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Differential piscivory of the native Percichthys trucha and exotic salmonids upon the native forage fish Galaxias maculatus in Patagonian Andean lakes
(Elsevier Gmbh, 2007-02)
The present paper analyses predation patterns, of Percichthys trucha and salmonid fish upon Galaxias maculatus in five lakes of northern Patagonia with differing community and environmental characteristics. Tank experiments ...
The microbial mercury link in oligotrophic lakes: Bioaccumulation by picocyanobacteria in natural gradients of dissolved organic matter
(Pergamon-Elsevier Science Ltd, 2019-09)
Andean Patagonian lakes are oligotrophic systems characterized by low dissolved organic carbon (DOC) levels and moderate to high Hg concentration that determine naturally high Hg/DOC ratios and bioavailability. In these ...
Effect of glacial lake outburst floods on the light climate in an Andean Patagonian lake: implications for planktonic phototrophs
(Springer, 2018-07)
Climate change is altering temperature and precipitation patterns all over the world. In North Patagonia, glaciers of the Tronador mountain (41°S) show a continuous and maintained recession, and these meltwaters are ...
Differences in bacterial community-level physiological profiles between deep and shallow north-patagonian Andean lakes
(E Schweizerbartsche Verlags, 2018-12)
The utilization of carbon substrates by bacteria results in a process of great ecological significance for aquatic ecosystems. Bacteria are capable of consuming a wide range of organic molecules, but despite the highly ...
Dynamics of the dissolved organic matter in a stream-lake system within an extremely acid to neutral pH range: Agrio-Caviahue watershed
(Pergamon-Elsevier Science Ltd, 2020-07)
The Agrio-Caviahue is a natural stream-lake system composed of the Upper Agrio River (UAR) -Lake Caviahue- Lower Agrio River (LAR). The system has a broad pH gradient from extremely acid in the hot spring to almost neutral ...
Spatiotemporal structuring factors in the Chironomidae larvae (Insecta: Diptera) assemblages of an ultraoligotrophic lake from northern Patagonia Andean range: implications for paleolimnological interpretations
(Springer, 2020-01)
Chironomid larvae assemblages and their seasonal variations were analyzed in several substrate types from Lake Moreno Oeste (Northern Patagonia) in order to understand the spatiotemporal patterns controlling its community. ...
Inorganic mercury (Hg2+) accumulation in autotrophic and mixotrophic planktonic protists: Implications for Hg trophodynamics in ultraoligotrophic Andean Patagonian lakes
(Pergamon-Elsevier Science Ltd, 2018-05)
Microbial assemblages are typical of deep ultraoligotrophic Andean Patagonian lakes and comprise picoplankton and protists (phytoflagellates and mixotrophic ciliates), having a central role in the C cycle, primary production ...
Spatial and seasonal dynamics of water physical–chemical parameters in rivers and lakes of an Argentinian Patagonia basin
(Springer, 2020-07-26)
The Senguer River basin, located in central Argentinian Patagonia, has its headwater in the Andean Range and ends in extra-Andean Patagonian plains. Within this region, the water bodies may be affected by their localization ...
Reproductive aspects of Galaxias platei (Pisces, Galaxiidae) in a deep lake in North Patagonia
(Csiro Publishing, 2018-05)
Reproductive characteristics of the native fish Galaxias platei were studied in Lake Moreno, an ultra-oligotrophic deep lake in North Patagonia. According to histological analysis of ovaries, G. platei presents synchronous ...
Mapping and monitoring Lakes Intra-Annual variability in semi-arid regions: A case of study in Patagonian Plains (Argentina)
(MDPI AG, 2018-07-03)
In arid and semi-arid regions, the climatic impact on lakes is especially critical, as they are scarce and play an important role as a primary source of the water supply. However, in some extended regions with those climatic ...