O
Olaf Malm
Researcher at Federal University of Rio de Janeiro
Publications - 263
Citations - 10516
Olaf Malm is an academic researcher from Federal University of Rio de Janeiro. The author has contributed to research in topics: Mercury (element) & Methylmercury. The author has an hindex of 52, co-authored 256 publications receiving 9145 citations. Previous affiliations of Olaf Malm include Rio de Janeiro State University.
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Journal ArticleDOI
Gold mining as a source of mercury exposure in the Brazilian Amazon.
TL;DR: The results available document a considerable impact on environmental mercury concentrations and frequent occurrence of human exposure levels that may lead to adverse health effects.
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Trophic magnification factors: Considerations of ecology, ecosystems, and study design
Katrine Borgå,Karen A. Kidd,Derek C. G. Muir,Olof Berglund,Jason M. Conder,Frank A. P. C. Gobas,John R. Kucklick,Olaf Malm,David E. Powell +8 more
TL;DR: Empirical TMFs are likely to be useful for understanding the food web biomagnification potential of chemicals, but may be less useful in species- and site-specific risk assessments, where the goal is to predict absolute contaminant concentrations in organisms in relation to threshold levels.
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Recovery of Mercury-Contaminated Fisheries
John Munthe,R.A. Bodaly,Brian A. Branfireun,Charles T. Driscoll,Cynthia C. Gilmour,R. Harris,Milena Horvat,Marc Lucotte,Olaf Malm +8 more
TL;DR: The main conclusion drawn is that changes in Hg loading (increase or decrease) will yield a response in fish MeHg but that the timing and magnitude of the response will vary depending of ecosystem-specific variables and the form of the Hg loaded.
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Mercury and methylmercury in fish and human hair from the Tapajós river basin, Brazil
Olaf Malm,Fernando J.P. Branches,Hirokatsu Akagi,Miriam B. de Castro,Wolfgang C. Pfeiffer,Masazumi Harada,Wanderley Rodrigues Bastos,Hiroo Kato +7 more
TL;DR: Fish and hair samples as the best indicators of human methylmercury contamination were investigated in the main cities and villages along the Tapajós river basin and critical fish, areas, and more exposed human groups are identified.
Journal Article
Mercury pollution due to gold mining in the Madeira river basin, Brazil.
TL;DR: In this paper, an extensive survey on the mercury concentration in different environmental compartments (river water, suspended and bottom sediments, soil, and air), as well as in fish and human hair, from the gold mining area along the Madeira River, SW Amazon, are presented.