The Status of North American Migrants in Central Amazonian Brazil

Stotz, Douglas F.; Bierregaard, Richard O.; Cohn‐Haft, Mario; Petermann, Peter; Smith, J. Russell; Whittaker, Andrew S.; Wilson, Summer V.

doi:10.2307/1369246

Cited by 51 publications

(65 citation statements)

References 6 publications

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“…These habitats include periodically flooded vegetation, with unique floristics depending on duration and periodicity of flooding and on water characteristics, and successional vegetation forming on fresh alluvial sediments. It is generally observed that each recognizable plant community (habitat) has some bird species unique to it, consistent with the idea of conspicuous habitat specialization in the tropics (Willis 1977;Terborgh 1985;Bierregaard 1990;Terborgh et al 1990;Stotz et al 1992;Sanaiotti and Cintra 2001). Nevertheless, the fine distinctions among avifaunas in different riverine habitats have barely been studied.…”

Section: Introductionsupporting

confidence: 52%

Spatial distribution and habitat of the Anavilhanas Archipelago bird community in the Brazilian Amazon

2007

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This study is the first to present a quantitative survey of bird species occurring in the archipelago of Anavilhanas, located in the Rio Negro in the Brazilian Amazon and is part of the Anavilhanas Ecological Station. We asked whether bird community composition is similar among the islands, and between islands and areas dominated by the surrounding upland terra firme forest on the left (east) margin of the Rio Negro. The surveys were conducted in November and December of 1988, using two complementary methods with mist nets and boat transects. A total of 232 bird species was found for Anavilhanas including a survey done in 1998. The families Tyrannidae and Thamnophilidae showed the highest number of species (16.4% and 9.0% of the total respectively). Some species not well known or having limited distributions are relatively frequently encountered in the archipelago, such as Spizastur melanoleucus, Mitu tomentosa, Phaethornis rupurumii, Xiphorhynchus kienerii, Thamnophilus nigrocinereus, Myrmotherula klagesi, Myrmoborus lugubris, Pipra filicauda, and Cephalopterus ornatus. Hybrid Multidimensional Scaling (HMDS) ordination analysis indicated that the bird community composition is similar among islands. However, the bird community composition on the islands was significantly different from that in sites of terra firme forest at Rio Negro margins. Anavilhanas is a unique ecological system in the Amazon and has it own avifauna.

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Section: Introductionsupporting

confidence: 52%

Spatial distribution and habitat of the Anavilhanas Archipelago bird community in the Brazilian Amazon

2007

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“…25 nearctic species are known to winter in the southern Neotropics, mostly along the coasts. There is considerable migration through central South America (Antas, 1983;Stotz et al, 1992;Hayes et al, 1990) to important wintering areas in eastern Argentina. All of those species which take a continental migration route should be expected in the Pantanal.…”

Section: Birdsmentioning

confidence: 99%

Biodiversity and its conservation in the Pantanal of Mato Grosso, Brazil

et al. 2006

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The Pantanal of Mato Grosso, Brazil, is famous for its luxurious plant and animal life. We combine a literature review with recent work and show that species diversity is large but that most major plant and animal groups contain a large number of not wetland-specifi c species that depend on permanently terrestrial habitats within the Pantanal, or are restricted to dry areas during the low water period. These species occur also in the neighbouring biomes of Cerrado, Amazon Forest or Chaco. Until now, very few endemic species have been described, however, there are large populations of species in the Pantanal that are considered rare or endangered in South America. The number of trees adapted to long term fl ooding is low in comparison with the Amazon River fl oodplain. We hypothesize that the reason for the lack of local endemisms and the occurrence of a large number of species with a large ecological amplitude is the climatic instability of the region of the Pantanal, which suffered severe drought during glacial periods. The instability of the actual climate, which is characterized by multi-annual wet and dry periods, has a strong impact on distribution, community structure and population size of many plant and animal species and hinders spatial segregation of populations. The dependence of the system on the flood pulse makes the Pantanal very vulnerable to human induced changes in hydrology and the predicted changes in global climate

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“…However, although reduced, the upper wing bar appears to be as bright as the lower one, again suggesting C. virens. Finally, C. sordidulus is thought to winter primarily on the Andean slopes from 400 to 1700 m a.s.l., while C. virens is more widespread in the adjacent lowlands, especially in western Amazonia (Stotz et al, 1992;Ridgely & Tudor, 2009). Hence, the latter is the most likely species to be expected in eastern South America.…”

Section: Discussionmentioning

confidence: 99%

Four decades after Belton: a review of records and evidences on the avifauna of Rio Grande do Sul, Brazil

Franz

Agne

Bencke

et al. 2018

Iheringia, Sér. Zool.

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ABSTRACT. We present a new update of the list of birds of the state of Rio Grande do Sul, Brazil, based on a thorough review of new records and evidences accumulated from February 2011 to July 2017. This is the fifth update since the first compilation based on a reasonably complete geographic coverage of the state, published by William Belton in 1978, and the second produced by a regional (informal) committee. It is also the first to widely use citizen science contributions available on shared portals and digital databases on the internet. Forty-three taxa were added, resulting in a final list with 704 species, 6.5% more than in the previous assessment in 2010. Two species were replaced due to taxonomic changes. Documentation for inclusions based on unpublished records is indicated or published here. We also updated the documentation of another 20 species previously included in the list. Inclusions represent mainly migrants recorded in the state as vagrants or irregular visitors (22), but also cases of recent range expansion (especially from the north) and previously overlooked resident or migratory taxa. The average rate of additions (over six species per year) was 30% higher than in the previous period and is expected to accelerate. The percentage of accepted species without documented records in the state decreased from 1.8% in 2010 to 0.7% in the current list. We attribute these results to a better spatial and temporal coverage of the state in recent years, mainly due to the increasing contribution of amateurs, who accounted for 60% of the new occurrences. In contrast, the percentage of species documented by museum specimens has decreased steadily over time (currently at 84%). Investment in scientific research and collection of voucher specimens in the state should keep pace with the growing interest birds arouse in society, due to the importance and usefulness of museum specimens.KEYWORDS. Avifauna, checklist, new occurrence, distribution, documentation.RESUMO. Quatro décadas após Belton: uma revisão de registros e evidências sobre a avifauna do Rio Grande do Sul, Brasil. Apresentamos uma nova atualização da lista das aves do estado do Rio Grande do Sul, Brasil, a partir da revisão de novos registros e evidências acumuladas no período de fevereiro/2011 a julho/2017. Esta é a quinta atualização desde a primeira compilação baseada em uma cobertura geográfica razoavelmente completa do estado, publicada por William Belton em 1978, e a segunda produzida por um comitê regional (informal). Também é a primeira a usar amplamente contribuições da ciência cidadã disponíveis em portais de compartilhamento e bases de dados digitais na internet. Foram adicionados 43 táxons, resultando em uma lista final com 704 espécies, 6,5% a mais do que na versão anterior (de 2010). Duas espécies foram substituídas devido a alterações taxonômicas. A documentação para as inclusões baseadas em registros não publicados é indicada ou apresentada aqui. Também atualizamos a documentação de outras 20 espécies previamente incluídas na lista. ...

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The Status of North American Migrants in Central Amazonian Brazil

Cited by 51 publications

References 6 publications

Spatial distribution and habitat of the Anavilhanas Archipelago bird community in the Brazilian Amazon

Spatial distribution and habitat of the Anavilhanas Archipelago bird community in the Brazilian Amazon

Biodiversity and its conservation in the Pantanal of Mato Grosso, Brazil

Four decades after Belton: a review of records and evidences on the avifauna of Rio Grande do Sul, Brazil

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