Results 41 to 50 of about 10,663 (217)
Acta Amazonica, 2009 Mercury and Lead concentrations obtained by ICP-OAS analysis of human hair from riverside communities along the Orinoco river in the Amazon state (Venezuela) were compared with those from Caracas, Venezuela.
Eunice Marcano +4 more
doaj +1 more source
Journal of Biogeography, Volume 53, Issue 9, September 2026.ABSTRACT Aim Eigenmannia is a monophyletic genus of small and medium‐sized fishes known as ‘glass knifefishes’, with a wide distribution throughout the Neotropical region and a complex taxonomic history. This study aimed to investigate the phylogenetic diversification patterns within the Eigenmannia humboldtii species group (specifically E. nigra and E.
Weverton John P. Santos +8 more
wiley +1 more source
Journal of Fish Biology, Volume 109, Issue 3, Page 1771-1785, September 2026.Abstract Pyrrhulina australis Eigenmann & Kennedy, 1903, is widely distributed across the main hydrographic basins of South America. The taxonomic integrity of this species is nevertheless challenged by the lack of clear diagnostic characters, its marked geographic variation and the morphological overlap with its congeners. In this context, the present
Taina Barbosa De Souza +6 more
wiley +1 more source
Estratigrafia e geocronologia do greenstone belt de Guarinos, Goiás
Geologia USP. Série Científica, 2012 O greenstone belt de Guarinos é uma das três faixas de rochas supracrustais de baixo grau metamórfico marginadas por ortognaisses do extremo norte do Bloco Arqueano de Goiás.
Hardy Jost +4 more
doaj +1 more source
, 2004 Published as part of Jonathan W. Armbruster, 2004, Pseudancistrus sidereus, a new species from southern Venezuela (Siluriformes: Loricariidae) with a redescription of Pseudancistrus., pp.
openaire +2 more sources
The influence of rivers on seabird foraging ecology
Biological Reviews, Volume 101, Issue 4, Page 1704-1734, August 2026.ABSTRACT Rivers act as vital arteries to the world's oceans, delivering fresh water and nutrients that sustain marine ecosystems. Globally, river flow increasingly is being altered by climate change and anthropogenic pressures; yet the significance of rivers to predatory marine species, such as seabirds, and the extent to which river‐related changes ...
Julia B. Morais +2 more
wiley +1 more source
Tortugas a la orilla del Orinoco
, 1880 Grabado basado en el diseño de H. Gobin a partir de un bosquejo elaborado por Eugène François Marie Lejanne que ilustra una tortuga a las orillas del Alto Orinoco en San Fernando de Atabapo, retratada en el marco de la expedición de Jules Crevaux (1880 ...
Gobin, H.; Lejanne, Eugène François Marie, 1848-1932;
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Patterns of Style, Diversity, and Similarity in Middle Orinoco Rock Art Assemblages
Arts, 2019 The area encompassed by the Orinoco river basin is home to some of the largest and most diverse rock art sites in lowland South America. In this paper, we aim to formally describe the spatial distribution and stylistic attributes of rock engravings and ...
Philip Riris, José Oliver
doaj +1 more source
Fine‐Tuning a Weather Foundation Model With Lightweight Decoders for Unseen Physical Processes
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.Abstract Recent advances in AI weather forecasting have led to the emergence of so‐called “foundation models”, typically defined by expensive pretraining and minimal fine‐tuning for downstream tasks. However, in the natural sciences, a desirable foundation model should also encode meaningful statistical relationships between the underlying physical ...
Fanny Lehmann +5 more
wiley +1 more source
, 1886 Mapa elaborado por Erhard Frères sobre el curso superior del río Orinoco, trayecto que sigue la expedición de Jean Chaffanjon entre 1886 y 1887. Se trata de una carta de índole hidrográfica cuyo punto focal es la distancia y el recorrido que toma el río ...
Erhard frères
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