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| Cavarzere,Vagner; Costa,Thiago Vernaschi Vieira da; Silveira,Luís Fábio. |
| Due to rapid and continuous deforestation, recent bird surveys in the Atlantic Forest are following rapid assessment programs to accumulate significant amounts of data during short periods of time. During this study, two surveying methods were used to evaluate which technique rapidly accumulated most species (> 90% of the estimated empirical value) at lowland Atlantic Forests in the state of São Paulo, southeastern Brazil. Birds were counted during the 2008-2010 breeding seasons using 10-minute point counts and 10-species lists. Overall, point counting detected as many species as lists (79 vs. 83, respectively), and 88 points (14.7 h) detected 90% of the estimated species richness. Forty-one lists were insufficient to detect 90% of all species. However,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bertioga; Bird species richness; MacKinnon lists; Rapid assessment programs; Surveying methods. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492012002800001 |
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| Cavarzere,Vagner; Alves,Fernanda; Machado,Érika; Rego,Marco Antônio; Silveira,Luís Fábio; Costa,Marcos Mendonça; Calonge-Méndez,Andrés. |
| Despite their wide use in ornithological surveys, point counts and mist nets follow protocols developed in temperate regions, with little attention to possible modifications for tropical systems. Using these methods on a 3-month basis from December 2009-January 2011 in two forest fragments in southeastern Brazil, we wished to evaluate how long these locations needed to be surveyed with point counts for a relatively complete avifaunal inventory (at least 90% of all species and contacts), and if mist net hourly captures can equally detect numbers of species and individuals. Daily counting with four 20-min points during five consecutive days in a rain forest (MC) detected 90% of the estimated species richness after 20 h (60 20-min point counts), while 17 h... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avian abundance; Bird species richness; Bird surveying methods; Method efficiency; Neotropical forests. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492013002600001 |
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