... as for evaluating fitness consequences of anthropogenic disturbances. Yet, standard methods for measuring FMR are difficult to use on free-ranging cetaceans whose FMR may deviate substantially from scaling predictions using terrestrial mammals. Harbour porpoises ( Phocoena phocoena ) are among the smallest marine...

... hydrophones on the sound-producing nasal complexes of three echolocating porpoises ( Phocoena phocoena ) with symmetrical pairs of phonic lips. Using time of arrival differences on three hydrophones, we show that all recorded clicks from these three porpoises are produced by the right pair of phonic lips...

...., Rasmussen, M. H., Wahlberg, M., Petersen, H. C. and Miller, L. A. ( 2009 ). Changes in click source levels with distance to targets: Studies of free-ranging white-beaked dolphins( Lagenorhynchus albirostris ) and captive harbor porpoises( Phocoena phocoena ). Bioacoustics 19 (in press). Au, W. W. L...