Vol. 2 Issue 4 CONTENTS 1993(Click on Title for Abstract)

From Aquatic Science To Ecosystem Health: A Philosophical Perspective
J.R. Vallentyne & M. Munawar

Determining Desirable Levels Of Ecosystem Services Per Capita
J. Cairns, Jr.

Oscillations Of Algal Biomass, Nutrients And Dissolved Oxygen As A Measure Of Ecosystem Stability
J. Barica

River Bacteria Time Series Analysis: A Field And Laboratory Study Which Demonstrates Aquatic Ecosystem Health
M.A. Holder-Franklin & M. Franklin

Four Centuries Of Cumulative Impacts On A Finnish River And Its Estuary: An Ecosystem Health Approach
M. Hildén & D. Rapport

Ecological Objectives For Management Purposes: Applying The Amoeba Approach
W.E.M. Laane & J.S. Peters

Assessing The Impact Of Sewage Effluent On The Ecosystem Health Of The Toronto Waterfront (Ashbridges Bay), Lake Ontario
M. Munawar, If. Munawar, L. McCarthy, W. Page & G. Gilron

Raising Consciousness In Ecosystem Health
D.F. Malley

[14C] Acetate Incorporation, An Indicator Of Lipid Biosynthesis Within Intact River Biofilms
C. Freeman, D.M. Fiebig & M.A. Lock

Toxicity Of Pentachlorophenol For Micromycetes Isolated From Freshwater Sediments
L. Sage, R. Steiman, F. Seigle-Murandi, J.-L. Benoit-Guyod & G. Merlin