Results 21 to 30 of about 364,271 (240)

Microlobiusxylon paranaensis gen. et sp. nov. (fabaceae, mimosoideae) from the pliocene-pleistocene of ituzaingó formation, paraná basin, Argentina [PDF]

open access: yes, 2010
A fossil wood with Fabaceae affinity from the Pliocene-Pleistocene sediments of Ituzaingó Formation is described. The silicified wood was collected at the Toma Vieja fossil locality, Paraná Basin, Argentina.
Brea, Mariana, Franco, María Jimena
core   +1 more source

Taxonomy of Triportheus (Ostariophysi: Triportheidae) from the Paraná-Paraguai basin, South America [PDF]

open access: yesNeotropical Ichthyology
A taxonomic review of Triportheus from the Paraná-Paraguai basin was conducted, with four valid species recognized: two natives, one introduced in the upper rio Paraná basin, and one new species described herein.
Douglas Alves Lopes   +1 more
doaj   +1 more source

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+2 more sources

Prospecção do molusco invasor Limnoperna fortunei (Dunker, 1857) nos principais corpos hídricos do estado do Paraná, Brasil

open access: yesPapéis Avulsos de Zoologia, 2010
Foram realizadas coletas nos principais corpos hídricos do Paraná objetivando a prospecção de larvas do mexilhão dourado, Limnoperna fortunei (Dunker, 1857).
Debora Pestana   +3 more
doaj   +1 more source

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

open access: yesNeotropical 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

Assessment of broiler chicken welfare in Southern Brazil [PDF]

open access: yes, 2016
Scientific literature on broiler chicken welfare in Brazilian industrial systems is scarce. This study aimed at assessing broiler chicken welfare on industrial farms in the State of Rio Grande do Sul, Southern Brazil, using the Welfare Quality (R ...
Federici, JF   +5 more
core   +3 more sources

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

open access: yesRevista 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   +1 more
doaj   +1 more source

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

open access: yesGeoTextos
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   +2 more
doaj   +1 more source

A INFLUÊNCIA DA INUNDAÇÃO NA DINÂMICA DA VEGETAÇÃO DA PLANÍCIE FLUVIAL DO ALTO RIO PARANÁ EM 2007

open access: yesRevista Brasileira de Geomorfologia, 2013
A distribuição da vegetação da planície fluvial do rio Paraná é controlada pelas formas de relevo, pela dinâmica fluvial e pela ação antrópica. A dinâmica fluvial exerce sua influência por meio da variação do nível de água, responsável pela expansão ou ...
Everton Hafemann Fragal   +2 more
doaj   +1 more source

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

open access: yesThe 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   +3 more
wiley   +1 more source

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