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Fraxinus excelsior as a biomonitor of heavy metal pollution

100%

Aksoy A., Demirezen D.

Polish Journal of Environmental Studies

2006

tom 15

nr 1

Fraxinus excelsior L. (Common Ash) is a deciduous tree that grows in wild and urban Turkey. Fraxinus excelsior has been tested as a possible biomonitor of heavy metals in the city of Kayseri, Turkey. Forty-eight sites (urban road side, road side, urban park, industrial, suburban and rural sites) in and around the city of Kayseri were investigated. In this study, the concentrations of Pb, Cd, Cu, Zn, Ni and Cr in unwashed and washed leaves and soils were determined. There were significant relationships between samples of the heavy metal concentrations from surface soil and washed leaves. The concentrations of heavy metals in the leaves of F.excelsior increased along with the urbanization of the sites. Fraxinus excelsior was found to be a useful biomonitor of the determined heavy metals.

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Dynamics and occurrence patterns of the Tatarian orache Atriplex tatarica L. (Chenopodiaceae) at the roadsides in Warsaw, Poland

80%

Jarzyna I., Malecka K., Panufnik-Medrzycka D., Medrzycki P.

Acta Societatis Botanicorum Poloniae

2010

tom 79

nr 3

Atriplex tatarica is an invasive annual plant from Central Asia. It is an early successional species of disturbed habitats, tolerant of a high content of NaCl. It grows also by the roadsides, on lawns by the streets and other places in cities sprayed with salt during snowfalls. The paper presents results of the analysis of abundance and patterns of occurrence of this invasive subhalophytic plant by the roadsides in the Warsaw city. We found that frequency and distribution of Atriplex tatarica increased significantly over the last few decades. The species grows chiefly along main streets which are de-iced. It forms monodominant patches of different length at the zone closest to the street verge. The NaCl concentration there is significantly higher than in the zones more distant from the street verge, although this parameter is very variable. The cover of other species increases with an increasing distance from the roadside verge.

Ograniczanie wyników

1 Acta Societatis Botanicorum Poloniae

1 Polish Journal of Environmental Studies

1 Aksoy A.

1 Demirezen D.

1 Jarzyna I.

1 Malecka K.

1 Medrzycki P.

1 Panufnik-Medrzycka D.

1 2010

1 2006

Wyniki wyszukiwania

Fraxinus excelsior as a biomonitor of heavy metal pollution

Dynamics and occurrence patterns of the Tatarian orache Atriplex tatarica L. (Chenopodiaceae) at the roadsides in Warsaw, Poland