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| SCOTT,SERGIO; DORADOR,CRISTINA; OYANEDEL,JUAN PABLO; TOBAR,IGNACIO; HENGST,MARTHA; MAYA,GIANNINA; HARROD,CHRIS; VILA,IRMA. |
| This study examines the limnology and ecology of two high altitude wetlands, Lirima (19°51’24 S; 68°55’02 W; 4000 m asl) and Caya (20°37’21 S; 68°58’28 W; 3700 m asl), located in the Chilean Altiplano. Both wetlands are formed by the evaporitic remnant basins of paleolakes which occupied an extensive area of what today is known as the Altiplano. These systems have a negative hydrological balance, receiving their water from groundwater, snow melt and limited seasonal rains. An ongoing negative water balance and the sediment characteristics in the region have accelerated the salinization process in these systems, as shown by their present physicochemical characteristics. Nutrient values were typical of mesotrophic to... |
| Tipo: Journal article |
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| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382015000100006 |
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| AHUMADA,PATRICIO; ASTORGA,GUADALUPE; BULL-HEREÑU,KESTER; CABRERA,RICARDO; CAPUTO,LUCIANO; CARMONA,CARLOS; CECCHI,M. CLAUDIA; CORTÉS,NELSON; CORTEZ,SOLEDAD; DORADOR,CRISTINA; FREDES,FELIPE; GUERRERO-BOSAGNA,CARLOS; HENNY,PABLO; LIBEDINSKY,CAMILO; MARCELO,WARA; MÁRQUEZ,I. NATALIA; MARTÍNEZ,JAIME; MEDINA,MAURICIO; PARRA,DANIELA; POHL,NÉLIDA; POTTSTOCK,HANS; OSSANDÓN,TOMÁS; RAZETO,PABLO; RUBILAR,DAVID; SALAS,CARLOS; SALINAS,FERNANDA; SEPÚLVEDA,ESTEBAN; SOTO,CAROLINA; SUÁREZ,RODRIGO; VARGAS,ALEXANDER; VEGA-ZÚNIGA,TOMÁS; VELÁSQUEZ,NELSON; VIDAL,JUAN; VILLAGRA,CRISTIÁN A.; VILLAVICENCIO,CAMILA P.. |
| Tipo: Journal article |
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| Ano: 2005 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2005000100013 |
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| DORADOR,CRISTINA; PARDO,RODRIGO; VILA,IRMA. |
| RESUMEN El lago Chungará, es el más austral y de mayor altura de los lagos altoandinos, está ubicado a 4.520 m de altitud en el altiplano chileno (18º14' S, 69º09' O); es un lago polimíctico-frío, con origen tectónico- volcánico y 34 m de profundidad máxima. Presenta variaciones reducidas de temperatura entre profundidades y estaciones del año (4 a 11 ºC), el promedio de temperatura anual se ha incrementado en 1,2 ºC entre los períodos 1986-1987 y 1998-1999. Entre los mismos períodos se observó una disminución significativa en el volumen del lago (_6,58 %) y consecuentemente en la profundidad máxima. Conjuntamente la salinidad aumentó significativamente con valores máximos de 1.464 µmhos y 2.650 µmhos para cada período. Estos cambios pueden ser las causas... |
| Tipo: Journal article |
Palavras-chave: Volumen; Temperatura; Salinidad; Fitoplancton. |
| Ano: 2003 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2003000100002 |
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| DORADOR,CRISTINA; CASTILLO,GABRIELA; WITZEL,K. P.; VILA,IRMA. |
| Rapel reservoir is an eutrophic system in Chile that has undergone a series of anthropogenic impacts in recent decades. To provide a better understanding of the processes occurring in the reservoir, we examined bacterial composition from surface sediments using traditional microbiology techniques and molecular biology tools. Our results showed significant temporal variation in the physical and chemical composition of the water column, but no depth-related differences during the study period. To detect temporal changes in bacterial composition, cultivable heterotrophic bacteria, heterotrophic iron oxidizing bacteria, and sulfate-reducing bacteria were extracted from the surface sediments and their concentration measured. Microbial diversity in sediments was... |
| Tipo: Journal article |
Palavras-chave: Sediments; Sulfate-reducing bacteria; 16S rDNA. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2007000200007 |
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