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N. Farella
Researcher at Université du Québec à Montréal
Publications - 11
Citations - 1165
N. Farella is an academic researcher from Université du Québec à Montréal. The author has contributed to research in topics: Drainage basin & Deforestation. The author has an hindex of 10, co-authored 11 publications receiving 1110 citations.
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Journal ArticleDOI
Effects of recent human colonization on the presence of mercury in amazonian ecosystems
Marc Roulet,Marc Lucotte,N. Farella,G. Serique,H. Coelho,C.-J. Sousa Passos,E. de Jesus da Silva,P. Scavone de Andrade,Donna Mergler,Jean Remy Davée Guimarães,M. Amorim +10 more
TL;DR: In this paper, three gold mining sources were characterised and mass balance calculations were used to determine their relative contributions to the contamination of the Amazonian environment about an order of magnitude more Hg is emitted to the atmosphere by goldmining activity than by burning of forest biomass.
Journal ArticleDOI
The geochemistry of mercury in central amazonian soils developed on the Alter-do-Chão formation of the lower Tapajós River Valley, Pará state, Brazil
Michel Roulet,Marc Lucotte,A. Saint-Aubin,S. Tran,Isabelle Rheault,N. Farella,E. de Jesus da Silva,J. Dezencourt,C.-J. Sousa Passos,G. Santos Soares,Jean Remy Davée Guimarães,Donna Mergler,M. Amorim +12 more
TL;DR: The sandification and podzolisation that is characteristic of the evolution of numerous pedological systems in the equatorial Amazon could be responsible for exportation of the naturally accumulated Hg by acidic complexation and migration to the black waters of the Amazon.
Journal ArticleDOI
Deforestation modifying terrestrial organic transport in the Rio Tapajós, Brazilian Amazon
TL;DR: In this article, the authors analyzed the impact of deforestation on the transport of terrigenous organic matter (OM) in the Rio Tapajos, a major tributary to the Amazon.
Journal ArticleDOI
Increase in mercury contamination recorded in lacustrine sediments following deforestation in the central Amazon1The present investigation is part of an ongoing study, the CARUSO project (CRDI-UFPa-UQAM), initiated to determine the sources, fate and health effects of the presence of MeHg in the area of the Lower Tapajós.1
Marc Roulet,Marc Lucotte,René Canuel,N. Farella,M Courcelles,Jean Remy Davée Guimarães,Donna Mergler,M. Amorim +7 more
TL;DR: In this paper, a geochemical study of surface sediments vertical profiles of 30-80 cm from lentic ecosystems of the Tapajos River enables the observation of environmental changes responsible for the mercury contamination of aquatic systems exploited by the human riverine population.
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Historical and geographical variations of sources and transport of terrigenous organic matter within a large-scale coastal environment
TL;DR: In this paper, the sources and inputs of terrigenous organic matter (OM) to the upper St Lawrence system have been influenced by increased discharges of industrial solid organic wastes from the pulp and paper industry following its expansion in the 1920-1940's.