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Ecología en Bolivia

versión On-line ISSN 2075-5023

Resumen

ZUNIGA, Alfredo H.; FUENZALIDA, Víctor  y  SANDOVAL, Rodolfo. Seasonal dynamics of bird assemblages on three habitats of Southern-central Chile. Ecología en Bolivia [online]. 2020, vol.55, n.2, pp. 73-84. ISSN 2075-5023.

The seasonal effect on the composition of a bird assembly was examinated at a priority site for the conservation of southern-central Chile, together with a Eucalyptus globulus plantation and an agroecosystem. During autumn, winter and spring 2014, the diversity of the assemblies and their composition in trophic terms were compared. Effects mainly associated to the habitat were observed, there being greater species richness in the agroecosystem (28), and a minimum in the plantation (24). Habitat effect was found to result in significant changes in species abundance through seasons (19 species in fall, and 20 in winter and spring, respectively). Seasonality produced lesser effect on species in habitats (8 in agroecosystem, 7 in forest and one species in plantations). In terms of guild composition, differences were observed both in their richness and their diversity depending on the habitats, which varied according to seasonality, highlighting the predominance of insectivores in the forest and omnivores in the agroecosystem. The ecological particularities of the species, mainly associated to the use of space, which would affect the observed community pattern are discussed.

Palabras clave : Agroecosystem; Guilds; Native forest; Plantations; Seasonality.

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