Results 21 to 30 of about 1,651,917 (208)
Biota Colombiana, 2006 The investigation was carried out between November 2004 and August 2005, and was based on the rivers Teusaca, Idaza, La Laguna (Quebrada Blanca), del Salteador creek, Marlene creek (affluent of the del Salteador creek), Blanca creek (Mataredonda-Reserve)
Saúl Prada-Pedreros +2 more
doaj +10 more sources
Zoologia (Curitiba), 2010 Nine new species of Phenacogaster Eigenmann, 1907 are described: Phenacogaster capitulatus sp. nov. from the Neshuya River system, Ucayali River basin; Phenacogaster maculoblongus sp. nov. from the upper Cuyuni River, and tributaries of the lower Orinoco
Zilda Margarete Seixas de Lucena +1 more
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Revista de Investigaciones Universidad del Quindío, 2017 Hemibrycon guejarensis, new species, is described from the Güejar River, La Macarena mountain range, upper Guaviare River drainage, Colombia. The new species is distinguished from most cis-Andean congeners (H.
César Román-Valencia +2 more
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A long-hidden species of Pimelodella (Siluriformes: Heptapteridae) from the upper and middle Orinoco, and western Amazon tributaries [PDF]
Neotropical IchthyologyA new species of Pimelodella is described from the upper and middle basin of the Orinoco River, upper basin of Negro River, and upper basin of the Apaporis River.
Miguel Ángel Cortés-Hernández +4 more
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Seasonal and interannual variation of bacterial production in lowland rivers of the Orinoco basin [PDF]
Freshwater Biology, 2004 Summary1. We examined the influence of hydrologic seasonality on temporal variation of planktonic bacterial production (BP) in relatively undisturbed lowland rivers of the middle Orinoco basin, Venezuela. We sampled two clearwater and two blackwater rivers over 2 years for dissolved organic carbon (DOC), chlorophyll, phosphorus and bacterial abundance ...
Castillo, María M. +3 more
openaire +2 more sources
Biota Colombiana, 2009 Data derived from the literature supplemented with new collections made in the Inírida Fluvial Star (15th to 27th February 2008) reveal a species richness of 470 fishes species grouped in 224 genera, 40 families, and 10 orders.
Carlos A. Lasso +12 more
doaj +1 more source
Apistogramma megaptera (Perciformes: Cichlidae), una nueva especie para la cuenca del Orinoco
Biota Colombiana, 2011 We describe a new species, Apistogramma megaptera (Perciformes: Cichlidae) that occurs in the upper Orinoco River Basin, in the Inírida, Atabapo and Mavaca rivers of Venezuela and Colombia.
Lina M. Mesa Salazar, Carlos A. Lasso
doaj +1 more source
Neotropical IchthyologyThe arowanas, fishes of Gondwanan origin, are represented in South America by the genus Osteoglossum. All species were initially reported as being exclusive to the Amazon region, with O. ferreirai restricted to the Negro River basin and O. bicirrhosum to
Maria Doris Escobar L. +4 more
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Biota Colombiana, 2010 The Paria Gulf Basin ichthyofauna comprises 218 species arranged in 14 orders and 50 families. Among these, 155 species are considered strictly freshwater and 63 species are euryhaline.
Carlos A. Lasso +2 more
doaj +1 more source
Journal of Marine Science and Engineering, 2021 The dolphins Inia geoffrensis—boto and Sotalia fluviatilis—tucuxi are threatened cetaceans inhabiting river ecosystems in South America; population numbers are still lacking for many areas.
Mariana Paschoalini +10 more
doaj +1 more source