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Spongeplant Spreading in the Delta Vol. 19, No. 1 Spring 2011 Cal-IPC News Protecting California’s Natural Areas from Wildland Weeds Quarterly Newsletter of the California Invasive Plant Council SSpongeplantpongeplant sspreadingpreading iinn tthehe DDeltaelta Lars Anderson, USDA Agricultural Research Inside: Service, hold a mature South American spongeplant (Limnobium laevigatum). South American spongeplant ...............4 Spongeplant was fi rst reported in northern John Randall, fi rst president .................6 California in 2003 and is now spreading into Arundo maps and impacts report ........8 the Sacramento-San Joaquin Delta. Photo: th USDA-ARS 20 Annual Symposium .....................10 Hybrid Spartina Forum ......................13 From the Executive Director’s Desk Criticism is a good thing ust as America is a nation built by waves of immigrants, our natural landscape is a Cal-IPC shifting mosaic of plant and animal life… Designating some as native and others 1442-A Walnut Street, #462 “J Berkeley, CA 94709 as alien denies this ecological and genetic dynamism. It draws an arbitrary historical ph (510) 843-3902 fax (510) 217-3500 www.cal-ipc.org [email protected] line based as much on aesthetics, morality and politics as on science, a line that creates a A California 501(c)3 nonprofi t organization mythic time of purity before places were polluted by interlopers.” Protecting California’s lands and waters from ecologically-damaging invasive plants There are many things wrong with comparing human diversity with invasive species, as through science, education, and policy. Hug Raffl es does in his recent op-ed in the New York Times (April 3, 2011). However STAFF it is not an uncommon viewpoint to encounter; protection of native biodiversity can Doug Johnson, Executive Director Heather Brady, Outreach Program Manager sound like outright nativism. After wildfi re swept through Griffi ths Park in Los Angeles Elizabeth Brusati, Science Program Manager in 2008, a local elected offi cial dismissed the need for post-fi re invasive plant control Suzanne Harmon, Field Mapping Coordinator Ginny King, Program Assistant based on a respect for diversity. (Some people will even take this argument so far as to Agustín Luna, Business Manager point out that the Nazis were big on protecting native fl ora.) Bertha McKinley, Program Assistant Dana Morawitz, Mapping Program Manager Of course, human diversity might be better compared to the endemic biodiversity Tony Morosco, Mapping Specialist Cynthia Powell, Mapping & Modeling Specialist we are working to protect from invasive species. Less than 1% of all non-native plant Falk Schuetzenmeister, Mapping & Modeling Specialist species in California are considered invasive due to their impacts. There’s no moral Arpita Sinha, Training Program Specialist Jen Stern, Training Program Manager argument being made against all non-native species. Scientists do their best to gauge DIRECTORS impacts, which the author of the op-ed (an anthropologist) believes are actually a net Jason Giessow, President positive. Dendra, Inc. John Knapp, Vice-President Challenges to the validity of our work are frustrating. For instance, a recent panel at the Native Range, Inc. Doug Gibson, Treasurer Public Interest Environmental Law Conference 2011 at the University of Oregon in San Elijo Lagoon Conservancy March was titled “Environmentalism Gone Awry: The War on Invasive Species”. Talks Julie Horenstein, Secretary California Department of Fish & Game at the conference addressed “invasion biology’s scientifi c failings” and “the widespread Edith Allen poisoning of plants and animals.” University of California-Riverside Peter Beesley Pacifi c Gas and Electric But I think these challenges are good. For one, increased attention, even (or especially) Jason Casanova critical attention, refl ects a broader recognition of the issue of invasive species. More Los Angeles/San Gabriel Rivers Watershed Council than that, it provides an opportunity to engage people in thinking about the issue and Edmund Duarte Alameda County Department of Agriculture about ecology in general, which I think is key for creating a sustainable future. Valerie Eviner University of California-Davis If you enjoy contemplating the moral aspects of invasive species control, I recommend Kim Hayes Elkhorn Slough Foundation T.C. Boyle’s new novel When the Killing Stops. He fi ctionalizes past campaigns to con- Sue Hubbard trol invasive rats and pig populations on California’s Channel Islands, which produced Federal Employee Deb Jensen a strong backlash from local animal rights groups. The book is an exciting read, and El Dorado Arts Council Boyle ably demonstrates something we all need to remember: absolutism and self- Brent Johnson Pinnacles National Monument righteousness serve no one well. Shawn Kelly Southern California Wetlands Recovery Project Shea O’Keefe Cal-IPC Staff. Diagonal left to right: Tony Natural Resources Conservation Service Morosco. Row 2: Heather Brady, Falk Schuetzen- Peter Schuyler Ecological Consultant meister. Row 3: Jen Stern, Bertha