Influence of riverine outputs on sandy beaches of Higuerote, central coast of Venezuela

The influence of riverine outputs from the Tuy River on the coastal processes of near sandy beaches was assessed by measuring the physical and chemical characteristics of water and sediment samples at eight sites along the north central Venezuelan coast and from the rivers that flow through this reg...

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Autores principales:	Herrera,Antonio, Bone,David
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2011
Materias:	nutrients river plume physical and chemical gradient Tivela mactroides biomass size structure Venezuela
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2011000100006
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spelling	oai:scielo:S0718-560X20110001000062011-04-14Influence of riverine outputs on sandy beaches of Higuerote, central coast of VenezuelaHerrera,AntonioBone,David nutrients river plume physical and chemical gradient Tivela mactroides biomass size structure Venezuela The influence of riverine outputs from the Tuy River on the coastal processes of near sandy beaches was assessed by measuring the physical and chemical characteristics of water and sediment samples at eight sites along the north central Venezuelan coast and from the rivers that flow through this región into the sea (Tuy, Capaya, Curiepe) during two field surveys. In addition, the behavior of the Tuy River discharge plume was evaluated using remote sensors, and its effect on the population abundance and size structure of the clam Tivela mactroides was determined. Of the three rivers evaluated, the Tuy River had the highest impact on the coastal zone (789.15 ± 190.63 km²) in terms of flow rate (246.39 m³ s-1), nutrients (659.61 ± 503.27 g s-1total nitrogen; 52 ± 53.09 g s-1 total phosphorus) and sedimentary material (9320.84 ± 9728.15 g s-1). The variables measured (salinity, total nitrogen and phosphorus, pH, turbidity, and total organic carbon) showed a spatial gradient along the coast. Tivela mactroides had the highest biomass and density (9126.8 ± 1562 g m-2; 9222.22 ± 1976.72 ind m-2 ) at the sites farthest from the river mouths and smaller sizes (< 13 mm long) at sites close to the river mouths. The Tuy River plume modifies the functioning of the coastal system processes by discharging large amounts of nutrients and sedimentary material into the water column, which are then distributed by marine currents and alongshore transport. These contributions are used by T. mactroides populations, which show high abundances and differentiation in size structure along this coastline.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.39 n.1 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2011000100006en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	nutrients river plume physical and chemical gradient Tivela mactroides biomass size structure Venezuela
spellingShingle	nutrients river plume physical and chemical gradient Tivela mactroides biomass size structure Venezuela Herrera,Antonio Bone,David Influence of riverine outputs on sandy beaches of Higuerote, central coast of Venezuela
description	The influence of riverine outputs from the Tuy River on the coastal processes of near sandy beaches was assessed by measuring the physical and chemical characteristics of water and sediment samples at eight sites along the north central Venezuelan coast and from the rivers that flow through this región into the sea (Tuy, Capaya, Curiepe) during two field surveys. In addition, the behavior of the Tuy River discharge plume was evaluated using remote sensors, and its effect on the population abundance and size structure of the clam Tivela mactroides was determined. Of the three rivers evaluated, the Tuy River had the highest impact on the coastal zone (789.15 ± 190.63 km²) in terms of flow rate (246.39 m³ s-1), nutrients (659.61 ± 503.27 g s-1total nitrogen; 52 ± 53.09 g s-1 total phosphorus) and sedimentary material (9320.84 ± 9728.15 g s-1). The variables measured (salinity, total nitrogen and phosphorus, pH, turbidity, and total organic carbon) showed a spatial gradient along the coast. Tivela mactroides had the highest biomass and density (9126.8 ± 1562 g m-2; 9222.22 ± 1976.72 ind m-2 ) at the sites farthest from the river mouths and smaller sizes (< 13 mm long) at sites close to the river mouths. The Tuy River plume modifies the functioning of the coastal system processes by discharging large amounts of nutrients and sedimentary material into the water column, which are then distributed by marine currents and alongshore transport. These contributions are used by T. mactroides populations, which show high abundances and differentiation in size structure along this coastline.
author	Herrera,Antonio Bone,David
author_facet	Herrera,Antonio Bone,David
author_sort	Herrera,Antonio
title	Influence of riverine outputs on sandy beaches of Higuerote, central coast of Venezuela
title_short	Influence of riverine outputs on sandy beaches of Higuerote, central coast of Venezuela
title_full	Influence of riverine outputs on sandy beaches of Higuerote, central coast of Venezuela
title_fullStr	Influence of riverine outputs on sandy beaches of Higuerote, central coast of Venezuela
title_full_unstemmed	Influence of riverine outputs on sandy beaches of Higuerote, central coast of Venezuela
title_sort	influence of riverine outputs on sandy beaches of higuerote, central coast of venezuela
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2011000100006
work_keys_str_mv	AT herreraantonio influenceofriverineoutputsonsandybeachesofhiguerotecentralcoastofvenezuela AT bonedavid influenceofriverineoutputsonsandybeachesofhiguerotecentralcoastofvenezuela
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Influence of riverine outputs on sandy beaches of Higuerote, central coast of Venezuela

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