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Andreas Bryhn

Andreas Bryhn


I am a researcher and project leader at SLU Aqua. My activities mainly relate to coastal water environments and include ecosystem-based management, ecosystem services, gear development, stock assessment, modelling, and green infrastructure. I am also an Academic Editor for the scientific journal PLoS One.


Supervision of thesis students 2004-

Where have all the fishes gone? Sustainability perspectives on contemporary fisheries, 2019, 2020, 2021.

Land use and watershed management to reduce eutrophication, 2017, 2018, 2019, 2020, 2021.

Aquatic environmental analysis, 2008, 2010, 2011 (incl. development of a new course).

Modelling of Aquatic Ecosystems, 2011.

Decision support systems, 2008 (incl. development of a new course).

Environmental Consequence Analysis, 2006, 2007

Distributed modelling with GIS (Geographical Information Systems), 2002, 2004, 2005, 2006.

Water Resources Management, 2004, 2005, 2006, 2009, 2010.

Aquatic Ecology, 2006.

Catchment Hydrology, 2006.

Limited tuition during various other courses.


Positions (selected)

Senior researcher, Swedish University of Agricultural Sciences, Dept of Aquatic Resources, 2012-

Assistant Professor, Uppsala University, Dept of Earth Sciences, 2008-2012

Postgraduate position, Uppsala University, Dept of Earth Sciences, 2004-2008 

Academic degrees and appointments:

Senior Lecturer in Earth Sciences, Uppsala University, 2011.
PhD, Environmental Analysis, Uppsala University, 2008.
MA, Economics, Uppsala University, 2007.
MSc, Environmental and Aquatic Engineering, Uppsala University, 2002.

Prizes and Awards

The Tomasz Jóźwiak Award 2019 by Oceanological and Hydrobiological Studies.

The Linnaeus Prize 2009 by the Royal Society of Science.


Five PhD students through their dissertations.

> 10 undergraduate thesis students at the basic or advanced level.

Selected publications

Peer-reviewed research articles

45. Bryhn, A.C., Sara Bergek, Ulf Bergström, Michele Casini, Elin Dahlgren, Caroline Ek, Joakim Hjelm, Sara Königson, Peter Ljungberg, Karl Lundström, Sven Gunnar Lunneryd, Maria Ovegård, Mattias Sköld, Daniel Valentinsson, Francesca Vitale, Håkan Wennhage. 2022. Which factors can affect the productivity and dynamics of cod stocks in the Baltic Sea, Kattegat and Skagerrak? Ocean & Coastal Management 223, 106154.

44. Bryhn, A.C., Grände, A., Setzer, M., Johansson, K.-M., Bergström, L. 2021. Ecosystem-based fisheries management is attainable, affordable, and should be viewed as a long-term commitment: Experiences from Lake Vättern, Sweden. Journal of Great Lakes Research, 47: 1437-1445.

43. Belgrano A, Novaglio C, Svedäng H, Villasante S, Melián CJ, Blenckner T, Bergström U, Bryhn A, Bergström L, Bartolino V, Sköld M, Tomczak M, Wikström SA, Hansen AS, Linke S, Emmerson R, Morf A and Tönnesson K. 2021. Mapping and evaluating Marine Protected Areas and Ecosystem Services: a transdisciplinary Delphi Forecasting process framework. Frontiers in Ecology and Evolution, 9:652492.

42. Haapasaari, P., Ignatius, S., Pihlajamäki, M., Bryhn, A., Sarkki, S., Tuomisto, J., Nevalainen, L., Lehikoinen, A., Assmuth, T., Romakkaniemi, A., Peltonen, H., Kuikka, S. 2021. Integrated governance for managing multidimensional problems: potentials, challenges, and arrangements. Marine Policy, 104276.

41. Bryhn, A.C., Kraufvelin, P., Bergström, U., Vretborn, M., Bergström, L., 2020. A model for disentangling dependencies and impacts among human activities and marine ecosystem services. Environmental Management 65, 575-586.

