Nutrient Concentrations and Trophic State of Small Patagonian Andean lakes
作者： Claudio Baigún , Hernán Mugni , Carlos Bonetto
DOI: 10.1080/02705060.2006.9665022
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摘要: ABSTRACT We analyzed nutrient, chlorophyll, and ionic concentrations in 17 lakes along a strip of land located the rainy Andes Mountains ecotone with dry Patagonian steppe, from 36 to 44° S latitude. Most sampled had composition Andean showed ultraoligotrophic conditions, while few Plateau higher nutrient concentrations. Chlorophyll was correlated P N concentrations, but chlorophyll/TP ratio lower than reported previous worldwide surveys. A lithology dominated by igneous rock together remoteness pristine character basins contribute oligotrophic status lakes. Two other factors appear be important maintaining condition. Andisols, allophanic soils developed over volcanic ash deposits areas, have large retention capability therefore decrease load Natural dense Nothofagus spp. forests, g...
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