Visita Uv
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INTEGRACIÓN DE INFORMACIÓN BIOLÓGICA Y PESQUERA EN LA EVALUACIÓN DE STOCK
JC QuirozDivisión de Investigación PesqueraInstituto de Fomento [email protected]
Visita Estudiantes Biología Marina Universidad de Valparaíso
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Monitoreo de la pesquería
Cruceros de prospección
Información auxiliar
Opiniones expertas
Modelo conceptual
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MODELO CONCEPTUAL MODELO CUANTITATIVO
N1 = N0 + B – D + I –E
N1 = No + B – D
Pesca
•Dirigida•Accidental
Predación
•Presa-predador•Canibalismo
Ambiente
•Sobrevivencia•ReclutamientoD
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MODELO CONCEPTUAL MODELO CUANTITATIVO
N1 = No + B – D
Modelos de biomasa dinámica
Modelos en diferencia
Modelos estructurados
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Modelo de biomasa dinámica
Modelo Estructurado
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Modelo de biomasa dinámica
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Modelo de biomasa dinámica / estructurado
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Modelo Estructurado
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¿COMO EVALUAR INCERTIDUMBRE?
De los resultados de los modelo poblacionales
Determinista
Frecuentista
Bayesiano
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TABLAS DE RIESGO
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UN EJEMPLOSi aún hay tiempo
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Anchovy north
Anchovy north-central
Anchovy and common sardine
central-southFuegian sprat
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THE CHILEAN FISHERIES MANAGEMENT (1/2)
The small-pelagic case The exploitation strategies has been done via yearly
Total Allowable Catches (TAC's)
Based on reference fishing mortality
Using a overall exploitation criteria P(Ft>F60%)<0.1
Two review TAC process during the year
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DecemberThe National Council of Fisheries, adopted the Total Allowable Catch
(TAC)
February1st review TAC
Finish recruitment closed period
June2nd review TAC
Full fishing season
AugustStart reproductive
closed period
September (30)Start fishing season
JanuaryRecruitment
surveys
April-MayAutumn surveys
Stock Assessmentanchovy
common sardine
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THE CHILEAN FISHERIES MANAGEMENT (2/2)
Others important low-trophic level fisheries
The crabs, squat lobsters and shrimps species
December agreement on the TAC’s
Based on reference exploitation rate (µ=Y/B)
Using a overall exploitation criteria
P(µt>[0.12-0.17])<0.1 (decline biomass)
P(µt>[0.12-0.17])<0.5 (stable biomass)
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THANK YOU