INVESTIGADORES
SOTO CARDENAS Estela Carolina
congresos y reuniones científicas
Título:
Mercury in aquatic systems of Nahuel Huapi National Park: a natural biogeochemical hotspot in northern patagonia
Autor/es:
ARCAGNI, MARINA; SOTO CÁRDENAS, CAROLINA; FAJON, VESNA; RIZZO, ANDREA; REISSIG, MARIANA; CLAUDIA, QUEIMALIÑOS; RIBEIRO GUEVARA, SERGIO; HORVAT, MILENA; PÉREZ CATÁN, SOLEDAD; DIEGUEZ, MARÍA DEL CARMEN
Reunión:
Congreso; 14th International Conference on Mercury as a Global Pollutant; 2019
Resumen:
Nahuel Huapi National Park (NHNP) includes many freshwater oligotrophicecosystems born in the Andes that are the main water source for the vast arid stretch of Northeastern Patagonia which holds most human settlements and activities of the region. In headwater catchments several investigations have reported moderate to high Hg levels in lake sediments, aquatic biota and terrestrial bioindicators, attributing them to long and short range atmospheric transport, volcanic activity in the Andes and biomass burning. The sharp W-E orographic precipitation gradient (3500 and 1200 mmy-1) and the contrasting atmospheric mercury fluxes recorded at the W (∼7 ngm-3) and E (