Abstract

Using GIS/GPS to Eradicate Northern Pike from Lake Davis, CA
Track: Forestry, Wildlife, and Fisheries Management
Author(s): Ken DeVore, Will Patterson

Northern pike (Esox lucius) are a nonnative invasive fish species that threaten California's aquatic resources. They have adversely affected the local trout fishery and local economy. If they escape or are moved from Lake Davis to other areas of the State or region, they could endanger fish in other streams, rivers, lakes, and reservoirs where they become established. Using GIS and GPS we tracked where the Rotenone (used to stun and kill fish) is applied in the 44 square mile project boundary. We divided the project area into a 1/4 mile grid using ArcInfo. Treatment teams attached Garmin GPS units to backpack sprayers and boats during eradication process. Next we downloaded and processed GPS data with MapSource and DNR Garmin each evening and analyized the shapefiles using ArcView and ArcGIS. Using GIS and GPS we successfully identified treated/untreated areas. GIS/GPS are great tools to map, identify, and track fish eradication. They were the main tools for decision makers during the Pike eradication.

Ken DeVore
CA Depart Fish & Game
4949 Viewridge Rd
San Diego , California 92123
United States
Phone: (858) 467-4238
E-mail: kdevore@dfg.ca.gov

Will Patterson
CA Department of Fish & Game
1807 13th Street
Suite 202
Sacramento , California 95811
United States
Phone: 916 323 -1484
E-mail: wpatters@dfg.ca.gov