Vol. 5 Issue 3 CONTENTS 1996(Click on Title for Abstract)

Suitability Of Habitat For Spawning Lake Trout
P.G. Sly & D.O. Evans

A Test Of Vegetation-Related Indicators Of Wetland Quality In The Prairie Pothole Region
H.A. Kantrud & W.E. Newton

The Influence Of Plants On Concentration And Fractionation Of Zn, Pb, And Cu In Salt Marsh Sediments (Tagus Estuary,Portugal)
I. Caçador, C. Vale & F. Catarino

The Relationship Between Tribuyltin (TBT) Accumulation And Toxicity To Hyalella azteca For Use In Identifying TBT Toxicity In The Field
U. Borgmann, Y.K. Chau, P.T.S. Wong, M. Brown & J. Yaromich

Induction Of Cytochrome P4501a Isoform In Xenopus laevis Is A Valid Tool For Monitoring The Exposure To Benzo[A]Pyrene
A. Colombo, P. Bonfanti, M. Ciccotelli, M. Doldi, N. Dell'Orto & M. Camatini