Flood pulse and spatial dynamics of mercury in sediments in Puruzinho lake, Brazilian Amazon
The study was conducted in Puruzinho lake (Humaitá, AM) considering seasonal periods of rainy and dry in way to elucidate the flood pulse importance in the deposition, remobilization and distributions of mercury and organic matter in bottom sediments in the Madeira River Basin (Brazilian Amazon). Bottom sediments and soils samples were analyzed for total mercury and organic matter. Mercury concentrations obtained in bottom sediment were 32.20-146.40 ng g-1 and organic matter values were 3.5 - 18.0%. The main region for accumulation of mercury and organic matter was in the central and deepest lake area In the rainy season there was a greater distribution of Hg and organic matter, mainly controlled by means of income of the Madeira river water during flooding, while the predominant process in the dry season was the remobilization of total Hg due to the resuspension of bottom sediments.
Main Authors: | Almeida,Ronaldo de, Bernardi,José Vicente Elias, Oliveira,Ronaldo Cavalcante, Carvalho,Dario Pires de, Manzatto,Angelo Gilberto, Lacerda,Luiz Drude de, Bastos,Wanderley Rodrigues |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Instituto Nacional de Pesquisas da Amazônia
2014
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672014000100010 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
DDT in fishes and soils of lakes from brazilian Amazon: case study of puruzinho lake (Amazon, Brazil)
by: Saldanha,Giselle C., et al.
Published: (2010) -
Dynamics of metals in lacustrine sediments: case study of the Madeira River, Amazon region
by: Carvalho,Dario Pires de, et al.
Published: (2018) -
Projected increases in the annual flood pulse of the Western Amazon
by: Zulkafli, Z., et al. -
Water quality changes in floodplain lakes due to the Amazon River flood pulse: Lago Grande de Curuaí (Pará)
by: Affonso,AG, et al.
Published: (2011) -
Mercury in fish and sediment of Purus River, Acre State, Amazon
by: Castro,Nathália Santos Serrão de, et al.
Published: (2016)