Proceedings California Invasive Plant Council Symposium 2007 Featuring Special Theme Sessions on “Communication and Conservation: The Human Dimension in Invasive Plant Management” Proceedings California Invasive Plant Council Symposium Volume 11:2007 Featuring Special Theme Sessions on “Communication and Conservation: The Human Dimension in Invasive Plant Management” September 20-22, 2007 Bahia Resort Hotel, San Diego, California 3 These Proceedings are available online at www.cal-ipc.org Contact Cal-IPC at [email protected] California Invasive Plant Council 1442-A Walnut St. #462 Berkeley, CA 94709 Copyright © 2007 by the California Invasive Plant Council. Recommended citation format: Chang, David. 2007. Invasive plant control and the California red-legged frog injunction. Proceedings of the California Invasive Plant Council. 10:pg. Cal-IPC, Berkeley, CA. The views and opinions expressed in the articles of this publication do not necessarily reflect the position of the California Invasive Plant Council. On the cover: Biological monitor Bonnie Peterson of Merkle and Associates in front of a treated Phoenix canariensis in Peñasquitos Canyon Preserve. Photo by Mike Kelly 4 Table of Contents * Indicates presenting author in multi-author papers. Foreward Building Lasting Coalitions (Invited Theme Session 1) 1 The California Rangeland Conservation Coalition 1 Kim Delfino, Defenders of Wildlife The California Horticultural Invasives Prevention (Cal-HIP) partnership and the PlantRight campaign 1 Betsy Peterson, California State Floral Association Cache Creek Conservancy: Building tribal partnerships 2 Shannon Brawley, Cache Creek Conservancy Mapping and Planning (Contributed Session I) 3 Why walk when you can fly? Systematic aerial weed survey of Santa Cruz Island, California 3 John Knapp*, Native Range Research and Management; Kelvin Walker, Prohunt; Rachel Wolstenholme and Coleen Cory, The Nature Conservancy How to develop user-friendly riparian corridor invasive exotic species/habitat restoration master plans: Experiences on 3 the San Diego and Otay Rivers Brad Burkhart*, BEC/ECORP Consulting; Mike Kelly, Kelly and Associates Distributional patterns of perennial pepperweed (Lepidium latifolium) in the San Francisco Bay, a CalFed project 4 Melanie Vanderhoof* and Chris Rogers, Environmental Science Associates Developing early detection networks to abate the invasive species threat 4 Tania Siemens and Mandy Tu*, The Nature Conservancy Management (Contributed Session II) 5 Managing herbaceous perennials in the Tahoe Basin 5 Jennifer Erskine-Ogden*, UC Davis; Mark J. Renz, University of Wisconsin, Madison; Justin Norsworthy, New Mexico State University; Sue Donaldson, University of Nevada Cooperative Extension The break-up and dispersal of Arundo donax by bulldozers 5 John Boland, Tijuana River Valley Invasive Plant Control Program Spraying over the top of Ambrosia pumila, a federally-listed species, to control invasive weeds 6 Mike Kelly, Kelly and Associates Management (Contributed Session III ) 8 Evaluation of control efficacy and potential off-target effects resulting from herbicide treatment of invasive fig trees 8 (Ficus carica) Katherine A. Holmes* and Alison M. Berry, UC Davis. Non-chemical exotic control in coastal sage scrub restoration at an Audubon Preserve 8 Sandra DeSimone, Audubon California’s Starr Ranch Sanctuary Artichoke thistle (Cynara cardunculus) control efforts and community recovery in historic southern 9 California rangeland Margaret Royall*, Michelle Murdock and Katharine Suding, UC Irvine; Trish Smith, The Nature Conservancy Assessing non-target vegetation response in the wake of perennial pepperweed (Lepidium latifolium) eradication at the 9 Cosumnes River Preserve Rachel A. Hutchinson*, Joshua H. Viers and James F. Quinn, UC Davis iii Biological Control (Contributed Session IV) 11 Evaluation of the rosette weevil, Ceratapion basicorne, a new biological control agent of yellow starthistle 11 Lincoln Smith*, USDA-ARS. Massimo Cristofaro ENEA C.R. Casaccia, Rome, Italy; Carlo Tronci Biotechnology and Biological Control Agency, Rome, Italy; Rustem Hayat, Ataturk University, Erzurum, Turkey The effects of Puccinia jaceae on yellow starthistle competition and growth 14 Jon O’Brien*, Joe DiTomaso, and Guy Kyser, UC Davis; Dale Woods, University of Wyoming Regional testing of Diorhabda ‘elongata’ ecotypes for the biocontrol of saltcedar (Tamarix spp) in western US 15 Peter Dalin, UC Santa Barbara Gray leaf spot of kikuyugrass: An invasive pest of an invasive pest 15 Frank P. Wong*, Karla A. de la Cerda, and Greg W. Douhan, UC Riverside Designing Effective Communication Strategies. (Invited Session II) 17 New ways to connect: Taking the pulse, eliminating the rumors 17 Sharon Farrell, Golden Gate