Join a FREE monthly webinar to hear from the experts about invasive species, with topics ranging from data management, education and awareness, invasive species management and legislation.

NAISMA Webinars 

All webinars are open to the public. 

Any member of the public can register for a webinar and view it when it is live.

Only NAISMA members have access to recorded webinars. Join today and access webinars in the Members’ Area.


Mark your calendars for the 3rd Wednesday of every month:
2pm Eastern  |  1pm Central  |  12pm Mountain  |  11am Pacific
An overview of watercraft inspection and decontamination programs across the United States

January 15th at 1:00 pm CST

Presented by: Elizabeth Brown, Colorado Parks and Wildlife and Chair, Western Regional Panel on Aquatic Nuisance Species

The recording of this webinar is now available to members.

Elizabeth will provide an overview of watercraft inspection and decontamination (WID) programs across the United States. She will begin by describing the history of invasive mussels and evolution of WID in the Western US, which will include summarizing the National Legal Framework for State Aquatic Invasive Species (AIS) Programs, operational standards for managers, and data sharing. She will provide a summary of the various WID types and models in use and their associated purposes. Finally, Elizabeth will explain the foundational elements of the Colorado program, including risk assessment, and will demonstrate how other governments non-governmental organizations and industry partners can engage to stop the spread of invasive mussels and other AIS by managing the watercraft vector.

Elizabeth Brown has been working on invasive species management for twenty years and has served as the Invasive Species Program Manager with Colorado Parks and Wildlife since 2008. Previously, she served as the Stewardship Coordinator for Colorado State Parks and the Early Detection Rapid Response Specialist for the Colorado Noxious Weed Program. Elizabeth’s current duties focus on aquatic invasive species, including watercraft inspection and decontamination, sampling, monitoring, education, outreach and policy. Elizabeth also operates a laboratory that provides identification of aquatic plants, molluscs and crustaceans. Elizabeth also coordinates terrestrial invasive species plant and animal management within Colorado Parks and Wildlife.

Risk Analysis Framework and Overcoming Roadblocks to Implementation

February 19th at 1:00 pm CST

Presented by: Deah Lieurance, University of Florida

Pest risk analysis (PRA) is the process of evaluating biological or other scientific and economic evidence to determine whether a pest should be regulated and the strength of any phytosanitary measures to be taken against it. In the world of invasive plant species management, PRA is used to identify high risk non-native plants as early as possible, thus reducing environmental and economic impacts. In Florida, these detrimental ecological and economic impacts are especially evident in heavily invaded ecosystems. Preventing high-risk species from being introduced into natural areas and managing invasive species early in the invasion process can reduce these effects. To identify plant species most likely to invade and cause damage in Florida’s natural areas, the University of Florida’s Institute of Food and Agricultural Sciences (IFAS) developed “The UF/IFAS Assessment of Non-Native Plants in Florida’s Natural Areas.” The IFAS Assessment utilizes risk assessment protocols to evaluate the status of non-native species either present in the state or prior to introduction. The goal of the IFAS Assessment is to provide reliable, comprehensive recommendations for the use of non-native plant species. Results are accessible through an interactive, searchable website that can be filtered by geographical zone, conclusion type, origin, and growth habit. Currently, conclusions are available for approximately 900 species.

NISAW Advocacy and Education Webinars 

All webinars are open to the public. 

Any member of the public can register for a webinar and view it when it is live. Learn more about the National Invasive Species Awareness Week.

11:00 a.m. – 12:00 p.m. CST

The National Invasive Species Council (NISC) was established to provide the vision and leadership to coordinate, sustain, and expand federal efforts to safeguard the U.S. from invasive species and their impacts. Over the past year, NISC has worked to reenvision itself institutionally and programmatically through the development of terms of reference and a new FY2020 Work Plan. These guidance documents focus on NISC’s high-level, whole-of-government perspective and direct the efforts of NISC staff toward convening and coordination to leverage existing efforts and amplify the federal impact in the fight against invasive species. In highlighting these efforts, this webinar will review NISC’s coordination mechanisms, its current thematic priorities, and efforts to engage with non-federal stakeholders. In addition to the presentation from NISC staff, senior advisers from the three NISC Co-Chair agencies will provide their perspectives on these federal coordination activities.
  • Stas Burgiel, NISC Executive Director
  • Jeff Morisette, NISC Chief Scientist
  • Hilary Smith, Department of the Interior, Senior Adviser for Invasive Species
  • Phil Andreozzi, US Department of Agriculture, Invasive Species Coordinator
  • Jeanette Davis, Department of Commerce/National Oceanographic and Atmospheric Administration, Ocean Science Policy Adviser


> More Info and Register Here

1:00 – 2:30 p.m. CST

Sponsored by the Washington Invasive Species Council

Vectors and patterns of freshwater fish introductions across the United States over time.

