Thank you for joining us at the 2025 Cal-IPC Symposium!

Each video features a full session or workshop from our hybrid symposium, with minor editing to remove “deadspace” at the beginning and end of sessions. Posters and PowerPoint presentations are posted in PDF format on the 2025 Cal-IPC Symposium page in our archive.

Statewide WMA Meeting

(0:00) The Role of WMAs in Effective Weed Management. Presenter: Doug Johnson, Cal-IPC

(12:55) Ventura County WMA: EDRR and Education. Presenter: John Beall, Ventura Agricultural Commission

(29:34) San Diego WMA: Prioritization & Tracking for Invasive Plant Management. Presenter: Jason Giessow, Dendra, Inc.

(50:38) Santa Ana River/Orange County WMA: Strategic Planning for Effective Weed Management. Presenter: Matt Major, Orange County Parks

(1:06:10) Alameda/Contra Costa WMA: IPM and Rebuilding. Presenter: Wade Finlinson, Contra Costa County Health Dept.

(1:20:39) CDFA Program Update. Presenter: Trevor Fox, CDFA

(1:39:15) WeedCUT. Presenter: Jutta Burger, Cal-IPC

(1:50:59) Calflora . Presenter: Nikki Valentine, Cal-IPC

Career Panel

Career panel organized by Cal-IPC’s Students and Emerging Professionals Section (SEPS).

Workshop: Weeds 101: Integrated Pest Management (IPM) Fundamentals

Presenters: Lauren Quon, Cleveland National Forest; Tom Reyes, California Native Plant Society; Mandeep Riar, UC ANR

Herbicide Laws & Regulations

(0:00) The Weedslayer’s Code. Presenter: John Mikesell, Ventura County Dept. of Agriculture/Weights and Measures

(33:20) Beyond the active ingredient: Laws and regulations for pesticide adjuvants. Presenter: Krista Hoffmann, CA Dept. of Fish and Wildlife

(1:05:14) Pesticide Jeopardy! Presenters: Chris McDonald, UCCE; LeeAnne Mila, Agricultural Commission – El Dorado and Alpine Counties

Opening Plenary: Resistance and Weed Alerts

(0.00) Cal-IPC Welcome and Update. Presenter: Doug Johnson, Cal-IPC

(17:20) Restoring resistant communities. Presenter: Evelyn Beaury, New York Botanical Garden

(45:23) Before eradication: Preventing invasive species introductions and ecosystem differences in invasion resistance. Presenter: Sarah Kimball, UC Irvine

(1:14:50) Weed alerts and inventory updates for 2025. Presenters: Jutta Burger, Cal-IPC; Ron Vanderhoff, CNPS, Orange County Chapter

Rare Species and Rare Habitats

(0:00) Invasive species management in sensitive coastal foredune habitat. Presenter: Lindsey Roddick, The Land Conservancy of San Luis Obispo County

(21:30) Turning invasive fuel loads into habitat for endangered species. Presenter: Johnny Perez, Palos Verdes Peninsula Land Conservancy

(41:53) Invasive weeds and nitrogen deposition suppress ephemeral post-fire plant diversity. Presenter: Justin Valliere, UC Davis

Geospatial Technologies

(0.00) Weed mapping workflows using Esri GIS software. Presenter: Ingrid Hogle, SF Estuary

(21:49) Invasive Spartina Project: Virtual fencing to target medusahead and barb goatgrass on California rangelands. Presenter: Brian Allen, UCCE

(39:54) Evaluating invasive plant prediction accuracy across large geographic extents using airborne imaging spectroscopy. Presenter: Nicoletta Stork, The Center for Global Discovery and Conservation Science – Arizona State University

Weed Management Tools and Techniques

(0.00) Optimizing restoration strategies in iceplant-dominated landscapes of coastal California. Presenter: Nick Saglimbeni, UC Santa Barbara

(19:48) Integrating prescribed fire and grass specific herbicides: A strategy for annual wildflower restoration. Presenter: Christopher Berry, Cheadle Center for Biodiversity and Ecological Restoration, UC Santa Barbara

(36:23) Use of pre-emergent herbicides for site preparation. Presenter: Robert Freese, Irvine Ranch Conservancy

Southern California’s Forgotten Grasslands

(0.00) Surveying needlegrass grasslands to plan management actions and model habitat suitability in southern Orange County parks, California. Presenter: Matt Major, Orange County Parks

(21:36) Utilizing native and invaded grasslands as indicators for the ecological health assessment for the Nature Reserve of Orange County. Presenter: Megan Lulow, UC Irvine

(42:47) Plant community responses to rodent seed predation and precipitation in a semi-arid Californian grassland. Presenter: Samuel Louden, Dept. of Evolution, Ecology, and Organismal Biology, UC Riverside

New Horizons in Early Detections

(0.00) New and novel weeds in California state parks. Presenter: Leah Gardner, CA State Parks

(17:04) Up a creek without an EDRR program: Lessons from managing new invasions without a formal program. Presenter: Jennifer Mo, Santa Clara Valley Water District

(37:44) Fungal frontiers: What we know about invasive mushrooms in California. Presenter: Christian Schwarz, University of California Santa Cruz

Invasive Plants: Issues, Impacts, and Solutions

(0:00) Estimating water savings benefits of invasive plant removal using the OpenET remote sensing platform: a case study with Arundo donax. Presenter: Emily Zefferman, RCD of Monterey County

(21:13) Southern California ignition reduction program. Presenter: Nicole Molinari, USDA Forest Service

