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Acta zoológica mexicana

versión On-line ISSN 2448-8445versión impresa ISSN 0065-1737

Resumen

MANCILLA -BRINDIS, Rubén Francisco et al. Richness and abundance of epigeal macrofauna in four tropical systems of Chiapas, Mexico. Acta Zool. Mex [online]. 2017, vol.33, n.3, pp.464-471. ISSN 2448-8445.

We sampled four vegetation systems with different degree of disturbance (i. e. tropical forest, mature and young secondary forest, and a cornfield) in northern Chiapas, Mexico. The objective of this study was to determine the differences in the composition and structure of macroinvertebrate communities in litter. We estimated abundance (N), species richness (S), Shannon’s diversity (H′), Pielou’s evenness (J), and Morisita-Horn’s similarity index. Twenty samples were randomly placed in each system by using 1-m2 quadrats. Leaf litter and organic matter (humus) were collected from the quadrat to a depth of 5.0 cm, with the purpose of collecting only the epigeous macroinvertebrates. We collected 1,259 specimens from three phyla, nine classes, 26 orders, 61 families, 17 genera, and 100 morphotypes. The highest N and S were observed in the tropical forest, however, the highest diversity (H′) occurred in the young secondary forests. The cornfield showed the highest evenness. There was a positive relation between the systems’ conservation level and macroinvertebrate abundance, but not with species richness.

Palabras llave : macroinvertebrates; communities; disturbance; plant succession.

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