Structure of bird assemblages in dry and seasonally flooded grasslands in Itirapina Ecological Station, São Paulo state
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Biology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842013000100011 |
Resumo: | Grasslands are characteristic physiognomies of the Brazilian Cerrado domain. One of last remnants of these threatened environments in the state of São Paulo is located in Itirapina Ecological Station, considered as an Important Bird Area (IBA). We investigated bird assemblages that use seasonally flooded grasslands, and predominantly dry grasslands, from August 2010 until July 2011. We focused on aspects of assemblage structure, and possible responses of birds to environmental changes. We recorded 76 species, of which 23.7% are threatened. Some basic aspects of assemblages were similar between environments, such as diversity descriptors, and the tendency of increase richness in the same periods. Other parameters differed between environments, such as absolute richness, recorded monthly (lower in seasonally flooded grasslands). Considering time dimension in analyses, we observed differences in assemblage structure over time, within and between environments. When birds were grouped in guilds, assemblage structure did also differ. We identified significant correlations between the abundance of some guilds and environmental variables. Changes in the availability of resources and microhabitats may affect structure and organization of the studied bird assemblages. |
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Brazilian Journal of Biology |
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Structure of bird assemblages in dry and seasonally flooded grasslands in Itirapina Ecological Station, São Paulo stateavifaunagrasslandsmicrohabitatfood resourceseasonalityGrasslands are characteristic physiognomies of the Brazilian Cerrado domain. One of last remnants of these threatened environments in the state of São Paulo is located in Itirapina Ecological Station, considered as an Important Bird Area (IBA). We investigated bird assemblages that use seasonally flooded grasslands, and predominantly dry grasslands, from August 2010 until July 2011. We focused on aspects of assemblage structure, and possible responses of birds to environmental changes. We recorded 76 species, of which 23.7% are threatened. Some basic aspects of assemblages were similar between environments, such as diversity descriptors, and the tendency of increase richness in the same periods. Other parameters differed between environments, such as absolute richness, recorded monthly (lower in seasonally flooded grasslands). Considering time dimension in analyses, we observed differences in assemblage structure over time, within and between environments. When birds were grouped in guilds, assemblage structure did also differ. We identified significant correlations between the abundance of some guilds and environmental variables. Changes in the availability of resources and microhabitats may affect structure and organization of the studied bird assemblages.Instituto Internacional de Ecologia2013-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842013000100011Brazilian Journal of Biology v.73 n.1 2013reponame:Brazilian Journal of Biologyinstname:Instituto Internacional de Ecologia (IIE)instacron:IIE10.1590/S1519-69842013000100011info:eu-repo/semantics/openAccessFieker,CZ.Reis,MG.Dias Filho,MM.eng2013-04-18T00:00:00Zoai:scielo:S1519-69842013000100011Revistahttps://www.scielo.br/j/bjb/https://old.scielo.br/oai/scielo-oai.phpbjb@bjb.com.br||bjb@bjb.com.br1678-43751519-6984opendoar:2013-04-18T00:00Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE)false |
dc.title.none.fl_str_mv |
Structure of bird assemblages in dry and seasonally flooded grasslands in Itirapina Ecological Station, São Paulo state |
title |
Structure of bird assemblages in dry and seasonally flooded grasslands in Itirapina Ecological Station, São Paulo state |
spellingShingle |
Structure of bird assemblages in dry and seasonally flooded grasslands in Itirapina Ecological Station, São Paulo state Fieker,CZ. avifauna grasslands microhabitat food resource seasonality |
title_short |
Structure of bird assemblages in dry and seasonally flooded grasslands in Itirapina Ecological Station, São Paulo state |
title_full |
Structure of bird assemblages in dry and seasonally flooded grasslands in Itirapina Ecological Station, São Paulo state |
title_fullStr |
Structure of bird assemblages in dry and seasonally flooded grasslands in Itirapina Ecological Station, São Paulo state |
title_full_unstemmed |
Structure of bird assemblages in dry and seasonally flooded grasslands in Itirapina Ecological Station, São Paulo state |
title_sort |
Structure of bird assemblages in dry and seasonally flooded grasslands in Itirapina Ecological Station, São Paulo state |
author |
Fieker,CZ. |
author_facet |
Fieker,CZ. Reis,MG. Dias Filho,MM. |
author_role |
author |
author2 |
Reis,MG. Dias Filho,MM. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Fieker,CZ. Reis,MG. Dias Filho,MM. |
dc.subject.por.fl_str_mv |
avifauna grasslands microhabitat food resource seasonality |
topic |
avifauna grasslands microhabitat food resource seasonality |
description |
Grasslands are characteristic physiognomies of the Brazilian Cerrado domain. One of last remnants of these threatened environments in the state of São Paulo is located in Itirapina Ecological Station, considered as an Important Bird Area (IBA). We investigated bird assemblages that use seasonally flooded grasslands, and predominantly dry grasslands, from August 2010 until July 2011. We focused on aspects of assemblage structure, and possible responses of birds to environmental changes. We recorded 76 species, of which 23.7% are threatened. Some basic aspects of assemblages were similar between environments, such as diversity descriptors, and the tendency of increase richness in the same periods. Other parameters differed between environments, such as absolute richness, recorded monthly (lower in seasonally flooded grasslands). Considering time dimension in analyses, we observed differences in assemblage structure over time, within and between environments. When birds were grouped in guilds, assemblage structure did also differ. We identified significant correlations between the abundance of some guilds and environmental variables. Changes in the availability of resources and microhabitats may affect structure and organization of the studied bird assemblages. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-02-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842013000100011 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842013000100011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1519-69842013000100011 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto Internacional de Ecologia |
publisher.none.fl_str_mv |
Instituto Internacional de Ecologia |
dc.source.none.fl_str_mv |
Brazilian Journal of Biology v.73 n.1 2013 reponame:Brazilian Journal of Biology instname:Instituto Internacional de Ecologia (IIE) instacron:IIE |
instname_str |
Instituto Internacional de Ecologia (IIE) |
instacron_str |
IIE |
institution |
IIE |
reponame_str |
Brazilian Journal of Biology |
collection |
Brazilian Journal of Biology |
repository.name.fl_str_mv |
Brazilian Journal of Biology - Instituto Internacional de Ecologia (IIE) |
repository.mail.fl_str_mv |
bjb@bjb.com.br||bjb@bjb.com.br |
_version_ |
1752129879676026880 |