Results 181 to 190 of about 1,651,917 (208)
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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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2023
The ichthyofauna of the upper reaches of the Meta River, one of the main tributaries of the Orinoco, is still poorly known. This paper presents the first list of fishes recorded for the Ocoa River, based on 51 901 individuals sampled in 15 localities during the 2014 hydrological cycle, including urban areas in the municipality of Villavicencio ...
Ramírez-Gil, Hernando +2 more
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The ichthyofauna of the upper reaches of the Meta River, one of the main tributaries of the Orinoco, is still poorly known. This paper presents the first list of fishes recorded for the Ocoa River, based on 51 901 individuals sampled in 15 localities during the 2014 hydrological cycle, including urban areas in the municipality of Villavicencio ...
Ramírez-Gil, Hernando +2 more
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River Chemistry, Geology, Geomorphology, and Soils in the Amazon and Orinoco Basins
1985In the Amazon and Orinoco basins, the chemistry of rivers can be related to the geology of their catchments when geomorphic factors are taken into consideration. To a first order, erosion processes are seen to occupy a continuum between weathering-limited (steep slopes, thin soils) and transport-limited (slight slopes, thick soils).
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Unruliness at the Margins: Environment and Politics in the Lower Orinoco River Basin, 1600s - 1700s
2019This dissertation is a political, social, and environmental history of the easternmost portion of the Orinoco River Basin (present-day Venezuela and Guyana), which I call the lowerOrinoco, in the 1600s and 1700s. It integrates and analyzes Spanish efforts to colonize and exploit the region, the dynamism of the region’s constituent environments, and the
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As anthropogenic emissions of greenhouse gasses continue to increase, in 2024 we have experienced the hottest year on observational record globally, while the last ten years are the warmest ten years. Accelerating global climate change is intensifying the water cycle, leading to more frequent and/or severe droughts and floods as well as rapid ...
Neven Fučkar +3 more
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Neven Fučkar +3 more
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Journal of Environmental Economics and Policy, 2023
Francisco de Paula Gutiérrez Bonilla +2 more
exaly
Francisco de Paula Gutiérrez Bonilla +2 more
exaly