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Software development

WP6

2

Team

• CEFAS: “architecture” and documentation

• IC: modules for calculating new functions (penalty prob.; enforcement cost)

• AZTI: links FLR to databases

• JRC: testing solutions for less experienced users (web access version)

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WP 6 software

Description of work

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5

PlanningDiscussed at meeting (14 June – London)

WP 6

Software

WP 3

Theoretical

Modelling WP 2/4/5

Data collection

Harmonisation

Estimation

WP 7 (IC)

Model

WP 8

Simulations

6

Feedback

WP 6

Software

WP 7 (IC)

Model

WP 8

Simulations

r – the “software used”

Also in rOr a module of FLR?MSE

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8

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• Requirement for development of generic code• Implement COBECOS theoretical approach on a

case-study basis• Each case-study has individual requirements• Guidance can be provided• Use bio-economic model versus Management

Strategy Evaluation (MSE)– depends on resources, data, linkages to other projects.

COBECOS requirements

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Operating ModelComputer simulation of

complex "Reality"

AssessmentComputer simulation of

sampling and assessment process

Management ControlsComputer simulation ofmanagement based on

perception of the system

Process errors are generatedin the operating model.

Data for assessments are generated with measurement error

Estimation errors arise due to the assessment procedures.

Assessment results in a “Perceived” system.

Performance Statistics

Feedback

Performance Statistics

Management Strategy Evaluation

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MANAGEMENT PROCEDUREAssess status of stock and set management options depending upon perceived status of fishery stock(s)

Management decision stage

Biological reference

points (e.g. MSY)

FLBRP

Management procedure

FLHCR

MANAGEMENT PROCEDUREAssess status of stock and set management options depending upon perceived status of fishery stock(s)

Management decision stage

Biological reference

points (e.g. MSY)

FLBRP

Management procedure

FLHCR

MANAGEMENT PROCEDUREAssess status of stock and set management options depending upon perceived status of fishery stock(s)

Management decision stage

Biological reference

points (e.g. MSY)

FLBRP

Management procedure

FLHCR

OPERATING MODELRepresents the “true” dynamics

of the system against which performance will be measured

Fleet dynamics

FLFleet

OPERATING MODELRepresents the “true” dynamics

of the system against which performance will be measured

Fleet dynamics

FLFleet

MODEL CONDITIONING

MODEL CONDITIONING

INITIAL CONDITIONS

INITIAL CONDITIONS

IMPLEMENTATION MODEL

FLEcon

IMPLEMENTATION MODEL

FLEcon

IMPLEMENTATION MODEL

FLEcon

IMPLEMENTATION MODEL

FLEcon

Assessment procedure

Assessment assumptions

Auxiliary information(e.g. tuning

indices)

FLIndices

Perceived stock

FLStock

Stock assessment (e.g. VPA)

FLAssess

Assessment procedure

Assessment assumptions

Auxiliary information(e.g. tuning

indices)

FLIndices

Perceived stock

FLStock

Stock assessment (e.g. VPA)

FLAssess

Assessment assumptions

Auxiliary information(e.g. tuning

indices)

FLIndices

Perceived stock

FLStock

Stock assessment (e.g. VPA)

FLAssess

Population biology

Stock dynamics

FLBiol

Stock processese.g. Recruitment

FLSR

Population biology

Stock dynamics

FLBiol

Stock processese.g. Recruitment

FLSR

Stock dynamics

FLBiol

Stock processese.g. Recruitment

FLSR

SUMMARY STATISTICS

Used to evaluate performance of management procedures

against objectives.

SUMMARY STATISTICS

Used to evaluate performance of management procedures

against objectives.

OBSERVATION ERROR MODEL

Generation of data on fishery and

stocks.

FLOEM

OBSERVATION ERROR MODEL

Generation of data on fishery and

stocks.

FLOEM

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Pros/cons

• Multi-fleet (<3 stocks)

• Parameterisation

• Integrating COBECOS code

• Provides shadow value of biomass

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Case studies

• which can/will undertake MSE

• currently as part of another project – EFIMAS

• Northern hake, CCAMLR, Ligurian, (Dutch), Channel (if stock)

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• Code for computation of ?– Derive

• Other functions? (regressions etc)

• Within case study: resources required! (dedication of participants – at case study level)

Work-plan