Sound (sonar or acoustic)

Tracking Fish with Acoustic Telemetry

Submitted by Anonymous (not verified) on Mon, 07/30/2018 - 14:12

USGS scientists at the Great Lakes Science Center in Michigan are using acoustic telemetry to describe the movements of fish in the St. Clair-Detroit River system on the border between Michigan and Ontario, Canada. This research will be used to support Great Lakes fishery managers in restoring native species, such as lake sturgeon, and controlling exotic species, such as sea lamprey.

Combining Technologies to Understand Great Lakes Lakescape Ecology

Submitted by Anonymous (not verified) on Mon, 07/30/2018 - 14:12

The five Laurentian Great Lakes of Superior, Michigan, Huron, Erie and Ontario provide a variety of services to the millions of people that live in the basin. Yet the sheer size of the lakes challenges lake managers’ understanding of how these ecosystems function. USGS scientists at the Great Lakes Science Center in Michigan are combining multiple remote sensing technologies to  better understand these vast resources.

Backwater Mapping for Invasive Species in the Upper Mississippi River System (UMRS)

Submitted by Anonymous (not verified) on Mon, 07/30/2018 - 14:12

A team of scientists from the USGS Upper Midwest Environmental Science Center in La Crosse, Wisconsin, is studying ways to control and deplete aquatic invasive species in the Upper Mississippi River System (UMRS).  One study site included a select backwater on the Marseilles Pool in the Illinois River.  Split-beam hydroacoustic (stationary and mobile, 200-kHz transducers), side-scan sonar imagery, and bathymetry data were collected and integrated to evaluate fish abundance and distributions in specific areas before, during, and after integrated pest management tools were applied to deplete