Portal de Periódicos da CAPES

Die-Offs of Pre-Spawn Adult Pink Salmon and Chum Salmon in Southeastern Alaska

1985; Wiley; Volume: 5; Issue: 2B Linguagem: Inglês

10.1577/1548-8659(1985)5 2.0.co;2

1548-8675

Michael L. Murphy,

Fish Ecology and Management Studies

North American Journal of Fisheries ManagementVolume 5, Issue 2B p. 302-308 Original Article Die-Offs of Pre-Spawn Adult Pink Salmon and Chum Salmon in Southeastern Alaska Michael L. Murphy, Michael L. Murphy Northwest and Alaska Fisheries Center Auke Bay Laboratory, National Marine Fisheries Service, NOAA, P.O. Box 210155, Auke Bay, Alaska, 99821 USASearch for more papers by this author Michael L. Murphy, Michael L. Murphy Northwest and Alaska Fisheries Center Auke Bay Laboratory, National Marine Fisheries Service, NOAA, P.O. Box 210155, Auke Bay, Alaska, 99821 USASearch for more papers by this author First published: April 1985 https://doi.org/10.1577/1548-8659(1985)5 2.0.CO;2Citations: 16AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract About 300 pre-spawn adult pink salmon (Oncorhynchus gorbuscha) and chum salmon (Oncorhynchus keta) died in August 1981 in the intertidal reach of Porcupine Creek, a small stream in an old-growth forest. A combination of low stream flow and neap tides triggered the die-off, and about 1% of the pink salmon and chum salmon spawners died upon returning to Porcupine Creek in 1981. Anoxia, rather than temperature, caused most of the deaths because the maximum stream temperature was 19 C—well below lethal temperatures. Conditions similar to those in 1981 recur in Porcupine Creek about once every 8 years. This type of die-off also appears to be common in other streams in southeastern Alaska and can be predicted from the number of salmon returning, amount of precipitation, and height of the tide. Citing Literature Volume5, Issue2BApril 1985Pages 302-308 RelatedInformation