Variação diurna de aves amostradas por transecções em áreas de cerrado de São Paulo, Brasil
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/226168 |
Resumo: | The general statement that birds are recorded more often on morning than on afternoon counts is quite common and widespread among ornithologists. Although many investigators have reported temporal variations in bird detections using Point Counts in temperate regions, few researches regarding the same objectives have been conducted in Neotropical habitats or used transect counts as field method. We used transect counts to test the hypothesis that birds are evenly recorded between times of day in a predominantly open Cerrado landscape in southeastern Brazil. Although not always significantly, the number of species and individuals were consistently greater during the morning counts, which corroborates the fact that birds can be more detectable during this time of day. However, a few families as well as a small percentage of species were more likely to be recorded during either one of the two periods we analyzed. Our results suggest that morning counts should detect higher number of both species and individuals in our study area, but specific taxa show distinct patterns of detection which should be acknowledged prior to sampling. |
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Variação diurna de aves amostradas por transecções em áreas de cerrado de São Paulo, BrasilDiurnal variation in transect counts of birds in a cerrado landscape in the state of São Paulo, BrazilAbundanceNeotropical regionPatterns of detectionRichnessTime of dayVisual detectionThe general statement that birds are recorded more often on morning than on afternoon counts is quite common and widespread among ornithologists. Although many investigators have reported temporal variations in bird detections using Point Counts in temperate regions, few researches regarding the same objectives have been conducted in Neotropical habitats or used transect counts as field method. We used transect counts to test the hypothesis that birds are evenly recorded between times of day in a predominantly open Cerrado landscape in southeastern Brazil. Although not always significantly, the number of species and individuals were consistently greater during the morning counts, which corroborates the fact that birds can be more detectable during this time of day. However, a few families as well as a small percentage of species were more likely to be recorded during either one of the two periods we analyzed. Our results suggest that morning counts should detect higher number of both species and individuals in our study area, but specific taxa show distinct patterns of detection which should be acknowledged prior to sampling.Departamento de Zoologia Universidade de São Paulo, Rua do Matão, Travessa 14, no 101, 05508900, São Paulo, SPDepartamento de Ciências Biológicas Universidade Estadual Paulista, Rua Engenheiro Luiz Edmundo Carrijo Coube, 14-01, 17033-360 Bauru, SPDepartamento de Ciências Biológicas Universidade Estadual Paulista, Rua Engenheiro Luiz Edmundo Carrijo Coube, 14-01, 17033-360 Bauru, SPUniversidade de São Paulo (USP)Universidade Estadual Paulista (UNESP)Cavarzere, VagnerMoraes, Gabriel Parmezani [UNESP]2022-04-28T21:39:42Z2022-04-28T21:39:42Z2010-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article97-101Revista Brasileira de Ornitologia, v. 18, n. 2, p. 97-101, 2010.0103-5657http://hdl.handle.net/11449/2261682-s2.0-78650429377Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Brasileira de Ornitologiainfo:eu-repo/semantics/openAccess2024-04-23T15:24:01Zoai:repositorio.unesp.br:11449/226168Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-23T15:24:01Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Variação diurna de aves amostradas por transecções em áreas de cerrado de São Paulo, Brasil Diurnal variation in transect counts of birds in a cerrado landscape in the state of São Paulo, Brazil |
title |
Variação diurna de aves amostradas por transecções em áreas de cerrado de São Paulo, Brasil |
spellingShingle |
Variação diurna de aves amostradas por transecções em áreas de cerrado de São Paulo, Brasil Cavarzere, Vagner Abundance Neotropical region Patterns of detection Richness Time of day Visual detection |
title_short |
Variação diurna de aves amostradas por transecções em áreas de cerrado de São Paulo, Brasil |
title_full |
Variação diurna de aves amostradas por transecções em áreas de cerrado de São Paulo, Brasil |
title_fullStr |
Variação diurna de aves amostradas por transecções em áreas de cerrado de São Paulo, Brasil |
title_full_unstemmed |
Variação diurna de aves amostradas por transecções em áreas de cerrado de São Paulo, Brasil |
title_sort |
Variação diurna de aves amostradas por transecções em áreas de cerrado de São Paulo, Brasil |
author |
Cavarzere, Vagner |
author_facet |
Cavarzere, Vagner Moraes, Gabriel Parmezani [UNESP] |
author_role |
author |
author2 |
Moraes, Gabriel Parmezani [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Cavarzere, Vagner Moraes, Gabriel Parmezani [UNESP] |
dc.subject.por.fl_str_mv |
Abundance Neotropical region Patterns of detection Richness Time of day Visual detection |
topic |
Abundance Neotropical region Patterns of detection Richness Time of day Visual detection |
description |
The general statement that birds are recorded more often on morning than on afternoon counts is quite common and widespread among ornithologists. Although many investigators have reported temporal variations in bird detections using Point Counts in temperate regions, few researches regarding the same objectives have been conducted in Neotropical habitats or used transect counts as field method. We used transect counts to test the hypothesis that birds are evenly recorded between times of day in a predominantly open Cerrado landscape in southeastern Brazil. Although not always significantly, the number of species and individuals were consistently greater during the morning counts, which corroborates the fact that birds can be more detectable during this time of day. However, a few families as well as a small percentage of species were more likely to be recorded during either one of the two periods we analyzed. Our results suggest that morning counts should detect higher number of both species and individuals in our study area, but specific taxa show distinct patterns of detection which should be acknowledged prior to sampling. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-06-01 2022-04-28T21:39:42Z 2022-04-28T21:39:42Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Revista Brasileira de Ornitologia, v. 18, n. 2, p. 97-101, 2010. 0103-5657 http://hdl.handle.net/11449/226168 2-s2.0-78650429377 |
identifier_str_mv |
Revista Brasileira de Ornitologia, v. 18, n. 2, p. 97-101, 2010. 0103-5657 2-s2.0-78650429377 |
url |
http://hdl.handle.net/11449/226168 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Revista Brasileira de Ornitologia |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
97-101 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965595403288576 |