Comparação entre dois métodos de amostragem de aves: gravadores autônomos e ponto fixo

• Main Author: Freitas, Bruno Machado de [UNESP]
• Publication Date: 2017
• Format: Bachelor thesis
• Language: por
• Source: Repositório Institucional da UNESP
• Download full: http://hdl.handle.net/11449/156445; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2018-04-26/000897945.pdf
• topic: Ave; Biodiversidade; Ecologia da paisagem; Registros sonoros; Cantareira, Serra da (SP); Mata Atlântica; São Paulo (Estado); Brasil

Birdlife is widely utilized as a biodiversity indicator, by being a diverse group that responds well to factors such as environment degradation, habitat loss and fragmentation, hunting and climate changes. There are many methods used in bird species surveys, among them the point count is one of the most used methods for being fast and having low cost,. As the technology advances, autonomous monitoring utilizing autonomous recorders are being more utilized. However, is necessary to investigate if the different methods present similar species detectability and efficiency .This study's objective is to compare two methods, point counts, used for being fast with low cost, and autonomous recorders, used for having a large storage capacity, and a long sampling duration. The hypothesis is that the correlation between the two methods is high. For this study were selected 10 bird species, five being sensitive to habitat fragmentation, and five less sensitive to fragmentation. The data was collected by autonomous recorders and point counts in the Serra da Cantareira, in the state of São Paulo. The results partially corroborate with the hypothesis, evidencing that the methods were similar for some analyzed species, showing that is necessary to adjust the methods for more precise results