External Organisations

  • Johann Heinrich von Thünen-Institute, Germany
  • Femern A/S, Denmark

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The purpose of the project is to investigate main exploited fish stock and fisheries dynamics in relation to the marine environment with focus on the Fehmarn Belt area in the Western Baltic Sea, and to provide science and research based investigations and results, as well as reports and scientific peer reviewed journal papers on this. This is done in relation to scientific baseline investigations (2009-12) and impact assessment of the projection of the Fehmarn Belt Fixed Link between Denmark and Germany involving a science cooperation between DTU Aqua, vTI-OSF and Femern Bælt A/S in order to generate knowledge on potential impacts of establishment of the fixed link. Focus is on the most important commercial fisheries and fish species and stocks in the area (cod, herring, sprat, and to some extent flatfish and eels).

The project is coordinated by DTU Aqua.

The work covers
- WP0: Prospecting, planning and development of the science provisions and investigations, producing outline and main contents of the science provision contract and coordination of tasks hereunder;
- WP1: Review of knowledge: Review, provision of data, and analyses of selected historical data on fish stock dynamics;
- WP2: Extension of existing, standard research surveys and linking to standard survey time series to detect potential effects on important fish stocks;
- WP3: Evaluation of potential integrated effects on important fish stocks and fisheries;
- WP4: Evaluation of potential effects of change and variability in hydrographical features and conditions on recruitment for important fish stocks (cod, herring, sprat);
- WP5: Evaluation of herring occurrences and migrations as well as separation of spring and autumn spawning herring stock components in the area.

WP1 includes provision of state of the art knowledge from relevant historical surveys (including review of quality of survey indices), commercial fisheries data (e.g. on eels), and other relevant information on cod, herring and sprat recruitment dynamics covering all life stages with emphasis on fluctuations in distribution and productivity with respect to environmental and anthropogenic drivers of change including species interactions and fisheries.

WP 2 includes extension of existing selected standard surveys in the near field Fehmarn Belt area and analyses of both the standard and extended time series with respect to variability in distribution, density and abundance patterns of relevant stocks, as well developing advanced scientific survey evaluation models and methods for doing this.

WP 3 analyses stock and fisheries dynamics by use and development of complex multi-fleet-multi-stock bio-economic management evaluation models performing analyses on a very high spatial and temporal resolution scale using integrated fisheries, stock and survey data. The models evaluate different management options and scenarios relevant for the establishment of the fixed link.

WP4 evaluates variability in recruitment and important spawning areas for Baltic cod, herring and sprat according to hydrographic features and in relation to impact of the fixed link among other by use and further development of complex hydro-dynamic models.

WP 5 evaluates herring stock occurrence and migration patterns in the Baltic areas by use of genetic identity markers, otolith micro-structures and information from fisheries and research surveys in order to evaluate impact of the fixed link.



  • Research areas: Fisheries Management & Fish Biology
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ID: 2290381