40. Hanson, N., Larsson, Å., Parkkonen, J., Faxneld, S., Nyberg, E., Bignert, A., Ek, E., Bryhn, A., Olsson, J., Karlsson, A. M.L., Förlin, L., 2020. Ecological changes as a plausible explanation for differences in uptake of contaminants between European perch and eelpout in a coastal area of the Baltic Sea. Environmental Toxicology and Pharmacology 80, 103455.

39. Karlsson, O.M., Bryhn, A.C., Håkanson, L., Hållén, J., Jonsson, P., Malmaeus, J.M., Rydin, E., 2019. On the role of sedimentological processes controlling phosphorus burial in the coastal zone of the Baltic Sea. Limnology and Oceanography 64,1828-1831.

38. Lehikoinen, A., Olsson, J., Bergström, L., Bergström, U., Bryhn, A.C., Fredriksson, R., Uusitalo, L., 2019. Evaluating complex relationships between ecological indicators and environmental factors in the Baltic Sea: A machine learning approach. Ecological Indicators, 101: 117-125.

37. Stankova, B., Tvrzicka, E., Bayerova, H., Bryhn, A. C., Bryhn, M., 2018. Herring oil intake results in increased levels of omega-3 fatty acids in erythrocytes in an urban population in the Czech Republic. Archives of Medical Science: Civilization Diseases, 3: e3–e9.

36. Pastuszak, M., Bryhn, A. C., Håkanson, L., Stålnacke, P., Zalewski, M., Wodzinowski, T., 2018. Reduction of nutrient emission from Polish territory into the Baltic Sea (1988–2014) confronted with real environmental needs and international requirements. Oceanological and Hydrobiological Studies, 47: 140-166.

35. Bryhn, A. C., Lundström, K., Johansson, A., Ragnarsson Stabo, H., Svedäng, H., 2017. A continuous involvement of stakeholders promotes the Ecosystem Approach to Fisheries in the 8-fjords area on the Swedish west coast. ICES Journal of Marine Science, 74: 431–442.

34. Bryhn, A. C., Dimberg, P. H., Bergström, L., Fredriksson, R. E., Mattila, J., Bergström, U., 2017. External nutrient loading from land, sea and atmosphere to all 656 Swedish coastal water bodies. Marine Pollution Bulletin, 114: 664-670..

33. Dimberg, P. H., Bryhn, A. C., 2015. Predicting total nitrogen, total phosphorus, total organic carbon, dissolved oxygen and iron in deep waters of Swedish lakes. Environmental Modeling & Assessment, 20: 411–423.

32. Bryhn, A. C., Königson, S., Lunneryd, S.-G.,Bergenius, M. A. J., 2014. Green lamps as visual stimuli affect the catch efficiency of floating cod (Gadus morhua) pots in the Baltic Sea. Fisheries Research, 157: 187–192.

31. Bryhn, A. C., Andersson, J., Petersson, E., 2014. Mortality of European glass eel (Anguilla anguilla juveniles) at a nuclear power plant. International Review of Hydrobiology, 99: 312–316.

30. Dimberg, P. H.,Bryhn, A. C., 2014. Quantifying water retention time in non-tidal coastal waters using statistical and mass balance models. Water, Air, & Soil Pollution, 225: 2020.

29. Dimberg, P. H.,Bryhn, A. C., 2014. Predicted effects from abatement action against eutrophication in two small bays of the Baltic Sea. Environmental Earth Sciences, 72:1191-1199.

28. Bryhn, A. C., Bergenius, M. A. J., Dimberg, P. H., Adill, A., 2013. Biomass and number of fish impinged at a nuclear power plant by the Baltic Sea. Environmental Monitoring and Assessment,185: 10073-10084.

27. Bryhn, A. C., Ragnarsson-Stabo, H., Olsson, J., 2013. Modelling the biomass of functional groups of fish in an archipelago bay of the Baltic Sea. Ecological Modelling, 269: 86-97.

