The uptake and release of some trace metals by aquatic bryophytes in acidified waters in Scotland

Abstract

Aquatic bryophyes have been analysed for aluminium, manganese and zinc to assess the feasibility of using these plants as bioindicators of metal loadings to acid streams and lochs in two regions of Scotland. Bioconcentration occurred in all waters but increased hydrogen ion concentrations in the water were associated with decreased metal concentrations in the bryophytes. Release of aluminium, manganese and zinc from the bryophytes by hydrogen ions may make a significant contribution to the loadings of these metals in acid waters.