{"refrec":{"BRefID":248355,"RR":"<b>Dahlheim, M.; York, A.; Towell, R.; Waite, J.; Breiwick, J.</b> (2000). Harbor porpoise (<i>Phocoena phocoena</i>) abundance in Alaska: Bristol Bay to southeast Alaska, 1991-1993. <i>Mar. Mamm. Sci. 16(1)</i>: 28-45. <a href=\"http://dx.doi.org/10.1111/j.1748-7692.2000.tb00902.x\" target=\"_blank\">http://dx.doi.org/10.1111/j.1748-7692.2000.tb00902.x</a>","BEntID":240060,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Mar. Mamm. Sci. 16(1)</i>: 28-45. <a href=\"http://dx.doi.org/10.1111/j.1748-7692.2000.tb00902.x\" target=\"_blank\">http://dx.doi.org/10.1111/j.1748-7692.2000.tb00902.x</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Dahlheim, M.; York, A.; Towell, R.; Waite, J.; Breiwick, J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Dahlheim, M. <i>et al.</i>","Englishabstract":"Between 1991 and 1993, Alaska harbor porpoise (<i>Phocoena phocoena</i>) abundance was investigated during aerial surveys throughout much of the coastal and offshore waters from Bristol Bay in the eastern Bering Sea to Dixon Entrance in Southeast Alaska. Line-transect methodology was used, and only those observations made during optimal conditions were analyzed. Survey data indicated densities of 4.48 groups/100 km<sup>2</sup>, or approximately 3,531 harbor porpoises (95% C. I. 2,206-5,651) in Bristol Bay and 0.54 groups/100 km<sup>2</sup>, or 136 harbor porpoises (95% C. I. 11-1,645) for Cook Inlet. Efforts off Kodiak Island resulted in densities of 1.85 groups/100 km<sup>2</sup>, or an abundance estimate of 740 (95% C. I. 259-2,115). Surveys off the south side of the Alaska Peninsula found densities of 2.03 groups/100 km<sup>2</sup> and an abundance estimate of 551 (95% C. I. 423-719). Surveys of offshore waters from Prince William Sound to Dixon Entrance yielded densities of 4.02 groups/100 km<sup>2</sup> and an abundance estimate of 3,982 (95% C. I. 2,567-6,177). Combining all years and areas yielded an uncorrected density estimate of 3.82 porpoises per 100 km<sup>2</sup>, resulting in an abundance estimate of 8,940 porpoises (CV = 13.8%) with a 95% confidence interval of 6,746-11,848. Using correction factors from other studies to adjust for animals missed by observers, the total number of Alaska harbor porpoises is probably three times this number.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Harbor porpoise (<i>Phocoena phocoena</i>) abundance in Alaska: Bristol Bay to southeast Alaska, 1991-1993","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-18 01:31:41.705573","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"    harbor porpoise;Phocoena phocoena;abundance;Alaska","OtherDescriptors":null,"Notes":null,"AnaPub":2000,"MonPub":null,"DateUpdate":"2015-07-02","DateCreate":"2015-07-02","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000084812700002","VABBcode":null,"OpenAcc":0,"DOI":"10.1111/j.1748-7692.2000.tb00902.x"},"refs":null,"anarec":{"AnaID":248355,"PubliDate":2000,"Pagination":"28-45","XtraPublOfAnaID":null,"ISBN":null,"Volume":"16","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43515,"SerRR":"Marine Mammal Science. 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