Dictionary of Natural Resource Management This page intentionally left blank Julian and Katherine Dunster Dictionary of Natural Resource Management UBCPress / Vancouver © UBC Press 1996 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means without prior written permission of the publisher. Printed in Canada on acid-free paper <*> ISBN 0-7748-0503-X Canadian Cataloguing in Publication Data Dunster, Julian A. (Julian Andrew), 1954- Dictionary of natural resource management ISBN 0-7748-0503-X 1. Natural resources - Management - Dictionaries. I. Dunster, Katherine Jane, 1955- II. Title. S922.D86 1995 333.7'03 C95-910798-3 UBC Press gratefully acknowledges the ongoing support to its publishing program from the Canada Council, the Province of British Columbia Cultural Services Branch, and the Department of Communications of the Government of Canada. Set in Minion and Frutiger by George Vaitkunas Printed and bound in Canada by Friesens Designer: George Vaitkunas Selected illustrations: Irma Rodriguez UBC Press University of British Columbia 6344 Memorial Rd Vancouver, BC V6T 1Z2 (604) 822-3259 Fax:1-800-668-0821 E-mail: [email protected] This book is dedicated to the wonderful memories of our association with the late Robert S. Dorney, one of Canada's foremost natural resource planners: a supervisor, friend, and mentor beyond compare. He showed us how to turn dreams into realities. Si monumentum requiris, circumspice. And to Flora, our hope for the future. This page intentionally left blank Contents Acknowledgments / ix Introduction / xiii Dictionary / 3 Appendixes 1 Classification of Organisms / 337 2 Geological Time Scales / 354 3 Conversion Tables and Other Measurements / 356 This page intentionally left blank Acknowledgments Researching and compiling a book of this nature has involved the cooperation of many people and organizations around the world as sponsors of the work, as reviewers of the data entered, as sources of critical (but mostly help- ful) advice, or as suppliers of additional materials. Without this assistance the project would have failed, and we are indebted to the many people who have helped us. The research work was cooperatively funded by government and non- government agencies: British Columbia Conservation Foundation; Department of Fisheries and Oceans (Habitat Manage- ment); Natural Resources Canada; British Columbia Ministry of Forests (FRDA II); British Columbia Ministry of Envi- ronment, Lands and Parks, Integrated Resource Management; Environment Canada, Inland Waters; Environment Canada: Fraser River Action Plan, Forest Ecosystem/Biodiversity, Fraser Pol- lution Abatement Office. To all of them we extend our thanks for their assis- tance and faith in the project. Wherever possible we have tried to provide definitions that do not infringe on the copyright of individual authors or publishers. However, in some cases, terms were so well defined that it was difficult to improve the text without making the entry clumsy. In other cases, we have merged several definitions to provide more comprehensive entries or to ensure that we have captured the many