Plant composition and structure of two post-livestock areas of Tamaulipan thornscrub, Mexico
Pequeño-Ledezma, Miguel A. | Alanís Rodríguez, Eduardo | Molina-Guerra, Víctor M. | Mora-Olivo, Arturo | Alcalá-Rojas, Alejandro G. | Martínez-Ávalos, José Guadalupe | Garza Ocañas, Fortunato
BACKGROUND: The composition, structure and biological diversity of two regenerated areas after livestock activities in a Tamaulipan thornscrub vegetation from Northeast Mexico were evaluated. The regeneration of each area was evaluated with the establishment of 12 sampling sites of 50m². From the data obtained ecological indexes such as: Importance Value Index and Diversity (alpha and beta) were evaluated. RESULTS: A total of 17 families, 40 genera and 42 species were registered, the most representative family was Fabaceae with 11 spp. The intensive livestock area had 36 species; a Margalef index of 4.44 and a 1.24 Shannon index, while the extensive livestock area had 32 species, a Margalef index of 4.24 and a 2.16 Shannon index. The communities evaluated have a (48%) mean similarity. CONCLUSIONS: 1) Regenerated communities after livestock use showed higher richness of species and alpha diversity. 2) Evaluated communities have a mean similarity of (48%). 3) Even after 25 years of regeneration the most dominant species was Cenchrus ciliaris that is used for cattle forage.
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