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A Comparison Of Condition Factor And Gonadosomatic Index Of Sardine Sardinops Sagax Stocks In The Northern And Southern Benguela Upwelling Ecosystems, 1984–1999 OceanDocs
Van der Lingen, C.D.; Kreiner, A.; Fréon, P..
Time-series of condition factor (CF) and gonadosomatic index (GSI) were generated using general linear models (GLM) for sardine Sardinops sagax stocks in the northern and southern Benguela ecosystems over the period 1984–1999. During this period the biomass of sardine in the northern Benguela remained at relatively low levels of <500 000 tons, whereas that of southern Benguela sardine increased 40-fold to 1.3 million tons. The GLMs explained 27 and 45% of the observed variation in CF, and 32 and 28% of the observed variation in GSI, for sardine in the northern and southern Benguela subsystems respectively. Whereas the sardine CF in the northern Benguela remained stable over time, that for the southern Benguela stock declined steadily during the study...
Tipo: Journal Contribution Palavras-chave: Abstracts; Ecosystems; Sardine fisheries; Ecosystems; Http://aims.fao.org/aos/agrovoc/c_2482.
Ano: 2001 URL: http://hdl.handle.net/1834/2124
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Developing a basis for detecting and predicting long-term ecosystem changes IRD
Jarre, A.; Moloney, C.L.; Shannon, L.J.; Fréon, Pierre; Van der Lingen, C.D.; Verheye, H.M.; Hutchings, L.; Roux, J.P.; Cury, Philippe.
Tipo: Text Palavras-chave: MILIEU MARIN; FONCTIONNEMENT DE L'ECOSYSTEME; PREVISION; MODELISATION; SYSTEME EXPERT; ANALYSE MULTIVARIABLE; INDICATEUR ECOLOGIQUE; PRODUCTION PRIMAIRE; ZOOPLANCTON; FACTEUR ABIOTIQUE; FACTEUR CLIMATIQUE; VENT; TEMPERATURE; OXYGENE; COURANT MARIN; UPWELLING; FACTEUR ANTHROPIQUE; PECHE; POLLUTION MARINE; VARIATION INTERANNUELLE; IMPACT DE L'ENVIRONNEMENT.
Ano: 2006 URL: http://www.documentation.ird.fr/hor/fdi:010046903
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Forecasting shelf processes of relevance to living marine resources in the BCLME IRD
Van der Lingen, C.D.; Fréon, Pierre; Hutchings, L.; Roy, C.; Bailey, G.W.; Bartholomae, C.; Cockcroft, A.C.; Field, J.G.; Peard, K.R.; Van der Plas, A.K..
Tipo: Text Palavras-chave: RESSOURCES HALIEUTIQUES; MILIEU MARIN; ESPECE COMMERCIALE; POISSON MARIN; SARDINE; ESTIMATION DE STOCK; ABONDANCE; FACTEUR ECOLOGIQUE; OXYGENE DISSOUS; TEMPERATURE; COURANT MARIN; UPWELLING; MASSE D'EAU; PLANCTON; DISTRIBUTION SPATIALE; FONCTIONNEMENT DE L'ECOSYSTEME; ANCHOIS; CRUSTACE; RECRUTEMENT; IMPACT DE L'ENVIRONNEMENT.
Ano: 2006 URL: http://www.documentation.ird.fr/hor/fdi:010046904
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