POPULATION ABUNDANCE OF Fluvicola nengeta (LINNAEUS, 1766) (AVES: TYRANNIDAE) IN A URBAN PARK

Autores

  • Giancarlo Ângelo Ferreira Universidade Federal de Uberlândia
  • Lídian Alves Fernandes Universidade Federal de Uberlândia
  • Adriano Alves da Silva Universidade Federal de Uberlândia
  • Celine Melo Universidade Federal de Uberlândia

DOI:

https://doi.org/10.4257/oeco.2017.2104.08

Palavras-chave:

birds, geographic expansion, population fluctuation

Resumo

Fluvicola nengeta is a passerine bird of the Tyrannidae family, which usually lives in areas near watercourses, such as rivers or lakes. This bird is quite common in northeastern Brazil but is expanding towards the south of the country and to other countries in South America. This study aimed to observe the population abundance of F. nengeta over two periods. For the collection of data on the species abundance in the years 2008/2009 and 2014/2015, we delimited 10 sampling points in the Sabiá Park (Uberlândia, MG). We performed monthly calculations of the Index of Point Abundance (IPA) for each assessed period and carried out measurements of the Frequency of Occurrence (FO) at each point sampled in each period. The sampling points were classified according to their environmental quality. There was a difference in the monthly IPA between the periods, which were higher in the 2014/2015 period. The FO per sampling point did not differ between the two periods analyzed. There was no relationship between the FO per point and the environmental quality of each point in any of the periods analyzed. There was no difference in the monthly IPA between the dry and rainy season in any of the periods analyzed. The constant conversion of natural habitats in to anthropized areas, along with the behavioral characteristics of F. nengeta, can be favoring the growth and expansion of its populations in this region.

Biografia do Autor

Giancarlo Ângelo Ferreira, Universidade Federal de Uberlândia

Em 2011 conclui meu Doutorado em Zoologia no Museu Nacional/UFRJ, sobre os efeitos da fragmentação de habitat nas comunidades de pequenos mamíferos não-voadores. Ainda, possuo Mestrado em Ecologia (UFRJ) na área de ecomorfologia e locomoção de marsupiais neotropicais, e graduação em Licenciatura em Ciências Biológicas (UFRJ) e Bacharelado em Ecologia (UFRJ). Atualmente sou pesquisadora associada ao Laboratório de Vertebrados (UFRJ), bolsista no Projeto Biodiversidade do Bioma Mata Atlântica - PROBIO II / MCT / IP JBRJ / UFRJ (vigência até março/2013), e sou consultora ambiental, com especialização em ecologia e zoologia de mamíferos terrestres.

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Publicado

2017-12-20