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Revista Colombiana de Entomología

Print version ISSN 0120-0488
On-line version ISSN 2665-4385

Abstract

GOMEZ-ANAYA, JOSÉ ANTONIO; PALACIOS-VARGAS, JOSÉ G  and  CASTANO-MENESES, GABRIELA. Abundance of springtails (Hexapoda: Collembola) and edaphic parameters from a deciduous dry forest. Rev. Colomb. Entomol. [online]. 2010, vol.36, n.1, pp.96-105. ISSN 0120-0488.

The abundance patterns of leaf litter and soil springtails (Hexapoda: Collembola) from two hydrological watersheds of the Chamela Biological Statión (EBCh, UNAM) in Jalisco, México are described and compared based on monthly sampling over one year. This locality, where the dominant vegetatión is tropical dry forest, had an atypically high rainfall during the sampling period, with the greatest amount of rain during January. Sampling in both biotopes was random, the areas sampled were of the same size (95 cm2), and these were processed in situ using Berlese funnels. In addition, different edaphic characteristics were quantified. The effect of watershed, biotope and seasonality factors on the abundance of Collembola families was analysed. Using Cluster Analysis (CA), the faunistic relationships between the assemblages were explored, and using Canonical Correspondence Analysis (CCA) the relationships between assemblages and the physico-chemical variables of the soil. A total of 24.253 Collembola were obtained, belonging to 13 families. The most abundant were Isotomidae, Entomobryidae, Hypogastruridae and Sminthuridae. The CA showed more similarity between biotopes than between hydrological watersheds, while in the CCA the most important variable to explain the distributión and abundance of the Collembola was humidity.

Keywords : Cluster analysis; Abundance patterns; Canonical Correspondence Analysis; Chamela; México.

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