Project: BEFmate (Biodiversity and Ecosystem Functioning across marine and terrestrial ecosystems)

I am a marine biologist with a strong background in benthic ecology and biogeochemistry. I have integrated different areas of research to understand general patterns of changes observed recently in benthic marine environments as a consequence of climate change. Within the BEFmate project, we establish a field experiment in the coastal mudflat habitat of the North Sea. The aim of this study is to understand the impacts of short- and long-term environmental changes on the marine and terrestrial biodiversity and ecosystem functioning. The conducted studies focus on interaction, adaption and evolution of micro- and meiofauna, energy- and matterflux, and biogeochemical dynamic.

The following four research questions are in focus of interest:

    1) What conditions prevail in the natural Wadden Sea habitat?
    2) Which processes influence the natural marine and terrestrial biodiversity?
    3) How does biodiversity respond to local, regional and global climate changes and human impacts?
    4) Does changing biodiversity in benthic environments influence ecosystem functioning?

More about BEFmate:


Since 2014
Research Associate (Postdoc)

Animal Ecology, J.F. Blumenbach Institute of Zoology and Anthropology, University of Goettingen, Germany
Area of research: BEFmate (Biodiversity and Ecosystem Functioning across marine and terrestrial ecosystems), Wadden Sea of Spiekeroog, Prof. Dr. Stefan Scheu

Research Associate (Postdoc)

Micropaleontology, GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany
Area of research: identification of diatom assemblages in the upwelling area of Peru (project: SFB 754, German Research Foundation), Dr. Patricia Grasse, Prof. Dr. Martin Frank

2009 - 2013
Research Associate (PhD student)

Micropaleontology, GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany
Thesis title: 'Impact of elevated pCO2 on benthic foraminifera from the southwestern Baltic Sea' (project: Excellence Cluster 'Future Ocean' of Kiel University, German Research Foundation), Dr. Joachim Schoenfeld, Prof. Dr. Martin Frank

Research Associate

Management of rural areas, University of Rostock, Germany
Area of research: Conversation of the EU-Water Framework Directive with impacts of landscape management, Prof. Dr. Holger Behm

Research Associate

Marine Biology, IOW Leibniz Institute for Baltic Sea Research, Warnemünde, Germany
Area of research: Monitoring of the Phytoplankton community in the Baltic Sea, Dr. Monika Nausch

Diplom Biologist (equivalent to MSc)

Marine Biology, IOW Leibniz Institute for Baltic Sea Research, Warnemünde, Germany
Thesis title: 'Effects of elevated pCO2 of the abundance and diversity of phytoplankton in the Baltic Sea' (project: SOPRAN). Dr. Monika Nausch, PD Dr. Maren Voss, PD Dr. Joachim Dippner

2002 - 2008
Undergraduate studies in Biology

University of Rostock, Germany
Major: botany, minors: marine biology, ecology, land improvement and environmental protection


  • (6) Thomsen, J., Haynert, K. , Wegner, K. M., Melzner, F.: Impact of seawater carbonate chemistry on the calcification of marine bivalves. Biogeosciences, 12: 4209?4220, doi:10.5194/bg-12-4209-2015, 2015.

  • (5) Haynert, K. and Schönfeld J.: Impact of changing carbonate chemistry, temperature, and salinity on growth and test degradation of the benthic foraminifer Ammonia aomoriensis. Journal of Foraminiferal Research 44 (2): 76-89, 2014.

  • (4) Haynert, K., Schönfeld, J., Schiebel, R., Wilson, B., and Thomsen, J.: Response of benthic foraminifera to ocean acidification in their natural sediment environment: a long-term culturing experiment. Biogeosciences 11: 1581-1597, doi:10.5194/bg-11-1581-2014, 2014.

  • (3) Haynert, K., Schönfeld J., Polovodova -Astemann, I., and Thomsen, J.: The benthic foraminiferal community in a naturally CO2-rich coastal habitat in the southwestern Baltic Sea. Biogeosciences 9: 4421-4440, doi:10.5194/bg-9-4421-2012, 2012.

  • (2) Schönfeld, J., Alve, E., Geslin, E., Jorissen, F., Korsun, S., Spezzaferri, S., Abramovich, S., Almogi-Labin, A., Armynot du Chatelet, E., Barras, C., Bergamin, L., Bicchi, E., Bouchet, V., Cearreta, A., Di Bella, L., Dijkstra, N., Trevisan Disaro, S., Ferraro, L., Frontalini, F., Gennari, G., Golikova, E., Haynert, K., Hess, S., Husum, K., Martins, V., McGann, M., Oron, S., Romano, E., Mello Sousa, S., Tsujimoto A.: The FOBIMO (FOraminiferal BIo-MOnitoring) initiative-Towards a standardized protocol for soft-bottom benthic foraminiferal monitoring studies. Marine Micropaleontology 94-95: 1-13, 2012.

  • (1) Haynert K., Schönfeld J., Riebesell U., Polovodova I.: Biometry and dissolution features
    of the benthic foraminifer Ammonia aomoriensis at high pCO2. Marine Ecology Progress Series 432: 53-67, doi:10.3354/meps09138, 2011.