McKinley, Andrea Williams Elizabeth Marin Municipal Water District STUDENT LIAISONS Brusati, Doug Annabelle Kleist, UC Davis Johnson. Lynn Sweet, UC Riverside Row 4: Arpita Affi liations for identifi cation purposes only. Sinha, Ginny Cal-IPC News Spring 2011 - Volume 19, Number 1 King. Suzanne Editors: Doug Johnson, Elizabeth Brusati, Heather Brady, and Harmon. Row Bertha McKinley 5: Agustin Luna Cal-IPC News is published quarterly by the California Invasive Plant Council. Articles may be reprinted with permission from Dana Morawitz. the editors. Submissions are welcome. Mention of commercial products does not imply endorsement by Cal-IPC. We reserve Not pictured: the right to edit all work. Cynthia Powell 2 Cal-IPC News Spring 2011 Wildland Weed NewsNewsNewsNewsNews The California Dept. of Food & Agricul- acres. (Oecologia, 2010 165:605-615. Medusahead (Taeniatherum caput-me- ture proposes to eliminate its programs Mar. 2, 2011, www.sciencedaily.com) dusae) is the fi rst well-established weed addressing weeds. See article p. 15. A study of 26 invasive plant species on to be proposed for the Federal Noxious Releasing Asian beetles to eat inva- four continents found little difference Weed List. Forest Service Employees sive saltcedar results in water savings. between numbers in introduced and for Environmental Ethics (FSEEE) has Researchers at UC Santa Barbara, USGS, native ranges. Instead, they found that petitioned to have it listed by the US and USDA have published the fi rst sub- increases in species abundance are unusu- Dept. of Agriculture under the Plant stantive data showing the water conserva- al, contradicting the common assumption Protection Act of 2000. Medusahead tion benefi ts of this biocontrol. During that invasive plants are more abundant invades millions of acres of western states the fi rst year of large-scale defoliation in their new settings. The authors believe and is considered a serious threat to by the tamarisk leaf beetle (Diorhabda that the success of a plant in its native habitat needed by the endangered greater carinulata) in northern Nevada, approxi- range may be used to predict its spread sage grouse (Centrocercus urophasianus). mately 2,500 acre-feet of water remained at introduced sites, a criterion which FSEEE hopes that adding medusahead in the ground rather than being lost to currently is not included in biosecurity to the noxious weed list will allow for the atmosphere, equivalent to the water screening programs. (Science Alert, Feb. regulations to prevent its spread by required to irrigate 1,000 agricultural 7, 2011, www.sciencealert.com.au) ...continued page 16 Cal-IPC Updates Arundo’s impacts Call for student nominations Another new Cal-IPC report quantifi es The Cal-IPC student chapter is Sierra recommendations the distribution and impacts of Arundo accepting nominations for student Cal-IPC used expert opinion data donax (see article on p. 8.) This liaisons to the Cal-IPC board. and suitability modeling report and the accompanying Liaisons attend board meetings to create geodatabase are available at in their part of the state and help “risk maps” www.cal-ipc.org/ip/research/ Cal-IPC provide more services to and develop arundo. students. Please send nominations to recommendations [email protected]. on eradication, Call for nominations containment, and The Cal-IPC Board of New staff surveillance for Directors is accepting Cal-IPC welcomes Mapping 43 invasive plant nominations until July 1 for Specialist Tony Morosco. Tony species in the Sierra new board members. Know co-founded and developed Calfl ora. Nevada. The report, someone that has a lot to org, and worked as Curator of Living including statewide offer? Or maybe you want Collections at the San Francisco maps, is available on to nominate yourself? Botanical Garden. He has served on CD or online at www. Elections will be held in late summer the boards of the East Bay Chapter of cal-ipc.org/ip/mapping/sierra. with new board members announced CNPS and the California Botanical at the Symposium in October. Board Society. th 20 anniversary terms are two years, beginning in The 2011 Symposium will be our January 2012. The board meets four 20th! (See p. 10 for details.) Do times each year at locations around the you have photos or memorabilia state, and requires a commitment to from past Symposia (especially fundraising, working on a committee, prior to 2003) to contribute to a and attending the Symposium. Please retrospective display? Send digital direct nominations and questions to photos with credit info and a caption [email protected]. Learn about current to [email protected]. Send prints board members at or slides to our mailing address, and www.cal-ipc.org/about/staff.php we will scan and return them to you. See you at the Symposium! Cal-IPC News Spring 2011 3 Feature Spongeplant: A new aquatic weed threat in Delta By Lars Anderson, USDA Agricultural Research Service, and Pat Akers, California Department of Food & Agriculture o, we’re not talking about Brazillian invaded eastern Nwaterweed (Egeria densa). The new regions of the US.
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