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Thünen Institute of Sea Fisheries

With their research, scientists at the Thünen Institute of Sea Fisheries support policymakers in integrating fisheries into comprehensive marine management. The knowledge gained is always the basis for further considerations.

Analyses of fish stocks and forecasts of their development are embedded in studies of the ecosystems in which they live.

The next level encompasses economic considerations: Experts analyse production systems and the behaviour of actors under different biological, economic and normative conditions along the value chain from catch to plate.

The economic analyses are in turn part of the overall consideration of marine use concepts. They address the question of how different protection and use requirements cumulatively affect each other and what optimal solutions could look like. 


Dr. Vanessa Stelzenmüller
Project leader and leader work package 4

Vanessa Stelzenmüller focusses on ecosystem-based fisheries management and marine spatial planning, especially the spatial dimension of fishing activities and their interaction with other forms of use and marine ecosystems in the North Sea. She develops quantitative and adaptive methods to implement the ecosystem approach in fisheries and marine management. Furthermore, she works on spatial models of marine resources and fishing activities, using e.g. geostatistic methods and geographic information systems (GIS), as well as on spatially explicit decision-support tools for managing the use of marine resources. Part of her research interest is also the assessment of spatial planning measures with reference to fisheries and living marine resources.

+49 471 94460 381


Dr. Maren Kruse

Maren Kruse´s main research interest is the development of decision-making tools to assist the sustainable management of plaice fisheries in the southern North Sea. She focuses on capturing and quantifying the relationships between key components of this socio-ecological system using a spatial modeling approach. Her principal tasks include the analysis of ecological and socio-economic datasets as well as the spatial representation and evaluation of possible spatial planning measures related to fisheries.

+49 471 94460 384


M. Sc. Jonas Letschert
PhD student

Jonas Letschert focuses on the analysis of marine socio-ecological systems. He examines movements and behaviour of fishing fleets on the basis of vast data sets. In the next step he develops agent-based models.

+49 471 94460 287


Dr. Rabea Diekmann
Associated partner

Rabea Diekmann's main scientific interest is the influence of anthropogenic and climatic factors on the structure and functioning of marine ecosystems. For this, she uses different statistical modeling techniques, including time series analysis. She investigates various pressure and state indicators for their suitability to define a good environmental status (implementation of the Marine Strategy Framework Directive).

+49 471 4823 535


Thünen-Institut of Sea Fisheries
Herwigstr. 31
27572 Bremerhaven

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