Report of the International Whaling Commission (1996)
The reported decline of the harbour porpoise in the coastal areas of the North Sea after 1940, has also been seen in Dutch waters. Information on the distribution and abundance…
Effects of Beaufort sea state on the sightability of harbor porpoises in the Gulf of Maine
Palka, D.
Report of the International Whaling Commission (1996)
Effects of Beaufort sea state heterogeneities on density estimates of harbor porpoises from data collected during 'independent' team line transect sighting surveys are investigated. The surveys were conducted in the…
Summary of current knowledge of harbour porpoises in US and Canadian Atlantic waters
Palka, D. L.; Read, A. J.; Westgate, A. J.; Johnston, D. W.
Report of the International Whaling Commission (1996)
This paper summarises current knowledge of the three populations of harbour porpoises in US and Canadian Atlantic waters. During the summer, the populations are centred in the Gulf of Maine/Bay…
Investigations on cetacean sonar XI: Intrinsic comparison of the wave shapes of some members of the Phocoenidae family
Kamminga, C.; Cohen Stuart, A.; Silber, G. K.
Aquatic Mammals (1996)
A comparison of the acoustic waveforms of three different species, Phocoena phocoena, Phocoena sinus and Neophocaena phocaenoides of the sub-family Phocoeninae is made with the species Phocoenoides dalli of the…
Violent interactions between bottlenose dolphins and harbour porpoises
Ross, H. M.; Wilson, B.
Proceedings of the Royal Society B: Biological Sciences (1996)
The majority (63%) of harbour porpoises stranded around the Moray Firth, Scotland, died from trauma characterized by multiple skeletal fractures and damaged internal organs. Surface injuries consisted of skin cuts…
Estimates of harbour porpoise bycatch in the Gulf of Maine sink gillnet fishery, 1990-1993
Bravington, M. V.; Bisack, K. D.
Report of the International Whaling Commission (1996)
Our estimates of total harbour porpoise bycatch in the Gulf of Maine sink gillnet fishery for 1990 to 1993, with 95% confidence intervals in brackets, are 2,900 [1,500-5 ,500], 2,000…
Harbour porpoise (Phocoena phocoena L.) by-catch in set gillnets in the Celtic Sea
Tregenza, N.J.C.; Berrow, S. D.; Hammond, P. S.; Leaper, R.
ICES Journal of Marine Science (1997)
A programme to assess the cetacean by-catch in the Irish and UK set gillnet fisheries in the Celtic Sea was conducted from August 1992 to March 1994 using volunteer observers.…
Harbor porpoise bycatch estimates in the US New England multispecies sink gillnet fishery: 1994 and 1995
Bisack, K. D.
Report of the International Whaling Commission (1997)
This report provides harbor porpoise bycatch estimates for 1994 and 1995. The analysis required adjusting for changes in data collection methods that went into effect in June 1994, in which…
Blubber thickness in harbour porpoises (Phocoena phocoena)
Kastelein, R. A.; van der Sijs, S. J.; Staal, C.; Nieuwstraten, S. H.
The Biology of the Harbour Porpoise (1997)
The blubber thicknesses of 5 male and one female harbour porpoises were measured ultrasonically in 9 positions on the body over various periods of time. Most animals were immature and…
Population structure of harbour porpoises Phocoena phocoena in the seas around the UK and adjacent waters
Walton, M. J.
Proceedings of the Royal Society B: Biological Sciences (1997)
The population structure of harbour porpoises from British and adjacent waters was studied by examining variability in a 200 bp (base pair) section of the control region of mitochondrial DNA…