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Titolo:
Assessing the northern diversion of sockeye salmon returning to the FraserRiver, BC
Autore:
McKinnell, S; Freeland, HJ; Groulx, SD;
Indirizzi:
Fisheries & Oceans Canada, Pacific Biol Stn, Nanaimo, BC V9R 5K6, Canada Fisheries & Oceans Canada Nanaimo BC Canada V9R 5K6 o, BC V9R 5K6, Canada Inst Ocean Sci, Sidney, BC V8L 4B2, Canada Inst Ocean Sci Sidney BC Canada V8L 4B2 n Sci, Sidney, BC V8L 4B2, Canada Univ Victoria, Victoria, BC V8W 2Y2, Canada Univ Victoria Victoria BC Canada V8W 2Y2 ia, Victoria, BC V8W 2Y2, Canada
Titolo Testata:
FISHERIES OCEANOGRAPHY
fascicolo: 2, volume: 8, anno: 1999,
pagine: 104 - 114
SICI:
1054-6006(199906)8:2<104:ATNDOS>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
ONCORHYNCHUS-NERKA; BRITISH-COLUMBIA; PACIFIC; VARIABILITY; FISHERIES; MODEL;
Keywords:
Fraser River; migration; sea surface temperature; sockeye salmon;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: McKinnell, S Fisheries & Oceans Canada, Pacific Biol Stn, Hammond Bay Rd, Nanaimo, BC V9R 5K6, Canada Fisheries & Oceans Canada Hammond Bay Rd Nanaimo BC Canada V9R 5K6
Citazione:
S. McKinnell et al., "Assessing the northern diversion of sockeye salmon returning to the FraserRiver, BC", FISH OCEANO, 8(2), 1999, pp. 104-114

Abstract

We examine the oft-quoted relationship between the migration of Fraser River sockeye salmon around the northern end of Vancouver Island and sea surface temperatures. We examine the methods used to estimate the northern diversion and conclude that the estimates have a sufficiently low expected errorto form a useful representation of sockeye salmon behaviour. The well-known relationship with Kains Island sea surface temperature is explored and problems are pointed out. In particular, we explore why Kains Island temperatures are good predictors of salmon behaviour in May when the sockeye can beover 1000 km away, but the coastal temperatures are poor predictors in July to September when the salmon are actually close by. We show that a more robust predictor can be developed using open ocean temperature fields and weshow why Kains Island fails as a predictor during the summer months. Finally, we show by cross-validation that the northern diversion is predictable with an r.m.s. error of about 0.1.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 04:01:53