26. Yi, P., Chen, X. G., Bao, D. X., Qian, R. Z., Aldahan, A., Possnert, G., Bryhn, A. C., Gu, T. F., Hou, X. L., He, P., Yu, Z. B., Wang, B., 2013. Model simulation of inflow water to the Baltic Sea based on 129I. Applied Radiation and Isotopes, 82: 223–231.

25. Dimberg, P. H., Bryhn, A. C., Hytteborn, J., 2013. Probabilities of monthly median chlorophyll-a concentrations in subarctic, temperate and subtropical lakes. Environmental Modelling & Software, 41: 199–209.

24. Yi, P., Possnert, G., Aldahan, A., Hou, X. L., Bryhn, A. C., He, P., 2013. 129I in the Baltic Proper and Bothnian Sea: application for estimation of water exchange and environmental impact. Journal of Environmental Radioactivity, 120: 64–72.

23. Bryhn, A. C., 2012. Estimated trophic state effects and abatement costs in connection with improved urban sewage treatment in the Gulf of Riga. Journal of Environmental Engineering, 138: 663–672.

22. Dimberg, P. H., Hytteborn, J., Bryhn, A. C., 2012. Predicting median monthly chlorophyll-a concentrations. Limnologica, 43: 169–176.

21. Bryhn, A. C., Håkanson, L., 2011. Land uplift effects on the phosphorus cycle of the Baltic Sea. Environmental Earth Sciences, 62: 1761-1770.

20. Bryhn, A. C., Dimberg, P. H., 2011. An operational definition of a statistically meaningful trend. PLoS One, 6:  e19241.

19. Jiménez, A., Mateos, A., Bryhn, A. C., 2011. Selecting intervention strategies against eutrophication and the drastic decrease in bird abundance in Ringkøbing Fjord. TOP, 19: 448-463.

18. Bryhn, A. C., 2010. Trends in total phosphorus loadings and concentrations regarding surface waters of the Baltic Sea, 1968-2007. The Open Oceanography Journal 4: 1-8.

17. Bryhn, A. C., Girel, C., Paolini, G., Jacquet, S., 2010. Predicting future effects from nutrient abatement and climate change on phosphorus concentrations in Lake Bourget, France. Ecological Modelling, 221: 1440-1450.

16. Bryhn, A. C. och Håkanson, L., 2009. Eutrophication: model before acting. Science, 324: 723.

15. Bryhn, A. C., 2009. Sustainable phosphorus loadings from effective and cost-effective phosphorus management around the Baltic Sea. PLoS ONE, 4: e5417.

14. Bryhn, A. C., 2009. A morphometrically based method for predicting water layer boundaries in meromictic lakes. Hydrobiologia 636: 413-419.

13. Bryhn, A. C., Jiménez, A., Mateos, A., Ríos-Insua, S., 2009. Multi-attribute analysis of trophic state and waterfowl management in Ringkøbing Fjord, Denmark. Journal of Environmental Management, 90:2568-2577.

12. Håkanson, L., Hytteborn, J., Bryhn, A. C., 2009. A new general approach to quantify nitrogen fixation exemplified for the Baltic Proper. The Open Marine Biology Journal, 3: 36-48.

11. Bryhn , A. C., Håkanson, L., 2008. Coastal eutrophication: whether N and/or P should be abated depends on the dynamic mass balance. PNAS, 106: E3.

10. Håkanson, L., Bryhn, A. C., 2008. A dynamic mass-balance model for phosphorus in lakes with a focus on criteria for applicability and boundary conditions. Water, Air, & Soil Pollution, 187: 119-147.

9. Håkanson, L., A. C. Bryhn, 2008. Goals and remedial strategies for water quality and wildlife management in a coastal lagoon - a case-study of Ringkøbing Fjord, Denmark. Journal of Environmental Management, 86 :498-519.

8. Håkanson, L., A. C. Bryhn, 2008. Modeling the foodweb in coastal areas: a case study of Ringkøbing Fjord, Denmark. Ecological Research, 23: 421-444.

7. Bryhn, A. C., Håkanson, L., 2007.  A Comparison of Predictive Phosphorus Load-Concentration Models for Lakes. Ecosystems, 10: 1084-1099.

6. Bryhn, A. C., T. Blenckner, 2007. Can nitrogen gas be deficient for nitrogen fixation in lakes? Ecological Modelling, 202: 362-372.

5. Bryhn, A. C., Hessen, D. O., Blenckner, T., 2007. Predicting particulate pools of nitrogen, phosphorus and organic carbon in lakes. Aquatic Sciences, 69: 484-494.

4. Håkanson, L., Bryhn, A. C., T. Blenckner, 2007. Operational Effect Variables and Functional Ecosystem Classifications - a Review on Empirical Models for Aquatic Systems along a Salinity Gradient. International Review of Hydrobiology, 92: 326-357.

3. Håkanson, L., Bryhn, A. C., and Hytteborn, J., 2007. On the issue of limiting nutrient and predictions of cyanobacteria in aquatic systems. Science of the Total Environment, 379: 89-108.

2. Håkanson, L., Bryhn, A. C., Eklund, J. M., 2007. Modelling phosphorus and suspended particulate matter in Ringkøbing Fjord in order to understand regime shifts. Journal of Marine Systems,68: 65-90.

1. Håkanson, L., Blenckner, T., Bryhn, A. C., Hellström, S.-S., 2005. The influence of calcium on the chlorophyll–phosphorus relationship and lake Secchi depths. Hydrobiologia 537: 111-123.


Books, book chapters and dissertations

Bryhn, M., Bryhn, A. C., 2019. Herring - oceans' silver. Scholars' Press, Riga.

Håkanson, L. and Bryhn, A. C., 2011. Controlling eutrophication in the Baltic Sea and the Kattegat. In: Ansari, A. A., et al. (eds.), Eutrophication: causes, consequences, control. Springer, Dordrecht, pp. 17-67.

Håkanson, L., Ragnarsson Stabo, H., Bryhn, A. C., 2010. The fish production potential of the Baltic Sea. Springer, Berlin/Heidelberg, 396 p.

Bryhn, A. C., Sessa, C., Håkanson, L., 2010. Costs, ecosystem benefits and policy implications of remedial measures to combat coastal eutrophication: a framework for analyses and a practical example related to the Gulf of Riga. In: Webber, C. D. (ed.), Eutrophication: Ecological Effects, Sources, Prevention and Reversal. Nova Publishers, Hauppage, pp. 103-134.

Bryhn, A. C., 2008. Quantitative understanding and prediction of lake eutrophication. PhD Thesis, Department of Earth Sciences, Uppsala Univerity.

Håkanson, L. and Bryhn, A. C., 2008. Eutrophication in the Baltic Sea – present situation, nutrient transport processes, remedial strategies. - Springer, Berlin/Heidelberg, 261 p.

Håkanson, L. and Bryhn, A. C., 2008. Tools and Criteria for Sustainable Coastal Ecosystem Management. Examples from the Baltic Sea and Other Aquatic Systems. Springer, Berlin, 292 p.


Other publications

Bryhn, A.C. 2022. Participatory, holistic management of great lakes: Experiences from Lake Vättern, Sweden. Lakes Letters 1/2022, p. 15.

Kraufvelin, P., Bryhn, A., Olsson, J. 2021. Erfarenheter av ekologisk restaurering i kust och hav (Experiences from ecological restoration in coastal waters and seas). HaV-rapport. HaV, Göteborg (in Swedish).

Kraufvelin, P., Bryhn, A., Olsson, J. 2021. Fysisk påverkan i kusten och effekter på ekosystemen (Physical pressures along the coast and effects on ecosystems). HaV-rapport. HaV, Göteborg (in Swedish).

