(Download) "Changes in Native Vegetation Following Different Disturbances in the Lower Rio Grande Valley, Texas." by The Texas Journal of Science * Book PDF Kindle ePub Free

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Title: Changes in Native Vegetation Following Different Disturbances in the Lower Rio Grande Valley, Texas.
Author : The Texas Journal of Science
Release Date : January 01, 1990
Genre: Engineering,Books,Professional & Technical,
Pages : * pages
Size : 184 KB

Description

ABSTRACT. -- Permanent plots established in 1981 were censused again in 1986 at the Palmview tract of the Rio Grande Valley National Wildlife Refuge in southern Texas. Successional changes from bareground to communities dominated by dry-land willow (Baccharis neglecta) and huisache (Acacia smallii) were documented. In formerly grazed woodlands, overstory honey mesquite (Prosopis glandulosa) trees grew an average of 2.5 meters in height over the five-year period. Understory honey mesquite trees were dying, and cover of herbaceous vegetation declined. Cover of woody species such as coma (Bumelia celastrina), granjeno (Celtis pallida), brasil (Condalia hookeri), and Texas ebony (Pithecellobium flexicaule) were increasing beneath honey mesquite. Key words: grazing; mesquite; old fields; Prosopis; succession; Texas. **********