Ina Severin

Science Officer
Science Management
+49 (0)30 64181 648

Müggelseedamm 310, 12587 Berlin


As the science officer I assist the institute’s management in day-to-day operations as well as in the strategic development of IGB.

My tasks include

  • coordination of internal processes, e.g. with regard to quality management (reporting, audit, evaluation) and support of organisational and personnel development measures,
  • support of internal communication and networking within IGB through events and internal funding schemes,
  • representation of IGB in various working groups and committees; mainly matters concerning the Leibniz Association, the  Forschungsverbundes Berlin e.V. and the Scientific Advisory Board.

since 2014 
Science Officer at the Leibniz Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany

  • 2019/2020: Diploma of Advanced Studies (30 ECTS) 'Higher Education and Research Management', University of Applied Sciences Osnabrück, Germany
  • 2016: three months guest science expert at the Permanent Representation of the Federal Republic of Germany to UNESCO, Paris, France

2012 - 2014 
PostDoc at the Marine Biological Laboratory, Department of Biology, University of Copenhagen, Denmark

2010 - 2012 
PostDoc at the Department of Ecology and Evolution/Limnology, Evolutionary Biology Centre, Uppsala University, Sweden

2006 - 2010 
Ph.D student at the Department of Marine Microbiology, Centre for Estuarine and Marine Ecology, Netherlands Institute of Ecology, the Netherlands

  • 2008: two months research stay at the 'Institut de Ciènces del Mar' (ICM-CSIC), Barcelona, Spain

2000 - 2005 
Studies of Biology (marine biology, microbiology, ecology) at the University of Rostock, Germany

  • 2004: two months internship at Deakin University, Warrnambool, Australia
  • 2003: three months internship at the Institute of Marine Sciences, University of Dar es Salaam, Zanzibar, Tanzania


Comte J, Berga M, Severin I, Logue JB, Lindström E (2017) Contribution of different bacterial dispersal sources to lakes: Population and community effects in different seasons. Environmental Microbiology 19: 2391-2404



Severin I, Bentzon-Tilia M, Moisander PH, Riemann L (2015)
Nitrogenase expression in estuarine bacterioplankton influenced by organic carbon and availability of oxygen. 
FEMS Microbiology Letters 362: doi: 10.1093/femsle/fnv105

Bentzon-Tilia M, Severin I, Hansen LH, Riemann L (2015) 
Genomics and ecophysiology of heterotrophic nitrogen-fixing bacteria isolated from estuarine surface water. 
mBio 6:e00929-15. doi:10.1128/mBio.00929-15



Severin I, Lindström ES, Östmann Ö (2014)
Relationships between bacterial community composition, functional trait composition and functioning are context dependent - but what is the context? 
PLoS ONE 9: doi:10.1371/journal.pone.0112409



Severin I, Östman Ö, Lindström ES (2013)
Variable effects of dispersal on productivity of bacterial communities due to changes in functional trait composition. 
PLoS ONE 8: doi:10.1371/journal.pone.0080825



Lundin D, Severin I, Logue JB, Östman Ö, Andersson AF, Lindström ES (2012)
Which sequencing depth is sufficient to describe patterns in bacterial α- and β-diversity? 
Environmental Microbiology Reports 4: 367-372

Severin I, Confurius-Guns V, Stal LJ (2012)
Effect of salinity on nitrogenase activity and composition of the active diazotrophic community in intertidal microbial mats. 
Archives of Microbiology: 194: 483-491



Bauersachs T, Compaoré J, Severin I, Hopmans EC, Schouten S, Stal LJ, Sinninghe Damsté JS (2011)
Diazotrophic microbial community of coastal microbial mats of the southern North Sea. 
Geobiology 9: 349-359



Severin I, Stal LJ (2010)
Spatial and temporal variability in nitrogenase activity and diazotrophic community composition in coastal microbial mats. 
Marine Ecology Progress Series 417: 13-25

Severin I, Acinas SG, Stal LJ (2010)
Diversity of nitrogen-fixing bacteria in cyanobacterial mats. 
FEMS Microbiology Ecology 73: 514-525

Severin I, Stal LJ (2010) 
Diazotrophic Microbial Mats.
In: Seckbach J, Oren A (eds) Microbial Mats. Springer, Berlin/Heidelberg: 323-339

Stal LJ, Bolhuis H, Severin I (2010)
The Ecology of Nitrogen Fixation in Cyanobacterial Mats.
In: Hallenbeck PC (ed) Recent Advantages in Phototropic Prokaryotes. Springer, New York: 31-45

Severin I, Stal LJ (2010) 
NifH expression by five groups of phototrophs compared to nitrogenase activity in coastal microbial mats. 
FEMS Microbiology Ecology 73: 55-67

Severin I, Stal LJ (2010)
Temporal and spatial variability of nifH expression in three filamentous Cyanobacteria in coastal microbial mats. 
Aquatic Microbial Ecology 60: 59-70

Bolhuis H, Severin I, Confurius-Guns V, Wollenzien UIA, Stal LJ (2010)
Horizontal transfer of the nitrogen fixation gene cluster in the cyanobacterium Microcoleus chthonoplastes. 
ISME Journal 4: 121-130



Severin I, Stal LJ (2008)
Light dependency of nitrogen fixation in a coastal cyanobacterial mat. 
ISME Journal 2:1077-1088

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