A combined visual and acoustic estimate of 2008 abundance, and change in abundance since 1997, for the vaquita, Phocoena sinus

Gerrodette, Tim; Taylor, Barbara L.; Swift, René; Rankin, Shannon; Jaramillo-Legorreta, Armando M.; Rojas-Bracho, Lorenzo
Marine Mammal Science (2010)

A line-transect survey for the critically endangered vaquita, Phocoena sinus, was carried out in October–November 2008, in the northern Gulf of California, Mexico. Areas with deeper water were sampled visually…

Passive acoustic monitoring of bottlenose dolphin and harbour porpoise, in Cardigan Bay, Wales, with implications for habitat use and partitioning

Simon, Malene; Nuuttila, Hanna; Reyes-Zamudio, Mercedes M.; Ugarte, Fernando; Verfub, Ursula; Evans, Peter G.H.
Journal of the Marine Biological Association of the United Kingdom (2010)

Knowledge about harbour porpoise and bottlenose dolphin occurrence in Cardigan Bay Special Area of Conservation (SAC), Wales, is limited to daylight hours during summer, when conditions are suitable for traditional…

From echolocation clicks to animal density—Acoustic sampling of harbor porpoises with static dataloggers

Kyhn, Line A.; Tougaard, Jakob; Thomas, Len; Duve, Linda Rosager; Stenback, Joanna; Amundin, Mats; Desportes, Geneviève; Teilmann, Jonas
The Journal of the Acoustical Society of America (2012)

Monitoring abundance and population trends of small odontocetes is notoriously difficult and labor intensive. There is a need to develop alternative methods to the traditional visual line transect surveys, especially…