Effects of offshore pile driving on harbour porpoise abundance in the German Bight

Brandt, Miriam J.; Dragon, Anne-Cécile; Diederichs, Ansgar; Schubert, Alexander; Kosarev, Vladislav; Nehls, Georg; Wahl, Veronika; Michalik, Andreas; Braasch, Alexander; Hinz, Claus; Ketzer, Christian; Todeskino, Dieter; Gauger, Marco; Laczny, Martin; Pipe, Werner
Report for Offshore Forum Windenergie (2016)

This study analyses the effects of the construction of eight offshore wind farms within the German North Sea between 2009 and 2013 on harbour porpoises (Phocoena phocoena). It combines porpoise…


Harbour porpoises in the Aegean Sea, eastern Mediterranean: The species’ presence is confirmed

Cucknell, A.-C.; Frantzis, A.; Boisseau, O.; Romagosa, M.; Ryan, C.; Tonay, A. M.; Alexiadou, P.; Öztürk, A. A.; Moscrop, A.
Marine Biodiversity Records (2016)

Results are presented from the first systematic visual and acoustic line-transect survey for harbour porpoises in the Thracian Sea, northern Aegean Sea. During the vessel survey, undertaken in summer 2013,…


Comparing distribution of harbour porpoises (Phocoena phocoena) derived from satellite telemetry and passive acoustic monitoring

Mikkelsen, Lonnie; Rigét, Frank F.; Kyhn, Line A.; Sveegaard, Signe; Dietz, Rune; Tougaard, Jakob; Carlström, Julia A. K.; Carlén, Ida; Koblitz, Jens C.; Teilmann, Jonas
PLOS ONE (2016)

Cetacean monitoring is essential in determining the status of a population. Different monitoring methods should reflect the real trends in abundance and patterns in distribution, and results should therefore ideally…


Changes in click source levels with distance to targets: Studies of free-ranging white-beaked dolphins Lagenorhynchus albirostris and captive harbour porpoises Phocoena phocoena

Atem, Ana Carolina G.; Rasmussen, Marianne H.; Wahlberg, Magnus; Petersen, Hans C.; Miller, Lee A.;
Bioacoustics (2009)

Probably all odontocetes use echolocation for spatial orientation and detection of prey. We used a four hydrophone “Y” array to record the high frequency clicks from free-ranging White-beaked Dolphins Lagenorhynchus…


Passive acoustic monitoring of the decline of Mexico’s critically endangered vaquita

Jaramillo-Legorreta, Armando; Cardenas-Hinojosa, Gustavo; Nieto-Garcia, Edwyna; Rojas-Bracho, Lorenzo; Ver Hoef, Jay; Moore, Jeffrey; Tregenza, Nicholas; Barlow, Jay; Gerrodette, Tim; Thomas, Len; Taylor, Barbara
Conservation Biology (2016)

The vaquita (Phocoena sinus) is the world's most endangered marine mammal with ≈245 individuals remaining in 2008. This species of porpoise is endemic to the northern Gulf of California, Mexico,…


Distribution and abundance of finless porpoises in Hong Kong and adjacent waters of China

Jefferson, T. A.; Hung, S. K.; Law, L.; Torey, M.; Tregenza, N.
The Raffles Bulletin of Zoology (2002)

We studied the distribution and abundance of finless porpoises (Neophocaena phocaenoides) in Hong Kong and adjacent waters of China's Guangdong Province between September 1995 and November 2000. Vessel (50,194 km)…


Diel and seasonal patterns in acoustic presence and foraging behaviour of free-ranging harbour porpoises

Schaffeld, T.; Bräger, S.; Gallus, A.; Dähne, M.; Krügel, K.; Herrmann, A.; Jabbusch, M.; Ruf, T.; Verfuß, U. K.; Benke, H.; Koblitz, J. C.
Marine Ecology Progress Series (2016)

A temporal and geographical analysis of echolocation activity can give insights into the behaviour of free-ranging harbour porpoises Phocoena phocoena. Seasonal and diel patterns in the presence and foraging activity…