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Efectos de la Explotación y los Límites de Parques en Leguminosas del Desierto de Sonora
Author(s) -
Suzán Humberto,
Malda Guadalupe,
Patten Duncan T.,
Nabhan Gary P.
Publication year - 1999
Publication title -
conservation biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.2
H-Index - 222
eISSN - 1523-1739
pISSN - 0888-8892
DOI - 10.1046/j.1523-1739.1999.98177.x
Subject(s) - ephemeral key , transect , national park , geography , cactus , national monument , ecology , agroforestry , forestry , biology , archaeology
Legume trees have been harvested in the Sonoyta Valley since 1975. We estimated the effects of this woodcutting along the border between Organ Pipe Cactus National Monument (U.S.A.) and Sonora, Mexico. We placed 10 × 100 m transects in ephemeral watercourses and uplands on both sides of the international boundary at different distances from the border. Mesquite and ironwood trees exhibited significantly higher damage in the Mexican sites than in the protected uplands in the United States. Damage for all the species significantly decreased 500 m from the border, with the exception of ironwood, for which damage remained high within ephemeral watercourses.