Spatial modeling of climate change induced impacts on German Coastal Fisheries Eva Papaioannou Christian Albrechts University of Kiel Department of Geography.

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Presentation transcript:

Spatial modeling of climate change induced impacts on German Coastal Fisheries Eva Papaioannou Christian Albrechts University of Kiel Department of Geography Cluster of Excellence ‘Future Ocean’ Coastal Risks and Sea-Level Rise RG © IFREMER

German Fishery Sector Primarily Cutter/coastal fisheries (vessels’ number, % employment) Coastal fisheries: North Sea, Baltic 2

3. Assessment/Adaptation of models’ implicit spatial framework Can the spatial framework of the models be improved? Scope of Research / Aims-Objectives 1. Scenario modeling of climate change How will oceanographic variables and ‘fishery habitats’ change with changing climate? 2. Simulation of climate change induced impacts on fishery resource - Use of spatially explicit fisheries’ bio-economic models What are the anticipated trends in population dynamics and fleet dynamics? (SPATIAL SIMULATION) 3

1. Selection of suitable oceanographic variables (Climate Change simulation) North Sea: Sea Surface Temperature / Baltic: SST, Salinity, O 2 Net Primary Production Bathymetry ‘Fish habitats’ 2. Formulation of Regional Coastal Fishery Database Species composition Species distribution With respect to oceanographic indices / Fish habitats (Data acquisition: BSH, German Hydrographic Institution) (Data acquisition: Federal/Local Ministries, ICES, HELCOM, etc) 3. Climate Change Scenario Modeling Oceanographic variables: Values SRES (IPCC) / Regional climate models Time scale: Offset year

4. Modeling of climate change impacts on coastal fishery Multi-species assessment (e.g. predator-prey)  Population dynamics How will species’ composition change with changing climate? Will new species enter the system? Additional considerations: Impact on species’ reproductive capacity and food availability (primary production)  Fleet dynamics Landings (€) % employment of workforce in local area Reduction in number of vessels, catches Ownership composition of the fleet (Social indices !) 5

4. Modeling of climate change impacts on coastal fishery Spatial framework Existing spatially integrated fisheries’ bio-economic models (ISIS-Fish, ECOSPACE of Ecopath with Ecosim) ISIS-Fish (Bay of Biscay, France)ECOSPACE (EwE) (N. California, U.S.A.) 6

4. Modeling of climate change impacts on coastal fishery Spatially integrated models Used primarily to assess management regulations (e.g. establishment of MPA’s) - Assessment of CC impacts on fishery resource. Regional calibrated versions of EwE: North Sea (developed), Baltic (under development, in the context of ‘MARE’). Assessment of models’ spatial framework. Aims/Objectives: Application of model on a ‘coastal’ scale How can the spatial resolution of the models be improved? Interactions between the models’ grid cells (How do the values of one cell define the respective values of neighboring cells?) 7

8 Thank you!