La selva inundable de canacoite en Tabasco, México, una comunidad vegetal amenazada

Acta Botanica Mexicana

Susana Ochoa-Gaona¹  Bernardus H. J. de Jong¹  Rodimiro Ramos-Reyes²  Noel González-Valdivia³  María de los Ángeles Guadarrama-Olivera⁴  Emerson A. Maldonado-Sánchez⁴ 

[1] El Colegio de la Frontera Sur, Unidad Campeche, Departamento de Ciencias de la Sustentabilidad;El Colegio de la Frontera Sur, Unidad Villahermosa, Laboratorio de Análisis Geográfico;Tecnológico Nacional de México, Departamento de Ingenierías;Universidad Juárez Autónoma de Tabasco, División Académica de Ciencias Biológicas

关键词: bosques de Bravaisia;    diversidad florística;    reserva ecológica;    riqueza arbórea;   

DOI  :  10.21829/abm115.2016.1113

学科分类：植物学

来源: Acta Botanica Mexicana

【 摘 要 】

The structure, composition and diversity of the floodplain forest (SMPC) ofBravaisia integerrimawere studied in the two largest forest stands in Tabasco, Mexico: the Ecological Reserve Yu-Balcah (YCAH) with 271 ha, and State Park La Chontalpa (PECH) with 191 ha. In each forest stand 10 plots of 1000 m 2were sampled. Tree individuals sampled were identified to species, and evaluated in three age categories, seedlings, saplings, and adults. The relationship between species richness and sampling effort was analyzed using Chao 2, ICE, Jacknife 1, Jacknife 2 and Bootstrap. The structural analysis was based on the importance value index. The diversity of species was evaluated, using the Margalef index ( DMg ), α de Fisher, Shannon-Wiener ( H' ) and equity of Pielou J. The dominance indices of Berger-Parker ( d ) and Simpson ( D ) were also used. The total number of species was 76, belonging to 64 genera and 33 botanical families. The richest family was Leguminosae with 15 species. The basal area of the sites YCAH and PECH was 37.2 and 29.5 m 2 ha -1 , respectively.Bravaisia integerrimawas the most important tree species in all stands, with an Importance Index of 277. The value of the Shannon index was 2.0 in both sites. YCAH showed the best ecological condition. Six species present in the stands are considered as threatened in Mexico (NOM-059-SEMARNAT-2010). The current extent of the floodplain forest ofBravaisiain Tabasco State is 490 ha. The results suggest that the structure and composition of this forest has been affected by human activity. As a consequence, to guarantee the conservation of these remnants of SMPC in Tabasco, it is important to verify their legal situation and the application of management plans, designed to improve the productive activities of the rural communities that live around the stands. To succeed in this endeavor, it is necessary that governmental actors, academics, non-governmental organizations, and civil society work together.

【 授权许可】

CC BY-SA