Copper, nickel and lead in lichen and tree bark transplants over different periods of time

• Type: Article in International Scientific Journal
• Date: 2008

Authors

baptista, ms (Author) FCUP; vasconcelos, mtsd (Author) Other; cabral, jp (Author) FCUP; freitas, mc (Author) Other; pacheco, amg (Author) Other

Journal

Title: Environmental Pollution

Vol. 151

Pages: 408-413

ISSN: 0269-7491

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 25 Citations

Scopus - 29 Citations

Scientific classification

FOS: Natural sciences > Earth and related Environmental sciences

Other information

Authenticus ID: P-004-355

DOI: 10.1016/j.envpol.2007.06.004

Abstract (EN): This work aimed at comparing the dynamics of atmospheric metal accumulation by the lichen Flavoparmelia caperata and bark of Platanus hybrida over different periods of time. Transplants were exposed in three Portuguese coastal cities. Samples were retrieved (1) every 2 months (discontinuous exposure), or (2) after 2-, 4, 6-, 8- and 10-month periods (continuous exposure), and analysed for Cu, Ni and Pb. Airborne accumulation of metals was essentially independent of climatic factors. For both biomonitors [Pb] > [Nil > [Cu] but Pb was the only element for which a consistent pattern of accumulation was observed, with the bark outperforming the lichen. The longest exposure periods hardly ever corresponded to the highest accumulation. This might have been partly because the biomonitors bound and released metals throughout the exposure, each with its own dynamics of accumulation, but both according to the environmental metal availability.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6