Mosses as indicators of atmospheric metal deposition in an industrial area of southern Brazil

Acta Botanica Brasilica

Aline Correa Mazzoni²  Rosane Lanzer²  Juçara Bordin¹  Alois Schäfer²  Ronaldo Wasum² 

[1] ,Universidade de Caxias do Sul Centro de Ciências Agrárias e Biológicas

关键词: atmospheric pollution;    bioindicators;    Bryophyta;    heavy metals;    Rio Grande do Sul;    bioindicadores;    Bryophyta;    metais pesados;    poluição atmosférica;    Rio Grande do Sul;   

DOI  :  10.1590/S0102-33062012000300005

来源: SciELO

【 摘 要 】

Caxias do Sul hosts the second largest metal-mechanic pole in Brazil, which increases the risk of atmospheric contamination. With the aim of identifying species that might be useful as indicators of atmospheric deposition of metals, 15 species of mosses from an urban and a rural setting were analyzed and compared with specimens deposited at the Herbarium of the Universidade de Caxias do Sul. Metal concentrations (Zn, Ni, Cd, Cr, Cu and Pb) were determined using Atomic Absorption Spectrometry (AAS). The Mann-Whitney test indicated concentrations of Zn, Cu, Pb and Cr that were significantly different between the urban and rural areas. Additionally, Concentrations of Zn, Cd, Cu and Pb were significantly higher in recently collected samples. The species Thuidium tomentosum Besch., Sematophyllum subpinnatum (Brid.) E. Britton, Helicodontium capillare (Hedw.) A. Jaeger, Schlotheimia jamesonii (W.-Arnott) Brid. and Meteorium deppei (Hornsch. ex Müll. Hal.) Mitt. are potential biomonitors of atmospheric metal deposition.

【 授权许可】

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