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Mostrando ítems 21-30 de 118
Evolution of ice-dammed proglacial lakes in Última Esperanza, Chile: implications from the late-glacial R1 eruption of Reclús volcano, Andean Austral Volcanic Zone
(Servicio Nacional de Geología y Minería (SERNAGEOMIN), 2011)
Extremophile Culture Collection from Andean Lakes: Extreme Pristine Environments that Host a Wide Diversity of Microorganisms with Tolerance to UV Radiation
(Springer, 2009-06)
A total of 88 bacterial strains were isolated from six Andean lakes situated at altitudes ranging from 3,400 to 4,600 m above sea level: L. Aparejos (4,200 m), L. Negra (4,400 m), L. Verde (4,460 m), L. Azul (4,400 m), L. ...
Dynamics of Phosphorus in sediments of a naturally acidic lake
(Elsevier, 2013-01)
The mechanisms which controls the fixation and/or release of P in sediment of an extremely acidic lake (pH = 2.0 to 3.0) and its response to the influence of eutrophic urban waste water were investigated. The results, in ...
Microbialites in a high-altitude andean lake: multiple controls in carbonate precipitation and lamina accretion
(Society for Sedimentary Geology, 2014-06)
Microbialites comprise the mineralized record of early life on Earth and preserve a spectrum of fabrics that reflect complex physical, chemical, and biological interactions. The relatively rarity of microbialites in modern ...
Lake fluctuations, plant productivity, and long term variability in high elevation tropical andean ecosystems
(Inst Arctic Alpine Res, 2013-05)
Despite the large scientific and conservation value of tropical very high elevation Andean ecosystems (above 4500 masl) little is known about environmental trends and ranges of variability. We combined satellite image ...
Evolution of ice-dammed proglacial lakes in Ultima Esperanza, Chile: implications from the late-glacial R1 eruption of Reclus volcano, Andean Austral Volcanic Zone
(SERVICIO NACIONAL GEOLOGIA MINERIA, 2011-01)
Newly described outcrops, excavations and sediment cores from the region of Ultima Esperanza, Magallanes, contain tephra derived from the large late-glacial explosive RI eruption of the Reclus volcano in the Andean Austral ...
Optical properties and light penetration in a deep, naturally acidic, iron rich lake: Lago Caviahue (Patagonia, Argentina)
(Elsevier Gmbh, 2013-03)
The optical properties and light climate in the deep and extremely acid Lake Caviahue have been studied in order to better understand its characteristics and the possible influence upon the phytoplankton community. The ...
Effect of volcanic eruption on nutrients, light, and phytoplankton in oligotrophic lakes
(Amer Soc Limnology Oceanography, 2013-12)
Volcanic eruptions that shape the earth's surface can have major effect on ecosystems and, as natural experiments, can yield insights into ecological dynamics. On 04 June 2011, a mega-eruption in the Puyehue volcanic complex ...
Patterns of dissolved organic matter across the Patagonian landscape: A broad-scale survey of Chilean and Argentine lakes
(Csiro Publishing, 2017-08-07)
Dissolved organic matter (DOM) is a complex mixture of carbon compounds from autochthonous and allochthonous sources. Dissolved organic carbon (DOC) concentrations and optical metrics of DOM provide clues as to the sources ...
Infection dynamics of sp. (Digenea: Diplostomidae) in first and second intermediate hosts from an Andean Patagonian lake (Argentina)Dinámica de la infección de sp. (Digenea: Diplostomidae) en el primer y segundo hospedador intermediario de un lago Andino Patagónico (Argentina)
(Asociación Argentina de Parasitlogía, 2015-06)
In Argentinean Patagonia, a species of the genus Posthodiplostomum has been reported infectingpopulations of the snail Anisancylus obliquus and the galaxiid fi sh Galaxias maculatus (small puyen), meanwhileadults would ...