Effects of climate change on marine phytoplankton community composition and ecosystem dynamics

Marine ecosystems continuously react to varying environmental conditions. This might take place on time scales shorter than previously thought.  We will evaluate the response of the planktonic marine ecosystem to the expected climate change by developing and applying own modeling tools. As a first step we aim to conduct regional experiments based on IPCC-emission scenarios. Regional target areas are the northeastern Atlantic marginal seas (North Sea, Baltic Sea). First results show prolonged growth and a more than twofold increase in the climatologically averaged cyanobacteria biomass and nitrogen fixation in the Baltic Sea. Life-cycle related and biological-physical feedback mechanisms play an important role (Hense et al. 2013).

 

Participating team members:
Richard Hofmeister, Inga Hense

Relevant Publications

Acheampong E., I. Hense and M.A. St John (2014). A model for the description of feeding regulation by mesozooplankton under different conditions of temperature and prey nutritional status. Ecological Modelling, 272, 84-97, doi:10.1016/j.ecolmodel.2013.09.009.

Hense I. , H.E.M. Meier and S. Sonntag (2013): Projected climate change impact on Baltic Sea cyanobacteria. Climatic Change, 119, 391-406, doi:10.1007/s10584-013-0702-y.

Warns A. , I. Hense and A. Kremp (2013): Modelling the Life Cycle of Dinoflagellates -- A case study with Biecheleria baltica. Journal of Plankton Research, 35, 379-392, doi: 10.1093/plankt/fbs095.

Warns A. , I. Hense and A. Kremp (2013): Encystment of a cold-water dinoflagellate -- From in vitro to in silico. Journal of Marine Systems, 125, 54-60, doi:10.1016/j.jmarsys.2012.10.003.