I'm interested in studying growth, selective mortality, and local adaptation in larval, juvenile, and adult stages of marine fish. The goal is to contribute to important contemporary issues in fisheries ecology such as recruitment variability, effects of climate change on fish stock dynamics, and evolutionary implications of commercial exploitation. Much of my early work employed otolith microstructure analysis (i.e. the analysis of daily growth increments in fish ear stones), which is a powerful means to deduce growth processes and survivorship during the early life history of fish, an example being the study on larval fish from a large bay in Newfoundland (Canada). For my PhD, I developed those approaches further in order to investigate growth characteristics, transport patterns and implications for recruitment variability in Baltic and North Sea sprat. I’ve shifted gears and continents since, my post-doctoral research now includes evolutionary issues such as local growth adaptations of marine fish across latitudes and the evidence for and importance of fishery-induced evolution in harvested fish stocks.
Research Articles (peer-reviewed)
Baumann, H. and Doherty, O. Decadal changes in the world’s coastal latitudinal temperature gradients. PLoS ONE (submitted)
Brown, E.E., Baumann, H., and Conover D.O. Evidence for temperature and photoperiod effects on sex determination in a fish. Evolution (submitted)
Baumann, Z., Casacuberta, N., Baumann, H., Masqué, P., and Fisher, N. S. Natural and Fukushima-derived radioactivity in macroalgae and mussels along the Japanese shoreline, Biogeosciences Discuss., 10, 2617-2633, http://dx.doi.org/10.5194/bgd-10-2617-2013, 2013
Baumann, H., Sutherland, S.J., and McBride, R.S. (2012) Longitudinal length back-calculations from otoliths and scales differ systematically in haddock. Transactions of the American Fisheries Society 142: 184-192. http://dx.doi.org/10.1080/00028487.2012.728168.
Buesseler, K.O., Jayne, S.R., Fisher, N.S., Rypina, I.I., Baumann, H., Baumann, Z., Breier, C.F., Douglass, E.M., George, J., Macdonald, A.M., Miyamoto, H., Nishikawa, J., Pike, S.M., Yoshida, S. (2012) Fukushima-derived radionuclides in the ocean and biota off Japan. Proceedings of the National Academy of Sciences 109: 5984-5988. http://dx.doi.org/10.1073/pnas.1120794109, WHOI press release.
Baumann, H., Talmage, S.C., and Gobler, C.J. (2012). Reduced early life growth and survival in a fish as a direct response to elevated CO2 levels. Nature Climate Change 2: 38-41. http://dx.doi.org/10.1038/NCLIMATE1291 SBU press release.
Voss, R., Peck, M.A., Hinrichsen, H.-H., Clemmesen, C., Baumann, H., Stepputtis, D., Bernreuther, M., Schmidt, J.O., Temming, A., and Köster, F.W. (2012) Recruitment processes in Baltic sprat - a re-evaluation of GLOBEC-Germany hypotheses' Progress in Oceanography 107:61-79. http://dx.doi.org/10.1016/j.pocean.2012.05.003
Peck, M.A., Baumann, H., Bernreuther, M., Clemmesen, C., Herrmann, J.-P., Haslob, H., Kanstinger, P., Köster, F., Petereit, C., Temming, A., and Voss, R. (2012) The ecophysiology of Sprattus sprattus in the Baltic and North Seas. Progress in Oceanography 103:42-57. http://dx.doi.org/10.1016/j.pocean.2012.04.013
Günther, C.C., Temming, A., Herrman, J.-P., Huwer B., Baumann H., Clemmesen-Bockelmann, C., Möllmann, C. (2012) A novel length back-calculation approach accounting for ontogenetic changes in the fish length - otolith size relationship during the early life of sprat (Sprattus sprattus L.). Canadian Journal of Fisheries and Aquatic Sciences 69:1-16. http://dx.doi.org/10.1139/F2012-054.
Brown, E.E., Baumann, H., and Conover, D.O. (2012) Absence of countergradient and cogradient variation in an oceanic silverside, the California grunion (Leuresthes tenuis). Marine Ecology Progress Series 461:175-186. http://dx.doi.org/10.3354/meps09802
Baumann, H., Rosales-Casián, J.A., and Conover, D.O. (2012) Contrasting latitudinal variations in vertebral number and sex determination in Pacific versus Atlantic silverside fishes. Copeia 2012: 342-351. http://dx.doi.org/10.1643/CG-10-189, [Data]
Baumann, H. and Gagliano, M. (2011) Changing otolith:fish size ratios during settlement in two tropical damselfishes. Helgoland Marine Research 65: 425-429. http://dx.doi.org/10.1007/s10152-011-0255-2
Baumann, H. and Conover, D.O. (2011) Adaptation to climate change: contrasting patterns of thermal-reaction-norm evolution in Pacific vs. Atlantic silversides. Proceedings of the Royal Society:B 278: 2265-2273. http://dx.doi.org/10.1098/rspb.2010.2479, [Data]
Conover, D. O. and Baumann, H. (2009). The role of experiments in understanding fishery-induced evolution. Evolutionary Applications 2: 276-290. http://dx.doi.org/10.1111/j.1752-4571.2009.00079.x
Baumann, H., Voss, R., and Malzahn, A., and Temming, A. (2009). The German Bight (North Sea) is a nursery area for both locally and externally produced sprat juveniles. Journal of Sea Research 61:234-243. http://dx.doi.org/10.1016/j.seares.2009.01.004
Baumann, H., Voss, R., Hinrichsen, H.-H., Mohrholz, V., Schmidt, J.O., and Temming, A. (2008) Investigating the selective survival of summer- over spring-born sprat, Sprattus sprattus, in the Baltic Sea. Fisheries Research 91: 1-14. http://dx.doi.org/10.1016/j.fishres.2007.11.004
Stransky, C., Baumann, H., Fevolden, S.-E., Harbitz, A., Høie, H., Nedreass, K.H., Salberg, A.-B., Skarstein, T.H. (2007) Separation of Norwegian coastal cod and Northeast Arctic cod by outer otolith shape analysis. Fisheries Research 89: 159-166. http://dx.doi.org/10.1016/j.fishres.2007.09.009
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. http://dx.doi.org/10.1111/j.1095-8649.2007.01346.x
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. http://dx.doi.org/10.1111/j.1365-2419.2005.00395.x
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. http://dx.doi.org/10.3354/meps317225
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. http://dx.doi.org/10.1139/F06-112
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. http://dx.doi.org/10.3354/meps308243
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. http://dx.doi.org/10.1016/j.jmarsys.2005.06.003
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. http://dx.doi.org/10.1071/MF04140
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. http://dx.doi.org/10.1016/S1054-3139(03)00019-5
The complete, citable source data from my research on Baltic and North Sea sprat can be accessed through the PANGAEA Publishing Network for Geoscientific & Environmental Data Base
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., K öster, 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
Baumann, H.. Fish in a future acidified ocean - one less thing to worry about? Invited seminar presentation. (1) Northeast Fisheries Science Center, Woods Hole, MA (26 Oct 2011), (2) SoMAS, SBU, Stony Brook, NY. Friday Seminar (18 Nov 2011).
Baumann, H. and D.O.Conover. Contrasting patterns of thermal-reaction-norm evolution in Pacific vs. Atlantic silversides - Implications for adaptation to climate change. (1) ASLO 2011 Aquatic Sciences Meeting 13-18 February 2011, San Juan, Puerto Rico (2) American Fisheries Society annual meeting 2011, 3-8 September 2011, Seattle WA.
H.Baumann. Crankin' up the heat - global climate change and marine organisms. SoMAS public lecture series. Stony Brook Southampton. 5 November 2010 (pdf)
H.Baumann. 2010. Detecting changes in von Bertalanffy growth parameters (K, L(inf)) in a hypothetical fish stock subject to size-selective fishing (ppt). Poster prepared in partial fulfillment of course requirements ('Likelihood and Bayesian Data Analysis' by S.Munch) (ppt)
H. Baumann. Studying consequences of man-made global changes for marine fish: Recruitment, climate, fishery. Invited seminar lecture, Northeast Fisheries Science Center, Woods Hole, MA, September 1st 2010.
H. Baumann and M. McCormick. Otolith-derived insights about the settlement process in Rolland's demoiselle (Chrysiptera rollandi). 4th International Otolith Symposium 23-28 August 2010 Monterey, CA.
Baumann, H. and Conover, D. O. 2009. Contrasting latitudinal patterns of countergradient growth variation in silverside fishes (Pisces: Atherinidae) from the Pacific vs Atlantic coasts. Society for Integrative and Comparative Biology (SICB) annual meeting 3 - 7 January 2009, Boston (MA) US.
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"
Baumann, H. and Gobler, C.J. Will rising CO2 levels is the ocean affect growth and survival of marine fish early life stages? NSF Project# 1097840 ($650,000 3 years)