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I’m a PhD student at the University of Bremen / Alfred Wegener Institute Bremerhaven, working on recycling of iron in HNLC areas of the Southern Ocean by krill and salp fecal pellets. Since science can only create impact when it is visible and understandable to colleagues, politicians and the wider public, I’m developing an increasing interest in science communication.
Over the last decades, it has been reported that the habitat of the Southern Ocean (SO) key species Antarctic krill (Euphausia superba) has contracted to high latitudes, putatively due to reduced winter sea ice coverage, while salps as Salpa thompsoni have extended their dispersal to the former krill habitats. To date, the potential implications of...
This study assessed the genetic relationship between Evadne nordmanni of the Baltic Sea and the North Sea from sequence variation of the mitochondrial cytochrome c oxidase subunit I gene (COI) of 88 specimens from 13 different sites, and from further published data from the Atlantic and Pacific basins. The COI sequences of E. nordmanni from the Nor...
We want to find out how krill and salps influence the availability of iron to phytoplankton in HNLC areas of the Southern Ocean. Since iron is the limiting factor in vast areas of the Southern Ocean, and recent research suggests that krill withdraws from its former habitats to higher latitudes, we are interested in how a shift from a krill to a salp dominated ecosystem will change the iron bioavailability for phytoplankton. Although we do not specifically focus on the following topics, implications of this research lead as far as carbon export and climate change.