How Many Endangered Shortnose Sturgeon are in the Hudson River?

by NEW YORK DIGITAL NEWS



How Many Endangered Shortnose Sturgeon are in the Hudson River?

Research scientists are collaborating on a large-scale project to provide an updated estimate for Hudson River’s shortnose sturgeon population, a federally endangered species, using acoustic telemetry and side-scan sonar. Acoustic telemetry uses stationary receivers to detect signals emitted from tagged marine species such as sturgeon.

The receivers store the unique tag number and the date and time that a fish swims past a receiver (like e-z pass for sturgeon). The side-scan sonar uses sound waves to create an image of the river bottom and objects in the water column, such as fish.

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