(Ph.D., University of Hamburg, Germany) Associate Professor of Marine Sciences
I am broadly interested in studying how fish populations are adapted to the natural variability in their environment and how they may therefore react to unfolding anthropogenic changes in our oceans and coastal waters. This includes changes in pH (ocean acidification) and temperature (global warming), but also ubiquitous man-made alterations to the marine food web and natural mortality patterns (fisheries exploitation and selection). I pursue these questions by employing a healthy mix of experimental, field, and modeling approaches with tools ranging widely from otolith microstructure and microchemistry, fish physiology, to population dynamics and evolutionary genetics.
Hannes Baumann: CV
Max Zawell – PhD Student
Lucas Jones – PhD Student
David Riser – MS Student
Kelli Mosca – M.Sc. 2022
Lucas Jones – M.Sc. 2021
Callie Concannon – M.Sc. 2020
Christopher Murray – Ph.D. 2018
Julie Pringle – M.Sc. 2018
Jacob Snyder – M.Sc. 2017
BIOL 1108: Principles of Biology (FS 2015 – FS 2021)
“Principles of Biology” is a lecture and lab course and together with BIOL 1107 forms an integral component of undergraduate STEM education at UConn Avery Point. The course and lab will serve as an introduction to the chemical units of life, ecology, plant diversity, physiology, and anatomy.
MARN 4018/5018: Ecology of Fishes (SS2015 – SS2022)
Ecology of Fishes introduces and discusses classic topics of fish ecology such as distribution, feeding, bioenergetics, growth, larval fish ecology, biotic interactions or life history evolution, with the additional goal of providing a forum to discuss contemporary research of these topics. For each weeks topic, a lecture is followed by student-led discussions on topic-relevant publications of their choice. Instead of merely passing on what is already known, the main objective of each class is to identify issues that are still insufficiently understood and thus require further research. Particular emphasis is placed on issues that are somehow still debated, novel, or unresolved. Although we won’t be able to avoid touching on fish anatomy, physiology, or taxonomy, these have been covered elsewhere and are thus not the priority of this course. In addition, we will also have one special seminar covered by a guest speaker.
Baumann, H., Pacileo, D., Benway, J., and McBride, R.S. 2021. Increasing Black Sea Bass abundance in Long Island Sound: a local or broader regional phenomenon? Connecticut Sea Grant College Program R/LR-30 ($149,173 2 years).
Baumann, H., Savoy, T., Benway, J., and Pacileo, D. 2019. A re-emergent spawning population of Atlantic Sturgeon in the Connecticut River? Connecticut Sea Grant #R/LR-29 ($150,000 2 years)
Therkildsen, N. and Baumann, H. 2018. Collaborative research: The genomic underpinnings of local adaptation despite gene flow along a coastal environmental cline. NSF-OCE #1756316 ($325,388 3 years)
Baumann, H., Wiley, D. Kaufman, L., Valentine, P., and Gallager, S. 2016. Sensitivity of larval and juvenile sand lance Ammodytes dubius on Stellwagen Bank to predicted ocean warming, acidification, and deoxygenation. Northeast Regional SeaGrant Consortium ($198,393 2 years)
Dam, H., Baumann, H., Finiguerra, M., and Pespeni, M. 2016. Collaborative Research: Transgenerational phenotypic and genomic responses of marine copepods to the interactive effects of temperature and CO2. NSF-OCE #1550180 ($609,684 3 years)
Dam, H. Baumann, H. and Finiguerra, M. 2016. Predicting the performance of the copepod Acartia tonsa under future conditions of temperature and CO2. Connecticut Sea Grant College Program ($149,969 2 years)
Baumann, H. and Nye, J. 2015. Collaborative research: Understanding the effects of acidification and hypoxia within and across generations in a coastal marine fish. NSF-OCE #1536336 ($829,035 3 years)
Baumann, H. and Rader, L. 2015. Lifting a treasure: Full digitization of Project Oceanologyâs 40+ years of coastal research data in Long Island Sound Connecticut Sea Grant Project #PD-15-14 ($5,000 3 months)
Baumann, H. and McBride, R.S. 2012. Calibration of the scale and otolith size vs. fish size relationship for Georges Bank haddock. NOAA-NMFS. $14,800
Baumann, H. and Gobler, C.J. 2011. Will rising CO2 levels is the ocean affect growth and survival of marine fish early life stages? NSF-OCE #1097840 ($650,000 3 years)
Conover, D.O. (transferred to Baumann, H. in 2010). 2008. Local adaptation across latitudes: spatial scales, gene flow, and correlates of countergradient variation NSF-OCE #0425830 ($860,684 3 years).
*denotes author/co-author is a student in the Baumann Lab
- Reid S. Brennan, R.S., deMayo, J.A., Dam, H.G., Finiguerra, M., Baumann, H., Buffalo, V., and Pespeni, M.H.
Experimental evolution reveals the synergistic genomic mechanisms of adaptation to ocean warming and acidification in a marine copepod
PNAS (in revision)
- Akopyan, M., Tigano, A., Jacobs, A., Wilder, A.P., Baumann, H., and Therkildsen N.O. (2022)
Comparative linkage mapping uncovers massive chromosomal inversions that suppress recombination between locally adapted fish populations
Molecular Ecology (in press)
- Baumann, H., Jones, L.F.*, Murray, C.S., Siedlecki, S.A., Alexander, M., and Cross, E.L. (2022)
Impaired hatching exacerbates the high CO2 sensitivity of embryonic sand lance, Ammodytes dubius
Marine Ecology Progress Series 687:147-162 | UConn Today press release
- Suca, J.J., Ji, R., Baumann, H., Pham, K., Silva, T.L., Wiley, D.N., Feng, Z., and Llopiz, J. (2022)
Larval transport pathways from three prominent sand lance habitats in the Gulf of Maine
Fisheries Oceanography 31:333-352
- Brennan, R.S., deMayo, J.A., Dam, H.G., Finiguerra, M., Baumann, H., and Pespeni, M.H. (2022)
Loss and recovery of transcriptional plasticity after long-term adaptation to global change conditions in a marine copepod
Nature Communications 13:1147
- Baumann, H. (2022)
Chapter 11: Fish Ecology
In: Pan, J. and Pratolongo, P.D. (eds) Marine Biology: a functional approach to the oceans and their organisms. CRC Press/Science Publishers (Taylor & Francis)
ISBN 978-0-367-02498-7 (hardback), 978-0-429-39924-4 (e-book) | published March 3rd 2022
- Concannon, C.A., Cross, E.L., Jones, L.F.*, Murray, C.S., Matassa, C. McBride, R.S., and Baumann, H. (2021)
Temperature-dependent effects on fecundity in a serial broadcast spawning fish after whole-life high-CO2 exposure
ICES Journal of Marine Science 78:3724–3734
- Dam, H.G., deMayo, J.A., Park, G., Norton, L., He, X., Finiguerra, M., Baumann, H., Brennan, R.S., and Pespeni, M.H. (2021)
Rapid, but limited, zooplankton adaptation to simultaneous warming and acidification
Nature Climate Change 11:780–786
- Rooker, J.R., Wells, D.R.J., Block, B.A., Liu, H., Baumann, H., Chiang, W.-C., Zapp, M., Miller, N.R., Ohshimo, S., Tanaka, Y., Dance, M.A., Dewar, H., Snodgrass, O.E., and Shiao, J.-C. (2021)
Natal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers
Scientific Reports 11:14216
- Baumann, H., Suca, J.J., Wiley, D.N., and Llopiz, J.K. (2020)
Origin and fate of sandlance Ammodytes dubius offspring from Stellwagen Bank, inferred from Lagrangian drift simulations.
BOEM white paper in partial fulfillment to grant #M17PG0019 Productivity and ecology of sand habitats
- Suca, J., Wiley, D., Silva, T., Robuck, A., Richardon, D., Glancy, S., Clancey, E., Giandonato, T., Solow, A.R., Thompson, M.A., Hong, P., Baumann, H., Kaufman, L., and Llopiz, J.K. (2021)
Sensitivity of sand lance to shifting prey and hydrography indicates forthcoming change to the Northeast US shelf forage fish complex
ICES Journal of Marine Sciences 78:1023–1037
- Schwemmer, T.S., Baumann, H., Murray, C.S., Molina, A.I., and Nye, J. (2020)
Synergistic metabolic responses of embryos, but not larvae, of a coastal forage fish to acidification and hypoxia
Journal of Experimental Biology 223:jeb228015
- Silva, T., Wiley, D., Valentine, P., Blackwood, D., Thompson, M., Hong, P., Kaufman, L., Suca, J., Llopiz, J., Baumann, H. and Fay, G. (2020)
High collocation of sand lance and top predators in the southwestern Gulf of Maine: implications for conservation and management
Conservation Science and Practice 3:e274
- Murray, C.S. and Baumann, H. (2020)
Are long-term growth responses to elevated pCO2 sex-specific in fish?
PLOS One 15:e0235817
- Staudinger, M., Goyert, H., Suca, J., Coleman, K., Welch, L., Llopiz, J., Wiley, D., Altman, I., Applegate, A., Auster, P., Baumann, H., Beaty, J., Boelke, D., Kaufman, L., Loring, P., Moxley, J., Paton, S., Powers, K., Richardson, D.E., Robbins, J., Runge, J., Smith, B.E., Spiegel, C., and Steinmetz, H. (2020)
The role of sand lances (Ammodytes sp.) in the Northwest Atlantic Ecosystem: a synthesis of current knowledge with implications for conservation and management
Fish and Fisheries 21:522-556
- Therkildsen, N.O. and Baumann, H. (2020)
A comprehensive non-redundant reference transcriptome for the Atlantic silverside Menidia menidia
Marine Genomics 53:100738
- Cross, E.L., Murray, C.S.*, and Baumann, H. (2019)
Diel and tidal pCO2 × O2 fluctuations provide physiological refuge to a coastal forage fish
Scientific Reports 9:18146
- Pringle, J.W.* and Baumann, H. (2019)
Otolith-based growth reconstructions in young-of-year Atlantic silversides (Menidia menidia) and their implications for sex-selective survival
Marine Ecology Progress Series 632:1-12
- Munday, P.L., Rummer, J.L. and Baumann, H. (2019)
Chapter 10. Adaptation and evolutionary responses to high CO2 pp 369-395
In: Grosell, M. Munday, P.L., Brauner, C. and Farell, A.P. (eds) Fish Physiology Volume 37: Carbon Dioxide Elsevier (Dec 10th, 2019)
- Murray, C.S.*, Wiley, D., and Baumann, H. (2019)
High sensitivity of a keystone forage fish to elevated CO2 and temperature
Conservation Physiology 7:1-12
- Breitburg, D.L., Baumann, H., Sokolova, I.M., and Frieder, C.A. (2019)
Chapter 6. Multiple stressors – forces that combine to worsen deoxygenation and its effects.
In: Ocean deoxygenation: everyone’s problem. Causes, impacts, consequences and solutions
International Union for Conservation of Nature (IUCN). Report xxii, 562p.
- Therkildsen, N.O., Wilder, A.P., Conover, D.O., Munch, S.B., Baumann, H., and Palumbi, S.R. (2019)
Contrasting genomic shifts underlie parallel phenotypic evolution in response to fishing
Related perspective: Fishing for answers Science 365: 443-444 | Cornell Press release | UConn Today
- Baumann, H. (2019)
Experimental assessments of marine species sensitivities to ocean acidification and co-stressors: how far have we come?
Canadian Journal of Zoology 97:399-408
- Snyder, J.T*, Whitney, M.M., Dam, H.G., Jacobs, M.W., and Baumann, H. (2019)
Citizen science observations reveal rapid, multi-decadal ecosystem changes in eastern Long Island Sound
Marine Environmental Research 146: 80-88
- Baumann, H., Cross, E.L., and Murray, C.S. (2018)
Robust quantification of fish early life CO2 sensitivities via serial experimentation
Biology Letters 14:20180408
- Murray, C.S. and Baumann, H. (2018)
You better repeat it: complex temperature Ã CO2 effects in Atlantic silverside offspring revealed by serial experimentation
- Madigan, D.J., Li, M., Runsheng, Y., Baumann, H., Snodgrass, O.E., Dewar, H., Krabbenhoft, D.P., Baumann, Z., Fisher, N.S., Balcom, P., Sunderland, E.M. (2018)
Mercury stable isotopes reveal influence of foraging depth on mercury concentrations and growth in Pacific bluefin tuna
Environmental Science & Technology 52:6256-6264
- Baumann, H., Parks, E.M.*, and Murray, C.S.* (2018)
Starvation rates in larval and juvenile Atlantic silversides (Menidia menidia) are unaffected by high CO2 conditions.
Marine Biology 165:75-83
- Snyder, J.T.*, Murray, C.S.*, and Baumann, H. (2018)
Potential for maternal effects on offspring CO2 sensitivities in the Atlantic silverside (Menidia menidia).
Journal of Experimental Marine Biology and Ecology 499:1-8
- Baumann, H. and Smith, E. (2018)
Quantifying metabolically-driven pH and oxygen fluctuations in US nearshore habitats at diel to interannual time-scales
Estuaries & Coasts 41:1102-1117
- Dam, H.G. and Baumann, H.
Climate change, zooplankton and fisheries.
In: Phillips B, Perez-Ramirez M (eds) The impacts of climate change on fisheries and aquaculture. Wiley/Blackwell (November 2017)
- Baumann, Z., Mason, R.P., Conover, D.O., Balcom, P., Chen, C.Y., Buckman, K.L., Fisher, N.S., and Baumann, H. (2017)
Mercury bioaccumulation increases with latitude in a coastal marine fish (Atlantic silverside Menidia menidia).
Canadian Journal of Fisheries and Aquatic Sciences 74:1009-1015
- Murray, C.S.*, Fuiman, L., and Baumann, H. (2017)
Consequences of elevated CO2 exposure across multiple life stages in a coastal forage fish.
ICES Journal of Marine Science 74:1051-1061
- Gobler, C.J. and Baumann, H. (2016)
Hypoxia and acidification in ocean ecosystems: Coupled dynamics and effects on marine life.
Biology Letters 12:20150976
- Baumann, H. (2016)
Combined effects of ocean acidification, warming, and hypoxia on marine organisms.
Limnology and Oceanography e-Lectures 6:1-43
- OâLeary, S.J., Martinez, C.M., Baumann, H., Abercrombie, D.L., Conover, D.O., Poulakis, G.R., Murray, C.H., Feldheim, K.A., Chapman, D.D. (2016)
Population genetics and geometric morphometrics of the Key silverside, Menidia conchorum, a marine fish in a highly fragmented inland habitat.
Bulletin of Marine Science 92:33-50
- Baumann, H., Wells, R.J.D., Rooker, J.R., Baumann, Z.A., Madigan, D.J., Dewar, H., Snodgrass, O.E., and Fisher, N.S. (2015)
Combining otolith microstructure and trace elemental analyses to infer the arrival of Pacific bluefin tuna juveniles in the California Current Ecosystem.
ICES Journal of Marine Science 72: 2128-2138.
- Peck, M.A., Baumann, H., Clemmesen, C., Herrmann, J.-P., Moyano, M., and Temming A. (2015)
Calibrating and comparing somatic-, nucleic acid-, and otolith-based indicators of growth and condition in young juvenile European sprat (Sprattus sprattus).
Journal of Experimental Marine Biology and Ecology 147: 217-225.
- Malvezzi, A.J.*, Murray, C.M.*, Feldheim, K.A., Dibattista, J.D., Garant, D., Gobler, C.J., Chapman, D.D., and Baumann, H. (2015)
A quantitative genetic approach to assess the evolutionary potential of a coastal marine fish to ocean acidification.
Evolutionary Applications 8: 352-362.
- Yencho, M.A, Jordaan, A., Cerrato, R.M., Baumann, H. and Frisk, M.G. (2015)
Growth and mortality in coastal populations of Winter Flounder: implications for recovery of a depleted population.
Marine and Coastal Fisheries 7: 246-259.
- Depasquale, E.*, Baumann, H., and Gobler, C.J. (2015)
Variation in early life stage vulnerability among Northwest Atlantic estuarine forage fish to ocean acidification and low oxygen.
Marine Ecology Progress Series 523: 145-156
- Baumann, H., Wallace, R.B., Tagliaferri, T., and Gobler, C.J. (2015)
Large natural pH, CO2 and O2 fluctuations in a temperate tidal salt marsh on diel, seasonal, and interannual time scales.
Estuaries & Coasts 38: 220-231.
- Murray, C.M.*, Malvezzi, A., Gobler, C.J., and Baumann, H. (2014)
Offspring sensitivity to ocean acidification changes seasonally in a coastal marine fish.
Marine Ecology Progress Series 504: 1-11 (Feature Article)
- Pfister, C., Esbaugh, A., Frieder, C., Baumann, H., Bockmon, E., White, M., Carter, B., Benway, H., Blanchette, C. Carrington, E., McClintock, J., McCorkle, D., McGillis, W., Mooney, T., Zivieri, P. (2014)
Detecting the unexpected: A research framework for ocean acidification.
Environmental Science & Technology 48: 9982-9994
- Wallace, R.B., Baumann, H., Grear, J., Aller, R.C., and Gobler, C.J. (2014)
Coastal ocean acidification: The other eutrophication problem.
Estuarine, Coastal, and Shelf Science 148: 1-13
- Gobler, C.J., Depasquale, E., Griffith, A., and Baumann, H. (2014)
Hypoxia and acidification have additive and synergistic negative effects on the growth, survivial, and metamorphosis of early life stage bivalves.
PLOS ONE 9(1):e83648 | Stony Brook Press Release
- Brown, E.E., Baumann, H., and Conover D.O. (2014)
Evidence for temperature and photoperiod effects on sex determination in a fish.
Journal of Experimental Marine Biology and Ecology 461: 39-43
- Baumann, H. and Doherty, O. (2013)
Decadal changes in the world’s coastal latitudinal temperature gradients.
PLoS ONE 8:e67596
- Baumann, Z., Casacuberta, N., Baumann, H., MasquÃ©, P., and Fisher, N. S. (2013)
Natural and Fukushima-derived radioactivity in macroalgae and mussels along the Japanese shoreline.
Biogeosciences 10: 3809-3815
- Baumann, H., Sutherland, S.J., and McBride, R.S. (2013)
Longitudinal length back-calculations from otoliths and scales differ systematically in haddock.
Transactions of the American Fisheries Society 142: 184-192
- 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 | 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 | 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 Koester, F.W. (2012)
Recruitment processes in Baltic sprat – a re-evaluation of GLOBEC-Germany hypotheses.
Progress in Oceanography 107:61-79
- Peck, M.A., Baumann, H., Bernreuther, M., Clemmesen, C., Herrmann, J.-P., Haslob, H., Kanstinger, P., Koester, 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.
- Guenther, C.C., Temming, A., Herrman, J.-P., Huwer B., Baumann H., Clemmesen-Bockelmann, C., Moellmann, 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
- 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
- Baumann, H., Rosales-Casian, 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
- Baumann, H. and Gagliano, M. (2011)
Changing otolith:fish size ratios during settlement in two tropical damselfishes.
Helgoland Marine Research 65: 425-429
- 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
- Conover, D. O. and Baumann, H. (2009).
The role of experiments in understanding fishery-induced evolution.
Evolutionary Applications 2: 276-290
- 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
- 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
- Stransky, C., Baumann, H., Fevolden, S.-E., Harbitz, A., Hoie, 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
- Baumann, H., Peck, M.A., Goetze, 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., Groehsler, 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 Herrman, J.P. (2005)
Short-term decoupling of otolith and somatic growth induced by food level changes in postlarval Baltic sprat, Sprattus sprattus
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