(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…
Saving the Yangtze finless porpoise: Time is rapidly running out
Huang, Shiang-Lin; Mei, Zhigang; Hao, Yujiang; Zheng, Jinsong; Wang, Kexiong; Wang, Ding
Biological Conservation (2016)
The Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is the world's only freshwater porpoise and is endemic to the Yangtze River. However, it is now Critically Endangered, with its long-term survival…
Abundance and conservation status of the Yangtze finless porpoise in the Yangtze River, China
Zhao, Xiujiang; Barlow, Jay; Taylor, Barbara L.; Pitman, Robert L.; Wang, Kexiong; Wei, Zhuo; Stewart, Brent S.; Turvey, Samuel T.; Akamatsu, Tomonari; Reeves, Randall R.; Wang, Ding
Biological Conservation (2008)
The Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis) is endemic to the middle and lower reaches of the Yangtze River, China. It is the only freshwater population of porpoises in the…
Report on vaquita rate of change between 2011-2014 using passive acoustic data by the expert panel on spatial models
Jaramillo-Legorreta, Armando; Rojas-Bracho, Lorenzo; VerHoef, Jay; Moore, Jeff; Thomas, Len; Barlow, Jay; Gerrodette, Tim; Taylor, Barbara
Scientific Committee Meeting Documents (2015)
The Expert Panel on Vaquita Acoustic Monitoring had its second meeting on April 28, 2015 to analyze the first four seasons (2011-2014) of the acoustic monitoring program. Results indicate an…
A decline in the abundance of harbor porpoise, Phocoena phocoena, in nearshore waters off California, 1986-93
Forney, K. A.
Fishery Bulletin (1995)
(...) Harbor porpoise, Phocoena phocoena, have been caught incidentally in set gill nets off the central California coast since at least 1958 (Norris and Prescott, 1961). The annual mortality of…
Trends in harbour porpoise abundance off central California, 1986-95: Evidence for interannual changes in distribution?
Forney, K. A.
Journal of Cetacean Research and Management (1999)
This paper presents an updated analysis of trends in the abundance of harbour porpoise, Phocoena phocoena, in central and northern California, for the period 1986-95. The most recent survey effort…
COSEWIC assessment and update status report on the harbour porpoise Phocoena phocoena (Pacific Ocean population) in Canada
Baird, Robin W.
COSEWIC Status Reports (2003)
Species Information The harbour porpoise is one of the smallest cetacean species, born at 80-90 cm and only occasionally reaching lengths of close to 2 m. In general, harbour porpoises…
Trends in abundance of Dall’s porpoise in the western north Pacific, 1979 to 1989
Turnock, B.J.; Buckland, S.T.
Report of the International Whaling Commission (1995)
Two density indices of Dall's porpoise abundance were estimated for the western North Pacific from 1979 to 1989. One index is the density of animals (number of animals per square…
An assessment of the status of the harbour porpoise in central California
Barlow, J.; Hanan, D.
Report of the International Whaling Commission (1995)
Harbour porpoise (Phocoena phocoena) in California are subject to incidental mortality in gillnet fisheries. The status of this population is uncertain. We review information on population structure and conclude that…
Densities and seasonal distribution of harbour porpoises (Phocoena phocoena) in the Swedish Skagerrak, Kattegat and Baltic seas
Berggren, P.; Arrhenius, F.
Report of the International Whaling Commission (1995)
Strip transect aerial surveys were conducted in the Skagerrak and Kattegat Seas for 8 days in June-August, and 2 days in October 1991. Nine sightings of harbour porpoises were recorded…