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Titolo:
Surplus production, variability, and climate change in the great sardine and anchovy fisheries
Autore:
Jacobson, LD; De Oliveira, JAA; Barange, M; Cisneros-Mata, MA; Felix-Uraga, R; Hunter, JR; Kim, JY; Matsuura, Y; Niquen, M; Porteiro, C; Rothschild, B; Sanchez, RP; Serra, R; Uriarte, A; Wada, T;
Indirizzi:
Natl Marine Fisheries Serv, SW Fisheries Sci Ctr, La Jolla, CA 92038 USA Natl Marine Fisheries Serv La Jolla CA USA 92038 , La Jolla, CA 92038 USA Marine & Coastal Management, ZA-8012 Rogge Bay, South Africa Marine & Coastal Management Rogge Bay South Africa ZA-8012 South Africa Plymouth Marine Lab, GLOBEC Int Project Off, Plymouth PL1 3DH, Devon, England Plymouth Marine Lab Plymouth Devon England PL1 3DH L1 3DH, Devon, England Ctr Reg Invest Pesqueras, Inst Nacl Pesca, Guaymas 85400, Sonora, Mexico Ctr Reg Invest Pesqueras Guaymas Sonora Mexico 85400 5400, Sonora, Mexico Inst Politecn Nacl, CICIMAR, La Paz 23096, BCS, Mexico Inst Politecn NaclLa Paz BCS Mexico 23096 MAR, La Paz 23096, BCS, Mexico Natl Fisheries Res & Dev Inst, W Fisheries Res Inst, Jung Gu 400201, Incheon, South Korea Natl Fisheries Res & Dev Inst Jung Gu Incheon South Korea 400201 th Korea Univ Sao Paulo, Inst Oceanog, BR-05508 Sao Paulo, Brazil Univ Sao Paulo Sao Paulo Brazil BR-05508 nog, BR-05508 Sao Paulo, Brazil Inst Mar Peru, Esquina Gamarra & Gen Valle, Chucuito, Callao, Peru Inst Mar Peru Chucuito Callao Peru a & Gen Valle, Chucuito, Callao, Peru Ctr Oceanog Vigo, Inst Espanol Oceanog, Vigo 36280, Spain Ctr Oceanog Vigo Vigo Spain 36280 nst Espanol Oceanog, Vigo 36280, Spain Univ Massachusetts, Sch Marine Sci & Technol, New Bedford, MA 02744 USA Univ Massachusetts New Bedford MA USA 02744 ol, New Bedford, MA 02744 USA Inst Nacl Invest & Desarrollo Pesquero, RA-7600 Mar Del Plata, Argentina Inst Nacl Invest & Desarrollo Pesquero Mar Del Plata Argentina RA-7600 a Inst Fomento Pesquero, Valparaiso, Chile Inst Fomento Pesquero Valparaiso Chile ento Pesquero, Valparaiso, Chile Inst Tecnol Pesquero & Alimentario, San Sebastian 20008, Spain Inst TecnolPesquero & Alimentario San Sebastian Spain 20008 0008, Spain Japan Minist Agr Forestry & Fisheries, Natl Res Inst Fisheries Sci, Kanazawa Ku, Yokohama, Kanagawa 236, Japan Japan Minist Agr Forestry & FisheriesYokohama Kanagawa Japan 236 , Japan
Titolo Testata:
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
fascicolo: 9, volume: 58, anno: 2001,
pagine: 1891 - 1903
SICI:
0706-652X(200109)58:9<1891:SPVACC>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
PACIFIC SARDINE; NORTHERN ANCHOVY; SAGAX; CALIFORNIA; FLUCTUATIONS; ABUNDANCE; TRENDS; COAST;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Jacobson, LD Natl Marine Fisheries Serv, NE Fisheries Sci Ctr, 166 Water St, Woods Hole, MA 02543 USA Natl Marine Fisheries Serv 166 Water St Woods Hole MA USA 02543
Citazione:
L.D. Jacobson et al., "Surplus production, variability, and climate change in the great sardine and anchovy fisheries", CAN J FISH, 58(9), 2001, pp. 1891-1903

Abstract

We used fishery and survey data to calculate annual surplus production (ASP) and instantaneous surplus production rates (ISPR) for eight anchovy and nine sardine stocks. In addition, we calculated ASP per unit spawning area for six anchovy and six sardine stocks. Median ASP was highest for stocks with highest median biomass (mostly anchovies), and ASP was typically about 16% of stock biomass. ASP was often negative, more frequently for anchovies(36% of years) than for sardines (17% of years). ISPR was less variable for sardines and autocorrelated for longer-lived stocks (mostly sardines). Strong biomass increases tended to be preceded by short, abrupt increases in ISPR, and declines were pronounced when catches exceeded ASP for 5 years ormore. The longest "runs" of positive and negative production were 21 and 4years for sardine off Japan, 10 and 3 years for sardine off California, 8 and 2 years for anchovy off Peru, and 4 and 3 years for anchovy off California. ISPR is more sensitive to environmental changes than catch, biomass, or ASP and appear to be better for identifying environmentally induced regime shifts. Long time series show evidence of density-dependent effects on ASP in anchovies and sardines, but environmentally induced variation appears to dominate.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/05/20 alle ore 15:04:03