Results 131 to 140 of about 755 (165)
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Atmospheric Environment, 2019
Abstract The “Llanos” is a complex savanna ecosystem that occupies most of the Orinoco River Basin, from the Colombian Andes foothills almost to the Orinoco River Delta at the Atlantic Ocean in Venezuela. It undergoes periodic, human-induced and natural biomass burning during the dry season, which is shorter in Colombia.
Dien Wu +2 more
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Abstract The “Llanos” is a complex savanna ecosystem that occupies most of the Orinoco River Basin, from the Colombian Andes foothills almost to the Orinoco River Delta at the Atlantic Ocean in Venezuela. It undergoes periodic, human-induced and natural biomass burning during the dry season, which is shorter in Colombia.
Dien Wu +2 more
exaly +2 more sources
The freshwater habitats, fishes, and fisheries of the Orinoco River basin
Aquatic Ecosystem Health & Management, 2007The Orinoco River of Venezuela and Colombia is one of the great rivers of the world, ranking third by discharge after the Amazon and the Congo. In the Orinoco basin, riverine and floodplain habitats, including riparian forests, play key roles in the conservation of biodiversity and support commercial, sport, and subsistence fisheries. The basin's three
Marco A. Rodríguez +3 more
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Orinoco River Basin Report Card 2016
2016This report card provides a transparent, timely, and geographically detailed assessment of the Orinoco River Basin. In 2016, the report card includes eleven indicators in the categories of Biodiversity, Management & Governance, Ecosystems & Landscapes, Economy, People & Culture, and Water.
Costanzo, Simon +2 more
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Orinoquia: The Archaeology of the Orinoco River Basin
Journal of World Prehistory, 2002Orinoquia is one of the most important riverine ecosystems complexes of the world. However, it has been seldom recognized as an ecological or historical entity in general accounts of South American archaeology. This essay reviews systematically and comparatively the archaeology of Orinoquia, by discussing research done from the 1940s onwards in all the
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Orinoco and Amazon River sediment input to the eastern Caribbean Basin
Marine Geology, 1985Abstract Carbonate and mineralogic analyses of piston cores from Aves Ridge, eastern Caribbean Basin, reveal climatically modulated relationship among Quaternary carbonate deposition and terrigenous sediment influxes from the Orinoco and Amazon Rivers. Low carbonate content and dark sediment color, extending into the Pleistocene, suggest considerable
Frederick A. Bowles, Peter Fleischer
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First-Cycle Quartz Arenites in the Orinoco River Basin, Venezuela and Colombia
The Journal of Geology, 1988Modern first-cycle quartz arenites are forming in the Orinoco drainage basin by at least two distinct mechanisms. Common to both mechanisms is an environment of intense chemical weathering and extended time over which weathering can occur. In the Llanos (Andean foreland basin), extended time is provided by temporary storage of orogenically derived ...
Mark J. Johnsson +2 more
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Orinoco revisited: Comprehensive analysis of the Orinoco River basin present and future hydroclimate
AtmósferaThe Orinoco River basin, ranked as South America’s third-largest catchment, is pivotal in contributing to the Atlantic Ocean’s water volume. This study provides a comprehensive update on the basin’s surface water balance, examining trends using gridded precipitation and total evaporation datasets.
Alejandro Builes-Jaramillo +3 more
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Tropical floodplain agroforestry systems in mid-Orinoco River basin, Venezuela
Agroforestry Systems, 1994Agricultural studies in seasonally flooded areas in the tropics have been limited. Orinoco alluvial soils are more fertile than adjacent non-flooded soils, and have been considered as potential areas for further agricultural development. Traditional agroforestry practices offer some possibilities to overcome the most limiting factors of floodplain ...
E. Barrios, R. Herrera, J. L. Valles
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Zootaxa, 2019
Three species of Camelobaetidius Demoulin, 1966 have been reported from Colombia until now, based on nymphs. We describe a fourth species based on nymphs from the Colombian Orinoco river basin. The new species can be recognized by: 1) labrum narrowly rounded anteriorly; 2) segment II of labial palp with a short rounded distomedial projection; 3 ...
Salinas-Jimenez, Luis Gonzalo +4 more
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Three species of Camelobaetidius Demoulin, 1966 have been reported from Colombia until now, based on nymphs. We describe a fourth species based on nymphs from the Colombian Orinoco river basin. The new species can be recognized by: 1) labrum narrowly rounded anteriorly; 2) segment II of labial palp with a short rounded distomedial projection; 3 ...
Salinas-Jimenez, Luis Gonzalo +4 more
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Accounting for ecosystem assets using remote sensing in the Colombian Orinoco River Basin lowlands
Journal of Applied Remote Sensing, 2016In many parts of the world, ecosystems change compromises the supply of ecosystem services (ES). Better ecosystem management requires detailed and structured information. Ecosystem accounting has been developed as an information system for ecosystems, using concepts and valuation approaches that are aligned with the System of National Accounts (SNA ...
Vargas Barbosa, Leonardo +2 more
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