Advisory Council

Advisory Council

What is the Advisory Council?

The Nebraska Invasive Species Council (NISC) was formed in 2012 by the Nebraska Legislature to serve as an advisory council for state invasive species policy and to coordinate management and research efforts across the state focused on preventing, detecting and managing invasive species. The Nebraska Invasive Species Program coordinates the council and provides outreach, management and research information to the public and stakeholders.  A copy of the legislation creating this Council can be accessed here: Download.


  1. Recommend action to minimize the effects of harmful invasive species on nebraska’s citizens in order to promote the economic and environmental well-being of the state;
  2. Develop and periodically update a statewide adaptive management plan for invasive species as described in section 15 of the legislation;
  3. Serve as a forum for discussion, identification, and understanding of invasive species issues;
  4. Facilitate the communication, cooperation, and coordination of local, state, federal, private, and nongovernmental entities for the prevention, control, and management of invasive species;
  5. Assist with public outreach and awareness of invasive species issues; and
  6. Provide information to the legislature for decision making, planning, and coordination of invasive species management and prevention.

The adaptive management plan required under section 14 of the legislation will address the following:

  1. Statewide coordination and intergovernmental cooperation;
  2. Prioritization of invasive species response and management;
  3. Early detection and prevention of new invasive species through deliberate or unintentional introduction;
  4. Inventory and monitoring of invasive species;
  5. Identification of research and information gaps;
  6. Public outreach and education;
  7. Identification of funding and resources available for invasive species prevention, control, and management; and
  8. Recommendations for legislation regarding invasive species issues.

Next Advisory Council Meeting:

March 9, 2018
10:00 AM-12:00 PM
901 Hardin Hall, UNL East Campus
3310 Holdrege Street, Lincoln, NE





  • Justin King-representative of an electric generating utility
  • TBD-Nebraska Game and Parks Commission:
  • John Erixson-Nebraska Forest Service of the University of Nebraska-Lincoln:
  • Tom Powers-University of Nebraska-Lincoln (UNL):
  • Craig Allen-Nebraska Cooperative Fish and Wildlife Research Unit (UNL):
  • Todd Boller-Nebraska Weed Control Association:
  • Todd Siel-Nebraska Association of Resource Districts:
  • Arnie Stuthman, Gary Hellerich, Kim Todd & Justin Evertson-Members at large appointed by the Governor


  • Allison Zach-Coordinator of the Nebraska Invasive Species Program


  • Carmen Thomson-National Parks Service
  • Chris Helzer– The Nature Conservancy
  • Ritch Nelson-USDA Nebraska Natural Resource Conservation Service (NRCS)
  • Cindy Stuefer-Powell-USDA Animal and Plant Health Inspection Service (APHIS)
  • Mitch Coffin-Nebraska Department of Agriculture:
  • Brenda Densmore-USGS Water Science Center


In alphabetical order

 NISP photos May 2014 008

Allison Zach-Coordinator, Nebraska Invasive Species Program

Allison is the Invasive Species Program Coordinator for all state and federal agencies and non-governmental organizations involved in invasive species research, management and policy across the state of Nebraska. She collaborates with agencies and organizations to develop state-wide invasive species management plans to aid partners with invasive species management and prevention. In addition to collaborating, she coordinates activities of and represents the Nebraska Invasive Species Advisory Council as the liaison with the State Legislature. Allison develops materials and provides outreach to Nebraska governments, individual stakeholders, and the general public regarding the management, and research of invasive species. She also networks with other invasive species biologists in the state and region, including diverse stakeholders such as the public, state and federal government agencies, non-government organizations and others.

Allison received her B.S. in Fisheries and Wildlife from the University of Nebraska-Lincoln in 2004 and M.S. in Wildlife Management from Minnesota State University in 2010. Prior to joining the Coop Unit, Allison worked at the Nebraska Department of Roads for 5 years where she was responsible for writing National Environmental Policy Act (NEPA) documents, managing projects, training and supervising staff, and development of public guidance documents and web pages. She hired, managed and trained consultants to complete environmental reviews of transportation projects. She served as a liaison with state, federal, and non-governmental organizations including Natural Resources Districts, the Nebraska Game and Parks, U.S. Fish and Wildlife Service, U.S. Army Corps of Engineers, Natural Resource Conservation Service, APHIS-Wildlife Services, and the National Parks Service. Allison previously worked at the Nebraska Department of Environmental Quality conducting training and providing guidance documents to staff and the public on regulatory air permitting requirements. Allison previously served as the intern coordinator for Senator Chuck Hagel in Washington D.C. which provided her firsthand experience meeting with constituents, preparing legislation, and networking with Senate staff and Nebraska legislators.


Brian Crabtree-Hamilton County Weed Superintendent and President of the Nebraska Weed Control Association.  He is the Vice Chairman of the Platte Valley Weed Management Area.  He graduated from Aurora High School in 1975 and has been involved in agriculture in one way or another since his graduation.  He resides in Aurora, NE.  He is married to Kim. His son Benjamin and his wife Jenna have a 1 year old named Kaiya.  His daughter Heather and husband Steven have a 3 year old named Ella.


