Jonna Engström-Öst


PhD, Senior Researcher

Novia University of Applied Sciences
Raseborgsvägen 9 , FI-10600 Ekenäs, FINLAND 
jonna.engstrom-ost [at]
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Research interests 

  • Marine environment changes following eutrophication and climate change
  • Consequences of ocean acidification and global warming on zooplankton

Ongoing projects

I am currently having a position as Senior researcher at Novia and work with different marine biological projects. 

Together with Anna Jansson we superwise Ella von Weissenberg on questions related to plankton and climate change. Ella focusses on eco-physiology during heatwaves and salinity decrease. 


I did my PhD in the University of Helsinki and Finnish Institute of Marine Research on cyanobacteria, zooplankton and planktivore interactions in the EZECO research group, supervised by Markku Viitasalo. Part of my post-doc, I stayed in the beautiful city of Vancouver, British Columbia. Later I was a post-doctor, funded by the Academy of Finland studying eutrophication effects on fish larve, and as Academy Research Fellow, funded by the Academy of Finland , I studied cyanobacteria-copepod interactions during climate change.


65. von Weissenberg E, Mottola G, Uurasmaa T-M , Anttila K, Engström-Öst J: Combined effect of salinity and temperature on reproductive success and oxidative stress in brackish-water copepods. Frontiers in Marine Science (in press)

64. Soulié T, Engström-Öst J, Glippa O: Copepod respiration along a brackish salinity gradient. Marine and Freshwater Behaviour and Physiology (in press)

63. von Weissenberg E, Jansson A, Vuori KA & Engström-Öst J (2022) Copepod reproductive effort and oxidative status as responses to warming in the marine environment. Ecology and Evolution 12(2): e8594.

62. Forsblom L, Lindén A, Engström-Öst J, Lehtiniemi M, Bonsdorff E (2021) Identifying biotic drivers of population dynamics in a benthic-pelagic community. Ecology and Evolution 11: 4035-4045. 

61. Jansson A, Klais R, Grinienė E, Rubene G, Semenova A, Lewandowska A & Engström-Öst J (2020) Functional shifts in estuarine zooplankton in response to climate variability. Ecology and Evolution 10:11591-11606

60. Engström-Öst J, Kanerva M, Vuori K, Riebesell U, Spisla C, & Glippa O (2020) Oxidative stress and antioxidant defence responses in two calanoid copepods under high pCO2 levels: a mesocosm study. Science of The Total Environment 745: 140600.

59. Kuismanen L, Forsblom L, Engström-Öst J, Båmstedt U & Glippa O (2020) Salinity effects on egg production, hatching and survival of Eurytemora affinis (Copepoda, Calanoida). Crustaceana 93(3-5):429-445.

58. Forsblom L, Engström-Öst J, Lehtinen S, Lips I & Lindén A (2019) Environmental variables driving species and genus level changes in annual plankton biomass. Journal of Plankton Research 41: 925-938

57. Engström-Öst J, Glippa O, Feely RA, Kanerva M, Keister JE, Alin SR, Carter BR, McLaskey AK, Vuori KA & Bednaršek N (2019) Eco-physiological responses of copepods and pteropods to ocean warming and acidification. Scientific Reports 9: 4748

56. Bednaršek N, Feely RA, Beck M, Glippa O, Kanerva M & Engström-Öst J (2018) El Niño-related thermal stress coupled with ocean acidification negatively impacts cellular to population-level responses in pteropods along the California Current System with implications for increased bioenergetic costs. Frontiers in Marine Science 5: 486.

55. Lehtiniemi M, Hartikainen S, Näkki P, Engström-Öst J, Koistinen A & Setälä O (2018) Size matters more than shape: ingestion of primary and secondary microplastics by small predators. Food webs e00097

54. Glippa O, Engström-Öst J, Kanerva M, Rein A & Vuori: K (2018) Oxidative stress and antioxidant defence responses in Acartia copepods in relation to environmental factors. PLOS ONE 13: e0195981

53. Jacobsen, L & Engström-Öst, J (2018) Coping with environments. In: (eds. Nilsson, A. & Skov, C.), Biology and ecology of pike, CRC Press. 

52. Glippa O, Brutemark A, Johnson J, Spilling K, Candolin U, Engström-Öst J (2017) Early development of the threespine stickleback larvae in relation to water pH. Frontiers in Marine Science 4:427

51. Engström-Öst, J, Barrett, NJ, Brutemark, A, Vehmaa, A, Dwyer, A, Almén, A-K, De Stasio B (2017) Feeding, survival and reproduction of two populations of Eurytemora (Copepoda) exposed to local toxic cyanobacteria. Journal of Great Lakes Research 43: 1091-1100 Abstract

50. Almén A-K, Brutemark A, Jutfelt F, Riebesell U & Engström-Öst J (2017) Ocean acidification shows no detectable effect on swimming activity and body size in a common copepod. Hydrobiologia 802: 235-243.

49.  Almén A-K, Glippa O, Pettersson H, Alenius P, Engström-Öst J (2017) Changes in wintertime pH and hydrography of the Gulf of Finland with focus on depth layers. Environmental Monitoring and Assessment 189: 147.

48. Bermúdez R, Winder M, Stuhr A, Almén A-K, Engström-Öst J, Riebesell, U (2016) Effects of ocean acidification on the structure and fatty acid composition of a natural plankton community in the Baltic Sea. Biogeosciences 13: 6625-6635.

47. Vehmaa, A, Almén A-K, Brutemark, A, Paul, A, Riebesell, U, Furuhagen, S, Engström-Öst, J (2016) Ocean acidification challenges copepod reproductive plasticity. Biogeosciences 13: 6171-6182.

46. Almén, A-K, Vehmaa, A, Brutemark, A, Bach, L, Lischka, S, Stuhr, A, Furuhagen, S, Paul, A, Bermúdez, JR, Riebesell, U, Engström-Öst, J (2016) Negligible effects of ocean acidification on Eurytemora affinis (Copepoda) offspring production. Biogeosciences 13: 1037-1048. Abstract  PDF

45. Brutemark A, Vandelannoote A, Engström-Öst J & Suikkanen S (2015) A less saline Baltic Sea promotes cyanobacterial growth, hampers microcystin production and leads to intra-specific differences in allelopathy. PLOS ONE 10: e0128904. Abstract PDF

44. Engström-Öst, J, Brutemark A, Vehmaa A, Motwani NM & Katajisto T (2015) Consequences of cyanobacteria blooms on copepod reproduction, mortality and sex ratio. Journal of Plankton Research 37: 388-398.

43. Engström-Öst J, Savatijevic Rasic I, Brutemark A, Rancken R, Subakov Simić G, Laugen AT (2015) Can Cylindrospermopsis raciborskii invade the Baltic Sea? Environmental Reviews 23: 161-169. 

42. Brutemark A, Engström-Öst, J, Vehmaa A & Gorokhova E (2015) Growth, toxicity and oxidative stress of a cultured cyanobacterium (Dolichospermum sp.) during different pH and temperature conditions. Phycological Research 63: 56-63. Abstract PDF

41. Hogfors, H., Motwani, N.H., Hajdu, S., El-Shehawy, R., Holmborn, T., Vehmaa, A., Engström-Öst, J., Brutemark, A. & Gorokhova, E. (2014) Bloom-forming cyanobacteria support copepod reproduction and development in the Baltic Sea. PLOS ONE Abstract PDF

40. Almén, A.-K., Vehmaa, A., Brutemark, A. & Engström-Öst, J. (2014) Coping with climate change? Copepods experience drastic variations in their physicochemical environment on diurnal basis. Journal of Experimental Marine Biology and Ecology 460: 120-128. Abstract

39. Engström-Öst, J., Holmborn, T., Brutemark, A., Hogfors, H., Vehmaa A. & Gorokhova, E. (2014) The effects of short-term pH decrease on the reproductive output of the copepod Acartia bifilosa – a laboratory study. Marine and Freshwater Behaviour and Physiology 47: 173-183. Abstract

38. Vehmaa, A., Hogfors, H., Gorokhova, E., Brutemark, A., Holmborn, T. & Engström-Öst, J. (2013) Projected marine climate change: effects on copepod oxidative status and reproduction. Ecology & Evolution 3: 4548-4557.    Abstract    PDF

37. Brutemark, A. & Engström-Öst, J. (2013) Does the presence of zooplankton influence growth and toxin production of Nodularia spumigena? International Review of Hydrobiology 98: 225-234. Abstract

36. Salonen, M. & Engström-Öst, J. (2013): Growth of pike larvae: effects of prey, turbidity and food quality. Hydrobiologia 717: 169-175 Abstract

35. Engström-Öst, J., Repka, S., Brutemark, A. & Nieminen, A. (2013) Clay and algae-induced effects on biomass, cell size and toxin concentration in a brackish-water cyanobacterium. Hydrobiologia 714: 85-92. Abstract

34. Suikkanen, S., Pulina, S., Engström-Öst, J., Lehtiniemi, M., Lehtinen, S. & Brutemark, A. (2013): Climate change and eutrophication induced shifts in northern summer plankton communities. PLoS One 8(6): e66475. Abstract PDF

33. Engström-Öst, J., Autio, R., Setälä, O., Sopanen, S. & Suikkanen, S. (2013): Plankton community dynamics during decay of a cyanobacteria bloom – a mesocosm experiment. Hydrobiologia 701: 25-35. Abstract

32. Vehmaa, A., Brutemark, A. & Engström-Öst, J. (2012): Maternal effects may act as an adaptation mechanism for copepods facing pH and temperature changes. PLoS One 7(10): e48538. Abstract

31. Vehmaa A, Kremp A, Tamminen T, Hogfors H, Spilling K, & Engström-Öst J (2012) Copepod reproductive success in spring-bloom communities with modified diatom and dinoflagellate dominance- ICES Journal of Marine Science 69: 351-357. Abstract

30. Ianora A, Bentley MG, Caldwell GS, Casotti R, Cembella AD, Engström-Öst J, Halsband-Lenk C, Sonnenschein E, Legrand C, Llewellyn CA, Paldavičienë A, Pilkaityte R, Pohnert G, Razinkovas A, Romano G, Tillmann U, Vaiciute D (2011) The relevance of marine chemical ecology to plankton and ecosystem function: an emerging field. - Marine Drugs 9: 1625-1648.

29. Engström-Öst J, Repka S & Mikkonen M (2011) Interactions between plankton and cyanobacterium Anabaena with focus on growth and toxin concentration. - Harmful Algae 10: 530-535. Abstract

28. Brutemark A, Engström-Öst J & Vehmaa A (2011) Long-term monitoring data reveal pH dynamics, trends and variability in the western Gulf of Finland. - Oceanological and Hydrobiological Studies 40: 91-94 PDF

27.  Vehmaa A, Larsson P, Vidoudez C, Pohnert G, Reinikainen M & Engström-Öst J (2011): How will increased dinoflagellate:diatom ratios affect copepod reproduction? A case study from the Baltic Sea. - Journal of Experimental Marine Biology and Ecology 401: 134-140. Abstract

26. Engström-Öst J, Hogfors H, El-Shehawy R, De Stasio B, Vehmaa A & Gorokhova E (2011): Toxin producing cyanobacterium Nodularia spumigena, potential competitors and grazers: testing mechanisms of reciprocal interactions. Aquatic Microbial Ecology 62: 39-48. Abstract

25. Salonen M & Engström-Öst J (2010) Prey capture of pike larvae Esox lucius in turbid water. - Journal of Fish Biology 76: 2591-2596.

24. Salonen M, Urho L & Engström-Öst J (2009) Effects of turbidity and zooplankton availability on the condition and prey selection of pike larvae. - Boreal Environment Research 14: 981-989 PDF

23. Gorokhova E & Engström-Öst J (2009) Toxin concentration in Nodularia spumigena is modulated by mesozooplankton grazers. - Journal of Plankton Research 31:1235-1247. Abstract PDF

22. Engström-Öst J, Öst, M & Yli-Renko M (2009) Balancing algal toxicity and turbidity with predation risk in the three-spined stickleback. - Journal of Experimental Marine Biology and Ecology 377: 54-59. Abstract

21. Engström-Öst J & Mattila J (2008) Foraging, growth and habitat choice in turbid water: an experimental study with fish larvae in the Baltic Sea. - Marine Ecology Progress Series 359: 275-281. Abstract

20. Candolin U, Engström-Öst J & Salesto T (2008) Human-induced eutrophication enhances reproductive success through effects on parenting ability in sticklebacks. - Oikos 117: 459-465.

19. Karjalainen M, Engström-Öst J, Korpinen S, Peltonen H, Pääkkönen J-P, Rönkkönen S, Suikkanen S & Viitasalo M (2007) Ecosystem consequences of cyanobacteria in the northern Baltic Sea. - AMBIO 36: 195-202.

18. Engström-Öst J & Candolin U (2007) Human induced water turbidity alters selection on sexual displays in sticklebacks. - Behavioral Ecology 18: 393-398. Abstract  PDF

17. Engström-Öst J, Immonen E, Candolin U & Mattila J (2007) The indirect effects of eutrophication on habitat choice and survival of fish larvae in the Baltic Sea. - Marine Biology 151: 393-400.

16. Suikkanen S, Engström-Öst J, Jokela J, Sivonen K & Viitasalo M (2006) Allelopathy of Baltic Sea cyanobacteria: no evidence for the role of nodularin. - Journal of Plankton Research 28 (6): 543-550. Abstract     PDF

15. Engström-Öst J, Karjalainen M & Viitasalo M (2006) Feeding and refuge use by small fish in the presence of cyanobacteria blooms. - Environmental Biology of Fishes 76: 109-117. Abstract PDF

14. Engström-Öst J & Isaksson I (2006) Effects of macroalgal exudates and oxygen deficiency on survival and behaviour of fish larvae. - Journal of Experimental Marine Biology and Ecology 335: 227-234. Abstract

13. Karjalainen M, Kozlowsky-Suzuki B, Lehtiniemi M, Engström-Öst J, Kankaanpää H & Viitasalo M (2006) Nodularin accumulation during cyanobacterial blooms and experimental depuration in zooplankton. - Marine Biology 148: 683-691. Abstract PDF

12. Engström-Öst J, Lehtiniemi M, Jónasdóttir SH & Viitasalo M (2005) Growth of pike larvae (Esox lucius) under different conditions of food quality and salinity. - Ecology of Freshwater Fish 14: 385-393.

11. Lehtiniemi M, Engström-Öst J & Viitasalo M (2005) Turbidity decreases anti-predator behaviour in pike larvae (Esox lucius). - Environmental Biology of Fishes 37: 1-8. Abstract PDF

10. Engström-Öst J & Lehtiniemi M (2004) Threat-sensitive predator avoidance by pike larvae. - Journal of Fish Biology 65: 251-261.

9. Kozlowsky-Suzuki B, Karjalainen M, Lehtiniemi M, Engström-Öst J, Koski M & Carlsson P (2003) Feeding, reproduction and toxin accumulation by the copepods Acartia bifilosa and Eurytemora affinis in the presence of the toxic cyanobacterium Nodularia spumigena. - Marine Ecology Progress Series 249: 237-249. Abstract PDF

8. Engström-Öst J, Lehtiniemi M, Green S, Kozlowsky-Suzuki B & Viitasalo M (2002) Does cyanobacterial toxin accumulate in mysid shrimps and fish via copepods? - Journal of Experimental Marine Biology and Ecology 276: 95-107. Abstract

7. Schmidt K, Koski M, Engström-Öst J & Atkinson A (2002) Development of Baltic Sea zooplankton in the presence of a toxic cyanobacterium: a mesocosm approach. - Journal of Plankton Research 24: 979-992. Abstract    PDF

6. Lehtiniemi M, Engström-Öst J, Karjalainen M, Kozlowsky-Suzuki B & Viitasalo M (2002) Fate of cyanobacterial toxins in the pelagic food web: transfer to copepods or to faecal pellets? - Marine Ecology Progress Series 241: 13-21. Abstract PDF

5. Engström-Öst J, Koski M, Schmidt K, Viitasalo M, Jónasdóttir SH, Kokkonen M, Repka S & Sivonen K (2002) Effects of toxic cyanobacteria on a plankton assemblage: community development during decay of Nodularia spumigena. - Marine Ecology Progress Series 232: 1-14. Abstract PDF

4. Koski M, Schmidt K, Engström-Öst J, Viitasalo, Jónasdóttir SH, Repka S & Sivonen K (2002) Calanoid copepods feed and produce eggs in the presence of toxic cyanobacteria Nodularia spumigena. - Limnology and Oceanography 47: 878-885. Abstract PDF

3. Engström J, Viherluoto M & Viitasalo M (2001) Effects of toxic and non-toxic cyanobacteria on grazing, zooplanktivory and survival of the mysid shrimp, Mysis mixta. - Journal of Experimental Marine Biology and Ecology 257: 269-280. Abstract

2. Engström J, Koski M, Viitasalo M, Reinikainen M, Repka S & Sivonen K (2000) Feeding interactions of the copepods Eurytemora affinis and Acartia bifilosa with the cyanobacteria Nodularia sp. - Journal of Plankton Research 22: 1403-1409. Abstract     PDF

1. Koski M, Engström J & Viitasalo M (1999) Reproduction and survival of the calanoid copepod Eurytemora affinis fed with toxic and non-toxic cyanobacteria. - Marine Ecology Progress Series 186:187-197. Abstract PDF