Aug 05, 2005 — Non-native plant species like zebra mussels, water milfoil, and purple loosestrife are called "invasives." They can overwhelm native species, upsetting whole ecosystems. In the Adirondacks, private groups that have been fighting invasives for years are now hoping for public help. Invasives are considered one of the most serious threats to the region's, and the state's, environment. A state task force studying the problem brought its draft report and recommendations to a meeting in Ray Brook this week. As Chris Knight reports, members found a receptive audience, with its own suggestions.