Results 41 to 50 of about 735 (168)

Click communication in wild harbour porpoises (Phocoena phocoena) [PDF]

Scientific Reports, 2018
AbstractSocial 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) clicks with properties that appear poorly suited for communication. Nevertheless, these small odontocetes
P. M. Sørensen, D. M. Wisniewska, F. H. Jensen, M. Johnson, J. Teilmann, P. T. Madsen   +5 more
openaire   +6 more sources

Validation of the F-POD-A fully automated cetacean monitoring system.

PLoS ONE, 2023
The F-POD, an echolocation-click logging device, is commonly used for passive acoustic monitoring of cetaceans. This paper presents the first assessment of the error-rate of fully automated analysis by this system, a description of the F-POD hardware ...
Julia Ivanchikova, Nicholas Tregenza
doaj   +1 more source

Polluted porpoises: Generational transfer of organic contaminants in harbour porpoises from the southern North Sea

Science of The Total Environment, 2021
Persistent organic pollutants (POPs), including polychlorinated biphenyls (PCBs), polybrominated diphenylethers (PBDEs) and hexachlorobenzene (HCB), bioaccumulate in marine ecosystems. Top predators contain high levels of POPs in their lipid-rich tissues, which may result in adverse effects on their reproductive, immune and endocrine functions. Harbour
van den Heuvel-Greve, Martine J., van den Brink, Anneke M., Kotterman, Michiel J.J., Kwadijk, Christiaan J.A.F., Geelhoed, Steve C.V., Murphy, Sinéad, van den Broek, Jan, Heesterbeek, Hans, Gröne, Andrea, IJsseldijk, Lonneke L.   +9 more
openaire   +3 more sources

Using drifting passive echolocation loggers to study harbour porpoises in tidal-stream habitats

Endangered Species Research, 2013
Moored passive acoustic detectors (e.g. C-PODs) are widely used to study harbour porpoise Phocoena phocoena distribution and relative abundance, but their use in tidal-stream habitats is complicated by the need for retrievable flow-resistant seabed ...
B Wilson, S Benjamins, J Elliott
doaj   +1 more source

Year-round spatiotemporal distribution of harbour porpoises within and around the Maryland wind energy area.

PLoS ONE, 2017
Offshore windfarms provide renewable energy, but activities during the construction phase can affect marine mammals. To understand how the construction of an offshore windfarm in the Maryland Wind Energy Area (WEA) off Maryland, USA, might impact harbour
Jessica E Wingfield, Michael O'Brien, Vyacheslav Lyubchich, Jason J Roberts, Patrick N Halpin, Aaron N Rice, Helen Bailey   +6 more
doaj   +1 more source

Fatty Acid Composition in Blubber, Liver, and Muscle of Marine Mammals in the Southern Baltic Sea

Animals, 2020
To date, only limited results on the fatty composition in different tissues of the top predators in the Baltic Sea are available. In the current study, tissue samples of blubber, skeletal muscle, and liver from 8 harbour porpoise (Phocoena phocoena) and ...
Dirk Dannenberger, Ramona Möller, Linda Westphal, Timo Moritz, Michael Dähne, Bianka Grunow   +5 more
doaj   +1 more source

Spatial orientation in echolocating harbour porpoises (Phocoena phocoena) [PDF]

Journal of Experimental Biology, 2005
SUMMARY Studies concerning the echolocation behaviour of odontocetes focus mainly on target detection and discrimination, either in stationary animals or in animals approaching a specific target. We present the first data on the use of echolocation for spatial orientation or navigation.
Verfuss, U.K., Miller, Lee A., Schnitzler, H.-U.   +2 more
openaire   +3 more sources

Counting cases, conserving species: addressing highly pathogenic avian influenza in wildlife

Biological Reviews, EarlyView.
ABSTRACT Highly pathogenic avian influenza (HPAI) has become a critical threat to wildlife, shifting from a seasonal epizootic to a persistent, year‐round panzootic with global consequences. Here, we summarise the origin, evolutionary mechanisms, and expanding host range of the current H5N1 virus (clade 2.3.4.4b) and assess its impact on wildlife. Over
Ulrich Knief, Sandra Bouwhuis, Anja Globig, Anne Günther, Wouter Courtens   +4 more
wiley   +1 more source

Artificial clicks (Porpoise ALert) affect acoustic monitoring of harbour porpoises and their echolocation behaviour

Frontiers in Marine Science
IntroductionIn 2021, a continuous acoustic monitoring programme was initiated in the Baltic Sea of Schleswig-Holstein to determine the occurrence and seasonal distribution of harbour porpoises.
Joseph G. Schnitzler, Louise Moysan, Juan Felipe Escobar-Calderon, Johannes Baltzer, Tobias Schaffeld, Lotte Kindt-Larsen, Ursula Siebert   +6 more
doaj   +1 more source

Half a Century of Per‐ and Polyfluoroalkyl Substances in Northern Gannet Eggs: Impact of Regulations

Journal of Applied Toxicology, EarlyView.
ABSTRACT Per‐ and polyfluoroalkyl substances (PFAS), known as “forever chemicals”, are persistent organic pollutants that have been widely used in the industry across the globe for many decades. Their chemical stability, bioaccumulation, and toxicity pose major environmental and health risks. This study examines temporal trends in the concentrations of
Anaïs Fournier, Anaïs Kerric, Raphaël A. Lavoie   +2 more
wiley   +1 more source