Conservation Biology (2017)
Scientists increasingly rely on protected areas to assist in biodiversity conservation, yet the efficacy of these areas are rarely systematically assessed, often as a byproduct of underfunding, particularly in developing…
Harbor porpoise, Phocoena phocoena, abundance estimation for California, Oregon, and Washington: II. Aerial surveys
Barlow, Jay; Oliver, Charles W.; Jackson, Terry D.; Taylor, Barbara L.
Fishery Bulletin (1988)
We conducted aerial surveys in September 1984 and September and October 1985 to determine the abundance of harbor porpoise along the coasts of California, Oregon, and Washington. Two observers and…
Harbor porpoise, Phocoena phocoena, abundance estimation for California, Oregon, and Washington: I. Ship surveys
Barlow, J.
Fishery Bulletin (1988)
The density and total population size of harbor porpoise along the coasts of California, Oregon, and Washington are estimated from ship surveys using line transect methods. Surveys were completed between…
Harbor porpoise (Phocoena phocoena) recovery in the inland waters of Washington: Estimates of density and abundance from aerial surveys, 2013–2015
Jefferson, Thomas A.; Smultea, Mari A.; Courbis, Sarah S.; Campbell, Gregory S.
Canadian Journal of Zoology (2016)
The harbor porpoise (Phocoena phocoena (L., 1758)) used to be common in Puget Sound, Washington, but virtually disappeared from these waters by the 1970s. We conducted systematic aerial line-transect surveys…
Habitat preference of the Yangtze finless porpoise in a minimally disturbed environment
Mei, Zhigang; Chen, Mao; Li, Yongtao; Huang, Shiang-Lin; Haung, Jie; Han, Yi; Zhu, Binting; Li, Chunsheng; Wang, Kexiong; Wang, Ding
Ecological Modelling (2017)
Analyses of animal species distribution in a neutral or minimally-interrupted habitat provide a baseline that is essential for assessment of population status, identification of key habitat, and conservation planning for…
COSEWIC assessment and status report on the harbour porpoise (Pacific Ocean population) Phocoena phocoena vomerina in Canada
Hall, A.; Heise, K.
COSEWIC Status Reports (2017)
Wildlife Species Description and Significance The Pacific Harbour Porpoise (Phocoena phocoena vomerina) is the smallest cetacean in British Columbia (BC), ranging from 1.5 to 1.6 m and 45 to 60…
The population of finless porpoise in the Inland Sea of Japan
Kasuya, T.; Kureha, K.
Scientific Reports of the Whales Research Institute (1979)
The observation of 1,194 finless porpoises made through 11,549 km of sighting cruises in the Inland Sea and some ancillary observations provided the following informations. The porpoise migrates annually to…
Abundance and distribution of cetaceans in the Gulf of Alaska
Rone, Brenda K.; Zerbini, Alexandre N.; Douglas, Annie B.; Weller, David W.; Clapham, Phillip J.
Marine Biology (2017)
To effectively protect and manage marine mammals, contemporary information on their abundance and distribution is essential. Several factors influence present-day insight including the accessibility of the study area and the…
Status and conservation of the Yangtze finless porpoise
Wang, Ding; Liu, Renjun; Zhang, Xianfeng; Yang, Jian; Wei, Zhuo; Zhao, Qingzhong; Wang, Xiaoqiang
Biology and Conservation of Freshwater Cetaceans in Asia (2000)
During 1991–1997, five and three surveys were conducted in the middle and lower reaches, respectively, of the Yangtze River. The target species of the surveys included both the baiji (Lipotes…
Abundance and distribution of finless porpoises in the Nanjing-Hukou section of the Lower Yangtze River
Zhou, Kaiya; Yang, Guang; Gao, Anli; Sun, Jiang; Xu, Xinrong
Biology and Conservation of Freshwater Cetaceans in Asia (2000)
Survey results from 1989 to 1992 were interpreted as indicating that about 700 finless porpoises (Neophocaena phocaenoides) inhabited the section of the lower Yangtze River between Nanjing and Hukou. The…