Some questions for the Rapid Assessment Team Is the plant identified correctly? What is its historic, current, and predicted distribution at different scales? History and vectors; where did it come from and how did it get here? What is its expected potential for dispersion to other sites? What elements of biodiversity might be affected by its spread and establishment?
More questions Can it be controlled effectively? What will it cost to control? Who will be responsible for its control at this site? at new incursions? Are there problems created by control? What happens if we don’t take action now?
Remember: Site visits can be fun!
Recommendations Attempt to determine the history of the incursion Important so the introduction is not repeated
Probable source: wool waste from the Barre Woolen Mill in the 1970s
Recommendations Attempt to determine the history of the incursion Check surrounding land for additional incursions Especially lands managed by same farmer
Recommendations Attempt to determine the history of the incursion Check surrounding land for additional incursions Check status of other New England occurrences
OH, $&*%!
More field work here
Recommendations Attempt to determine the history of the incursion Check surrounding land for additional incursions Check status of other New England occurrences Control, aimed at removal
CONTROL GUIDELINES Mowing Pre-determined time Pay landowner for labor Avoids herbicides Relatively inexpensive Likely to quickly lower numbers Prevents spread of wind-dispersed fruits
Recommendations Attempt to determine the history of the incursion Check surrounding land for additional incursions Check status of other New England occurrences Control, aimed at removal Landowner education; outreach
Recent reports 1 misidentification – Sonchus arvernsis 1 correct report – Boston Harbor Islands
Senecio jacobaea in New England 1903 Portland, Maine 1910 Danvers, Massachusetts 1938 Brookfield, Massachusetts 1968 Newbury, Massachusetts 2000 Bar Harbor, Maine 2002 Barre, Massachusetts 2003 Boston, Massachusetts
Still to do… Additional field work Gather ecological data Finish & implement action plan Predictive modeling Continue to support landowner’s goals Distribute “Wanted” posters Eradicate Stinking Willie
In conclusion Early Detection and Rapid Assessment can be very effective tools Lots of trained observers out in the field are needed Have an quick and easy reporting mechanism for new or unknown plants Rapid Assessment must involve a wide range of knowledgeable people and local stakeholders The public must be engaged in the process Follow-up monitoring is mandatory
NO NEW INVASIONS