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Reportes científicos de la FACEN

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ORTIZ, Fátima et al. Richness, composition and trophic structure of bird communities in the wetlands of Ñeembucú, Paraguay. Rep. cient. FACEN [online]. 2022, vol.13, n.1, pp.28-40. ISSN 2222-145X.

Wetlands are one of the most productive ecosystems, since due to their ecological functions they provide multiple ecosystem services, and in which avifauna is one of the most abundant and studied vertebrates. This work provides information on the richness, composition and trophic structure of the birds that inhabit the wetlands of the department of Ñeembucú. To record the species, eight one-week sampling campaigns were car- ried out in the months of October and December 2020, and from February to July 2021, through counting points, observed during the first hours of the day and at dusk. The analysis of the trophic structure of the species was based on carnivore, scavenger, frugivore, insectivore, insectivore, nectarivore, seedeater and omnivore accord- ing to their food resource. A total of 227 species corresponding to 182 genera, 54 families and 26 orders were recorded. Species classified as seed-eating, nectarivorous and scavenging were found to be exclusive to a single order and family while the carnivorous, frugivorous, insectivorous and omnivorous categories were distributed in different orders and families. This denotes the use of resources associated with the provision of regulating and supporting ecosystem services. Therefore, the information generated is a tool to support conservation actions in the wetlands of the department of Ñeembucú.

Keywords : Avifauna; feeding; monitoring; ecosystem service.

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