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Ver términos de la licenciaLópez Toledo, Leonel, et al. (2011). The soil seed bank in abandoned tropical pastures: source of regeneration or invasion?. Revista Mexicana de Biodiversidad; Vol. 82, núm. 2, 2011: junio. Recuperado de https://repositorio.unam.mx/contenidos/23675
Autor(es)
López Toledo, Leonel; Martínez Ramos, Miguel
Tipo
Artículo de Investigación
Área del conocimiento
Biología y Química
Título
The soil seed bank in abandoned tropical pastures: source of regeneration or invasion?
Fecha
2011-06-01
Resumen
We assessed the availability of both pioneer and non-native species in the soil seed bank of old-growthforest and recently abandoned pasture, to evaluate whether the soil seed bank in these pastures represents a source ofregeneration of species from adjacent old-growth forest or of invasion by non-native species. Our study was conductedat Selva Lacandona, Chiapas, Mexico. Soil samples were randomly collected from 6 sites in old-growth forest, and 6sites in abandoned pastures. Seedlings from soil samples were identified and classified into pioneer, non-native (weeds/graminoids), and other forest species. Pioneer species seeds were virtually absent in pastures, but represented ~30%of seeds in the forest. Non-native species comprised ~99% of the soil seed bank in pastures. In the forest, soil seedbank density of weeds and graminoids decreased with increasing distance (up to 4 km) from agricultural fields, andcomprised up to 25% (Mean ± 1SE= 16 ± 7) of the seed bank. Our results show a near total elimination of pioneerspecies from the soil seed bank in pastures, and considerable invasion of the borders of the Montes Azules reserve byseeds of non-native species. Thus, in the region studied, the soil seed bank in abandoned pastures represents a source ofinvasion by non-native species into old-growth forest rather than a potential source of forest regeneration.
Tema
Tropical rain forest; Selva Lacandona; Chiapas; pioneer regeneration; weed invasion
Idioma
eng
ISSN
2007-8706; 1870-3453
DOI
https://doi.org/10.22201/ib.20078706e.2011.2.462
