Mercury in the Biogeochemical Cycle Natural Environments and Hydroel

Nowadays, major environmental issues are the object of large public debates de­ spite the fact that scientific knowledge is often insufficient to draw unequivocal conclusions. Such is the case in the ongoing debate regarding the specific contri­ butions o

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Springer Berlin Heidelberg New York Barcelona Hong Kong London Milan Paris Singapore Tokyo

Marc Lucotte . Roger Schetagne . Normand Therien Claude Langlois· Alain Tremblay (Eds.)

Mercury in the Biogeochemical Cycle Natural Environments and Hydroelectric Reservoirs of Northern Quebec (Canada)

With 69 Figures and 46 Tables

,

Springer

Editors Dr. Mark Lucotte Universite du Quebec aMontreal C.P. 8888, Succursalle Centre-ville Montreal, Quebec, Canada H3C3P8

Claude Langlois EnvrronmentCanada 105 McGill street, 4th floor Montreal, Quebec, Canada H2Y2E7

Roger Schetagne Hydro-Quebec 855 Ste-Catherines east, 18th floor Montreal, Quebec, Canada H2L4P5

Dr. Alain Tremblay Hydro-Quebec 855 Ste-Catherines east, 18th floor Montreal, Quebec, Canada H2L4P5

Dr. Normand Therien Universite de Sherbrooke Dept. of Chemical Engineering Faculty of Engineering Sherbrooke, Quebec, Canada J1K2R1

ISBN -13:978-3-642-64282-1 CIP data applied for Die Deutsche Bibliothek - CIP-Einheitsaufnahme Mercury in the biogeochemical cycle: natural environments and hydroelectric reservoirs of northern Qu&ec (Canada); with 46 tables / Marc Lucotte ... (ed.). - Berlin; Heidelberg; New York; Barcelona; Hong Kong; London; Milan; Paris; Singapore; Tokyo: Springer, 1999 (Environmental science) ISBN-13:978-3-642-64282-1 e-ISBN-13:978-3-642-60160-6 DOl: 10.1007/978-3-642-60160-6

This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilm or in other ways, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer-Verlag. Violations are liable for prosecution act under German Copyright Law. © Springer-Verlag Berlin Heidelberg 1999 Softcover reprint of the hardcover 1st edition 1999

The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. Typesetting: Camera-ready by editors Cover layout: Struve & Partner, Heidelberg SPIN: 10706080 32/ 3020 - 5 4 3 2 1 0 - Printed on acid -free paper

Foreword

Nowadays, major environmental issues are the object of large public debates despite the fact that scientific knowledge is often insufficient to draw unequivocal conclusions. Such is the case in the ongoing debate regarding the specific contributions of anthropogenic greenhouse gas emissions and of natural climate changes to global warming. At least 10 to 20 years of additional observations will be required, before we will be able to conclude, with certainty, on this subject. In the mean time, and as directed by their immediate interests, people will continue to promote contradictory opini