invasive shells left on the winter shoreline on cayuga lake in the nys fingerlakes

zebramussels winter water usnps undefined trillions tinyclam snow snail shoreline science saltpoint rocks quaggamussel propagation polymorpha plentiful piers pebbles oak nys nygov newyorkstate nature native myerspark mussels leaves lansing lakeshore lake ithaca invasive ice hypolimnetic hitchhiker freshwater flx floatermussel fingerlakesinvasives fingerlakes february environment driftwood dreissenid dreissena drained dangerous competition cold clogpipes clamshells chinesemysterysnail cce cayuga bugensis biomass biology biodiversity asianclam aquatic