Ohio River Valley Cooperative Invasive Species Management Area (CISMA)


Ohio River Foundation has received a grant to help establish a Cooperative Weed Management Area for SW Ohio, SE Indiana, and Northern Kentucky. Along with ORF, the initial partners are Great Parks of Hamilton County, Cincinnati Park Board, and Clermont County Park District. Read More - PRESS RELEASE HERE

Public Workshops: Sept. 12 Cincinnati Nature Center-4949 Tealtown Rd., Milford, OH 45150 (6-8pm) and Sept. 15 Fernald Preserve - 7400 Wiley Rd., Hamilton, OH (6-8pm). No registration necessary. Information about invasive plant species will be presented in the first hour, followed by a walking tour to see invasive plants on the premises.

Commercial Workshop: Sept. 13. REGISTER HERE

CISMA formation meetings will take place starting in October 2016.

We are outnumbered.

Invasive plants are expanding across the landscape faster than people can stop them. Cooperative Weed Management Areas are how local groups can manage invasive plants across political boundaries for the benefit of all.

Plants are trickier than they look.

Plants have many survival strategies: some species have overcome many barriers to become a biological nuisance in habitats around the world. Understanding the life history of invasive species is the secret to successful management.

If this were easy, we wouldn’t be here.

Look before you leap! Invasive plants are formidable, resilient creatures. Knowing the options available for managing invasive plants is critical; using multiple methods increases the likelihood of success. For best results, you must know which method is the best fit for the situation.

We need to fix this together.

You can help prevent or control the spread of invasive plants on your own, or through a local conservation organization. CWMA partner organizations are working together successfully to protect local wildlands and waters.

What is a CWMA?

A Cooperative Weed Management Area (CWMA) is a partnership of federal, state, and local government agencies, tribes, individuals, and various interested groups that manage invasive species (or weeds) within a defined area. In different parts of the country, CWMAs are known by other names, including: Cooperative Invasive Species Management Area (CISMA), Partnership for Regional Invasive Species Management (PRISM), Weed Management Area (WMA), Invasive Species Teams, and Invasive Species Partnerships. Although these groups may be organized differently, they share six basic characteristics:

  • CWMAs operate within a defined geographic area, distinguished by a common geography, weed problem, community, climate, political boundary, or land use.
  • CWMAs involve a broad cross-section of landowners and natural resource managers within its defined boundaries.
  • CWMAs are governed by a Steering Committee.
  • CWMAs make a long-term commitment to cooperation, usually through a formal agreement among partners.
  • CWMAs have a comprehensive plan that addresses the management or prevention of invasive species within its boundaries.
  • CWMAs facilitate cooperation and coordination across jurisdictional boundaries.

CWMAs bring together local citizens, landowners, nonprofit organizations, industry, and city, county, state, tribal, and federal representatives to work towards a common goal—effective control of invasive species.


Center for Invasive Specie Management: http://weedcenter.org/cwma/index.html

Crooked River CWMA: http://crcwma.org/index.php/get-involved/cwma-members/