Consulta: creatorFacets:"Cavarzere,Vagner"
Registros recuperados: 13
Data/hora: 18/06/2024 17:41:51

Comparação quantitativa da comunidade de aves de um fragmento de floresta semidecidual do interior do Estado de São Paulo em intervalo de 30 anos
Provedor de dados: 76
Autores: Cavarzere,Vagner; Marcondes,Rafael S.; Moraes,Gabriel P.; Donatelli,Reginaldo J.
Poucos estudos avaliaram em longo prazo a variação no tamanho populacional das espécies de aves em fragmentos florestais. Para avaliar a riqueza e a abundância específica da comunidade de aves de um remanescente de mata semidecidual do interior do Estado de São Paulo, sudeste do Brasil, foi conduzido o censo da avifauna florestal utilizando-se a metodologia de contagem em transecção. Estes resultados foram comparados com levantamento realizado na mesma localidade 30 anos antes, e as aves foram classificadas de acordo com suas categorias alimentares com a finalidade de associá-las à tendência ao aumento/diminuição de suas abundâncias após este intervalo de tempo. Embora tenha havido predominância de espécies com diminuição populacional, todas as categorias...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundância de aves; Categorias tróficas; Contagem em transecção; Estação Ecológica dos Caetetus; Fragmentação.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212012000400004

Avifauna da Estação Ecológica dos Caetetus, interior de São Paulo, Brasil
Provedor de dados: 84
Autores: Cavarzere,Vagner; Moraes,Gabriel Parmezani; Donatelli,Reginaldo José.
A Estação Ecológica dos Caetetus possui um dos maiores remanescentes de mata estacional semidecídua ainda presentes no Estado de São Paulo. Poucos estudos foram realizados nessa localidade, extremamente importante no que diz respeito às aves da Mata Atlântica do interior do Estado. Para caracterizar a avifauna da estação com dados recentes e contribuir com novos registros, foi realizado um levantamento da avifauna utilizando-se o método de Pontos de Escuta entre outubro de 2005 e dezembro de 2006. Foram registradas 226 espécies enquanto diversos autores registraram outras 68, para um total de 293. Muitas espécies são endêmicas da Mata Atlântica ou do Cerrado e algumas são ameaçadas no Estado, justificando a existência dessa unidade de conservação e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aves; Cerrado; Mata Atlântica; Mata estacional semidecídua; Pontos de Escuta.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492009003500001

Does the reproductive season account for more records of birds in a marked seasonal climate landscape in the state of São Paulo, Brazil?
Provedor de dados: 84
Autores: Cavarzere,Vagner.
Investigators have reported that birds from temperate regions are more detectable during their breeding seasons, which should be used to adequately survey avifaunas. In the state of São Paulo, southeastern Brazil, the rainiest months of the year are usually associated with a peak in the reproduction of birds. To test the hypothesis that birds are equally detectable throughout the year, I conducted transect counts of birds in a predominantly open Cerrado landscape in São Paulo during 2005 and 2006. There was no significant difference in the number of species or individuals between breeding (rainy) and nonbreeding (dry) seasons; 24% of the species with &gt; 50 contacts was likely to be recorded more often in a particular season. Unlike temperate regions,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeding season; Neotropical region; Sampling period; Seasonal abundance; Seasonal climate; Seasonal species richness.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492013001800001

Boracéia Biological Station: an ornithological review
Provedor de dados: 84
Autores: Cavarzere,Vagner; Moraes,Gabriel Parmezani; Silveira,Luís Fábio.
Boracéia Biological Station, near the city of Salesópolis, SP, is located in one of the most well-defined centers of endemism in eastern Brazil - the Serra do Mar Center. While the station was established only in 1954 under the auspices of the Museu de Zoologia da Universidade de São Paulo, the avifauna of this locality had already attracted the attention of ornithologists by the 1940s, when the first specimens were collected. Here we describe the ornithological history of the Boracéia Biological Station with a review of all the bird species recorded during more than 68 years, including recent transect and mist-netting records. Boracéia's records were found in museums, literature and unpublished reports that totaled 323 bird species when recent data is...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Montane Atlantic forest; Transect counts; Mist-net; Richness; Ornithological collection.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492010001300001

List of documented bird species from the municipality of Ubatuba, state of São Paulo, Brazil
Provedor de dados: 84
Autores: Simpson,Rick; Cavarzere,Vagner; Simpson,Elis.
Although preliminary surveys have been conducted at the Atlantic Forest of Ubatuba, there is no list of documented bird records from this coastline municipality. To organize such a compilation, we searched the literature and a number of different sources for all documented records of birds from Ubatuba, state of São Paulo. We further carried out a 7-year non-systematic bird inventory in different regions and elevations to document the species within the municipality. The total number of documented bird species is 417, 11% of which are endemic to Brazil. Another 26% are Atlantic Forest endemics and as many as 60 species are under threat categories, including near-threatened birds, in the state. Some 49 species of 27 families are reported from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Avifauna; Documentation of records; Serra do Mar; Transect counts.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492012002100001

Birds from cerradão woodland, an overlooked forest of the Cerrado region, Brazil
Provedor de dados: 84
Autores: Cavarzere,Vagner; Moraes,Gabriel Parmezani; Dalbeto,Andreli Cristina; Maciel,Fernanda de Góes; Donatelli,Reginaldo José.
The Cerrado region still receives relatively little ornithological attention, although it is regarded as the only tropical savanna in the world considered to be a biodiversity hotspot. Cerradão is one of the least known and most deforested Cerrado physiognomies and few recent bird surveys have been conducted in these forests. In order to rescue bird records and complement the few existing inventories of this under-studied forest type in the state of São Paulo, we looked for published papers on birds of cerradão. Additionally we surveyed birds at a 314-ha cerradão remnant located in central São Paulo, Brazil, from September 2005-December 2006 using unlimited distance transect counts. Out of 95 investigations involving cerradão bird studies, only 17 (18%)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cerrado sensu lato; Endemic species; Peripheral Cerrado areas; Transect counts.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492011001700001

