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Investigation of spatial and temporal metal atmospheric deposition in France through lichen and moss bioaccumulation over one century

Agnan, Yannick and Séjalon-Delmas, Nathalie and Claustres, Adrien and Probst, Anne Investigation of spatial and temporal metal atmospheric deposition in France through lichen and moss bioaccumulation over one century. (2015) Science of the Total Environment, 529. 285-296. ISSN 0048-9697

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Official URL: http://dx.doi.org/10.1016/j.scitotenv.2015.05.083


Lichens and mosses were used as biomonitors to assess the atmospheric deposition ofmetals in forested ecosystems in various regions of France. The concentrations of 17 metals/metalloids (Al, As, Cd, Co, Cr, Cs, Cu, Fe, Mn, Ni, Pb, Sb, Sn, Sr, Ti, V, and Zn) indicated overall lowatmospheric contamination in these forested environments, but a regionalism emerged fromlocal contributions (anthropogenic activities, as well as local lithology). Taking into account the geochemical background and comparing to Italian data, the elements from both natural and anthropogenic activities, such as Cd, Pb, or Zn, did not show any obvious anomalies. However, elements mainly originating from lithogenic dust (e.g., Al, Fe, Ti) were more prevalent in sparse forests and in the Southern regions of France, whereas samples from dense forests showed an accumulation of elements from biological recycling (Mn and Zn). The combination of enrichment factors and Pb isotope ratios between current and herbarium samples indicated the historical evolution of metal atmospheric contamination: the high contribution of coal combustion beginning 150 years ago decreased at the end of the 20th century, and the influence of car traffic during the latter observed period decreased in the last few decades. In the South of France, obvious local influences were well preserved during the last century.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Elsevier website : http://www.sciencedirect.com/science/article/pii/S004896971530142X
HAL Id:hal-01167090
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
ADEME (France)
Deposited On:23 Jun 2015 15:28

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