Efectos de un vial sobre la entomofauna en un bosque semideciduo de Cayo Coco, Cuba
Fecha
2018-06
Autores
Rodríguez Suárez, Eily
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Editor
Universidad Central "Marta Abreu" de Las Villas.Facultad de Ciencias Agropecuarias.Departamento de Biología
Resumen
La fragmentación por carreteras es una de las principales causas que afecta a la fauna terrestre. La determinación del efecto de un vial principal sobre la entomofauna en un bosque semideciduo se llevó a cabo por primera vez en Cayo Coco. El estudio se realizó en el año 2016, entre los meses de abril y mayo. Se realizaron diez puntos a lo largo del vial; en cada uno se trazaron tres transectos en forma de gradiente del borde al interior del bosque y paralelos a la carretera. Para la captura de los insectos se utilizó como método de muestreo el jameo con red entomológica sobre la vegetación. Se capturaron un total de 2544 individuos y 187 especies, de ellas, 10 son nuevos registros para Cayo Coco y para el Archipiélago de Sabana-Camagüey. Se destacan por la abundancia y riqueza de especies los órdenes Coleoptera e Hymenoptera y la familia Formicidae. No se encontraron cambios en la abundancia, composición y riqueza de especies provocado por el efecto de borde a lo largo del gradiente borde-interior. El 23% de las especies fueron identificadas como generalistas, y dentro de las especialistas se identificaron un mayor número de especie con preferencia por el borde que por el interior del bosque. El análisis de redundancia mostró poca asociación entre las variables climáticas y de la vegetación con los órdenes de insectos, probablemente debido a la ausencia de un gradiente ambiental evidente en el área de estudio.
Fragmentation by roads is one of the main causes that affects the terrestrial fauna. The determination of the effect of a main road on the entomofauna in a semideciduous forest was carried out for the first time in Cayo Coco. The study was conducted in 2016, between the April and May. Ten points were made along the road; in each one three transects were drawn in the form of a gradient from the edge to the interior of the forest and parallel to the road. For the capture of the insects, an entomological net over the vegetation was used as a sampling method. A total of 2544 individuals and 187 species were captured, of which 10 are new records for Cayo Coco and for the Sabana-Camagüey Archipelago. The Coleoptera and Hymenoptera orders and the Formicidae family stand out for the abundance and richness of species. No changes were found in the abundance, composition and species richness caused by the edge effect along the edge-interior gradient. 23% of the species were identified as generalists, and within the specialists a greater number of species were identified, preferably by the edge than by the interior of the forest. The redundancy analysis showed little association between climatic and vegetation variables with insect orders, probably due to the absence of an evident environmental gradient in the study area.
Fragmentation by roads is one of the main causes that affects the terrestrial fauna. The determination of the effect of a main road on the entomofauna in a semideciduous forest was carried out for the first time in Cayo Coco. The study was conducted in 2016, between the April and May. Ten points were made along the road; in each one three transects were drawn in the form of a gradient from the edge to the interior of the forest and parallel to the road. For the capture of the insects, an entomological net over the vegetation was used as a sampling method. A total of 2544 individuals and 187 species were captured, of which 10 are new records for Cayo Coco and for the Sabana-Camagüey Archipelago. The Coleoptera and Hymenoptera orders and the Formicidae family stand out for the abundance and richness of species. No changes were found in the abundance, composition and species richness caused by the edge effect along the edge-interior gradient. 23% of the species were identified as generalists, and within the specialists a greater number of species were identified, preferably by the edge than by the interior of the forest. The redundancy analysis showed little association between climatic and vegetation variables with insect orders, probably due to the absence of an evident environmental gradient in the study area.
Descripción
Palabras clave
Cayo Coco, Entomofauna, Bosque Semideciduo, Insectos