Marine Science and Technology Bulletin (2023)
This study was conducted out in the southern Black Sea coastal zone, in 2011-2016 fishing seasons. In the study, bycatch of sturgeons and cetaceans were examined both in small scale…
Making nets more acoustically visible: Floats as passive mitigation measures to reduce bycatch of harbour porpoise (Phocoena phocoena) in gillnets
Rosshagen, F.
(2023)
Incidental capture in fishing gear is today affecting at least 112 marine mammal species worldwide and for many smaller toothed whale species (Odontocete), gillnets are considered to be the largest…
Implications of porpoise echolocation and dive behaviour on passive acoustic monitoring
Macaulay, Jamie Donald John; Rojano-Doñate, Laia; Ladegaard, Michael; Tougaard, Jakob; Teilmann, Jonas; Marques, Tiago A.; Siebert, Ursula; Madsen, Peter Teglberg
The Journal of the Acoustical Society of America (2023)
Harbour porpoises are visually inconspicuous but highly soniferous echolocating marine predators that are regularly studied using passive acoustic monitoring (PAM). PAM can provide quality data on animal abundance, human impact,…
Wild harbour porpoises startle and flee at low received levels from acoustic harassment device
Elmegaard, Siri L.; Teilmann, Jonas; Rojano-Doñate, Laia; Brennecke, Dennis; Mikkelsen, Lonnie; Balle, Jeppe D.; Gosewinkel, Ulrich; Kyhn, Line A.; Tønnesen, Pernille; Wahlberg, Magnus; Ruser, Andreas; Siebert, Ursula; Madsen, Peter Teglberg
Scientific Reports (2023)
Acoustic Harassment Devices (AHD) are widely used to deter marine mammals from aquaculture depredation, and from pile driving operations that may otherwise cause hearing damage. However, little is known about…
Distribution and speed of recreational boats in Danish waters based on coastal observations and satellite images: Predicting where boats may affect harbour porpoises
Hao, Xiuqing; Nabe-Nielsen, Jacob
Ocean & Coastal Management (2023)
Danish coastal waters are a hotspot for recreational boating and harbour porpoises (Phocoena phocoena), but as there is little data on the boats’ speeds and distributions, it is difficult to…
Arkona offshore wind farm. Passive acoustic monitoring – Field work report.
Sveegaard, S.
(2023)
In July 2022, Aarhus University was contracted by SWECO AB to conduct a one-year baseline study and impact assessment of harbour porpoises as well as noise monitoring within the pre-investigation…
Visual deprivation induces a stronger dive response in a harbor porpoise
Bakkeren, C.; Ladegaard, M.; Hansen, K. A.; Wahlberg, M.; Madsen, P. T.; Rojano-Doñate, L.
iScience (2023)
The dive response allows marine mammals to perform prolonged breath-hold dives to access rich marine prey resources. Via dynamic adjustments of peripheral vasoconstriction and bradycardia, oxygen consumption can be tailored…
Acoustic ecology of harbour porpoise (Phocoena phocoena) between two U.S. offshore wind energy areas
Holdman, A. K.; Tregenza, N.; Van Parijs, S. M.; DeAngelis, A. I.
ICES Journal of Marine Science (2023)
Offshore wind energy is set to develop rapidly in waters off the east coast of the United States. There is considerable overlap between areas proposed for offshore wind development and…
Characterising underwater noise and changes in harbour porpoise behaviour during the decommissioning of an oil and gas platform
Fernandez-Betelu, Oihane; Graham, Isla M.; Malcher, Freya; Webster, Emily; Cheong, Sei-Him; Wang, Lian; Iorio-Merlo, Virginia; Robinson, Stephen; Thompson, Paul M.
Marine Pollution Bulletin (2024)
Many man-made marine structures (MMS) will have to be decommissioned in the coming decades. While studies on the impacts of construction of MMS on marine mammals exist, no research has…
Distribution, abundance, and density of harbor porpoises in Hood Canal, Washington
Rone, Brenda K.; Zerbini, Alexandre N.; Falcone, Erin A.; Keene, Erin L.; Schorr, Gregory S.
The Journal of Wildlife Management (2024)
Harbor porpoises (Phocoena phocoena) are the only cetaceans routinely sighted in Hood Canal, a narrow fjord that comprises the western edge of Puget Sound, Washington, USA. Harbor porpoises are sensitive…