New stereo acoustic data logger for free-ranging dolphins and porpoises

Akamatsu, Tomonari; Matsuda, Akihiko; Suzuki, Shiro; Wang, Ding; Wang, Kexiong; Suzuki, Michihiko; Muramoto, Hiroyuki; Sugiyama, Naoki; Oota, Katsunori
Marine Technology Society Journal (2005)

To observe the bio-sonar behavior of dolphins and porpoises, a miniature stereo acoustic data logger was developed to record the echolocation clicks of small cetaceans. The 'A-tag' device is small…


Quantitative measures of anthropogenic noise on harbor porpoises: Testing the reliability of acoustic tag recordings

Wisniewska, Danuta M.; Teilmann, Jonas; Hermannsen, Line; Johnson, Mark; Miller, Lee A.; Siebert, Ursula; Madsen, Peter Teglberg
The Effects of Noise on Aquatic Life II (2016)

In recent years, several sound and movement recording tags have been developed to sample the acoustic field experienced by cetaceans and their reactions to it. However, little is known about…


Harbour porpoises (Phocoena phocoena): Investigation of density, distribution patterns, habitat use and acoustics in the German North and Baltic Seas

Siebert, Ursula; Benke, Harald; Dehnhardt, Guido; Gilles, Anita; Hanke, Wolf; Honnef, Christopher G; Lucke, Klaus; Ludwig, Stefan; Scheidat, Meike; Verfuß, Ursula K
Offshore Wind Energy (2005)

The harbour, or common, porpoise (Phocoena phocoena) is the smallest cetacean inhabiting temperate to cold waters throughout the northern hemisphere. Due to its occurrence mainly but not exclusively in coastal…


A visual and acoustic survey for harbour porpoises off North-West Africa: Further evidence of a discrete population

Boisseau, O.; Matthews, J.; Gillespie, D.; Lacey, C.; Moscrop, A.; El Ouamari, N.
African Journal of Marine Science (2007)

The distribution of harbour porpoises Phocoena phocoena in southern Europe and along the Atlantic African coast is poorly understood, with tentative assessments suggesting a discrete West African population with a…


Echolocation detections and digital video surveys provide reliable estimates of the relative density of harbour porpoises

Williamson, Laura D.; Brookes, Kate L.; Scott, Beth E.; Graham, Isla M.; Bradbury, Gareth; Hammond, Philip S.; Thompson, Paul M.
Methods in Ecology and Evolution (2016)

1. Robust estimates of the density or abundance of cetaceans are required to support a wide range of ecological studies and inform management decisions. Considerable effort has been put into…


Relative abundance of harbour porpoises (Phocoena phocoena) from acoustic and visual surveys of the Baltic Sea and adjacent waters during 2001 and 2002

Gillespie, D.; Berggren, P.; Brown, S.; Kuklik, I.; Lacey, C.; Lewis, T.; Matthews, J.; McLanaghan, R.; Moscrop, A.; Tregenza, N.
Journal of Cetacean Research and Management (2005)

Boat-based acoustic and visual surveys for harbour porpoises (Phocoena phocoena) were conducted during the summers of 2001 and 2002 in order to investigate their distribution and relative abundance in the…