Kaisa Lehosmaa

Kaisa Lehosmaa


Postdoctoral Researcher


I am freshwater ecologist currently working as a PostDoc researcher at the Ecology and Genetics research Unit. My research interests focus on microbial ecology of freshwater and soil, particularly in those affected by land use and/or high concentrations of contaminants such as nutrients, metals and metalloids. I’m especially interested in the community-level changes of microbes under anthropogenic pressure using modern molecular techniques. Also, plant-microbe interactions of species adapted to contaminated i.e. extreme environments and the role of their symbiotic microbes in accumulating contaminants is an interesting field of research. Bioremediation potential of arctic microbes and plants, as well as their combinations, are studied in two ongoing projects: HybArkt and the moss Warnstorfia fluitans and its microbial symbionts for phytoremediation of mining and municipal wastewaters.

Research interests

  • Environmental microbiology
  • Aquatic microbial ecology
  • Molecular biology
  • Plant-associated microbes
  • Biotechnology

Research groups

Stream ecology research group


Host-Microbe Interactions



Social media

Research groups

  • Stream Ecology Research Group
  • Host-Microbe Interactions

Selected publications

  • Lehosmaa, Kaisa; Jyväsjärvi, Jussi; Ilmonen, Jari; Rossi, Pekka M.; Paasivirta, Lauri; Muotka, Timo (2018) Groundwater contamination and land drainage induce divergent responses in boreal spring ecosystems. - Science of the total environment 639, 100-109 . [Original]
  • Lehosmaa, Kaisa (2018) Anthropogenic impacts and restoration of boreal spring ecosystems. - Acta Universitatis Ouluensis. Series A, Scientiae rerum naturalium 711. Oulu. Artikkeliväitöskirja. 52. [Original]
  • Lehosmaa, Kaisa; Jyväsjärvi, Jussi; Virtanen, Risto; Ilmonen, Jan; Saastamoinen, Jouko; Muotka, Timo (2017) Anthropogenic habitat disturbance induces a major biodiversity change in habitat specialist bryophytes of boreal springs. - Biological conservation 215, 169-178 . [Original]
  • Lehosmaa, Kaisa; Jyväsjärvi, Jussi; Virtanen, Risto; Rossi, Pekka M.; Rados, Dimitrios; Chuzhekova, Tatiana; Markkola, Annamari; Ilmonen, Jari; Muotka, Timo (2017) Does habitat restoration enhance spring biodiversity and ecosystem functions?. - Hydrobiologia 793 (1), 161–173 . [Original]
  • Mykrä, Heikki; Sarremejane, Romain; Laamanen, Tiina; Karjalainen, Satu Maaria; Markkola, Annamari; Lehtinen, Sirkku; Lehosmaa, Kaisa; Muotka, Timo (2019) Local geology determines responses of stream producers and fungal decomposers to nutrient enrichment: A field experiment. - Ambio 48 (1), 100-110 . [Original]