About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in JEQ

  1. Vol. 25 No. 2, p. 265-272
     
    Received: Apr 6, 1995


    * Corresponding author(s):
 View
 Download
 Alerts
 Permissions
Request Permissions
 Share

doi:10.2134/jeq1996.00472425002500020009x

Accumulation of Airborne Elements from Vehicles in Transplanted Lichens in Urban Sites

  1. J. Garty *,
  2. M. Kauppi and
  3. A. Kauppi
  1. Dep. of Botany and Inst. for Nature Conservation Res., The George S. Wise Faculty of Life Sciences, Tel Aviv Univ., Tel Aviv 69978, Israel;

Abstract

Abstract

The objective of the current study is to compare the short-term accumulation capacity of two epiphytic lichens characterized by a different type of thallus. The lichens Hypogymnia physodes (L.) Nyl. and Usnea hirta (L.) Weber em. Mot. were transplanted either to the vicinity of streets of low volume and slow traffic or to the vicinity of a highway in the city of Oulu, N. Finland, for a period of 45 d. Eleven elements were analyzed before and after transplantation. The two lichen species were found to possess a similar accumulating capacity for K and Mn. Hypogynmia physodes manifests a higher accumumulating capacity than U. hirta for Na, Fe, and Cu, whereas the more sensitive lichen U. hirta exhibits a higher accumulating capacity for Mg, despite a higher primary concentration of these elements in the thallus of H. physodes. Our findings show a relative high concentration of K, Fe, Mg, Zn, Mn, Pb, and Cu in thalli of H. physodes and Mg, Zn, Pb, Cu, and Cd in U. hirta in material transplanted to streets of low volume and slow traffic, over and above the concentration found in thalli retrieved from the vicinity of the highway. This may be explained by the higher rate of abrasion of car engines running idle near traffic lights and by the lesser ventilation near the close-clustered streets of the inner city.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © .