Accumulation of Major and Trace Elements in Spider Webs

Abstract

The spider webs of Malthonica ferruginea (Panzer, 1804) from the Agelenidae family were used for the evaluation of heavy metal contamination, and major and trace elements presence in the air of Wrocław, Poland. The concentrations of 16 elements were determined (Mg, Al, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, W, Pt, and Pb). Samples of webs were collected from six different locations with low, moderate, and high pollution level (urban of low and high traffic, residential, and postindustrial sites) after 60 days of exposure. Samples collected from high traffic sites and postindustrial site were found to have high contents of elements than residential sites and one of low traffic urban site. The principle component analysis (PCA) and correlation analysis provide important information about the potential sources of the elements in spider webs. Two contamination sources were identified: road traffic emissions and industrial. This was a first-time ever attempt to use webs for biomonitoring of small-scale distribution of airborne major and trace elements in the city of Wrocław.

Keywords: Agelenidae; Air pollution; Biomonitoring; Heavy metals; Spider webs.

Fig. 1

The map of sites selected for studies

Fig. 2

PCA analysis for sites 4, 5, and 6 excluding Mg, Al, K, Ca, Ti, Co, and W. Cumulative percentage of variation explained by two components 86.66 %. Webs of species M. ferruginea were used