33 research outputs found
Flood pulse and spatial dynamics of mercury in sediments in Puruzinho lake, Brazilian Amazon
Mineralogia e gĂȘnese de argissolos das Serras do Tabuleiro/ItajaĂ, Estado de Santa Catarina
Relação solo-relevo-substrato geolĂłgico nas restingas da planĂcie costeira do estado de SĂŁo Paulo
Propriedades fĂsicas de um latossolo vermelho-amarelo cultivado com cafeeiro em trĂȘs sistemas de manejo no sul de minas gerais
Morcegos (Chiroptera) capturados em lagoas do Parque Nacional da Restinga de Jurubatiba, Rio de Janeiro, Brasil
Mangrove vegetation in Amazonia: a review of studies from the coast of ParĂĄ and MaranhĂŁo States, north Brazil
Changes in mangrove extension at the Pacoti River estuary, CE, NE Brazil due to regional environmental changes between 1958 and 2004
Contaminação por mercĂșrio em sedimento e em moluscos do Pantanal, Mato Grosso, Brasil Mercury contamination in sediment and in molluscs of Pantanal, Mato Grosso, Brazil
<abstract language="eng">The total level of mercury detected in the sediment and in the tissues of molluscs from the Bento Gomes basin, although low, have shown that the mercury used in the gold mining activities in the Poconé wetlands has contaminated those aquatic habitats in Pantanal. From 69 sediment samples analyzed, 26 % (N = 18) have shown levels ranging from 0.01 to 0.25”g.g-1 of mercury (moist weight). Mercury levels analyzed in 54 samples of mollusc tissues (Ampullaria scalaris Orbigny, 1835; A. canaliculata Lamarck, 1819 and Marisa planogyra Pilsbry, 1933) have shown that 30% (N = 16) were contaminated with levels ranging from 0.02 to 1.16”g.g-1 moist weight. This study shows that the mercury used in digs for gold mining and released into the environment has reached the habitats of Pantanal spread from the sediment into the molluscs living in the region