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Equipe técnica: Tarcísio Ewerton Rodrigues; João Marcos Lima da Silva; Moacir Azevedo Valente; Sandra Maria Neiva Sampaio; Antonio Guilherme e Soares Campos. Parte de: RODRIGUES, T. E.; GAMA, J. R. N. F.; SILVA, J. M. L. da; CARDOSO JÚNIOR, E. Q. Caracterização e classificação dos solos do Pólo Acre I. Área de Rio Branco, Estado do Acre. Belém, PA: Embrapa Amazônia Oriental, 2003. 64 p. (Embrapa Amazônia Oriental. Documentos, 153). |
Tipo: Mapas |
Palavras-chave: Rio Branco; Acre; Solo. |
Ano: 2002 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/991762 |
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Thomé-Souza,Mario J. F.; Chao,Ning Labbish. |
Spatial and temporal variation in the benthic fish composition, species richness, density and biomass were studied in the lower rio Branco and its confluence with the rio Negro during the 1997-98 dry season (September to February). Samples were taken with a 5.28 m (16-ft) otter trawl in three expeditions and at two depth strata (<7m and >7m). Five to seven trawl hauls were made randomly in each sample site per expedition. A total of 58 trawls yielded 134 species, 5,657 individuals and 22 kg total biomass. Fishes were distributed in 25 families and seven orders. Siluriformes was the most specious with 59 species, followed by Gymnotiformes (30), Characiformes (30), Perciformes (9), Clupeiformes (4), Pleuronectiformes (1) and Tetraodontiformes (1). The... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Main channel river; Otter trawl; Rio Branco; El-Niño phenomenon. |
Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000300004 |
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Borges,Sérgio Henrique; Whittaker,Andrew; Almeida,Ricardo Afonso Machado de. |
We inventoried the birds from Serra do Aracá region, state of Amazonas. The region encompasses a high diversity of vegetation types, including white sand forests and campinas, terra firme and flooded forests, montane forests and tepuis. We recorded 416 bird taxa in 69 families through captures with mist nets, tape recording of bird voices, and collection of voucher specimens. A large proportion of them (61%) were recorded in a single vegetation type. Qualitative estimates suggest that approximately 580 bird species occur in the region. The avifauna of the Aracá region has a mixed biogeographic composition, with species typical of both margins of the Rio Negro occurring sympatrically. Additionally, species whose distributions are restricted to three areas... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon biodiversity; Amazonas; Rio Branco; Rio Negro; Tepuis; White sand campinas. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000400006 |
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