ICES m.fl., 2016, 2017, 2018, 2019, 2020, 2021. Report of the Joint EIFAAC/ICES/GFCM Working Group on Eels (WGEEL). ICES, Köpenhamn.

Dekker, W., van Gemert, R., Bryhn, A. m.fl. 2021. Assessment of the eel stock in Sweden, spring 2021; Fourth post-evaluation of the Swedish eel management. Aqua reports 2021:12. SLU, Drottningholm.

Kraufvelin, P., Olsson, J., Bergström, U., Bryhn, A., Bergström, L. 2021. Restoration measures for coastal habitats in the Baltic Sea: cost-efficiency and areas of highest significance and need. HELCOM ACTION Report. HELCOM, Helsinki.

Bryhn, A. et al. 2020. Kunskapsunderlag om möjliga icketorskfiskerelaterade åtgärder för att torskbestånd ska
bevaras och återhämta sig i svenska vatten (Knowledge base on possible non-cod fishing related measures to conserve and restore cod stocks in Swedish waters). PM. SLU, Öregrund (in Swedish).

Wikström, S.A., Bryhn, A. et al. 2020. Ekosystemansatsen – praktiska erfarenheter från svensk havs- och vattenförvaltning (The ecosystem approach - practical experiences from Swedish marine and water management). Rapport 6934. Naturvårdsverket, Stockholm.

Bryhn, A. et al., 2018. State-of-the-art, case-studies, methods and tools for ecosystem-based fisheries management. Aqua Reports, 2018:20. SLU, Öregrund (in Swedish).

Bryhn, A., et al., 2018. Biological recipient control at the Oskarshamn nuclear power plant. Aqua reports 2018:8. SLU, Figeholm (in Swedish).

Adill, A., Bryhn, A., Karlsson, E., 2018. Biological recipient control at the Forsmark nuclear power plant. Summarised results from investigations until 2017. Aqua reports 2018:14. SLU, Öregrund (in Swedish).

Bryhn, A., et al., 2018. SLU Aqua’s knowledge provision and advice as support for an ecosystem-based fisheries management. Aqua reports 2018:1. SLU, Öregrund (in Swedish).

Dekker, W., Bryhn, A. m.fl., 2018. Assessment of the eel stock in Sweden, spring 2018. Third post-evaluation of the Swedish Eel Management Plan. Aqua reports 2018:16. SLU, Drottningholm.

Bryhn, A., m.fl., 2017. Biological recipient control at the Oskarshamn nuclear power plant. Aqua Reports 2017: 4. SLU, Figeholm (in Swedish).

Bergek, S., Sandin, L., Tomband, F., Holén, E., Bryhn, A., 2017. Ecosystem services from Swedish lakes and watercourses. Report 2017:7. Havs- och vattenmyndigheten, Göteborg (in Swedish).

Andersson, J., Bryhn, A. et al., 2016. Biological recipient control at the Oskarshamn nuclear power plant. Aqua Reports 2016:6. SLU, Figeholm (in Swedish).

Andersson, J., Bryhn, A. et al., 2016. Biologisk recipientkontroll vid Oskarshamns kärnkraftverk. Sammanfattande resultat av undersökningar fram till år 2014. Aqua reports 2016:3. SLU, Figeholm (in Swedish).

Bryhn, A. m. fl., 2015. Ecosystem services from Swedish seas. Status och pressures. Rapport 2015:12. Havs- och vattenmyndigheten, Göteborg (in Swedish).

Bryhn, A. C., 2012. Fish losses in Swedish nuclear power plants. AQUA Reports 2012:10. Swedish University of Agricultural Sciences, Öregrund (in Swedish).


Researcher at the Department of Aquatic Resources; Ecosystem analysis
Telephone: +46104784152
Postal address:
Kustlaboratoriet, Skolgatan 6
Visiting address: Skolgatan 6, Öregrund