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Monday, October 29 • 4:15pm - 6:15pm
Poster Session. Mapping an Invasive Species (Lythrum salicaria) and Its Biological Control in Northern NY

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AUTHORS: Jessica Rogers*, Matthew King, Robert Luckman, Randy Monica Jr., Nolan Rishe – SUNY Potsdam

ABSTRACT: Purple loosestrife (Lythrum salicaria) is an invasive species in North America. Though it has been in the US for over a century, its invasiveness has increased in the last 50 years, particularly in Northern NY. In July 2017, I began a project to map the invasion of purple loosestrife (Lythrum salicaria) in the North Country. Four student interns who worked on this project as. We had several goals – to document the invasion, to examine the best methods for managing the invasion, and to understand if it might be possible to release a biological control agent. Because biological controls, a beetle in this case, require large infestations to establish their own breeding colony, we needed to map the size of invasions. We spent 4 weeks (mid-July to mid-August) gathering data on locations and coexisting invasive species. The NY DEC agreed to catch and allow us to release a biological control, a beetle known to eat almost solely loosestrife, at the Upper and Lower Lakes Wildlife Management Area (one of the largest infestations). In June 2018, we went out to the largest infestations from 2017 to see if there were existing populations of beetles eating the loosestrife. The beetles arrived and were released in July 2018. We were able to repeat the mapping work in the summer of 2018, and document changes and add layers of known beetle herbivory and sightings. Ultimately, we hope to advocate for management of this species after spatially demonstrating need.

Monday October 29, 2018 4:15pm - 6:15pm EDT

Attendees (1)