EFECTO DE LA PERTURBACIÓN EN LA COMUNIDAD DE HERBÁCEAS NATIVAS Y RUDERALES DE UNA SELVA ESTACIONAL MEXICANA

JESSICA DE LA O-TORIS, BELINDA MALDONADO, CRISTINA MARTÍNEZ-GARZA

Abstract


Disturbance in dry forests due to cattle ranching and wood extraction alters the herbaceous community. The objective of this study was to evaluate species richness, biomass, composition, and traditional use of native and ruderal herbs in 120 0.25 m2 plots distributed at random in ten sites of 50 × 50 m: four sites in secondary forest excluded from disturbance during 32 months, three sites in secondary forest under chronic disturbance during > 30 years, and three sites in preserved forest in the Sierra de Huautla, state of Morelos, Mexico. Disturbance in the dry forest has resulted in changes in herbaceous composition and increase of richness. The decrease in the tree density due directly to wood extraction or indirectly to cattle ranching had a larger effect on herbaceous richness because it favors the establishment of ruderal herbs. However, given that the cattle is probably the dispersal agent of these species, a lower richness of ruderal herbs is expected in areas without cattle ranching even under disturbance by selective extraction of wood. More native than ruderal herbs had a traditional use and 50% of them were only found in the secondary forest; these native species had not been replaced from this habitat even after decades of disturbance. The establishment of mosaics that include preserved forest, forest excluded, and other areas under use, will allow the maintenance of the community of herbs in coexistence with the economic activities of the region.

Keywords


conservation; Elytraria imbricada; exclusions; herbs management; Opizia stolonifera; richness; Sierra de Huautla

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DOI: http://dx.doi.org/10.17129/botsci.475

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Botanical Sciences is an international peer-reviewed journal that publishes scientific papers in plant sciences. The arguments, figures / schemes / photographs, quality and the general contents of this publication are full responsibility of the authors, and not commit the Editor- in-Chief or the Sociedad Botánica de México.

Botanical Sciences year 8, Vol. 97, No. 2, April-June 2019. Quarterly publication edited and published by Sociedad Botánica de México A.C. (www.socbot.mx). Editor in Chief Salvador Arias, Jardín Botánico, Instituto de Biología, 3er Circuito s/n, Ciudad Universitaria, Delegación Coyoacán, C.P. 04510. Reserves of Rights to the Exclusive Use No. 04-2017-040716054100-203, digital-ISSN 2007-4476, both granted by the Instituto Nacional del Derecho de Autor. Responsible for updating the page Pedro López, email: plopez@escire.mx, eScire. Last update July 18, 2019.

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