BC government Welcome to the
B.C. Invasive Plant
Core Ranking Process

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BC Invasive Species Council

The Invasive Plant Core Ranking Process is a tool that will help land managers make invasive plant management decisions. The intent of the tool is to assist land managers in the identification of
  1. invasive plants that should be actively managed, and
  2. invasive plants that should be watched.
The Invasive Plant Core Ranking Process is publicly available but has primarily been developed for use by regional invasive plant committees, agencies (private and government), non-government organizations and professionals. It is expected that those using this process have a background in invasive plant management, and a basic knowledge of invasive plant biology and ecology.
The Core Ranking Process can be used at all scales - provincial, regional or individual land parcels - but is most applicable at the regional scale, such as regional districts, invasive plant committee regions or the regions of the Ministries of Agriculture, Environment, Transportation & Infrastructure, or Forests, Lands & Natural Resource Operations.
The ranking process will give a relative ranking that is replicable within a specific land base, and will help land managers identify the top three, five or ten species for management based on their available resources. Although it can be used by individuals, prioritizing regional species should be completed by a group familiar with invasive plants and the region.

The Invasive Plant Core Ranking Process will identify a species that is new or extremely limited in the management area, but it is not yet linked to an Early Detection Rapid Response (EDRR) protocol.
Invasive plant species that are new to a management area should be reported to a Provincial Invasive Plant Specialist.
Provincial and regional invasive plant specialists are located in the BC Ministry of Forests, Lands & Natural Resource Operations. New species can also be reported online via the Report a Weed tool, in the Invasive Alien Plant Program (IAPP).

Some land managers may wish to add supplemental criteria to meet specific objectives and needs. Examples of potential supplemental criteria have been drafted; however, they are still under development and will be finalized pending future funding.
For more information on supplemental criteria, please contact the IPCBC or the BC Ministry of Forests, Lands & Natural Resource Operations.

Directions for use of the Core Ranking Process:

  • If you are ranking species for a very large management unit, or the entire Province, select the Large Management Area option. If you are ranking species for a smaller management unit, such as a regional district or a specific site, select the Local Management Area option.
  • The Ranking Process will rank up to five species at one time. Enter the names of the invasive plants being ranked in the boxes at the top of the questionnaire.
  • The questions are divided into four categories: Biology, Ecology, Species Impact, and Management Potential.
  • To complete the Process and receive a score, you must answer all 19 questions; if one or more questions remain unanswered, you will be prompted to verify your answers when you click the Total Scores button at the end.
  • Once you are finished and want to rank additional species, simply click the Clear Scores button at the bottom of the questionnaire and start again.