Distribution and trends of mercury in deciduous tree cores

Siwik, Eden I.H.; Campbell, Linda M.; Mierle, Gregory

Distribution and trends of mercury in deciduous tree cores

2010

Siwik, Eden I.H. | Campbell, Linda M. | Mierle, Gregory

The distribution of total mercury (THg) within common deciduous trees and the applicability of tree cores as biomonitors of historical environmental THg trends were assessed for both contaminated and reference sites around Kingston, Ontario. Samples were collected from Acer spp., Quercus spp. Populus spp. and Salix spp. Bark and wood THg concentrations were found to be highly correlated whereas soil and wood THg concentrations were not. There were no temporal relationships for THg in dated tree rings corresponding with any other known environmental Hg trends. The shoreline speciess, Populus and Salix spp., had the greatest bark and wood Hg concentrations reaching 18 ng/g, significantly higher than for inland trees Quercus and Acer spp. with maximum values of 7 and 1.2 ng/g for bark and wood respectively. While tree cores cannot be reliably used as temporal THg biomonitors, there is promise for tree species such as Populus spp and Salix spp as spatial indicators of local long-term Hg contamination.

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Mots clés AGROVOC

acer analysis bark chemistry environmental monitoring growth rings kinetics mercury mercury methods ontario populus quercus salix soil trees trees wood wood

Informations bibliographiques

Publié dans

Environmental pollution

Volume 158 Numéro 6 Pagination 2067 - 2073 ISSN 0269-7491

Editeur

Elsevier Science Ltd

D'autres materias

Plant bark; Species specificity; Environmental pollutants

Langue

anglais

Note

In the special section: advances of air pollution science: from forest decline to multiple-stress effects on forest ecosystem services / edited by marcus schaub, rainer matyssek and gerhard wieser.

Paper presented at the international conference on air polllution and climate change at contrasting altitude and latitude, held september 7-12, 2009, murten, switzerland.

Includes references

Type

Text; Journal Article

Sur AGRIS depuis: 2024-02-28

Format: MODS

Fournisseur de données

Cette notice bibliographique a été fournie par National Agricultural Library

Découvrez la collection de ce fournisseur de données dans AGRIS

Liens

DOI http://dx.doi.org/10.1016/j.envpol.2010.03.002

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