There are numerous vectors for introducing and spreading aquatic species, which may vary in importance and impact both spatially and temporally due to a variety of factors including species’ biology, human behavior, demography, and geopolitical issues. Here I will examine spatial and temporal change in vectors of fish introductions in the United States. Most vectors have shown a general increase in number of species introduced over time. Sanctioned (i.e., stocking by natural resource agencies) and non-sanctioned (i.e., aquarium dumping) intentional releases have historically been the major vectors of fish introduction over time. Vectors show differential geographic importance, with stocking more prevalent in western states and non-sanctioned release in the southeast. Governmental policy changes (e.g., ballast water regulations, natural resource management practices) and heightened awareness and education about impacts of introduced species may be driving a recent reduction in number of introduced species.

> More Info and Register Here

1:00 – 2:00 p.m. CST

Leigh Greenwood

The Nature Conservancy

The regulations that apply to firewood are often not entirely about the firewood itself, which makes it hard to fully categorize and understand the tangled web of rules and quarantines in North America. This webinar was first presented in 2018 and was so popular that it has become an annual tradition (as the regulations do change fairly often!). During this presentation, the manager of Don’t Move Firewood, Leigh Greenwood, will describe all the different ways in which current regulations criss-cross to create a confusing, and fascinating, regulatory landscape. This year, she’ll include the hot topic of the potential deregulation of emerald ash borer as well- and how that might interface with existing and/or new state based regulations. As always, she’ll do her best to accurately represent the scope of a whole continent’s rules and regulations in just one action-packed hour.


Leigh has worked for The Nature Conservancy since December 2007. Her work focuses on bringing multiple stakeholders together to achieve common goals in Forest Health, including: managing the Don’t Move Firewood campaign, convening the Continental Dialogue on Non-native Forest Insects and Diseases, and working to improve the international biosecurity measures in place for solid wood packaging. Leigh’s leadership of the Don’t Move Firewood campaign has led to its being widely regarded as one of the most innovative public outreach arms of The Nature Conservancy. Leigh earned her B.A. in Biology at Williams College and her M.S. in Wildlife Biology at the University of Montana in Missoula, where she studied the intersection of native wildlife and invasive plants.

> Register here

1:00 – 2:00 p.m. CST

Stephen Enloe

University of Florida

Triclopyr is an auxin type herbicide that is widely used for invasive plant control in aquatic and upland systems.  Historically, there have been two formulations, an ester and an amine, which have generally separate but occasionally overlapping use patterns. This has resulted in confusion among many land managers on what triclopyr formulation to use. Recent advances in triclopyr technology may exacerbate this issue as two additional triclopyr formulations, an acid and a choline have become available. This talk will help land managers overcome triclopyr formulation confusion and provide clear technical specifications on the similarities, differences, and label use patterns of the four formulations.



Dr. Stephen Enloe is an Associate Professor in the Agronomy Department and has been housed at the IFAS Center for Aquatic and Invasive Plants in Gainesville, Florida since 2015. Dr. Enloe earned his Ph.D. in 2002 at the University of California Davis in Plant Biology. He has been involved with invasive plant research and extension for the past 17 years. His research and extension programs are divided between aquatic and upland invasive plant biology, ecology, and management. 

> Register here

1:00 – 2:30 p.m. CST

Dan Wixted, Cornell Pesticide Management Education Program

Anthony Hay, Cornell Department of Microbiology

Glyphosate (the active ingredient in herbicides such as “Roundup®” and other weed control formulations) has been much in the news in today’s world of social media and 24-hour news cycles. Are you hearing conflicting and confusing information about exposure, toxicity and its health effects as you try to stay abreast of the recent science? Join Dr. Anthony Hay from Cornell University’s Department of Microbiology and Dan Wixted of Cornell’s Pesticide Management Education Program (PMEP) as they separate the wheat from the chaff. Their presentation will give an overview of current science-based discussions about exposure, toxicity and health effects. They will also provide some background on basic principles in toxicology and pesticide registration to round out your understanding of the current information.


Since 2002, Dan Wixted has been an Extension Support Specialist with Cornell’s Pesticide Management Education Program after having spent 11 years in a similar capacity with Wisconsin’s program. In addition to developing pesticide applicator certification training manuals and exams, Dan provides information and outreach support to Cornell researchers investigating the environmental fate and health effects of glyphosate as well as pesticide effects on pollinators, the latter earning him a share of the Outstanding Accomplishment in Extension award as part of Cornell’s Pollinator Health Team. He’s a member of New York State’s Community IPM Coordinating Council, has served on EPA’s Certification and Training Assessment Group, and has been named a Fellow of the American Association of Pesticide Safety Educators.

Dr. Anthony Hay is an Associate Professor in Cornell’s Department of Microbiology. He received his Ph.D. from the University of California. Part of his research program has involved joining several others at Cornell who have been looking into various aspects of the environmental fate and potential health effects of glyphosate.

