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Especiación del fósforo en sedimentos de un río trop...

Created: 2016-08-01 00:45:56

Credits: William Senior

License: Creative Commons Attribution-Share Alike 3.0 Unported License

File type: Adobe PDF

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Comportamiento de los metales trazas Cu, P... (1)

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The concentrations of the metalsCu, Pb, Mn and Zn in fra ctions geochemistry insix sediment core of the lagoon Unare, Venezuela.A procedure of sequential extraction of metalswas determined, for each fraction was usedreagents different and conditions of digestionand the concentrations of metals determinedwith spectrophotometer of Atomic Absorption.The fractionating of metals indicated an order ofdecreasing concentration as it follows: residualfraction > organic/sulfur matter > carbonates...

Created: 2016-03-19

Credits: William Senior

Coastal and Marine Water Quality Indicator... (1)

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The Workshop “Coastal and Marine Water Quality Indicators and Methodologies to DeterminePollutant Loads in the Wider Caribbean” took place in Havana, Cuba, with the following objectives:? Analyse methodologies used to determine pollutant loads in the marine environment from pointand non-point sources and the main coastal and marine water quality indicators.? Discuss methodologies used for the characterization and quantification of municipal andindustrial solid wastes.? Present pre...

Created: 2016-03-19

Credits: William Senior

PRINCIPALES FUENTES DE CONTAMINACIÓN DEL R... (1)

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El Manzanares es uno de los principales ríos de Venezuela. Está ubicado en la región nor-oriental del país.

Created: 2016-03-19

Credits: William Senior

PRINCIPALES FUENTES DE CONTAMINACIÓN DEL R... (1)

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El río Manzanares es uno de los más importantes de Venezuela. Está ubicado en la región nor-oriental,en el Estado Sucre. Posee una cota máxima de 2.200,oo msnm, en el Cerro Las Peonias y una mínimade 00,oo msnm en el Golfo de Cariaco, con una longitud de cauce de 81 km, pendiente mínima de 15%y gasto medio de 1,23 m3/s. Existe una precipitación media anual de 1.328,10 mm, con evaporación de1.929,4 mm (MARNR, 1998). Según el...

Created: 2016-03-19

Credits: William Senior

Phytobenthos and macrophytes of the Manzan... (1)

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A phytobenthos and macrophytes checklist was carried at the Manzanaresriver basin, Sucre state, Venezuela, from November 2003 to July 2005. Collectwas accomplished manually and material was examined with a stereoscopicloupe and a microscope. With artificial key aid, 21 phytobenthos andmacrophytes species: 4 Cyanophyta, 9 Chlorophyta, 1 Heterokontophyta, 2Rhodophyta, 3 Bryophyta and 2 Magnoliophyta were identified. The basin lowersof the Manzanares presented the higher species number, being th...

Created: 2016-03-19

Credits: William Senior

NIVELES DE METALES PESADOS EN SEDIMENTOS S... (1)

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To evaluate the water quality along the continental shoresof Venezuela, where fishing communities exploit the clam Tivelamactroides, the concentration of heavy metals (Cu, Mn, Fe, Zn,Cd, Ni, Pb y Cr) was determined in superficial sediments,together with environmental factors (temperature, salinity,dissolved O2, pH, phytoplanctonic biomass, seston, and total Nand P) of the litoral waters of Playa Güiria on the northeasterncoast (Sucre State), and of Río Chico and Boca de Paparo (Mi...

Created: 2016-03-19

Credits: William Senior

MANUAL DE ANÁLISIS DE AGUA DE MAR (1)

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Se describen métodos para el análisis de agua de mar

Created: 2016-03-19

Credits: William Senior

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Studies of dissolved carbohydrates (or carbohydrate-...

Created: 2016-03-19 15:31:57

Credits: William Senior

License: Creative Commons Attribution-Share Alike 3.0 Unported License

File type: Adobe PDF

Comments: 0 | Viewed: 19 times | Downloaded: 5 times

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Growth of the tropical scallop, Euvola (Pe... (1)

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We compared the growth of the scallop Euuolu (Pecten) ziczuc (L.) in three situations whichpotentially could be used for commercial culture, in cages maintained in suspension, in cages on thebottom and in cages partly buried in a sediment bottom. The latter permitted the scallops to burythemselves as in their natural habitat. Throughout the 7-month study, growth, as measured by shelllength and muscle mass, was by far superior for scallops in the partly buried cages. Possible explanationsfor t...

Created: 2016-03-19

Credits: William Senior