Long-term avifaunal survey in an urban ecosystem from southeastern Brazil, with comments on range extensions, new and disappearing species

Papéis Avulsos de Zoologia (São Paulo)

Marcelo Ferreira De Vasconcelos²  Eduardo De Carvalho Dutra²  Luiz Gabriel Mazzoni²  Letícia Ferreira Pedroso²  Alyne Perillo²  Fernando Augusto Valério²  Tadeu Guerra¹  Diego Petrocchi²  Rodrigo Morais²  Lucas Penna Soares Santos²  Bruno Garzon²  Juan Espanha Moreira Dias¹  José Enemir Dos Santos¹  Allan Suhett De Morais²  Letícia Souza Lima Guimarães²  Frederico Innecco Alves Garcia²  Thiago Oliveira E Almeida²  Carlos Eduardo Ribas Tameirão Benfica²  Helberth José Cardoso Peixoto¹  Bruno Pardinho Ribeiro¹ 

[1] ,Pontifícia Universidade Católica de Minas Gerais Museu de Ciências Naturais Belo Horizonte MG ,Brasil

关键词: Avifauna;    Colonization;    Disappearing species;    Urban environment;    Ambiente urbano;    Avifauna;    Colonização;    Desaparecimento de espécies;   

DOI  :  10.1590/S0031-10492013002500001

来源: SciELO

【 摘 要 】

Urban avifaunal surveys in Brazil have been increasing in recent years, despite none of them consisting of long-term studies indicating events of regional colonization and/or missing species. Here, we present an avifaunal survey of an urbanized ecosystem in southeastern Brazil, carried out along 30 years, on the campus of the Pontifícia Universidade Católica de Minas Gerais, municipality of Belo Horizonte, Minas Gerais state. Inside the campus there is a forest reserve adjacent to a small lake. The inventory was mainly based on opportunistic records from the years 1982-2013. We recorded 134 bird species along the past 30 years. However, the present avifauna is composed of 123 species. A total of 97 species was recorded in the reserve, including the forest fragment and the adjacent lake, of which 44 were exclusive to this area. Nevertheless, the majority of the current species found in the study area is forest independent (N = 51) or semi-dependent (N = 46). There is a predominance of insectivorous (N = 43) and omnivorous (N = 29) species. The current avifauna is represented by 15 migratory species, which can be found both in the urbanized area and in the forest remnant. However, the majority of the species (N = 75) is resident in the area, including three invasive species, whereas few others (N = 28) are occasional visitors. The remaining species were probably introduced in the area. There were 11 cases of disappearing species, which include typical forest birds, and also species typical of wetlands and rural environments. We also comment on recent colonization and on the possible effects of isolation on birds. Probably, the majority of forest-dependents are on the brink of extinction in the forest fragment. Thus, the species' list provided here can be useful as a database for monitoring long-term effects of urbanization on this bird community.

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