Características hidrográficas del sistema lagunar los micos-quemada en el Caribe hondureño
Fecha
2009-12
Autores
Brenes Rodríguez, Carlos L.
BENAVIDES, ROSARIO
Ballestero, Daniel
Ballestero Sakson, Daniel
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Editor
Universidad Nacional (Costa Rica)
Resumen
Auspiciado por el Proyecto PREPAC (Plan Regional de Pesca y Acuicultura Continental) se realizó un levantamiento hidrográfico en 27 estaciones en el sistema lagunar Los Micos-Quemada en el litoral Caribe de Honduras. Los muestreos mensuales se extendieron de octubre del 2005 a mayo del 2006 y se determinaron la temperatura, el pH, el oxígeno disuelto, la salinidad y la turbidez. La temperatura superficial osciló entre los 24.2 y 31.8°C, con variaciones temporales extremas del orden de los 7°C. Los valores más bajos se ubican al final y principio de año (octubre-febrero). La salinidad superficial presenta un marcado ciclo estacional, con valores superiores a 12 durante los meses secos en prácticamente todo el cuerpo de agua, mientras que en la época lluviosa (octubre a febrero) están alrededor de 6. Los valores de pH encontrados para el período de estudio se ubicaron entre los 7.8 y 8.7. Los valores más altos se localizan en la zona central del sistema lagunar y los más bajos en las zonas cercanas a las orillas. Los máximos valores de turbidez se observan en febrero y diciembre. La zona con aguas más claras se localiza en la región cercana a la Barra de Miami en el lado noroeste de la laguna. El oxígeno
superficial varió entre 5.0 mg/L y 7.6 mg/L durante los meses de octubre a febrero. La variación temporal del oxígeno disuelto muestra que los máximos y mínimos para todo el período de estudio se localizaron en octubre y mayo, respectivamente.
A hydrographic survey funded by PREPAC (Plan Regional de Pesca y Acuicultura Continental) was carried out in the Micos-Quemada lagoon system in the Caribbean coast of Honduras. From October 2005 to May 2006 27 sampling stations were occupied to measure pH, dissolved oxygen, salinity, and turbidity. Surface temperatures were between 24.2 and 31.8°C during the sampling period, with extreme temporal variations close to 7°C. Minimum temperatures were observed between October and February. Surface salinity showed a clear seasonal cycle, with values greater than 12 during the dry months virtually over the entire body of water, while du ring the rainy season (October to February) salinity values were around 6. Values for pH were between 7.8 and 8.7 during the study. The highest pH values were found in the central area of the lagoon system and the lowest in the areas close to the banks, likely due to the degradation of organic matter and to the contribution from the tributary. Maximum turbidity was observed in February and December, while the area with clearest water was located near the bar. Surface oxygen concentration varied between 5.0 and 7.6 mg/L from October to February. Maximum and minimum values of dissolved oxygen were observed in October and May, respectively.
A hydrographic survey funded by PREPAC (Plan Regional de Pesca y Acuicultura Continental) was carried out in the Micos-Quemada lagoon system in the Caribbean coast of Honduras. From October 2005 to May 2006 27 sampling stations were occupied to measure pH, dissolved oxygen, salinity, and turbidity. Surface temperatures were between 24.2 and 31.8°C during the sampling period, with extreme temporal variations close to 7°C. Minimum temperatures were observed between October and February. Surface salinity showed a clear seasonal cycle, with values greater than 12 during the dry months virtually over the entire body of water, while du ring the rainy season (October to February) salinity values were around 6. Values for pH were between 7.8 and 8.7 during the study. The highest pH values were found in the central area of the lagoon system and the lowest in the areas close to the banks, likely due to the degradation of organic matter and to the contribution from the tributary. Maximum turbidity was observed in February and December, while the area with clearest water was located near the bar. Surface oxygen concentration varied between 5.0 and 7.6 mg/L from October to February. Maximum and minimum values of dissolved oxygen were observed in October and May, respectively.
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Palabras clave
LAGUNAS, HIDROGRAFÍA, HONDURAS, LAGOONS, HYDROGRAPHY