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…
Raising your voice: Evolution of narrow-band high-frequency signals in toothed whales (Odontoceti)
Galatius, Anders; Olsen, Morten Tange; Steeman, Mette Elstrup; Racicot, Rachel A.; Bradshaw, Catherine D; Kyhn, Line A.; Miller, Lee A.
Biological Journal of the Linnean Society (2018)
Cetaceans use sound for communication, navigation and finding prey. Most extant odontocetes produce broadband (BB) biosonar clicks covering frequency ranges from tens of kilohertz to 150–170 kHz. In contrast, the…
High rates of vessel noise disrupt foraging in wild harbour porpoises (Phocoena phocoena)
Wisniewska, Danuta Maria; Johnson, Mark; Teilmann, Jonas; Siebert, Ursula; Galatius, Anders; Dietz, Rune; Madsen, Peter Teglberg
Proceedings of the Royal Society B: Biological Sciences (2018)
Shipping is the dominant marine anthropogenic noise source in the world's oceans, yet we know little about vessel encounter rates, exposure levels and behavioural reactions for cetaceans in the wild,…
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…
Noise affects porpoise click detections – the magnitude of the effect depends on logger type and detection filter settings
Clausen, Karin Tubbert; Tougaard, Jakob; Carstensen, Jacob; Delefosse, Matthieu; Teilmann, Jonas
Bioacoustics (2018)
Automatic click detectors and full-bandwidth sound recorders are widely used in passive acoustic monitoring of small cetaceans. Detection of these signals depends on a variety of factors, including signal to…
Click communication in wild harbour porpoises (Phocoena phocoena)
Sørensen, P. M.; Wisniewska, D. M.; Jensen, F. H.; Johnson, M.; Teilmann, J.; Madsen, P. T.
Scientific Reports (2018)
Social delphinids employ a vocal repertoire of clicks for echolocation and whistles for communication. Conversely, the less social and acoustically cryptic harbour porpoises (Phocoena phocoena) only produce narrow-band high-frequency (NBHF)…
The sex life of harbor porpoises (Phocoena phocoena): Lateralized and aerial behavior
Keener, William; Webber, Marc A.; Szczepaniak, Isidore D.; Markowitz, Tim M.; Orbach, Dara N.
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…
Predicting harbour porpoise (Phocoena phocoena) activity in the Eastern Scheldt
Gansen, C.; Hoeneveld, J.-L.; Poot, J.
(2018)
The harbour porpoise (Phocoena phocoena) is a small ceteacean species and is common in Dutch coastal waters. The Eastern Scheldt, an estuary in the Dutch province of Zeeland, housed a…
Spatial and temporal baseline information on marine megafauna-data facilitated by a wildlife tour operator
de Boer, Marijke Nita; Jones, Duncan; Jones, Hannah; Knee, Rebecca
Open Journal of Marine Science (2018)
The protection of marine megafauna within Europe is rather fragmented. Developing conservation measures for highly mobile species presents definite challenges, particularly due to the many knowledge gaps. Recent studies have…
Prey of killer whales (Orcinus orca) in Iceland
Samarra, Filipa I. P.; Bassoi, Manuela; Béesau, Julie; Elíasdóttir, Margrét Ó.; Gunnarsson, Karl; Mrusczok, Marie-Thérèse; Rasmussen, Marianne; Rempel, Jonathan N.; Thorvaldsson, Baldur; Víkingsson, Gísli A.
PLOS ONE (2018)
Killer whales have a cosmopolitan distribution and as a species are generalists, feeding on a variety of prey. However, local populations tend to specialise on specific prey types. In Icelandic…