Banded Vegetation Patterning in Arid and Semiarid Environments Ecolo

Aerial photography has revealed the striking, widespread phenomenon of repeating patterns of vegetation in more arid areas of the world. Two interdependent phases, bands of dense and sparse vegetation, alternate in the landscape. This volume synthesizes h

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Edited by M.M. Caldwell, Logan, USA G. Heldmaier, Marburg, Germany O.L. Lange, Wiirzburg, Germany H.A. Mooney, Stanford, USA E.-D. Schulze, Jena, Germany U. Sommer, Kiel, Germany

Ecological Studies Volumes published since 1995 are listed at the end of this book.

Springer Science+Business Media, LLC

David J. Tongway Josiane Seghieri

Christian Valentin

Editors

Banded Vegetation Patterning in Arid and Semiarid Environments Ecological Processes and Consequences for Management

Foreword by Jean-Claude Menaut and Brian Walker With 62 Illustrations

,

Springer

David 1. Tongway CSIRO Sustainable Ecosystems GPO Box 284 Canberra ACT 2601 Australia [email protected]

Christian Valentin Institut de Recherche pour le Developpement (IRD) 213 rue La Fayette F-75 480 Paris cedex 10 France

Josiane Seghieri Institut de Recherche pour le Developpement (IRD) Laboratoire d'etude du Comportement des Sols Cultives (LCSC) 911 avenue Agropolis, BP 5045 F-34 032 Montpellier cedex 1 France [email protected] Cover illustration: Oblique aerial photograph of "typical" tiger bush in Niger, 13°40 N, 2°40 E. (Photo from Christian Valentin.)

Library of Congress CataIoging-in-Publication Data Banded vegetation patteming in arid and semiarid environments : Ecological processes and consequences for management I edited by David Tongway, Christian Valentin, Josiane Seghieri. p. cm. - (Ecological studies; v. 149) Includes bibliographical references (p. ). ISBN 978-1-4612-6559-7 ISBN 978-1-4613-0207-0 (eBook) DOI 10.1007/978-1-4613-0207-0 1. Vegetation dynamics. 2. Landscape ecology. Christian. III. Seghieri, Josiane. IV. Series. QK910 .B36 2001 581.7'54----{1c2l

1. Tongway, David.

II. Valentin, 00-047089

Printed on acid-free paper. ©200l Springer Science+Business Media New York Originally published by Springer-Verlag New York, Inc. in 2001 Softcover reprint of the hardcover 1st edition 2001 AII rights reserved. This work may not be translated or copied in whole or in part without the written pennission of the publisher Springer Science+Business Media, LLC except for brief excerpts in connection with reviews or scholarly analysis. Use in connection with any fonn of infonnation storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed is forbidden. The use of general descriptive names, trade names, trademarks, etc., in this publication, even if the fonner are not especially identified, is not to be taken as a sign that such names, as understood by the Trade Marks and Merchandise Marks Act, may accordingly be used freely by anyone. Production coordinated by Princeton Editorial Associates, Inc., and managed by Francine McNeill; manufacturing supervised by Jerome Basma. Typeset by Princeton Editorial Associates, Inc., Roosevelt, NJ, and Scottsdale, AZ. 9 8 7 6 5 432 1 ISBN 978-1-4612-6559-7

Foreword

Although the pattern of banded landscapes had been recognized in the late 1930s both in East and West Africa, their extent, nature, and ecological