| silver contamination on abiotic and biotic compartments of nahuel huapi national park lakes, patagonia, argentina. | the ag contents of abiotic and biotic compartments of different lakes of nahuel huapi national park, patagonia, argentina were analyzed. the water bodies studied were lakes nahuel huapi, moreno, escondido, espejo chico and traful, the latter chosen as a reference lake. the ag concentration profiles of short sediment cores, dated by (210)pb and (137)cs techniques, were analyzed, as well as suspended load collected from three sites of lake nahuel huapi. the biota studied were the native mussel dip ... | 2005 | 15589254 |
| rb-cs ratio as an indicator of fish diet in lakes of the patagonia, argentina. | the ratios of rb to cs contents were studied in five fish species from seven lakes located in the patagonia andean range, argentina in order to trace fish diet. the species studied were native velvet catfish (diplomistes viedmensis) and creole perch (percichthys trucha), and exotic brown trout (salmo trutta), rainbow trout (oncorhynchus mykiss), and brook trout (salvenilus fontinalis). rainbow trout specimens from two farms were also studied, as well as fish food items and native mussels (diplod ... | 2006 | 16943600 |
| heavy metal and other trace elements in native mussel diplodon chilensis from northern patagonia lakes, argentina. | native mussels, diplodon chilensis, were sampled from four lakes in nahuel huapi national park, northern patagonia, argentina in order to evaluate heavy-metal distribution in the region and to assess the contribution of this compartment of the trophic web to their circulation in the food chain. the concentration of potential pollutants ag, as, cr, hg, sb, and se, and other nine elements of interest (ba, br, ca, co, cs, fe, na, sr, and zn) were determined in diplodon chilensis pooled samples. dig ... | 2004 | 15621942 |