Effects of bauxite tailing on PAR attenuation in an Amazonian crystalline water lake

Effects of bauxite tailing on PAR attenuation in an Amazonian crystalline water lake

The PAR attenuation in Batata Lake, an Amazonian crystalline system subject to the effect of bauxite mining, was increased through dumping of tailing by 35% during low periods in impacted areas. Subsequently, the euphotic zone was reduced by 1 meter and phytoplankton production decreased by 60%. The...

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Bibliographic Details
Published in:Hydrobiologia Vol. 377; no. 1-3; pp. 1 - 7
Main Authors: ROLAND, F, DEASSISESTEVES, F
Format: Journal Article
Language:English
Published: Dordrecht Springer 01-01-1998
Springer Nature B.V
Subjects:
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Ecotoxicology, biological effects of pollution
Euphotic zone
Frequency distribution
Fresh water environment
Fundamental and applied biological sciences. Psychology
Lakes
Phytoplankton
Turbidity
South America
America
Amazon Basin
Brazil, Para, Batata L
Photosynthetically active radiation
Tropical zone
Environmental factor
Tailings
Freshwater environment
Mining
Hydrology
Suspended particle
Bauxite
Seasonal variation
Environment impact
Light
Turbidity
Lakes
Phytoplankton
Water pollution
Photosynthesis
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Description
Summary:The PAR attenuation in Batata Lake, an Amazonian crystalline system subject to the effect of bauxite mining, was increased through dumping of tailing by 35% during low periods in impacted areas. Subsequently, the euphotic zone was reduced by 1 meter and phytoplankton production decreased by 60%. The tailing, which are frequently resuspended and transported into non-impacted areas by currents, and remain in suspension as small particles (>50% of frequency distribution), thereby increasing inorganic turbidity (>25 NTU) and PAR scattering. However, during the high water hydrological phase, there was no distinct difference in PAR attenuation between the impacted and non-impacted areas.[PUBLICATION ABSTRACT]
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ISSN:0018-8158
1573-5117
DOI:10.1023/a:1003252805671