Listening at climate change in ice-covered seas: Example with AURAL autonomous hydrophones in the Arctic

Gathering continuous long-term data series in ice covered seas for the higher trophic levels of the regional food webs is challenging. New passive acoustic monitoring technologies can now be used to track marine mammal occupation of these habitats, their migration timing, frequentation periods, and hot spots of intensive utilization. The present paper describes such an approach used by the Arctic Net research initiative in Canadian North.