Lichen Usnea barbata as biomonitor of airborne elements deposition in the Province of Tierra del Fuego (southern Patagonia, Argentina)

Lichen Usnea barbata was tested as a possible biomonitor of atmospheric deposition in a supposedly pristine environment Tierra del Fuego (Argentina). Lichen samples were collected in 2005 and again in 2006 in 71 sites covering almost the entire region. The aim of the study was to evaluate the bioacc...

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Bibliographic Details
Published in:Ecotoxicology and environmental safety 2009-05, Vol.72 (4), p.1082-1089
Main Authors: Conti, Marcelo Enrique, Pino, Anna, Botrè, Francesco, Bocca, Beatrice, Alimonti, Alessandro
Format: Article
Language:English
Subjects:
Air Pollutants - toxicity
Argentina
Cluster Analysis
Elements
Environmental Monitoring - methods
Lichens
Lichens - chemistry
Lichens - physiology
Mass Spectrometry
Multivariate analysis
Quality Control
Specimen Handling
Tierra del Fuego
Trace elements
Usnea
Usnea barbata
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Summary:Lichen Usnea barbata was tested as a possible biomonitor of atmospheric deposition in a supposedly pristine environment Tierra del Fuego (Argentina). Lichen samples were collected in 2005 and again in 2006 in 71 sites covering almost the entire region. The aim of the study was to evaluate the bioaccumulation of 26 elements in order to define the background levels in the region. The quantification was carried out by the sector field inductively coupled plasma mass spectrometry. No relevant temporal accumulation patterns between 2005 and 2006 sampling campaigns were observed. Then, the results were submitted to multivariate statistical analysis (cluster and principal component analyses). Cluster analysis produced a dendrogram where the 71 sites were divided into four clusters at (Dlink/Dmax)100
ISSN:0147-6513
1090-2414
DOI:10.1016/j.ecoenv.2008.12.004