RT info:eu-repo/semantics/article
T1 Diversity and dominance in bird assemblages across habitats in the Ñeembucú wetlands complex
A1 Ortíz, Fátima Natalia
A1 Salinas, Patricia
A1 Mendoza, Medes Alexandre
A1 Zárate Betzel, Griselda Inés
A1 Piris Da Motta, Fátima
A1 Esquivel, Alberto
A1 Núñez, Karina Beatriz
A1 Silla, Fernando
A2 Universidad Nacional de Asunción. Facultad de Ciencias Exactas y Naturales
AB Understanding how diversity responds to habitat heterogeneity in a landscape is a central issue for implementing effective conservation plans. In this study, we analyzed how the composition and abundance of neotropical bird assemblages vary among habitats in the Ñeembucú Wetlands Complex, the largest wetland system in Paraguay. Bird surveys were conducted during 1 year within dominant habitats in the landscape: riparian forests, natural grasslands, savannas, and anthropized sites. The Ñeembucú Wetlands Complex showed a high bird richness (209 species) that contrasted with a pattern of dominance by a small set of 16 species that comprised half of the abundance. This set of oligarchic species consists of generalist species that exploited a wide variety of habitats and were well adapted to human disturbance, contributing to an important overlap in the composition of assemblages. However, despite this overall similarity, there is still significant differentiation in bird assemblages, especially between habitats with the most contrasting vegetation physiognomy. Riparian forests and savannas showed higher diversity values than the more structurally homogeneous grasslands. Also, all natural habitats showed, in general, higher diversity values than anthropized sites. Oligarchic species had higher importance in anthropized environments, which also had the most uneven distribution of abundance between species, indicating the dominance by a smaller number of species and the loss of ecological diversity as farmland and urban development increase.
PB Wiley Periodicals LLC
SN 0006-3606
YR 2024
FD 2024-07-30
LK http://hdl.handle.net/20.500.14066/4441
UL http://hdl.handle.net/20.500.14066/4441
LA eng
NO Ortiz, F., Salinas, P., Mendoza, M., Zárate, G., da Motta, F. P., Esquivel, A., Núñez, K., & Silla, F. (2024). Diversity and dominance in bird assemblages across habitats in the Ñeembucú wetlands complex. Biotropica, Artículo e13368. https://doi.org/10.1111/btp.13368
NO Correspondence: Fernando Silla, Área de Ecología, Facultad de Biología, Campus Unamuno s/n, Universidad de Salamanca, Salamanca, Spain. Email: fsilla@usal.es
NO Consejo Nacional de Ciencia y Tecnología
DS MINDS@UW
RD 04-nov-2024