Publication Summary

The Washington State Department of Ecology conducted a survey on the Pend Oreille River to compare fish communities from a naturally weeded (non-rotovated) and trail- rotovated habitat. Differences could not be determined due to low numbers of fish. Water quality data from non-rotovated, trail-rotovated, totally rotovated and open water habitats were compared. Conductivity was higher and total P lower at totally rotovated and open water habitats versus non-rotovated and trail-rotovated habitats. Surface total P was significantly lower at the non-rotovated habitat. Plant biomass and taxonomic identification were determined from macrophyte samples. Potamogeton zosteriformis, Myriophyllum spicatum, and Elodea canadenis dominated the plant community. Recommendations for further work are included.