Seabird Bycatch in Alaska Demersal Longline Fishery Trials: a Demographic Summary
نویسندگان
چکیده
Incidental mortality of seabirds in longline fisheries is a worldwide conservation concern (Tasker et al. 2000). Because most seabirds are long-lived and monogamous, with delayed maturity and low annual reproductive rates, populations are vulnerable to subtle but chronic adult mortality (Melvin & Parrish 2001). Population-level recovery from significant adult mortality tends to be slow (Russell 1999), and the death of a breeding adult can affect reproductive success of the widowed mate in subsequent years, considering the costs involved in finding and successfully mating with another partner (Wooller et al. 1989).
منابع مشابه
Conservation of Arctic Flora and Fauna Incidental Take of Seabirds in Commercial Fisheries in the Arctic Countries: part one List of contributors
Alaska fisheries are traditionally and economically important and, in 1992, fisheries subject to bycatch monitoring were valued at US$1.538 billion. Bycatch is the major seabird mortality factor and a serious conservation concern. Estimated average incidental mortality (1989-93) in selected fisheries was ca 11,200 birds annually. About 88% of the bycatch was in longline fisheries. Northern Fulm...
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