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In the summers of 2005 and 2006 ASRA staff cooperated with the Adirondack Nature Conservancy (ANC) to inventory invasive species along the East Branch Au Sable from Hulls Falls Road to Au Sable Forks. 214 terrestrial invasive plant sites were found consisting of Purple loosestrife, Japanese knotweed, wild chervil, and Japanese barberry. In addition, 94 of the 214 infestations were Indian Cup-plant, Sylphium perfoiatum. Indian Cup-plant was also noted as far downstream as Keeseville.
Summer 2007 found the ASRA and ANC staff once again wading and paddling through streams to map invasives, this time on the West Branch. On Mill and Power Ponds of the Chubb River (a West Branch tributary) 17 sites covering 64,000 square feet were documented. There were no invasives noted on the Chubb or West Branch downstream of the ponds until Lake Everest in Wilmington where 5 sites totaling 2,607 spare feet were noted.
Summer 2007 found the ASRA and ANC staff once again wading and paddling through streams to map invasives, this time on the West Branch. On Mill and Power Ponds of the Chubb River (a West Branch tributary) 17 sites covering 64,000 square feet were documented. There were no invasives noted on the Chubb or West Branch downstream of the ponds until Lake Everest in Wilmington where 5 sites totaling 2,607 spare feet were noted.
Carol Treadwell inventorying purple loosestrife.
Semi-Aquatic Invasive Plants