INVESTIGADORES
CARRERAS Hebe Alejandra
artículos
Título:
Assessment of the relationship between total suspended particles and the response of two different biological indicators transplanted to an urban area in central Argentina
Autor/es:
CARRERAS, H; RODRIGUEZ, J.; GONZALEZ, C.M.; WANNAZ, E.; GARCIA FERREYRA, M.F.; PEREZ, C.; PIGNATA, M.L
Revista:
ATMOSPHERIC ENVIRONMENT
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2009 vol. 43 p. 2944 - 4949
ISSN:
1352-2310
Resumen:
Samples of the vascular plant Tradescantia pallida and the lichen Usnea amblyoclada were exposed from
October 2004 to April 2005 in three sites with different local sources of air
pollution in Córdoba city, Argentina. Simultaneous determinations of the
ambient levels of total suspended particles were made for each site. Young
inflorescenses of T. pallida were
collected in November, February and April and the frequency of micronuclei was
determined on early tetrads of pollen mother cells. Physiological parameters and
the elemental composition of lichen thalli were measured from samples exposed
and replaced every month. Significant differences among sampling sites were
observed in the frequency of micronuclei measured in T. pallida as well as in many physiological parameters and elements
accumulated in lichen thalli. The mass of particulate material as well as the
concentration of Ca, Mn, Cu, Zn and Sr were significantly different in
different sampling sites, too. These results suggest that in situ biomonitoring using both higher plants and lichens may be
of use to characterize air pollution in areas devoid of instrumental monitoring
techniques or where it is necessary to explore the distribution of air
contaminants at a micro scale.