Research Interests

I'm interested in studying growth, mortality, and local adaptation in larval, juvenile, and adult stages of marine fish. I'm convinced that understanding how environmental and genetic variability affects growth and survival of fish at the individual level is one of the pre-requisites to comprehend the dynamics of fish populations. Currently, I'm focussing on two aspects in fisheries ecology, being (a) local adaptation in growth of fish populations across latitudinal gradients, and (b) assessing evidence for fisheries induced evolution in harvested fish stocks. So far, otolith microstructure analysis (i.e. the analysis of daily growth increments in fish otoliths) has played a key role in my scientific work. It will be complemented in the future by microchemical and meta-analytical approaches in what is meant to remain a "healthy" combination of field, laboratory, and modelling studies.

Publications

Research Articles (peer-reviewed)

Baumann, H., Voss, R., and Malzahn, A., and Temming, A. Growth and temporal origin of juvenile sprat in the German Bight (North Sea). Submitted to Marine Ecology Progress Series

Peck, M.A., Baumann, H., Clemmesen, C., Herrmann, J.-P., Kürs, U., and Temming, A. Somatic-, nucleic acid-, and otolith-based indicators of growth and condition in post-larval sprat (Sprattus sprattus). In preparation.

Baumann, H., Voss, R., Hinrichsen, H.-H., Mohrholz, V., Schmidt, J.O., and Temming, A. Investigating the selective survival of summer- over spring-born sprat, Sprattus sprattus, in the Baltic Sea. Fisheries Research 91: 1-14.

Stransky, C., Baumann, H., Fevolden, S.-E., Harbitz, A., Høie, H., Nedreass, K.H., Salberg, A.-B., Skarstein, T.H. Separation of Norwegian coastal cod and Northeast Arctic cod by outer otolith shape analysis. Fisheries Research 89: 159-166.

Baumann, H., Peck, M.A., Götze, E., and Temming, A. (2007). Starving early juvenile sprat, Sprattus sprattus L., in Western Baltic coastal waters: evidence from combined field and laboratory observations in August/September 2003. Journal of Fish Biology 70: 853-866.

Baumann, H., Hinrichsen, H.-H., Voss, R., Stepputtis, D., Grygiel, W., Clausen, L.W., and Temming, A. (2006). Linking growth- to environmental histories in central Baltic young-of-the-year sprat, Sprattus sprattus: an approach based on otolith microstructure analysis and hydrodynamic modeling. Fisheries Oceanography 15: 465-476.

Baumann, H., Gröhsler, T., Kornilovs, G., Makarchouk, A., Feldman, V., and Temming, A. (2006). Temperature-induced regional and temporal growth differences in Baltic young-of-the-year sprat, Sprattus sprattus. Marine Ecology Progress Series 317: 225-236.

Baumann, H., Hinrichsen, H.-H., Moellmann, C., Koester, F.W., Malzahn, A.M., and Temming, A. (2006). Recruitment variability in Baltic sprat, Sprattus sprattus, is tightly coupled to temperature and transport patterns affecting the larval and early juvenile stages. Canadian Journal of Fisheries and Aquatic Sciences 63: 2191-2201.

Voss, R., Clemmesen, C., Baumann, H., and Hinrichsen, H.-H. (2006). Baltic sprat larvae: Coupling food availability, larval condition and survival. Marine Ecology Progress Series 308: 243-254.

Hinrichsen, H.-H., Kraus, G., Voss, R., Stepputtis, D., and Baumann, H. (2005). The general distribution pattern and mixing probability of Baltic sprat juvenile populations. Journal of Marine Systems 58: 52-66.

Baumann, H., Peck, M.A., and Herrmann, J.-P. (2005). Short-term decoupling of otolith and somatic growth induced by food level changes in post-larval Baltic sprat, Sprattus sprattus. Journal of Marine and Freshwater Research 56: 539-547.

Baumann, H., Pepin, P., Davidson, F.J.M., Mowbray, F., Schnack, D., and Dower, J.F. (2003). Reconstruction of environmental histories to investigate patterns of larval radiated shanny (Ulvaria subbifurcata) growth and selective survival in a large bay of Newfoundland. ICES Journal of Marine Science 60: 243-258.

Other literature

Voss, R.; Stepputtis, D.; Bernreuther, M.; Möllmann, C.; Baumann, H.; Temming, A. and Hinrichsen, H.-H. 2007. Comparing recruitment processes in Baltic sprat 2002 vs. 2003 – predation. GLOBEC International Newsletter 13/2: 75-76.

Baumann, H. and Malzahn, A. 2007. New analyses of juvenile sprat growth and temporal origin in the German Bight (North Sea). GLOBEC International Newsletter 13/1: 30-31.

