Results 31 to 40 of about 604,113 (275)

Fishes of the upper rio Paraná basin: diversity, biogeography and conservation

Neotropical Ichthyology
The upper rio Paraná basin drains the most developed and environmentally degraded region in South America: the Brazilian southeast. While it is one of the most well-known Neotropical fish assemblages, it is also one of the most threatened by anthropic ...
F. Dagosta, Maristela Sayure Monção, Bárbara Akemi Nagamatsu, C. S. Pavanelli, F. R. Carvalho, Flávio C. T. Lima, F. Langeani, G. Dutra, R. R. Ota, Thomaz Jefrey Seren, Victor A. Tagliacollo, N. Menezes, H. Britski, M. Pinna   +13 more
semanticscholar   +1 more source

Ichthyofauna of the Ribeirao Frutal and tributaries, upper Rio Parana basin, Minas Gerais, Southeastern Brazil

, 2018
The Ribeirão Frutal basin is located within the upper Rio Paraná system, in the Frutal municipality, Minas Gerais State, Southeastern Brazil. Until now, there was no complete ichthyological survey published for this small basin.
Valter M. Azevedo-Santos, P. N. Coelho, G. C. Deprá   +2 more
semanticscholar   +1 more source

Systematics and biogeography of the genus Phalloceros Eigenmann, 1907 (Cyprinodontiformes: Poeciliidae: Poeciliinae), with the description of twenty-one new species

Neotropical Ichthyology
The genus Phalloceros is revised. Phalloceros caudimaculatus (Hensel, 1868) and twenty-one new species are recognized in Phalloceros. The species and their distributions are: P. alessandrae, small coastal drainages of the Paraná State; P.
Paulo Henrique Franco Lucinda
doaj   +1 more source

Unrecognized biodiversity in a world’s hotspot: three new species of Melanorivulus (Cyprinodontiformes: Rivulidae) from tributaries of the right bank of the Rio Paraná basin, Brazilian Cerrado

, 2018
The genus Melanorivulus presents a wide geographical distribution in the Neotropical region. Among Melanorivulus, the M. pictus species group has currently 18 species distributed in the Brazilian Cerrado, mainly in the upper Rio Paraná basin, with some ...
M. Volcan, Francisco Severo-Neto, L. Lanés   +2 more
semanticscholar   +1 more source

A new species of Bryconamericus (Characidae: Stevardiinae: Diapomini) from the upper rio Paraná basin, Brazil

, 2017
Bryconamericus is the most diverse genus within Stevardiinae, comprising 61 valid species distributed in Cisand TransAndean basins from Panama in Central America to northern Argentina in South America.
F. C. Jerep, O. A. Shibatta
semanticscholar   +1 more source

Estatísticas descritivas de séries de vazão e cota fluviométrica: caracterização hidrológica do alto rio Paraná pós-barragem de Porto Primavera

GeoTextos
Este estudo apresenta uma análise estatística detalhada das séries históricas de vazão e cota fluviométrica do alto rio Paraná, obtidas na estação Porto São José (ANA), entre 1999 e 2019. O objetivo foi caracterizar a variabilidade hidrológica interanual
Alisson Santori, José Cândido Stevaux, Isabel Terezinha Leli   +2 more
doaj   +1 more source

Zooarqueologia dos grupos horticultores amazônicos no Rio Paraná inferior

, 2017
O objetivo deste trabalho e descrever e analisar a estrutura arqueofaunistica do sitio arqueologico Arroyo Fredes, o qual foi gerado por grupos de horticultores amazonicos correspondentes a denominada Tradicao Tupiguarani.
Alejandro Acosta, Leonardo Mucciolo
semanticscholar   +1 more source

Inside a duck‐billed dinosaur: Vertebral bone microstructure of Huallasaurus (Hadrosauridae), Upper Cretaceous of Patagonia

The Anatomical Record, EarlyView.
Abstract Dinosaurs evolved a unique respiratory system with air sacs that contributed to their evolutionary success. Postcranial skeletal pneumaticity (PSP) has been used to infer the presence of air sac systems in some fossil archosaurs. While unambiguous evidence of PSP is well documented in pterosaurs and post‐Carnian saurischians, it remains absent
Tito Aureliano, Aline M. Ghilardi, Jonatan Kaluza, Agustín G. Martinelli   +3 more
wiley   +1 more source

AVALIAÇÃO DA VELOCIDADE DE DESLOCAMENTO DE BARRAS FLUVIAIS DO RIO PARANÁ POR MEIO DE IMAGENS CBERS/CCD

Revista Brasileira de Geomorfologia, 2012
A formação do reservatório de Porto Primavera cortou o suprimento de sedimentos do rio Paraná. O primeiro efeito a ser observado foi a redução da carga suspensa e a seguir a progressiva retirada das formas de leito do rio.
Edvard Elias Souza Filho, Bruno Tiago Condessoto Rigon   +1 more
doaj   +1 more source

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

The Anatomical Record, EarlyView.
Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza, Marina Bento Soares, Luiz Carlos Weinschütz, Alexander Wilhelm Armin Kellner   +3 more
wiley   +1 more source