COSTS AND THREATS OF INVASIVE SPECIES TO ALBERTA’S NATURAL RESOURCES Costs and Threats of Invasive Species to Alberta’s Natural Resources A.S. McClay K.M. Fry E.J. Korpela R.M. Lange L.D. Roy Alberta Research Council March 2004 Edmonton DISCLAIMER This report is intended to provide Sustainable Resource Development staff with up-to-date information regarding the ecological and economic impacts of and potential threats from Alberta’s invasive alien species. The opinions, findings and recommendations expressed in this report are those of the authors and do not necessarily reflect the views of the government of Alberta. For copies of this report, contact: Information Centre Main Floor, 9920 108 Street Edmonton, Alberta CANADA T5K 2M4 Phone: (780) 944-0313 FAX: (780) 427-4407 Email:
[email protected] ISBN No. 0-7785-2956-8 (Printed Edition) ISBN No. 0-7785-2957-6 (On-line Edition) Pub No. T/054 (Printed, On-line Edition) ii TABLE OF CONTENTS LIST OF TABLES ......................................................................................................................................vi LIST OF FIGURES ................................................................................................................................................................vii EXECUTIVE SUMMARY ........................................................................................................................ix 1. INTRODUCTION ............................................................................................................................1