> Register here

1:00 – 2:00 p.m. CST

Robert Walters
Robert Walters will provide a brief overview of the AIS of highest concern and corresponding management strategies. The presentation will focus on pathway management for high priority species, including successes, challenges, and gaps. Robert will provide a summary of multi-jurisdictional coordination efforts that are ongoing, in addition to public-private partnerships.  Finally, Robert will discuss key legislation that supports AIS prevention and management efforts.

Robert Walters has served in the Invasive Species Program for Colorado Parks and Wildlife since 2012.  Robert’s main duties are centered around managing the largest mandatory watercraft inspection and decontamination (WID) network in the nation to prevent the introduction of zebra and quagga mussels and other aquatic invasive species (AIS) into the nation’s headwaters. Robert is also the Chair of the Western Regional Panel’s WID Think Tank Committee and is the manager of the Regional WID Data Sharing System. Prior to working for CPW, Robert worked in mosquito control and noxious weed management.

> Register here

Individual plant treatment techniques for woody invasive species in the US

March 18th at 1:00 pm CST

Presented by: Stephen Enloe, University of Florida

Individual plant treatment (IPT) approaches are widely used for invasive plant management across the United states. However, there can be tremendous variation in IPT methods and approaches that can result in sub-optimal control of many troublesome species. This seminar will present a deep dive on the technical aspects of IPT for cut stump, hack and squirt, and basal bark approaches to woody invasive plant control. Participants will gain a clear understanding of these techniques and be able to successfully implement them across a range of woody invasive plants.

Invasive Bark and Ambrosia Beetles: Their Impacts and Detection

April 15th at 1:00 pm CST

Presented by: Robert (Bob) Rabaglia, USDA – Forest Service

Bark and ambrosia beetles are one of the most commonly intercepted groups of insects at US ports, and one of the most commonly established non-native species across the country. Although most of the more than 60 species of non-native bark and ambrosia beetles established in the US are not severely impacting US forests and trees, some species have had significant impacts. This webinar will highlight some of these species, and discuss what they have in common. The US Forest Service program of early detection of these potentially damaging species will also be discussed.

Public Gardens as Sentinels Against Invasive Plants

May 20th at 1:00 pm CST

Presented by: Kurt Dreisilker, Morton Arboretum

Public gardens can fulfill an important role in society by acting as sentinels for new invasive plants, particularly since many invasive plants originate from horticulture. This can be accomplished by collecting, synthesizing, and sharing data about how taxa spread from their original sites of cultivation into adjacent areas of their property. These data can be much more impactful if collected, structured, and shared using a common methodology. To this end, the Public Gardens as Sentinels against Invasive Plants working group has developed recommended guidelines to help gardens organize and share their data from their collections to characterize when plants escape from cultivation. PGSIP has also developed a database for gardens to upload and access information about plants spreading from cultivation. By collecting data from gardens across North America, PGSIP hopes to be able to provide a clear picture about plants escaping cultivation and potentially becoming problematic before large-scale invasions occur and before commercial adoption of these taxa into the broader horticulture industry.

Making educational signage that people actually read, according to the experts

June 17th at 1:00 pm CST

Presented by: Forest Eidbo, Minnesota DNR

Interpretive signage is the dominant medium of education at most parks and protected areas. While many studies examine how visitors read signage, none have looked at how professionals write them. Using existing literature as a framework, this presentation outlines best practices from experts in the field on how to produce interpretive text. Through two online surveys to interpretive planners, this study collects the opinions on the use of questions, personal pronouns, figurative language, audience and more. The results from the two rounds of surveying produced 12 recommendations for interpretive writers to create signs like experts.

Invasive forest pests in the U.S.: Impacts and policy solutions

July 15th at 1:00 pm CST

Presented by: Gary Lovett, Cary Institute of Ecosystem Science

Invasive forest pests and pathogens, imported as an unwanted byproduct of international trade, are one of the most severe and underappreciated threats to the health of US forests. This webinar will describe the extent of the problem, summarize the ecological and economic impacts of invasive pests in the US, and propose policy solutions to prevent new pests from entering the country.

How biocontrol agents are approved and how to access them for your invasive species management needs

August 19th at 1:00 pm CST

Presented by: Richard Lee, Bureau of Land Management

Leaps and Bounds – How to jump over the barriers to preventing the spread of invasive species

September 16th at 1:00 pm CST

Presented by: Ken Donnelly, Beyond Attitude Consulting

Webinar participants will learn how to develop strategies that will break down the barriers to preventing actions that prevent the spread of Aquatic Invasive Species. We will base the approach on the barriers as determined by 2019 research in Minnesota.
To Be Announced

October 21st at 1:00 pm CST

Presented by: TBA


November 25th at 1:00 pm CST

Presented by: TBA


Recordings of previous webinars are available to current members in the Members’ Area.

Become a NAISMA member here.