Hydrochemistry of the surface waters at the Rincon River Basin, Osa Peninsula, Costa Rica
Vol 2. No 2 (2010)
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Aquatic ecosystem
aquatic chemistry
Costa Rica
Osa Peninsula
surface water
water quality
Rincon river.

How to Cite

Beita-SandíW., & Barahona-PalomoM. (2010). Hydrochemistry of the surface waters at the Rincon River Basin, Osa Peninsula, Costa Rica. UNED Research Journal, 2(2), 157-179. https://doi.org/10.22458/urj.v2i2.156


The Rincon River Basin is characterized by steep and rugged topography with outcrops of recent sediments as well as igneous and sedimentary rocks. The area is mostly covered by forest (Tropical Wet Forest) and agricultural land, with some scattered towns. The basin collects water from a total area of 209,8km2. Water samples were taken along the dry, transition and rainy seasons of 2004 and 2005, through six sampling campaigns and 11 selected sites in the study area. The waters are characterized by an average temperature of 26,8°C, and an average dissolved oxygen concentration of 7,7mg O2/L. The average electrical conductivity (EC) was 161,8μS/cm. They are moderately soft with a range of pH values between 6,62 and 8,17 and a maximum change of 0,5pH units. The bicarbonate concentration ranged from 54,3mg HCO3/L up to 160,8mg HCO3/L. They meet the criteria for calcium bicarbonate waters.
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Alabaster, J. S. & R. Lloyd. 1982. Water Quality Criteria for Fres¬hwater Fish. Butterworths, Londres, Inglaterra.

Aminot, A. & F. Andrieux. 1996. Concept and determination of exchangeable phosphate in aquatic sediments. Water Re¬source 30: 2805–2811.

ANZECC (Australian and New Zealand Environment Conservation Council). 2000. An introduction to the Australian and New Zealand guidelines for fresh and marine water qua¬lity. National Water Quality Management Strategy, Cam¬berra, Australia.

Bailey, R.G. 1980. Description of the Ecoregions of the United States. Departamento de Agricultura de los Estados Unidos, Ogden, Utah, EEU.

Barrantes, J., A. Liao & A. Rosales. 1985. Atlas Climatológico de Costa Rica. MAG-CORENA, San José , Costa Rica.

Barrios, L., T. Quesada, C. Pérez, A. Alfaro, A. Calero, J. Torres, A. Co¬sillo, E. Aguirre, D. Rodríguez, O. Arias, Y. Fallas & D. Ríos. 1988. Geología General de la Península de Osa, Costa Rica, Proyecto de Planificación del Parque Nacional Corcovado.

Bellos, D. & T. Sawidis. 2005. Chemical pollution monitoring of the River Pinios (Thessalia—Greece). Journal Environmental Management 76: 282–292.

Benoit, D. A. & Ch. E. Stephan. 1988. Ambient Aquatic Life Water Quality Criteria for Chloride. Agencia de Protección Ambiental de Estados Unidos, Duluth, Minnesota, EEUU.

Berránge, J.P. 1989. Origin of Gold from the Golfo Dulce Placer Province, Southern Costa Rica. Circum-Pacific Council for Energy and Mineral Resources, Earth Science Series 16: 299-304.

CCME (Canadian Council of Ministers of the Environment). 1999. Canadian Water Quality Guidelines for the Protection of Aquatic Life. Winnipeg, Canada.

CCME (Canadian Council of Ministers of the Environment). 2005. Canadian Water Quality Guidelines for the Protection of Aquatic Life: Phosphorus. Winnipeg, Canada.

Chapman, D. 1996. Water Quality Assessments - A Guide to Use of Biota, Sediments and Water in Environmental Monitoring. E & FN Spon, Cambridge, Inglaterra.

Dai, M., X. Guo, W. Zhai, L. Yuan, B. Wang, L. Wang, P. Cai, T. Tang & W. Cai. 2006. Oxygen depletion in the upper reach of the Pearl River estuary during a winter drought. Marine Chemistry 102: 159–169.

Denyer, P. & S. Kussmaul. 2000. Geología de Costa Rica. Tecnológica, Cartago, Costa Rica.

Drever, J. L. 1988. The Geochemistry of Natural Waters: Surface and Groundwater Environments. Prentice-Hall, Englewood Cliffs, Nueva Jersey, EEUU.

Eaton, A., L. S. Clesceri, E. W. Rice, A. E. Greenberg & M .A. Franson. 1998. Standard Methods for the Examination of Water and Wastewater. APHA, AWWA, WEF, Columbia, Washington, EEUU.

