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Using GPS to Study Fish


In New York state scientists are implanting GPS systems into fish to track their movements. Several species of fish are being tracked including sturgeons.

The state’s Hudson River Estuary research program is one of dozens across the nation in which environmentalists and scientists are using RFID tags, sonic transmitters, antennae, GPS, video, phones and other technology to study underwater ecosystems.

In the Hudson, scientists are studying sturgeon’s movements by going out on the river in search of sonic signals. They use mobile monitoring units and stationary arrays to pick up signals from the implanted fish and plot their movements with GPS. The native species are monitored until they leave the estuary for the Atlantic, or the batteries in the sturgeons’ tags run out (537 days).

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