WP3: Development of an operating model within the fisheries management evaluation framework


Laurence Kell, CEFAS

Per Sparre, DTU Aqua


The purpose of this work package is to develop and build the operating model within the operational management evaluation framework that allows test of plau­sible hypotheses about the dynamics of the stocks and fleets before implementation and which can appra­ise the biological and social and economic effects of the existing fishe­ries management measures in EU.

The operating model will be a simulation model of the system to be managed and the management procedures applied, which includes parameters and outputs from methods for monitoring and assessing the status of the system as well as relevant management options.

The operating model will be able to evaluate and simulate different management options continuously using output parameters and results from scientifically based tests of hypotheses and analyses performed in WP4 (cyclic process) with relevant descriptive models addressing main fisheries advisory and management problems. Consequently, the operating model within the evaluation framework can be used to evaluate results and output generated from other software packages (descriptive fisheries/stock assessment models and analysis tools), analyses, and existing databases being used for production of advice to ma­nagement bodies, and can be applied to important EU fisheries.

The simulation part, or the operating model, of the evaluation framework will be based on stochastic simulation techniques and take account of uncertainties (parametric as well as struc­tural uncertainty) as well as include risk assessments. It will simulate the data collection using existing databases, calculate variance in data, perform pre-processing of data, perform assessment of the system (with use of output from currently applied descriptive models and analysis tools, alternative existing models/tools, or modified existing (alternative) models/tools for fisheries/stock evaluation), and provide advice according to harvest control rules, management options and objectives. 

Simulation will mainly be performed using an integrated suite of software facilities with implementation of a common language (e.g. R) and interface, i.e. a common simulation model, which can handle output and results from a variety of descriptive models and analysis tools for analyzing different management scenarios, options and objectives.

Conceptual evaluation framework
EFIMAS Conceptual Evaluation Framework: Operating Models and Management Procedures.

Utilisation of EFIMAS

27 MARCH 2023