Guerrero, J. P., I. Pla-Sentís & R. Camacho. 2004. Génesis de un suelo sódico alcalino en Chaguaramas, Venezuela. Agronomía Tropical 54: 433-460.

Hammen, C.S. 1976. Estuarine Processes: Uses, Stresses, and Adaptations to the Estuary. Academic, Nueva York, Nueva York, EEU.

Herrera, W. 1985. Vegetación y clima de Costa Rica. EUNED, San José, Costa Rica.

Holdridge, L.R. 1982. Ecología basada en zonas de vida. IICA, San José, Costa Rica.

Holmes, S. 1996. South African Water Quality Guidelines. Volume 7: Aquatic Ecosystems. Departamento de Asuntos Hídricos y Forestales, Pretoria, Gauteng, Sudáfrica.

Iqbal, M.Z., E.J. Brown & M. E. Clayton. 2006. Distribution of phos¬phorus in a biologically restricted lake in Iowa, USA. Journal Hydrology 326: 349 - 366.

Jonnalagada, S. B., G. Mhere. 2001. Water Quality of the Odzi River in the Eastern Highlands of Zimbabwe. Water Resource 35: 2371-2376.

Kowalkowski, T., Z. Radoslaw, S. Jacek & B. Bogusław. 2006. Application of chemometrics in river water classification. Water Resource 40: 744 - 752.

Lopes, J.F., J. M. Dias, A. C. Cardoso & C. I. V. Silva. 2005. The water quality of the Ria de Aveiro lagoon, Portugal: From the observations to the implementation of a numerical model. Marine Environmental Research 60: 594-628.

McNeely, R. N., V. P. Neimanis & L. Dwyer. 1979. Water Quality Sourcebook: A guide to water quality parameters. Ottawa, Ottawa, Canada.

MINAE (Ministerio del Ambiente y Energía de Costa Rica) & MIN¬SA (Ministerio de Salud de Costa Rica). 2007. Decreto No. 33903-MINAE-S Reglamento para la Evaluación y Clasificación de la Calidad de Cuerpos de Agua Superficiales. San José, Costa Rica.

Ministerio del Ambiente. 2006. Water Quality: British Columbia Approved Water Quality Guidelines. Víctoria, Columbia Británica, Canadá.

Nagpal, N.K., D.A. Levy & D.D. MacDonald. 2003. Ambient water quality guidelines for chloride. Víctoria, Columbia Británica, Canadá.

Nordin, R. N. & L. W. Pommen. 1986. Water Quality Criteria for Nitrogen (Nitrate, Nitrite and Ammonia). Víctoria, Columbia Británica, Canadá.

OMS (Organización Mundial de la Salud). 2006. Guidelines for drinking Water Quality. Ginebra, Suiza.

Osorio, A. & R. Césped. 2002. Efecto de Métodos de riego loca¬lizado en la salinidad del perfil de suelo en Vid de Mesa: Conductividad Eléctrica, Sodio, Cloro y Boro en distintos puntos del perfil. Agricultura Técnica 60: 178-194.

Pérez, A.G. 2004. Evaluación de la Calidad de las Aguas de Dre¬naje del Sector de Riego de Tamarindo para el Manejo de Humedales en el parque Nacional Palo Verde. Tesis de Maestría, Universidad de Costa Rica, San José, Costa Rica.

Rosero, L., T. Maltodano & R. Bonilla. 2002. Bosque y Población en la Península de Osa. Revista Biología Tropical 50: 585-598.

Stumm, W. & J. J. Morgan. 1996. Aquatic Chemistry. Wiley, Nueva York, Nueva York, EEUU.

Thursby, G., D. Miller, S. Poucher, L. Coiro, W. Munns & T. Gleason. 2000. Ambient Aquatic Life Water Quality Criteria for Dissolved Oxygen (Saltwater): Cape Cod to Cape Aterras. Agencia de Protección Ambiental de Estados Unidos, Columbia, Washington, EE UU.

Umaña, G. 1998. Characterization of some Golfo Dulce drainage basin rivers (Costa Rica). Revista Biologia Tropical 46: 125.

USEPA (Agencia de Protección Ambiental de Estados Unidos). 2006. National Recommended Water Quality Criteria. Columbia, Washington, EE UU.

Vargas, G. 1989. Evaluación ecológica de Impactos Ambientales en la Explotación de Oro: Casos del río Tigre y Agujas, Pe¬nínsula de Osa, Costa Rica. Geoistmo 3: 81-93.

Williamson, D. 2002. Manitoba Water Quality Standards, Objetives and Guidelines. Winnipeg, Manitoba, Canadá.

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