Organisationsprofil

Organisationsprofil

Based on the recent calculations climate change is more rapid in the Arctic than in any other region. Previously frozen ground is thawing and releasing substantial quantities of carbon which microbes can decompose. Microbes mineralize the carbon fraction and convert it to carbon dioxide and methane. Climate change models estimate that C released from thawing arctic permafrost might represent the largest future transfer of C from the biosphere to the atmosphere resulting in a positive feedback loop. In addition to CH4 and CO2 flux, thawing permafrost releases nitrogen which can result as nitrous oxide flux, another greenhouse gas with high climate warming potential.

Our interest is in understanding how microbes in the arctic soils respond to the warming on a molecular scale and what is the function and role of the microbial communities in production of greenhouse gases in the arctic. The tools used are based on high throughput sequencing of the community DNA and RNA i.e. metagenomics and metatranscriptomics. Read more from our webpage https://www.helsinki.fi/en/researchgroups/molecular-environmental-biosciences/research/arctic-microbial-ecology

Internationellt och inhemskt samarbete Publikationer och projekt inom de senaste fem åren.

Projekt

Changing Climate Alters Microbial Community Function In Arctic Regions

Hultman, J., Viitamäki, S. & Pessi, I. S.

Helsingin yliopisto

01/01/201731/12/2019

Projekt: Helsingfors Universitetets treåriga forskningsprojekt

Publikationer

Towards an applied metaecology

Schiesari, L., Matias, M. G., Prado, P. I., Leibold, M. A., Albert, C. H., Howeth, J. G., Leroux, S. J., Pardini, R., Siqueira, T., Brancalion, P. H. S., Cabeza, M., Coutinho, R. M., Felizola Diniz-Filho, J. A., Fournier, B., Lahr, D. J. G., Lewinsohn, T. M., Martins, A., Morsello, C., Peres-Neto, P. R., Pillar, V. D. & 1 andra, Vazquez, D. P., okt 2019, I : Perspectives in ecology and conservation. 17, 4, s. 172-181 10 s.

Forskningsoutput: TidskriftsbidragÖversiktsartikelVetenskapligPeer review

Öppen tillgång
Fil

Black Queen Evolution and Trophic Interactions Determine Plasmid Survival after the Disruption of the Conjugation Network

Cairns, J., Koskinen, K., Penttinen, R., Patinen, T., Hartikainen, A., Jokela, R., Ruusulehto, L., Viitamäki, S., Mattila, S., Hiltunen, T. & Jalasvuori, M., 2 okt 2018, I : mSystems. 3, 5, 14 s., ARTN e00104-18.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Öppen tillgång
Fil

Community structure and distribution of benthic cyanobacteria in Antarctic lacustrine microbial mats

Pessi, I. S., Lara, Y., Durieu, B., Maalouf, P. D. C., Verleyen, E. & Wilmotte, A., maj 2018, I : FEMS Microbiology Ecology. 94, 5, 13 s., 042.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Construction and characterization of synthetic bacterial community for experimental ecology and evolution

Cairns, J., Jokela, R., Hultman, J., Tamminen, M., Virta, M. & Hiltunen, T., 14 aug 2018, I : Frontiers in Genetics. 9, 12 s., 312.

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Öppen tillgång
Fil
Öppen tillgång
Fil

Aktiviteter

  • 8 Arrangemang av och deltagande i konferens/workshop/kurs/seminarium
  • 8 !!Oral presentation
  • 3 !!Invited talk
  • 2 Akademisk besök på annan institution

Medical University Graz

Sirja Viitamäki (Besökande forskare), & Igor S Pessi (Besökande forskare)

10 apr 201918 apr 2019

Aktivitet: Typer för besök till extern institutionAkademisk besök på annan institution

Meta-omics investigation of soil communities in the Finnish Arctic tundra

Igor S Pessi (!!Speaker)

8 feb 2019

Aktivitet: Typer för tal eller presentation!!Oral presentation

Functions and activity of soil microbial communities in the changing Arctic

Sirja Viitamäki (!!Speaker)

4 mar 2019

Aktivitet: Typer för tal eller presentation!!Oral presentation

15th Symposium on Bacterial Genetics and Ecology

Sirja Viitamäki (Poster presentation)

26 maj 201930 maj 2019

Aktivitet: Typer för deltagande i eller organisering av evenemangArrangemang av och deltagande i konferens/workshop/kurs/seminarium

Antibioottiresistenssi-ilta 2019

Merja Rantala (Talare: Inledningsanförande (keynote)), , Marko Virta (Talare: Opponent/debattör), , Salla Sariola (Talare: Opponent/debattör), , Mari Kanerva (Talare: Opponent/debattör), , Sirja Viitamäki (Ordförande), , Jesse Vänttinen (Talare: Presentation), , Minna Maunula (Ordförande i organisationskommitté), & Anniina Sarekoski (Medlem i organisationskommitté)

15 nov 2019

Aktivitet: Typer för deltagande i eller organisering av evenemangArrangemang av och deltagande i konferens/workshop/kurs/seminarium

Tidningsurklipp