Results 11 to 20 of about 755 (165)

Home range and movements of Amazon river dolphins Inia geoffrensis in the Amazon and Orinoco river basins [PDF]

open access: yesEndangered Species Research, 2021
Studying the variables that describe the spatial ecology of threatened species allows us to identify and prioritize areas that are critical for species conservation.
F Mosquera-Guerra   +14 more
doaj   +2 more sources

Ichthyofauna of piedmont and savannah environments in the Casanare River drainage, Orinoco Basin, Colombia

open access: yesBiota Colombiana, 2018
Currently, only 20 fish species have been recorded from the Casanare River, which is one of the main tributaries of the Meta River drainage. To characterize the fish assemblages of this river, samplings were carried out at 35 collecting stations in low ...
Jhon Zamudio   +4 more
doaj   +2 more sources

Fishes of the Tomo river, Orinoco basin, Colombia

open access: yesBiota Colombiana, 2006
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Javier Alejandro Maldonado-Ocampo   +7 more
doaj   +2 more sources

Linking planetary boundaries and ecosystem accounting, with an illustration for the Colombian Orinoco river basin. [PDF]

open access: yesReg Environ Change, 2018
Economic development has increased pressures on natural resources during the last decades. The concept of planetary boundaries has been developed to propose limits on human activities based on earth processes and ecological thresholds. However, this concept was not developed to downscale planetary boundaries to sub-global level.
Vargas L, Willemen L, Hein L.
europepmc   +6 more sources

Composition and fish species richness in piedmont streams and rivers of the Cusiana River drainage in the Colombian Orinoco River Basin

open access: yesBiota Colombiana, 2014
In order to provide information on the composition and richness of fish in the Colombian Orinoco piedmont (Tauramena - Casanare), collections were made every two months (June 2012 - February 2013), and standardized (arts-length-time), for six streams and
Alexander Urbano-Bonilla   +4 more
doaj   +2 more sources

A new species of Hyphessobrycon (Characiformes, Characidae) from the upper Guaviare River, Orinoco River Basin, Colombia. [PDF]

open access: yesZookeys, 2017
Hyphessobrycon klausannisp. n. is described from small drainages of the upper Guaviare River (Orinoco River Basin) in Colombia. It differs from all congeners by having a wide, conspicuous, dark lateral stripe extending from the anterior margin of the eye across the body and continued through the middle caudal-fin rays, and that covers (vertically ...
García-Alzate CA   +2 more
europepmc   +5 more sources

The Negative Impact of Biomass Burning and the Orinoco Low-Level Jet on the Air Quality of the Orinoco River Basin

open access: yesAtmósfera, 2021
Biomass burning (BB) is a common activity in developing countries and has been identified as a serious air pollution threat. The present work evaluates the air quality of the largest town in the extensive Colombian savannas (250,000 km2) for the first time, from measurements over three consecutive years (2017-2020).
Camila Rodríguez-Gómez   +3 more
openaire   +2 more sources

HEMIBRYCON GUEJARENSIS, A NEW SPECIES FROM THE GÜEJAR RIVER, ORINOCO BASIN, COLOMBIA (CHARACIFORMES: CHARACIDAE) WITH A REVIEW THE POPULATIONS IDENTIFIED AS HEMIBRYCON METAE

open access: yesRevista 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
doaj   +1 more source

Trichomycterus venulosus (Steindachner, 1915): posible extint species from the páramo de Cruz Verde (Cundinamarca, Colombia)

open access: yesBiota 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   +8 more sources

A long-hidden species of Pimelodella (Siluriformes: Heptapteridae) from the upper and middle Orinoco, and western Amazon tributaries [PDF]

open access: yesNeotropical Ichthyology
A 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
doaj   +1 more source

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