Over the past few decades, anadromous rainbow smelt (Osmerus mordax) in the northeastern United States have experienced range contraction and population decline. In New Hampshire's Great Bay estuary, conservation efforts, such as barrier removal and stock enhancement, have been suggested to improve populations. To optimize these conservation efforts, gaps in current knowledge need to be filled, such as the specifics of habitat use by rainbow smelt, including precise locations, timing, and duration of use. My research aims to address those knowledge gaps through the use of acoustic telemetry, which allows us to monitor the movement patterns of individual adult smelt emigrating from up-river spawning sites back out to the Gulf of Maine.
Movement of Adult Rainbow Smelt in Great Bay Estuary, NH