Скачать книгу

159

      161  160

      162 161

      163 162

      164  163

      165  164

      166  165

      167  166

      168  167

      169 168

      170 169

      171 170

      172 171

      173 172

      174 173

      175 174

      176 175

      177 176

      178 177

      179 178

      180 179

      181 180

      182 181

      183 182

      184 183

      185 184

      186 185

      187 186

      188  187

      189  189

      190 190

      191 191

      192 192

      193  193

      A Field Guide to British Rivers

      George Heritage

       Salford University, Salford, UK

      Andy Large

       University of Newcastle, Newcastle upon Tyne, UK

      David Milan

       University of Hull, Hull, UK

Logo: Wiley

      This edition first published 2022

      © 2022 John Wiley & Sons Ltd

      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 law. Advice on how to obtain permission to reuse material from this title is available at http://www.wiley.com/go/permissions.

      The right of George Heritage, Andy Large and David Milan to be identified as the authors of this work has been asserted in accordance with law.

      Registered Offices John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, USA John Wiley & Sons Ltd, The Atrium, Southern Gate, Chichester, West Sussex, PO19 8SQ, UK

      Editorial Office 9600 Garsington Road, Oxford, OX4 2DQ, UK

      For details of our global editorial offices, customer services, and more information about Wiley products visit us at www.wiley.com.

      Wiley also publishes its books in a variety of electronic formats and by print‐on‐demand. Some content that appears in standard print versions of this book may not be available in other formats.

      Limit of Liability/Disclaimer of Warranty While the publisher and authors have used their best efforts in preparing this work, they make no representations or warranties with respect to the accuracy or completeness of the contents of this work and specifically disclaim all warranties, including without limitation any implied warranties of merchantability or fitness for a particular purpose. No warranty may be created or extended by sales representatives, written sales materials or promotional statements for this work. The fact that an organization, website, or product is referred to in this work as a citation and/or potential source of further information does not mean that the publisher and authors endorse the information or services the organization, website, or product may provide or recommendations it may make. This work is sold with the understanding that the publisher is not engaged in rendering professional services. The advice and strategies contained herein may not be suitable for your situation. You should consult with a specialist where appropriate. Further, readers should be aware that websites listed in this work may have changed or disappeared between when this work was written and when it is read. Neither the publisher nor authors shall be liable for any loss of profit or any other commercial damages, including but not limited to special, incidental, consequential, or other damages.

       Library of Congress Cataloging‐in‐Publication Data

      [ISBN 9781118487983]

      Cover image:

      Cover design by

       In memory of Martin Charlton (1957–2021)

       An unassuming academic with a brilliant mind, indubitable character and unbounded enthusiasm for his work and students. Martin will be missed by all who knew him. His influence will live on well beyond his short life.

      Foreword

      Temperate rivers are influenced by many factors including geology, climate, soils, sediment type, flow and human activity. The complex interactions of the non‐anthropogenic controlling factors have led to a wonderful variety of river form in the British Isles. Sadly, however, almost all temperate rivers in the United Kingdom have suffered significant and long‐lasting modification and management that has all but destroyed this variety, instead creating simplified conduits for water and sediment designed primarily to drain the land and reduce flood risk. This book is intended to illustrate this variety, highlighting the many forms that temperate river systems take in the United Kingdom. In this volume, we cover upland and lowland channel types and include the full range of substrate conditions from bedrock through boulder, cobble and gravel through to silt‐dominated systems. In doing this, we describe examples gathered from over 30 years each of research and practical experience working with rivers and set these in the context of the current scientific knowledge to illustrate the natural functioning of temperate river types. We hope this will act as a practical, context‐sensitive and more sustainable template for the restoration and re‐naturalisation of degraded channels in the United Kingdom and as a working set of guidelines for those interested in understanding more about the rich variety of temperate river types. In doing this, we know other examples exist (e.g. the practical guides from the UK River Restoration Centre), and so we intend this volume with its balance between science and practicalities of river management to compliment these other approaches but essentially to act as a stand‐alone guide.

      It is interesting to reflect on the reasons behind the present degraded state of temperate rivers and the common acceptance that this current state is “how a river should be.” Significant, almost wholesale, channel and floodplain modification occurred throughout the agricultural and industrial revolution as valley bottomlands were exploited for food production and industrialists sought to utilise the power of rivers for energy for manufacturing activities. River channels were moved, straightened, embanked, and deepened, and the new channels had their banks protected with wood and stone.

Скачать книгу