ECOLOGY AND MANAGEMENT OF GIANT HOGWEED (Heracleum mantegazzianum) This page intentionally left blank ECOLOGY AND MANAGEMENT OF GIANT HOGWEED (Heracleum mantegazzianum) Edited by P. Pys˘ek Academy of Sciences of the Czech Republic Institute of Botany, Pru˚honice, Czech Republic M.J.W. Cock CABI Switzerland Centre Delémont, Switzerland W. Nentwig Community Ecology, University of Bern Bern, Switzerland H.P. Ravn Forest and Landscape, The Royal Veterinary and Agricultural University, Hørsholm, Denmark CABI is a trading name of CAB International CAB International Head Office CABI North American Office Nosworthy Way 875 Massachusetts Avenue Wallingford 7th Floor Oxfordshire OX10 8DE Cambridge, MA 02139 UK USA Tel: +44 (0)1491 832111 Tel: +1 617 395 4056 Fax: +44 (0)1491 833508 Fax: +1 617 354 6875 E-mail:
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[email protected] Website: www.cabi.org © CABI 2007. All rights reserved. No part of this publication may be reproduced in any form or by any means, electronically, mechanically, by photocopying, recording or otherwise, without the prior permission of the copyright owners. A catalogue record for this book is available from the British Library, London, UK. A catalogue record for this book is available from the Library of Congress, Washington, DC. ISBN-13: 978 1 84593 206 0 Typeset by MRM Graphics Ltd, Winslow, Bucks. Printed and bound in the UK by Athenaeum Press, Gateshead. Contents Contributors ix Acknowledgement xiii Preface: All You Ever Wanted to Know About Hogweed, but xv Were Afraid to Ask! David M. Richardson 1 Taxonomy, Identification, Genetic Relationships and 1 Distribution of Large Heracleum Species in Europe S˘árka Jahodová, Lars Fröberg, Petr Pys˘ek, Dmitry Geltman, Sviatlana Trybush and Angela Karp 2 Heracleum mantegazzianum in its Primary Distribution 20 Range of the Western Greater Caucasus Annette Otte, R.