Recommendations for monitoring avian populations with point counts: a case study in southeastern Brazil
Provedor de dados: 84
Autores: Cavarzere,Vagner; Moraes,Gabriel Parmezani; Roper,James Joseph; Silveira,Luís Fábio; Donatelli,Reginaldo José.
In the northern hemisphere, bird counts have been fundamental in gathering data to understand population trends. Due to the seasonality of the northern hemisphere, counts take place during two clearly defined moments in time: the breeding season (resident birds) and winter (after migration). Depending on location, Neotropical birds may breed at any time of year, may or may not migrate, and those patterns are not necessarily synchronous among species. Also in contrast to the northern hemisphere, population trends and the impact of rapid urbanization and deforestation are unknown and unmonitored. Throughout one year, we used point counts to better understand temporal patterns of bird species richness and relative abundance in the state of São Paulo,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bird surveying method; Breeding Bird Survey; Christmas Bird Count; Methodological protocols; Pan-European Common Bird Monitoring Scheme; Temporal variation; Seasonal variation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492013003200001

Evaluation of methodological protocols using point counts and mist nets: a case study in southeastern Brazil
Provedor de dados: 84
Autores: 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

Taxonomy and biogeography of Stephanoxis Simon, 1897 (Aves: Trochilidae)
Provedor de dados: 84
Autores: Cavarzere,Vagner; Silveira,Luís Fábio; Vasconcelos,Marcelo Ferreira de; Grantsau,Rolf; Straube,Fernando Costa.
After the description in the 19th century of two hummingbird species currently allocated to the genus Stephanoxis, Peters (1945) merged both taxa into a single species without providing any rationale. Here we re-evaluate the taxonomy and species limits of the representatives of this genus based on an extensive number of specimens. We demonstrate these taxa are better treated as full species under both the Biological and Phylogenetic Species Concepts due to their well-defined range and plumage patterns and reciprocally diagnosability. They have distinct, allopatric distributions segregated by a 160 km gap between the Serra do Mar, to the east, and Serra de Paranapiacaba, to the west, in the state of São Paulo. Stephanoxis species have ranges which are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apodiformes; Atlantic forest; Montane forest; Serra do Mar; Serra de Paranapiacaba; Species limits.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492014000700001

On the use of 10-minute point counts and 10-species lists for surveying birds in lowland Atlantic Forests in southeastern Brazil
Provedor de dados: 84
Autores: 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 (&gt; 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

An overlooked hotspot for birds in the Atlantic Forest
Provedor de dados: 84
Autores: Cavarzere,Vagner; Albano,Ciro; Tonetti,Vinicius Rodrigues; Pacheco,José Fernando; Whitney,Bret M.; Silveira,Luís Fábio.
Abstract Montane and submontane forest patches in the state of Bahia, Brazil, are among the few large and preserved Atlantic Forests remnants. They are strongholds of an almost complete elevational gradient, which harbor both lowland and highland bird taxa. Despite being considered a biodiversity hotspot, few ornithologists have surveyed these forests, especially along elevational gradients. Here we compile bird records acquired from systematic surveys and random observations carried out since the 1980s in a 7,500 ha private protected area: Serra Bonita private reserve. We recorded 368 species, of which 143 are Atlantic Forest endemic taxa. Some 16 and 13 species are threatened at the global and national levels, respectively. If one accounts for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aves; Bahia; Elevational gradient; Serra Bonita.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492019000100205

Bird species diversity in the Atlantic Forest of Brazil is not explained by the Mid-domain Effect
Provedor de dados: 103
Autores: Cavarzere,Vagner; Silveira,Luís Fábio.
The Atlantic Forest is an excellent case study for the elevational diversity of birds, and some inventories along elevational gradients have been carried out in Brazil. Since none of these studies explain the patterns of species richness with elevation, we herein review all Brazilian studies on bird elevational diversity, and test a geometric constraint null model that predicts a unimodal species-altitude curve, the Mid-domain Effect (MDE). We searched for bird inventories in the literature and also analysed our own survey data using limited-radius point counts along an 800 m elevational gradient in the state of São Paulo, Brazil. We found 10 investigations of elevational diversity of Atlantic Forest birds and identified five different elevational...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Altitudinal gradient; Avian species richness; Geometric constraints; Mountain ecology; Null model; Rain forest.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000400001

Museum collections indicate bird defaunation in a biodiversity hotspot
Provedor de dados: 49
Autores: Cavarzere,Vagner; Silveira,Luis Fabio; Tonetti,Vinicius Rodrigues; Develey,Pedro; Ubaid,Flávio Kulaif; Regalado,Luciano Bonatti; Figueiredo,Luiz Fernando de Andrade.
Abstract Ipanema National Forest, southeastern Brazil, once contained 340 bird species. Forest cover suffered for centuries from log exploitation and, as a result, most of the remaining forests are now an impoverished subset of the original vegetation. We show how the bird community changed over time by comparing historical and recent records. Currently, 228 species can be recorded, for a compilation of 410 species, of which 359 are documented. Some 89 forest species with historical records failed to be detected in recent surveys. Of the 72 Atlantic Forest or Cerrado endemic species, no more than 29 (40%) are still found. The bird community changed from one which used to be related to coastline rain forests to another, which relates more to drier...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Cerrado; Hierarchical cluster analysis; Multivariate analysis; Semideciduous forests.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000400203