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Titolo:
Effects of tidal currents on Pacific salmon migration: results from a fine-resolution coastal model
Autore:
Bourque, MC; LeBlond, PH; Cummins, PF;
Indirizzi:
Inst Ocean Sci, Sidney, BC V8L 4B2, Canada Inst Ocean Sci Sidney BC Canada V8L 4B2 n Sci, Sidney, BC V8L 4B2, Canada Univ British Columbia, Dept Earth & Ocean Sci, Vancouver, BC V6T 1Z4, Canada Univ British Columbia Vancouver BC Canada V6T 1Z4 ver, BC V6T 1Z4, Canada
Titolo Testata:
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
fascicolo: 5, volume: 56, anno: 1999,
pagine: 839 - 846
SICI:
0706-652X(199905)56:5<839:EOTCOP>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
RIVER SOCKEYE-SALMON; COMPUTER-SIMULATIONS; SPATIALLY EXPLICIT; ADVECTION; LARVAE; OCEAN; SEA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Bourque, MC Inst Ocean Sci, Sidney, BC V8L 4B2, Canada Inst Ocean Sci Sidney BC Canada V8L 4B2 y, BC V8L 4B2, Canada
Citazione:
M.C. Bourque et al., "Effects of tidal currents on Pacific salmon migration: results from a fine-resolution coastal model", CAN J FISH, 56(5), 1999, pp. 839-846

Abstract

Experiments with a numerical model of salmon homing migration show that tidal currents can significantly affect return timing of sockeye salmon (Oncorhynchus nerka) off the northern coast of British Columbia. The numerical model combines results from a fine-resolution hydrodynamic model of the waters off northern British Columbia with an individual-based model of salmon migration. Results suggest that coastal tidal currents affect the return timing by causing the number of returning salmon to vary at a cycle corresponding to the dominant tidal period of 12.4 h. Such variations are associated with a patchiness that develops in the spatial distribution of simulated salmon. These features occur as the salmon swim through an oscillating tidal current that exhibits relatively sharp gradients in amplitude. The results may be of use to the design of sampling strategies where aliasing problems may occur.

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Documento generato il 30/03/20 alle ore 19:38:08