Influence of riverine outputs on sandy beaches of Higuerote, central coast of Venezuela
Influencia de aportes fluviales en playas arenosas de Higuerote, costa central de Venezuela
| dc.contributor | en-US | |
| dc.contributor | es-ES | |
| dc.creator | Herrera, Antonio | |
| dc.creator | Bone, David | |
| dc.date | 2011-11-11 | |
| dc.date.accessioned | 2020-11-05T13:23:22Z | |
| dc.date.available | 2020-11-05T13:23:22Z | |
| dc.identifier | http://lajar.ucv.cl/index.php/rlajar/article/view/vol39-issue1-fulltext-6 | |
| dc.identifier | 10.3856/vol39-issue1-fulltext-6 | |
| dc.identifier.uri | https://revistaschilenas.uchile.cl/handle/2250/158197 | |
| dc.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 region 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-1 total 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. | en-US |
| dc.description | Para evaluar los aportes del río Tuy sobre los procesos costeros en playas arenosas cercanas, se examinó en dos campañas de muestreo, las características fisicas y químicas a nivel de agua y sedimento en ocho estaciones ubicadas a lo largo de la costa centro norte de Venezuela, el cauce de los ríos que allí desembocan (Tuy, Capaya, Curiepe), además del comportamiento de la pluma del río Tuy mediante sensores remotos y su influencia sobre las poblaciones de la almeja Tivela mactroides en cuanto a abundancia y estructura de talla. El río Tuy tuvo mayor predominio sobre la zona costera (789,15 ± 190,63 km2), presentó el mayor aporte líquido (246,39 m3 s-1), de nutrientes (659,61 ± 503,27 g s-1 nitrógeno total; 52 ± 53,09 g s-1 fósforo total) y material sedimentario (9320,84 ± 9728,15 g s-1). Existe un gradiente espacial de las variables medidas a lo largo de la costa (salinidad, nitrógeno y fósforo total, pH, turbidez, carbono orgánico total). Tivela mactroides presentó mayor biomasa y densidad (9126,8 ± 1562 g m-2; 9222,22 ± 1976,72 ind m-2) en las estaciones alejadas de la desembocadura de los ríos, y presentó menores tallas (< 13 mm) en estaciones cercanas a la desembocadura de los ríos. Se concluye que la pluma del río Tuy modula el funcionamiento del sistema costero, mediante el aporte de nutrientes y material sedimentario en el agua, distribuyéndose mediante las corrientes marinas y el transporte litoral. Esto es aprovechado por las poblaciones de Tivela mactroides, presentando altas abundancias y diferenciación en la estructura de tallas a lo largo de la costa. | es-ES |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Pontificia Universidad Católica de Valparaíso | en-US |
| dc.relation | http://lajar.ucv.cl/index.php/rlajar/article/view/vol39-issue1-fulltext-6/40 | |
| dc.source | Latin American Journal of Aquatic Research; Vol 39, No 1 (2011); 56-70 | en-US |
| dc.source | Plataforma para envío de artículos - Latin American Journal of Aquatic Research; Vol 39, No 1 (2011); 56-70 | es-ES |
| dc.source | 0718-560X | |
| dc.source | 0718-560X | |
| dc.subject | en-US | |
| dc.subject | nutrients; river plume; physical and chemical gradient; Tivela mactroides; biomass; size structure; Venezuela | en-US |
| dc.subject | es-ES | |
| dc.subject | nutrientes, pluma del río, gradiente físico y químico, Tivela mactroides, biomasa, estructura de talla, Venezuela | es-ES |
| dc.title | Influence of riverine outputs on sandy beaches of Higuerote, central coast of Venezuela | en-US |
| dc.title | Influencia de aportes fluviales en playas arenosas de Higuerote, costa central de Venezuela | es-ES |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | en-US | |
| dc.type | es-ES | |
| dc.coverage | en-US | |
| dc.coverage | en-US | |
| dc.coverage | en-US | |
| dc.coverage | es-ES | |
| dc.coverage | es-ES | |
| dc.coverage | es-ES |