Herwigstraße 31

27572 Bremerhaven

Telephone: +49 471 94460 101

Fax: +49 471 94460 199

Climate, ocean, fish


Seabird with controls and resulting map (c) Thünen-Institut/Anna Akimova
The results of the SEABIRD can be blended to a survey map. (© Thünen-Institut/Anna Akimova)

Coupling of hydrographic measurements and model data to investigate the influence of variable hydrographic conditions on population dynamics of fish stocks in the North Sea and North Atlantic

Background and Objective

To identify and quantify important processes in the complex system 'Climate-Ocean-Fish', determine temporal and spatial scale of the interactions between marine organisms and their environment. 

Target Group

Stakeholders, Scientific community


To answer our questions, we combine different methods and research activities. On the one hand, long-term research expeditions are extremely important since they provide us with observations of key oceanographic parameters and their variability over broad time- and spatial scales. On the other hand, we conduct short-term and intensive case studies, which improve our understanding of certain processes and interactions within oceanic ecosystems.

One of the main goals of this project is to maintain observational programs, develop new observational strategies and perform the data quality control. The data are used for our own research analyses and are regularly delivered to national and international databases, where they serve as a basis for various climate studies and model validations. Another challenge of the project is to study the interplay between physical (e.g. temperature, salinity, water circulation) and biological parameters (e.g. stock biomass, recruitment). For this purpose, we use in situ observations, satellite data and the output of regional and global circulation models.

Our Research Questions

How does variable environment influence the distribution and population dynamics of the fish stocks in the North Atlantic?

Which processes and temporal/spatial scales are relevant?

Preliminary Results

  • New insights into the influence of the North Sea hydrography (temperature and salinity) on stock biomass and recruitment of commercially important fishes
  • Case study about the influence of the temperature and ocean currents on spatial distribution of redfish in the North Atlantic
  • New findings about daily vertical migration of Antarctic planktonic organisms
  • Working group documents in ICES and NAFO working groups


Involved Thünen-Partners


1.2001 - 12.2020

More Information

Projekt type:
Project status: ongoing



Results 1 - 10 of 20

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  1. Cisewski B (2020) Hydrographic conditions off West Greenland in 2019. Northwest Atlantic Fisheries Organization, 14 p, NAFO Sci Council Res Doc 20/018
  2. González-Pola C, Fratantoni P, Larsen KMH, Holliday NP, Dye SR, Mork KA, Beszczynska-Möller A, Valdimarsson H, Trofimov A, Parner H, Klein H, Cisewski B, Fontán A, Lyons K, Kolodziejczyk N, Grana R, Linders J, Wodzinowski T, Goszczko I, Cusack C (2019) The ICES Working Group on Oceanic Hydrography: A bridge from in-situ sampling to the remote autonomous observation era. Front Mar Sci 6:103, DOI:10.3389/fmars.2019.00103
    pdf document (limited accessibility) 843 kb
  3. Cisewski B (2018) Atmospheric conditions over West Greenland in 2017. Northwest Atlantic Fisheries Organization, 11 p, NAFO Sci Council Res Doc 18/006
  4. Cisewski B (2018) Regional report on West Greenland 2017. ICES WGOH Rep 2018:19-31
  5. Driemel A, Fahrbach E, Rohardt G, Beszczynska-Möller A, Boetius A, Budéus G, Cisewski B, Engbrodt R, Gauger S, Geibert W, Stein M, et al (2017) From pole to pole: 33 years of physical oceanography onboard R/V Polarstern. Earth Syst Sci Data 9:211-220, DOI:10.5194/essd-9-211-2017
    pdf document (limited accessibility) 4182 kb
  6. Cisewski B (2017) Hydrographic conditions off West Greenland in 2016. Northwest Atlantic Fisheries Organization, 19 p
  7. Beyraghdar Kashkooli O, Gröger JP, Nuñez-Riboni I (2017) Qualitative assessment of climate-driven ecological shifts in the Caspian Sea. PLoS One 12(5):e0176892, DOI:10.1371/journal.pone.0176892
    pdf document (limited accessibility) 4059 kb
  8. Nuñez-Riboni I, Akimova A (2017) Quantifying the impact of the major driving mechanisms of inter-annual variability of salinity in the North Sea. Progr Oceanogr 154:25-37, DOI:10.1016/j.pocean.2017.04.004
  9. Cisewski B (2016) Hydrographic conditions off West Greenland in 2015. Northwest Atlantic Fisheries Organization, 20 p
  10. Akimova A, Hufnagl M, Kreus M, Peck M (2016) Modeling the effects of temperature on the survival and growth of North Sea cod (Gadus morhua) through the first year of life. Fisheries Oceanogr 25(3):193-209, DOI:10.1111/fog.12145

Results 1 - 10 of 20

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