Carmen Thomson-Carmen serves as the Midwest Region Inventory and Monitoring Program Manager. She is duty-stationed out of the Midwest Regional Office in Omaha, Nebraska. There she supervises three inventory and monitoring networks (Northern Great Plains, Heartland, and Great Lakes). These Network are responsible for conducting long-term natural resource inventories (e.g., fish, mammals, birds, plants, geology, etc.), and coordinating the development of numerous long-term monitoring protocols for approximately 40 national park units within a 13 state area in the Midwest. Carmen also supervises three Exotic Plant Management Teams that are charged with inventorying, monitoring, and eradicating exotic invasive species in the Midwest Region. The Exotic Plant Management Teams are also partners in several cooperative weed management areas in Nebraska, South Dakota, and Wisconsin and she helps to facilitate collaboration with local weed management groups and universities on large restoration activities as well.



Craig Allen-Unit Leader, Nebraska Cooperative Fish & Wildlife Research Unit USGS & University of Nebraska–LincolnCraig Allen received his Ph.D. in Wildlife Ecology and Conservation from the University of Florida in 1997, a MS in Wildlife Science in 1993, from Texas Tech University and a B.S. in Biology from the University of Wisconsin–Green Bay in 1989. He held a post-doc position in Zoology at the University of Florida working with C.S. Holling on investigations of the relationships between diversity and resilience, and variability and scale breaks in biological and other systems. Earlier in life, he was raised mostly in Madison, Wisconsin, but was born in Berkeley, California and has also lived in South Hampton and Oxford, England, and Katwijk Aan Zee, the Netherlands. Dr. Allen was the Unit Leader for the South Carolina Cooperative Fish and Wildlife Research Unit, and an Associate Professor in the Department of Forestry and Natural Resources and the Department of Biological Sciences at Clemson University. He became leader of the Nebraska Cooperative Fish and Wildlife Research Unit in 2004.


Justin Hydro 2012

Justin King-Environmental Specialist, Nebraska Public Power DistrictJustin grew up on a farm by Newman Grove, received his B.S. in biology from Midland Lutheran College, and received his M.S. in Wildlife Ecology from the University of Nebraska-Lincoln. He worked for the U.S. Fish and Wildlife Service in Grand Island with threatened and endangered species. Since 1993, he has worked in the Environmental Department for Nebraska Public Power District in Columbus. Besides invasive species, he works with power plants, river and lake monitoring, fisheries, and bird – powerline interactions.

In addition to being on the NISC, he is on the board of directors for Keep Columbus Beautiful, Keep Nebraska Beautiful, the Columbus High Sports Booster Club and is a certified Hunter Education instructor. His wife, Chris, and he enjoy traveling and visiting National Parks. They are parents of two college students. His hobbies include hunting, shooting sports, and working with people.





Mitch Coffin, Program Manager, Noxious Weed Program, Nebraska Department of AgricultureIn the spring of 1985, Mitch was appointed as Polk County Weed Control Superintendent. He was an active member of the Nebraska Weed Control Association where he served on the board of directors. Mitch also served as Vice President for one year and President for six months. In September 1991, Mitch accepted a position with the Nebraska Department of Agriculture as an Agricultural Inspection Specialist in the noxious weed program. In 1993 he was promoted to Staff Supervisor and in 1998 promoted to Program Manager. Mitch oversees the day to day operation of Nebraska’s noxious weed program and supervises three field staff who work directly with each county weed control authority. The field staff has been instrumental in building a good program. These folks are on the front line everyday working with each county to monitor, evaluate and assist.

Beginning in 2007, Mitch has assisted with the implementation of the Riparian Vegetation Management Task Force and grant program to improve invasive plant management on Nebraska’s river systems.

Noxious weed control has been a challenge throughout the years. Mitch enjoys working with each County Weed Control Authority and is proud of the progress made across the state. Public awareness is a key component to a successful program.

Mitch is also a co-author of Weeds of the Great Plains which was released in the spring of 2003.


Tom Powers, Tom is a Professor  at the University of Nebraska-Lincoln in the Department of Plant Pathology.  He has been in this position since 2006.  His publications most related to his project include:

  • Powers,T.O., Neher, D.A., Mullin, P., Esquivel, A., Giblin-Davis, R.M., Kanzaki, N., Stock, S.P., Mora, M.M., and L. Uribe-Lorio. 2009. Tropical nematode diversity:Vertical stratification of nematode communities in a Costa Rican humid lowland rainforest. Molecular Ecology 18: 985-996.
  • Powers, T.O., Harris, T.S., Higgins, R.S., Sutton, L.A., and K. S. Powers. 2010. Morphological and molecular characterization of Discocriconemella inarata, an endemic nematode from North American native tallgrass prairies. Journal of Nematology 42:35-45.
  • Powers, T.O. and Ramirez-Suarez, A. 2012. Molecular diagnostics of nematodes: some practical considerations. in Practical Plant Nematology. Eds Manzanilla-López and Marbán-Mendoza. Biblioteca Básica de Agricultura, Estado de México, México.
  • Porazinska, D.L., Giblin-davis, R.M., Esquivel, A., Powers, T.O., Sung, W. and Thomas, W.K. 2010. Ecometagenetics confirms high tropical rainforest nematode diversity. Molecular Ecology19: 5521-5530.
  • Todd, T.C., Powers, T.O., and P.G.Mullin. 2006. Sentinel nematodes of land-use change and restoration. Journal of Nematology 38:20-27