End-to-end modelling attempt in the North Sea to assess interactions of fishing and other human uses under climate change

Abstract : The North Sea is an ecosystem subject to climate change and anthropogenic pressures, such as fishing and wind farms. These components impact marine environment. The aim is to understand and evaluate these interactions between the different impacts on marine organisms under climate change. To answer questions: what are the combined effects of fishing and climate, and what are the effects of space competition between uses? The application of the OSMOSE model in the North Sea is developed. OSMOSE is a spatial trophodynamic model, for which 15 species have been selected and modelled period and area. During the parameterization step, biological parameters and modelling choices are defined derived from literature and data analysis (such as catch, fishing effort). Climate variability is forcing by the ERSEM model which provides biomasses of low trophic levels. The new version of OSMOSE implements fishing by fisheries with fishing effort and catchability. Since calibration was unsuccessful, the results present some indicators from uncalibrated model simulations. The calibration allows (via scenarios) to highlight the sensitivity of the parameters in OSMOSE as well as the need for a parameter validation phase. A calibration test version could also be used to check the calibration algorithm. Finally, it would be interesting to be able to construct management scenarios reflecting the management strategies implemented and those to come. To assess the interactions between the impacts of fishing, wind turbines and climate.
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Master Thesis
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Submitted on : Tuesday, December 11, 2018 - 2:09:22 PM
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  • HAL Id : dumas-01951408, version 1



Marine Ballutaud. End-to-end modelling attempt in the North Sea to assess interactions of fishing and other human uses under climate change. Life Sciences [q-bio]. 2018. ⟨dumas-01951408⟩



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