National Parks Conservancy Strategic interactions across property boundaries in invasive plant control and implications for cooperation 17 Mark Buckley, Environmental Incentives Beyond the knowledge deficit model: Changing environmental behaviors 18 Pete Holloran, UC Santa Cruz Research (Contributed Session V) 19 Invasive plants for sale! A survey of nursery professionals 19 Jennifer W. Burt*, Adrianna A. Muir, Jonah Piovia-Scott, Kari E. Veblen, Andy L. Chang, Judah D. Grossman, and Heidi W. Weiskel, UC Davis Interloper’s legacy: Invasive, hybrid-derived California wild radish (Raphanus sativus) evolves to outperform its 19 immigrant parents Caroline E. Ridley* and Norman C. Ellstrand, UC Riverside Toward understanding woody plant invasiveness: Phylogenetically independent contrasts of seedling growth traits 20 and of performance under varying drought and nitrogen levels Eva Grotkopp*, Jennifer Erskine Ogden, and Marcel Rejmánek, UC Davis Physiological and morphological responses of pampas grass (Cortaderia selloana) to variations in water table 21 and soil nitrogen content Joanna L Kroon and George L Vourlitis*, CSU San Marcos Measuring roots, in situ, of two late summer perennial plant species, Elymus glaucus and Grindelia camporum 21 and an invasive annual species, Centaurea solstitialis Steve Young* and Joe DiTomaso, UC Davis Genetic relatedness can limit reproduction in a wind-pollinated grass weed via pollen limitation 22 Jeffrey Firestone* and Marie Jasieniuk, UC Davis Laws and Regulations 23 Mock pesticide use monitoring inspection: An interactive skit with Q and A 23 Bob Case, Cal-IPC; Chris Christofferson, Plumas National Forest; John Knapp, Catalina Island Conservancy Invasive plant control and the California red-legged frog injunction 23 David Chang, Santa Barbara County Agricultural Commissioner’s Office Use of herbicides near threatened and endangered species habitat 24 Polo Moreno, CA Dept. of Pesticide Regulation iv Emerging Issues in Invasive Plant Management (Closing Session) 25 Public policy and advocacy issues for the dedicated weed worker! 25 Mandy Tu, The Nature Conservancy and Doug Johnson Cal-IPC Risky energy: Biofuels and invasive species 25 Jacob Barney and Joe DiTomaso, UC Davis Posters 26 Working and Discussion Group Notes 42 PlantRight bootcamp for effective outreach to nurseries 42 Bethallyn Black, UC Cooperative Extension Master Gardener Program; Betsy Peterson, CA State Floral Association Crafting better public outreach strategies and materials 43 Asha Setty and Mary Petrilli, Golden Gate National Parks Conservancy Developing a ‘citizen science’ program 46 Mary Ann Hawke, San Diego Natural History Museum Preventing the risk of weed spread from ground-disturbing equipment 49 Chris Christofferson, Plumas National Forest Weed mapping developments 51 Jason Giessow, Santa Margarita/San Luis Rey WMA Weed control techniques Q&A 52 Joe DiTomaso, UC Davis, and Mike Kelly, Kelly and Associates Proposed wildland weed licensing through the Department of Pesticide Regulation 55 David Chang, Santa Barbara County Agricultural Commissioner’s office Southern California issues meeting 57 John Knapp, Catalina Island Conservancy v Foreword San Diego, the county with the highest botanical diversity in the lower 48 states, served as the site for Cal-IPC’s 16th Annual Symposium. In addition to our usual complement of talks on research and management of invasive plants, this year we addressed the need for improving communication and developing partnerships. Two sessions on “Conservation and Communication: The Human Dimension in Invasive Plant Management.” featured invited speakers who described how to bring a variety of stakeholders into invasive plant issues. One session focused on building coalitions, while the other addressed communications. To continue the theme of involving the public in weed work, this year’s keynote speaker was Jon Rebman, Curator of Botany for the San Diego Natural History Museum, who described how “citizen scientists” provide data for the San Diego Plant Atlas. Several working and discussion groups, whose notes are included in this volume, also addressed communications and outreach programs. The Weed Control Techniques discussion group meets on the William D. Evans sternwheeler at the Bahia Hote vii Building Lasting Coalitions The California Rangeland Conservation Coalition Kim Delfino, Defenders of Wildlife, Sacramento, CA. [email protected], 916-313-5800 Building and maintaining winning coalitions environmentalists and agencies to create the is not easy – it is an art and a science. There California Rangeland Conservation Coalition. are key components that must be present This is an unprecedented effort to bring together for any coalition to be successful over time. disparate