Blar i NTNU Open på forfatter "Hildebrand, John A"
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Update on frequency decline of Northeast Pacific blue whale (Balaenoptera musculus) calls
Rice, Ally; Sirovic, Ana; Hildebrand, John A; Wood, Megan; Carbaugh-Rutland, Alexander; Baumann-Pickering, Simone (Peer reviewed; Journal article, 2022)Worldwide, the frequency (pitch) of blue whale (Balaenoptera musculus) calls has been decreasing since first recorded in the 1960s. This frequency decline occurs over annual and inter-annual timescales and has recently ...