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Sari Peura

Carbon is the most abundant element in all organisms and carbon cycle is one of the determining factors for the life on earth. In the boreal and arctic regions, lakes and ponds play a major role in the carbon cycle, especially as emitters of GHGs, especially CO2 and CH4. I am studying the organisms and mechanism that produce and consume these gases, as well as remobilize the carbon from long-term storage. I am studying these from the perspective of climate change and how the alterations in environmental conditions may impact the carbon cycle and the involved organisms. I am addressing this topic by combining molecular methods with biogeochemical and process analyses to get a holistic picture of the interactions between organisms, processes and the environment.

Selected publications

S Peura, M Buck, SL Aalto, SE Morales, H Nykänen, A Eiler. 2018. Novel autotrophic organisms contribute significantly to the internal carbon cycling potential of a boreal lake. mBio 9:e00916-18.

S Peura, A Eiler, S Bertilsson, H Nykänen, M Tiirola, RI Jones. 2012. Distinct and diverse anaerobic bacterial communities in boreal lakes dominated by candidate division OD1. The ISME journal 6:1640-1652. https://doi:10.1038/ismej.2012.21

C Wurzbacher, RH Nilsson, M Rautio, S Peura. 2017. Poorly known microbial taxa dominate the microbiome of permafrost thaw ponds. The ISME journal 11:1938-1941. https://doi:10.1038/ismejismej.2017.54

T Roiha, S Peura, M Cusson, M Rautio. 2016. Allochthonous carbon is a major regulator to bacterial growth and community composition in subarctic freshwaters. Scientific reports 6:34456. https://doi:10.1038/srep34456

S Peura, H Nykänen, P Kankaala, A Eiler, M Tiirola, RI Jones. 2014. Enhanced greenhouse gas emissions and changes in plankton communities following an experimental increase in organic carbon loading to a humic lake. Biogeochemistry 118:177-194. https://doi: 10.1007/s10533-013-9917-2

Full publication list in Google Scholar: