The JIP has funded independent research into the potential for long-term passive acoustic monitoring (PAM) to be used to track changes in the populations of vocalizing marine mammals in a particular location. Through this and other research efforts: • All the critical components needed for using passive acoustic monitoring to track changes in animal numbers have been developed and tested. • Hydrophones arrays can detect a wide range of vocalizing marine mammal species and be linked to automatic systems for identifying species and estimating numbers. • Research completed in 2017 developed a tool that brought all the elements of a long-term monitoring system together.
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