Fisheries Management Fisheries Management A Manual for Still-Water Coarse Fisheries Ash Girdler CBiol, FIBiol, MIFM, FIFM, CEnv Ian Wellby FIFM, CEnv Robin Welcomme PhD, HonFSE, FIFM, CEnv A John Wiley & Sons, Ltd., Publication This edition fi rst published 2010 © 2010 by Blackwell Publishing Ltd Blackwell Publishing was acquired by John Wiley & Sons in February 2007. Blackwell’s publishing programme has been merged with Wiley’s global Scientifi c, Technical, and Medical business to form Wiley-Blackwell. Registered offi ce John Wiley & Sons Ltd, The Atrium, Southern Gate, Chichester, West Sussex, PO19 8SQ, United Kingdom Editorial offi ces 9600 Garsington Road, Oxford, OX4 2DQ, United Kingdom 2121 State Avenue, Ames, Iowa 50014-8300, USA For details of our global editorial offi ces, for customer services and for information about how to apply for permission to reuse the copyright material in this book please see our website at www.wiley.com/wiley-blackwell. The right of the author to be identifi ed as the author of this work has been asserted in accordance with the UK Copyright, Designs and Patents Act 1988. 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, electronic, mechanical, photocopying, recording or otherwise, except as permitted by the UK Copyright, Designs and Patents Act 1988, without the prior permission of the publisher. Wiley also publishes its books in a variety of electronic formats. Some content that appears in print may not be available in electronic books. Designations used by companies to distinguish their products are often claimed as trademarks. All brand names and product names used in this book are trade names, service marks, trademarks or registered trademarks of their respective owners. The publisher is not associated with any product or vendor mentioned in this book. This publication is designed to provide accurate and authoritative information in regard to the subject matter covered. It is sold on the understanding that the publisher is not engaged in rendering professional services. If professional advice or other expert assistance is required, the services of a competent professional should be sought. Library of Congress Cataloging-in-Publication Data Girdler, Ashley. Fisheries management : a manual for still-water coarse fi sheries / Ashley Girdler, Ian Wellby, Robin Welcomme. – 1st ed. p. cm. Includes index. ISBN 978-1-4051-3332-6 (hardback : alk. paper) 1. Fishery management. I. Wellby, Ian. II. Welcomme, R. L. III. Title. SH328.G69 2010 639.3'12–dc22 2009038733 A catalogue record for this book is available from the British Library. Set in 10 on 12.5 pt Sabon by Toppan Best-set Premedia Limited Printed in Singapore 1 2010 Contents Acknowledgements vii Part I Ecology of Still-Water Fisheries 1 1 Introduction 3 2 Ecology of Lakes 5 3 Bacteria 25 4 Plants 28 5 Invertebrates 35 6 Fish 43 7 Disease-Causing Organisms 79 Chris Williams and Ian Wellby 8 Mammals and Birds 97 Part II Management of Still-Water Fisheries 103 9 Developing and Preparing a Fishery 105 10 The Construction of a Still-Water Fishery 122 11 Fish Stock Assessment 154 12 Stock Manipulation 170 13 Invertebrate Survey 196 14 Control of Water Quality 198 15 Control of Aquatic Plants 208 16 Control of Erosion 224 17 Control of Predators and Nuisance Species 236 18 Managing the Impact of Climate Change on Still-Water Fisheries 256 19 Control of Fish Disease 259 20 Biosecurity 270 21 Control of Fishing Activities 274 22 Fish Nutrition 285 23 Improving Conditions or Fishery Enhancement 306 24 General Administration 344 Part III Legal and Social Framework 357 25 General Legislation 359 26 Environmental Legislation 364 v vi Contents 27 Direct Fisheries-Related Legislation 368 28 Agencies and Organisations 373 Appendix A: Example of Risk Assessment 380 Appendix B: Example Model of a Disciplinary Procedure 383 Appendix C: Example of a Fisheries Survey 386 Glossary 393 Further Reading 395 Index 398 Acknowledgements We express our gratitude to Dr Chris Williams for his work on the fi sh health chapter and other help he has offered. We also thank Nigel Hewlett for his advice during the preparation of this book. Many thanks too to Jenny Wellby for the help and support she has offered and her contribution in editing the various drafts. We also thank the staff of the A.G.A. Group, who have contributed to this book by taking the time to extend their efforts during the working day to provide the expansion of our image library, which has ensured that the text is populated with up- to - date graphics and images. vii
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