Listing+Criteria

=CT ANS SPECIES LISTING CRITERIA=

Task Overview: A Review and Update of the Listing Criteria for Vertebrate, Invertebrate and Plant Aquatic Nuisance Species
//October 20, 2011 //

At it's April 2011 meeting, the CT ANS workgroup discussed possible revisions to the listing criteria that would provide guidance for priority management actions for each new class. The rationale behind the proposed revisions was that two key factors(whether the species has a potentially high impact, and whether any known means of control), could be used to classify species for management action, especially for Rapid Response by the CT DEEP. The discussion at the April meeting raised several key points. One, was that in some cases control strategies exist but there may not be the political will or resources to use them. Another point, was that while some ANS may have a relatively low impact from a statewide perspective, when such a species is introduced into anotherwise undisturbed area, rapid response may be desirable. The consensus seemed to be that rapid response decision would need to be considered on a case-by-case basis, and not driven by "Management Classes."

In response, the original management classes developed for the 2006 CT ANS Management Plan are being preserved, and the Draft CT Early Detection and Rapid Response plan provides a framework that will allow the decision to undertake Rapid Response to be made on a case-by-case basis. The Risk-Response matrix is now included in the EDRR plan as Appendix B, as a guidance tool for making rapid response decision.


 * Discussion Threads

Management Classes
The CTANS plan dated November 7, 2005 contained a general discussion of the process the Workgroup used in developing the original management classes. This is provided in the link below.


 * == CT ANS Plan Text Section "2.3 Priority Aquatic Nuisance Species" ==

[[file:Sec2_3_PriorityAquaticNuisanceSpecies_20051107.doc]]

 * == Management Classes ==

Class ||~ Description ||~ Criteria ||
 * ~ Management
 * 1 || Limited or Incipient Populations || Includes species that have limited or incipient populations within Connecticut waters ||
 * 2 || Established Species, Significant Impact, Some Practical Control Techniques Available || Includes species present and established in Connecticut with known impacts (or potential for impact) that may be mitigated or controlled with appropriate management techniques. ||
 * 3 || Established species, Significant Impact, No Know Effective or Practical Control Techniques Available || Includes species established in Connecticut, with known impacts (or potential for impact), but with no know available effective or appropriately effective management techniques. This category also includes some species that are considered to be so widespread that known control techniques are not feasible. ||
 * 4 || Established Species, Impacts Unclear || Includes species that are established in the waters of Connecticut and may have the potential to cause impacts, but current knowledge is insufficient to determine if control actions are warranted. ||
 * 5 || Potential ANS Invaders, Impacts Expected to be Severe || Includes species not yet present in CT waters having high likelihood of introduction and if introduced, expected to have significant biological and/or socio-economic impact ||

DISCUSSION THREADS
include component="comments" page="Listing Criteria" limit="50"