入侵生物地理的和同类的比较.pdfVIP

Community Impacts of Prosopis juliflora Invasion: Biogeographic and Congeneric Comparisons 1 ´ 2 3 3 4 Rajwant Kaur , Wilfredo L. Gonzales , Luis Daniel Llambi , Pascual J. Soriano , Ragan M. Callaway , 4 5 1 Marnie E. Rout , Timothy J. Gallaher , Inderjit * 1 Department of Environmental Studies, Centre for Environmental Management of Degraded Ecosystems (CEMDE), University of Delhi, Delhi, India, 2 Laboratorio de ´ ´ ´ ´ Ecologıa Evolutiva, LID, Facultad de Ciencias y Filosofıa, Universidad Peruana Cayetano Heredia, Lima, Peru, 3 Instituto de Ciencias Ambientales y Ecologicas, Universidad ´ de Los Andes, La Hechicera, Merida, Venezuela, 4 Division of Biological Sciences, University of Montana, Missoula, Montana, United States of America, 5 Botany Department, University of Hawaii at Manoa, Honolulu, Hawaii, United States of America Abstract We coordinated biogeographical comparisons of the impacts of an exotic invasive tree in its native and non-native ranges with a congeneric comparison in the non-native range. Prosopis juliflora is taxonomically complicated and with P. pallida forms the P. juliflora complex. Thus we sampled P. juliflora in its native Venezuela, and also located two field sites in Peru, the native range of Prosopis pallida. Canopies of Prosopis juliflora, a native of the New World but an invader in many other regions, had facilitative effects on the diversity of other species in its native Venezuela, and