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)…
Acoustic signals from free-ranging finless porpoises (Neophocaena phocaenoides) in the waters around Hong Kong
Goold, J. C.; Jefferson, T. A.
The Raffles Bulletin of Zoology (2002)
Acoustic signals from free-ranging finless porpoises were recorded in the waters around Hong Kong during March 2000. Finless porpoises produced short-duration high-frequency clicks. Signal analysis showed finless porpoise clicks to…
Seventh Meeting of the Comité Internacional para la Recuperación de la Vaquita
CIRVA
(2016)
EXTINCTION IS IMMINENT CIRVA reviewed the 2015 population survey results, which showed that only about 60 vaquitas remained at the beginning of the emergency 2-year partial gillnet ban. CIRVA also…
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…
Echolocation behavior of harbor porpoises Phocoena phocoena around chemically enhanced gill nets
Cox, T. M.; Read, A. J.
Marine Ecology Progress Series (2004)
The echolocation behavior of harbor porpoises Phocoena phocoena around gillnets was monitored to test their response to chemically (BaSO4) enhanced gill nets, designed to be more acoustically reflective than commercial…
Riding the tide: Use of a moving tidal-stream habitat by harbour porpoises
Benjamins, S.; Dale, A.; van Geel, N.; Wilson, B.
Marine Ecology Progress Series (2016)
Tidal-stream habitats present periodically fast-flowing, turbulent conditions. Evidence suggests that these conditions benefit top predators such as harbour porpoises Phocoena phocoena, presumably allowing them to optimise exploitation of prey resources.…
Harbour porpoises (Phocoena phocoena) and wind farms: a case study in the Dutch North Sea
Scheidat, Meike; Tougaard, Jakob; Brasseur, Sophie; Carstensen, Jacob; van Polanen Petel, Tamara; Teilmann, Jonas; Reijnders, Peter
Environmental Research Letters (2011)
The rapid increase in development of offshore wind energy in European waters has raised concern for the possible environmental impacts of wind farms. We studied whether harbour porpoise occurrence has…
Variation in harbour porpoise activity in response to seismic survey noise
Pirotta, E.; Brookes, K. L.; Graham, I. M.; Thompson, P. M.
Biology Letters (2014)
Animals exposed to anthropogenic disturbance make trade-offs between perceived risk and the cost of leaving disturbed areas. Impact assessments tend to focus on overt behavioural responses leading to displacement, but…
Habitat preferences and distribution of the harbour porpoise Phocoena phocoena west of Scotland
Booth, C. G.; Embling, C.; Gordon, J.; Calderan, S. V.; Hammond, P. S.
Marine Ecology Progress Series (2013)
The west coast of Scotland is comprised of complex coastlines and topography, and a range of physical processes influence its coastal marine environment. The region is host to one of…