Langdon, Stephen F. , Oles, Hilary A. , Martine, Christopher T. .
Eradication of the aquatic invasive European frogbit (Hydrocharis morsus-ranae) from the Grasse River Wild Forest, Adirondack Park, NY.
Hydrocharis morsus-ranae (European frogbit, Hydrocharitaceae) is an invasive emergent aquatic species with a North American distribution that is so far limited to localized populations in Ontario, Quebec, New York State and Vermont. Efforts to eradicate an incursion at Lampsonís Falls in the Grasse River Wild Forest (Town of Clare, southern St. Lawrence County, New York) began in June of 2007. The infestation is less than a quarter acre in size in a forested wetland adjacent to the Grasse River. The site was sampled for H. morsus-ranae coverage, plus aquatic and terrestrial plant diversity in relation to the infestation. Volunteers and staff hand harvested approximately 450 kg of wet plant matter from the site in the first season. Permanent local eradication of this species is especially challenging because of the vigorous production of turions capable of recolonizing cleared sites and establishing populations in new sites. Results of the eradication effort and follow-up surveys are presented. Recommendations for limiting H. morsus-ranae recruitment and establishment are also discussed, including strategies for taking advantage of the phenological constraints of the species.
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1 - Adirondack Park Invasve Plant Program/Adirondack Nature Conservancy, P.O. Box 65, Keene Valley, NY, 12943
2 - Adirondack Park Invasve Plant Program/Adirondack Nature Conservancy, P.O. Box 65, Keene Valley, NY, 12943, USA
3 - State University of New York College at Plattsburgh, Biological Sciences, 101 Broad Street, Plattsburgh, NY, 12901
Presentation Type: Poster:Posters for Sections
Location: Ball Room & Party Room/SUB
Date: Monday, July 28th, 2008
Time: 12:30 PM