(41:06) Community challenges to herbicide use for conservation, part 2. Presenter: Alan Kaufmann, Laguna Canyon Foundation

Weeds and Pollinators

(0:00) A pollinator paradox: Weedy wildflowers support native pollinators under global changes. Presenter: Rebecca Nelson, Utah State University

(21:04) French broom impacts to native forb pollination and reproductive success. Presenter: Sara Grove, H.T. Harvey & Associates

(41:43) Evaluating bee species’ diversity and composition response to active restoration in Southern California. Presenter: Beckett Staubs-Friedmann, Santa Clara River Conservancy and UC Santa Barbara

Lightning Talks

(0:00) Public gardens as sentinels against invasive plants. Presenter: Michelle Beloskur, Midwest Invasive Plant Network

(8:50) Smart park management: A drone-based AI solution for vegetation health monitoring and wildfire risk mitigation. Presenter: Austin Zhang, Del Norte High School, Youth Care Club

(17:56) Evaluating effects of artificial light at night (ALAN) on biological control agents of yellow star-thistle (Centaurea solstitialis) in California. Presenter: Marielle Hansel Friedman, UC Davis

(26:10) Possible allelopathic effects of Cynara cardunculus on native coastal sage scrub species. Presenter: Anna Luo, Friends of Los Peñasquitos Canyon Preserve

(33:36) Conversion of riparian woodland to Arundo monoculture on Santa Clara River flood channel. Presenter: William Neill, Riparian Repairs

(46:14) Avian response to Arundo removal and native planting. Presenter: Devina Schneider, Santa Clara River Conservancy

(52:35) Developing guidance for managing invasive aquatic vegetation in tidal wetland sites. Presenter: Gina Darin, CA Dept. of Water Resources

(55:46) Resilience on the frontlines: A crew’s story of restoration, learning, and leadership on Catalina Island. Presenter: Brian Larson, Catalina Island Conservancy

Plenary: Resilience

(4:20) Beyond resistance: Building resilience and adaptation into the management of montane forests across Southern California. Presenter: Sarah Hennessy, San Diego State University Institute for Ecological Monitoring and Management

(29:33) Weaving knowledge, healing land: A community-based approach to resilience in the face of GSOB and altered fire regimes. Presenter: Joelene Tamm, La Jolla Band of Luiseno Indians

Protecting Deserts

(0:00) Salt Creek restoration for the benefit of desert pupfish: lessons and next steps. Presenter: Luis Ramirez, The Living Desert Zoo and Gardens

(20:55) Managing emergent invasive populations: Stinknet in the California Sonoran Desert. Presenter: Sean Deighan, The Living Desert Zoo and Gardens

(39:21) Evaluating the invasion regime attributes and impacts of Brassica tournefortii in a desert sand dune community. Presenter: Loralee Larios, UC Riverside

After the Storm: Managing Weeds Post-Firees

(0:00) Post-wildfire conditions: Prescribed fire influence on invasive species composition in blue oak woodlands. Presenter: Claire Monahan, Big Chico Creek Ecological Reserve

(20:57) A tale of two wildfires: Post-fire weed management. Presenter: Devyn Friedfel, Pepperwood Preserve

(42:27) Comparing retardant and wildfire impacts to invasive grasses in the post-fire environment. Presenter: Nicolas Graver, NPS and University of California Riverside

Wetland and Riparian Weeds

(0:00) Improving riparian resilience in the Ventura River Watershed. Presenters: Martin Schenker, Vivon Sedgwick, Rhett Walker; Ojai Valley Land Conservancy

(22:15) Not so Black(lock) and white: Managing invasive phragmites in endangered species habitat. Presenter: Gina Darin, CA Dept. of Water Resources

(40:46) Legacy effects of imazapyr soil residues on riparian forest reestablishment after giant reed (Arundo donax) removal. Presenter: Adam Lambert, UC Santa Barbara

Art, Culture, and Weeds

(0:00) Hip hop vs site hygiene: What could go right? Presenter: Constance Taylor, Cal-IPC

(24:41) Climate Country Radio. Presenters: Rita Hosking, Singer-Songwriter; Sean Feder, Musician

Lessons Learned in Weed Management

(0:00) Tamarisk and non-native invasive species removal in the Los Padres National Forest. Presenter: Doug Morgan, Holly Wright; Channel Islands Restoration

(20:47) Stinkwort in Santiago Creek: An EDRR success story. Presenter: Isaac Ostmann, Irvine Ranch Conservancy

(40:02) Long-term adaptive restoration in a dynamic floodplain: Lessons from a decade of managing giant reed in the Santa Clara River. Presenter: Sean Carey, UC Santa Barbara

Restoring Southern California Plant Communities

(0:00) Fire as a piece of the puzzle in coastal sage scrub restoration. Presenter: Joanna Tang, Vollmar Natural Lands Consulting

(19:58) Lord of the Flies or Neverland? Testing the efficacy of ‘restoration islands’ in southern California shrubland restoration. Presenter: Shane Dewees, UC Santa Barbara

(40:41) It takes a village (to save a river): The story of how a community effort transformed the San Dieguito River. Presenter: Jonathan Appelbaum, San Dieguito River Valley Conservancy

Closing Plenary: Recovery

(0:00) Awards

(8:05) What does ecosystem recovery look like after 130 years of invasive species? The story of Santa Cruz Island. Presenter: John Knapp, Catalina Island Conservancy

(31:15) Assisting recovery in the Santa Monica Mountains. Presenter: Joey Algiers, NPS Santa Monica Mountains National Recreation Area

(1:02:13) Closing. Presenter: Doug Johnson, Cal-IPC