Dr. rer. nat. Katharina Fietz


Research Division 3: Marine Ecology
Evolutionary Ecology of Marine Fishes

Photo: privat


Room: B46
Phone: 0431 600 4572
e-mail: kfietz(at)geomar.de

GEOMAR | Helmholtz-Zentrum für Ozeanforschung Kiel
Evolutionary Ecology of Marine Fishes
Düsternbrooker Weg 20
D-24105 Kiel

Scientific Interests

  • Marine Population Genomics
  • Marine Ecology
  • Conservation Biology
  • Adaptation to Climate Change and Anthropogenic Impacts
  • Science Outreach


  • 2013 - 2017: PhD in Marine Population Genetics at the University of Groningen, NL, and the Natural History Museum of Denmark, DK
  • 2009 - 2012: Master of Science in Biology at the University of Hamburg, D; Specialization in Ecology and Biodiversity
  • 2011 - 2012: Master thesis on anthropogenic impacts on Galapagos sea lion behavior at the University San Fransisco de Quito, EC
  • 2010 - 2011: Graduate Certificate of Science in Marine Biology at James Cook University, AUS
  • 2006 - 2009: Bachelor of Science in Biology at the University of Hamburg, D


  • Skovrind, M., Olsen, M.T., Fietz, K., Kragh, M.A., Vieira, F.G., Carl, H., Gilbert, M.T.P., Moller, P.R. (in prep) Genomic variation among European perch Perca fluviatilis driven by differentiated habitat and selection.
  • Fietz, K., van der Zee, J., Bérubé, M., Ryan, C., Berrow, S.D., López-Suarez, P., Wenzel, F.W., Gilbert, M.T.P., Palsbøll, P.J. (in prep) Genetic insights into the extent of gene flow between the two known humpback whale (Megaptera novaeangliae) breeding grounds in the North Atlantic, and into the effective size of the breeding population in Cape Verde
  • Fietz, K., Hintze, C.O.R., Skovrind, M., Kjærgaard Nielsen, K., Limborg, M.T., Krag, M.A., Palsbøll, P.J., Hestbjerg Hansen, L., Rask Møller, P., Gilbert, M.T.P. (submitted) Mind the Gut: Genomic insights to population divergence and gut microbial composition of two marine keystone species
  • Denkinger, J., Guevara, N., Ayala, S., Murillo, J.C., Hirschfeld, M., Montero–Serra, I., Fietz, K., Goldstein, T., Ackermann, M., Barragán, V., Cabrera, F., Chavez, C., Dubovi, E.J., Martinez, J., Trueba, G. (2017) Pup mortality and evidence for pathogen exposure in Galapagos sea lions (Zalophus wollebaeki) on San Cristobal Island, Galapagos. Journal of Wildlife Diseases: 53 (3). DOI: 10.7589/2016-05-092
  • Fietz, K., Galatius, A., Teilmann, J., Dietz, R., Frie, A.K., Klimova, A., Palsbøll, P., Jensen, L.F., Graves, J., Hoffman, J.I., & Olsen, M. T. (2016). Shift of grey seal subspecies boundaries in response to climate, culling and conservation. Molecular Ecology 25, 4097-4112
  • Sinding, M.H.S., Tervo, O.M., Grønnow, B., Gulløv, H.C., Toft, P., Bachmann, L., Fietz, K., Rekdal, S.L., Christoffersen, M.F., Heide-Jørgensen, M.P., Olsen, M.T., Foote, A. D. (2016) Sex determination of baleen whale artefacts: Implications for ancient DNA use in zooarchaeology. Journal of Archaeological Science: Reports, 10, 345-349
  • Klimova, A., Phillips, C. D., Fietz, K., Olsen, M.T., Harwood, J., Amos, W., & Hoffman, J.I. (2014). Global population structure and demographic history of the grey seal. Molecular Ecology , 23 , 3999-4017. 10.1111/mec.12850
  • Montero, I., Paez-Rosas, D., Murillo, J. C., Vegas-Vilarrubia, T. , Fietz, K. , & Denkinger, J. (2014). Environment-driven changes in terrestrial habitat use and distribution of the Galapagos sea lion. Endangered Species Research, 24, 9-19. 10.3354/esr00573
  • Fietz, K., Graves, J., & Olsen, M. T. (2013). Control Control Control: A Reassessment and Comparison of GenBank and Chromatogram mtDNA Sequence Variation in Baltic Grey Seals (Halichoerus grypus) . PLoS ONE, 8 (8). 10.1371/journal.pone.0072853
  • Carr, L., Stier, A., Fietz, K. , Montero, I., Gallagher, A., & Bruno, J. (2013). Illegal shark fishing in the Galapagos Marine Reserve. Marine Policy, 39, 317-321. 10.1016/j.marpol.2012.12.005