Aquatic Mammals (2018)
The Golden Gate Bridge in San Francisco Bay provides a non-invasive aerial platform where harbor porpoises (Phocoena phocoena) can be observed mating. We photographed 144 mating events over an eight-year…
Behavioral responses of harbor porpoises (Phocoena phocoena) to sonar playback sequences of sweeps and tones (3.5-4.1 kHz)
Kastelein, Ronald A.; Helder-Hoek, Lean; Van de Voorde, Shirley; de Winter, Simone; Janssen, Susan; Ainslie, Michael A.
Aquatic Mammals (2018)
Naval sonar signals may affect the behavior of harbor porpoises (Phocoena phocoena). The 53C sonar system produces 1,600 ms sonar signals in the 3.5 to 4.1 kHz band, each consisting…
Seasonal and diel patterns in cetacean use and foraging at a potential marine renewable energy site
Nuuttila, Hanna K.; Bertelli, Chiara M.; Mendzil, Anouska; Dearle, Nessa
Marine Pollution Bulletin (2018)
Marine renewable energy (MRE) developments often coincide with sites frequented by small cetaceans. To understand habitat use and assess potential impact from development, echolocation clicks were recorded with acoustic click…
Social responses of travelling finless porpoises to boat traffic risk in Misumi West Port, Ariake Sound, Japan
Morimura, Naruki; Mori, Yusuke
PLOS ONE (2019)
Anthropogenic effects have created various risks for wild animals. Boat traffic is one of the most fatal risks for marine mammals. Individual behavioral responses of cetaceans, including diving behavior such…
Time and tide: Seasonal, diel and tidal rhythms in Wadden Sea harbour porpoises (Phocoena phocoena)
Zein, Beate; Woelfing, Benno; Dähne, Michael; Schaffeld, Tobias; Ludwig, Stefan; Rye, Jacob Hansen; Baltzer, Johannes; Ruser, Andreas; Siebert, Ursula
PLOS ONE (2019)
Odontocetes have evolved a rich diversity of prey- and habitat-specific foraging strategies, which allows them to feed opportunistically on locally and temporally abundant prey. While habitat-specific foraging strategies have been…
The impact of marine vessels on the presence and behaviour of harbour porpoise (Phocoena phocoena) in the waters off Berry Head, Brixham (South West England)
Roberts, Laura; Collier, Stuart; Law, Samantha; Gaion, Andrea
Ocean & Coastal Management (2019)
Harbour porpoise (Phocoena phocoena) are protected in the UK by the Wildlife and Countryside Act (1981). Understanding the impact of anthropogenic pressures is fundamental for effective protection under this act…
Quantifying harbour porpoise foraging behaviour in CPOD data: Identification, automatic detection and potential application
Berges, B. J. P.; Geelhoed, S. C. V.; Scheidat, M.; Tougaard, J.
Wageningen Marine Research Reports (2019)
Harbour porpoises (Phocoena phocoena) are regularly monitored to assess how they are impacted by the construction and operation of offshore wind farms. A suitable method to do this is passive…
The frequency of solitary behaviours in captive odontocetes is modulated by environmental and social factors
Serres, Agathe; Hao, Yujiang; Wang, Ding
International Journal of Comparative Psychology (2019)
The number of welfare-oriented studies is increasing in animals under human care, including odontocetes. However, validated welfare indicators are lacking for captive odontocetes. We studied the effect of several conditions…
Porpoises the world over: Diversity in behavior and ecology
Teilmann, Jonas; Sveegaard, Signe
Ethology and Behavioral Ecology of Odontocetes (2019)
Unlike the large number of species of true dolphins, there are only seven porpoise or phocoenid species, inhabiting different habitats and climate zones. They range from ice-covered water in the…
Behavioral responses of harbor porpoises (Phocoena phocoena) to U.S. Navy 53C sonar signals in noise
Kastelein, Ronald A.; Ainslie, Michael A.; van Kester, Ruby
Aquatic Mammals (2019)
Naval sonar systems produce signals that may affect the behavior of harbor porpoises (Phocoena phocoena), and behavioral responses may be influenced by the received signal and by the signal-to-noise ratio…