Baumann, H., Peck, M.A. and Temming, A. 2006. Processes acting during the post-larval / early juvenile stage influence Baltic sprat recruitment. GLOBEC International Newsletter 12/1: 79-81.

Baumann, H., Hinrichsen, H.-H., Koester, F., and Temming, A. 2004. A new retention index for the Central Baltic Sea: long-term hydrodynamic modelling used to improve Baltic sprat recruitment models. GLOBEC International Newsletter 10/1: 11-12.

Baumann, H., Hinrichsen, H.-H., Köster, F.W., and Temming, A. 2004. A new retention index for the central Baltic Sea: long-term hydrodynamic modelling used to study recruitment variability in central Baltic sprat, Sprattus sprattus. ICES CM 2004/L:02

Baumann, H. 2003. Die kleinsten Tagebücher der Welt: Rekonstruktion larvaler Wachstumsraten durch Otolithen-Mikrostrukturanalyse. DGM-Mitteilungen 1/03: 10-12.

Selected Oral & Poster Presentations

H. Baumann, Voss, R., Malzahn, A.M. and Temming, A. 2007. Growth & temporal Origin of juvenile sprat in the German Bight (North Sea). NAFO/ICES/PICES Symposium "Reproductive and Recruitment Processes of Exploited Marine Fish Stocks" Lisbon/Portugal 1-3 October 2007

H. Baumann, Voss, R., Hinrichsen, H.-H., Schmidt, J.A., and Temming, A. 2007. Growth and selective survival of Baltic O-group sprat in 2002 and 2003: Insights from two GLOBEC years of extensive field research. 31st Larval Fish Conference, 9 –12 July 2007, St.John’s, Newfoundland/Canada

H. Baumann. 2006. Growth, selective survival, and recruitment variability in Baltic sprat, Sprattus sprattus. Seminar talk presented on 18 August 2006 at the North-East Atlantic Fisheries Centre (DFO) in St.John's, Newfoundland (Canada) and on 6 September at the Bedford Institute of Oceanography, Dartmouth, Nova Scotia (Canada).

H. Baumann and M.A. Peck. 2006. Field and laboratory evidence for starving early juvenile sprat in Western Baltic coastal waters. 30th Larval Fish Conference, Lake Placid, New York (USA), 11.-14.September 2006.

H. Baumann and Hinrichsen, H.-H. 2006. Potential mechanisms underlying the strong environment-recruitment correlations in Baltic sprat: a discussion. Workshop on advancements in modelling physical-biological interactions in fish early-life history: recommended practices and future directions (WKAMF). 3.-5.April 2006 Nantes, France

H. Baumann, H.-H. Hinrichsen, F.Koester, and Axel Temming. 2004. A new retention index – and its use to explain long-term recruitment variability in sprat from the Central Baltic Sea. GLOBEC-Germany statutory meeting, Hamburg, Germany

H. Baumann. 2004. Growth, selective survival, and recruitment variability in sprat, Sprattus sprattus, from the Central Baltic Sea. Guest lecture at the Institute of Marine and Coastal Management (MCM), Cape Town, South Africa.

H. Baumann. 2004. Gut 100 Jahre Fischereibiologie – sind wir heute wirklich schlauer? Seniorenakademie, Jena, Germany

H. Baumann, Peck, M.A., and Herrmann, J.-P. 2004. Short-term decoupling of otolith and somatic growth induced by food level changes in post-larval Baltic sprat, Sprattus sprattus. 3rd International Symposium on Fish Otolith Research and Application from 11-16 July 2004, Townsville, Australia

H. Baumann, Rudi Voss, Wlodzimierz Grygiel and Axel Temming. 2004. Young-of-the-Year (YoY) Baltic sprat, Sprattus sprattus: A characteristics-of-survivors approach based on otolith microstructure analysis. GLOBEC-Germany statutory meeting, Hamburg, Germany

H. Baumann, R. Voss, W. Grygiel, and A. Temming. 2004. Otolith microstructure analysis reveals selective survival of Young-of-the-Year (YoY) sprat from the central Baltic Sea. 3rd International Symposium on Fish Otolith Research and Application from 11-16 July 2004, Townsville, Australia

H. Baumann, P. Pepin, F.Mowbray, and F. Davidson. 2002. Do growth patterns of larval radiated shanny, Ulvaria subbifurcata, reflect spatial and temporal differences in the environmental conditions? 2002. 26th Annual Larval Fish Conference, Bergen, Norway

H. Baumann. GLOBEC-Germany: "A Science(x)perience"