Author

Ivan Mammarella

University of HelsinkiORCID 0000-0002-8516-3356Unclaimed ORCID profile · follow to get notified of new preprints

Biology Disciplines

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Ecology· 1 Microbiology· 1

Signature Assays, Organisms & Methods

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Research Focus:ecology & biodiversity· 2 Approach:statistical model· 2 Assay:metagenomics· 1

Frequent Co-Authors

Maija E. MarushchakiD· 2 shared Mathias GoeckedeiD· 2 shared Abhishek ChatterjeeiD· 1 shared Achim GrelleiD· 1 shared Albertus Johannes DolmaniD· 1 shared Andrej VarlaginiD· 1 shared Anna‐Maria VirkkalaiD· 1 shared Arden L. BurrelliD· 1 shared

Activity by Year

2025-2025 · peak 2/yr

Co-Author Collaboration Network

10 top collaborators · 45 mutual co-author links

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2 shared papersMicrobiology

Maija E. MarushchakORCID

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2 papers

Recent·Most cited

Denitrifier activity drives diurnal N2O flux dynamics in a thawing arctic permafrost

Dhiraj Paul, Wasi Hashmi, Nathalie Ylenia Triches, Matěj Znamínko, Henri M. P. Siljanen, Ivan Mammarella, Sara Hallin, Mathias Goeckede, Christina Biasi, Maija E. Marushchak

The paper links diurnal N2O flux patterns in thawing arctic permafrost to microbial activity, showing that denitrifier genes are transcriptionally active and drive N2O dynamics.

bioRxiv · Nov 4, 2025 · PreprintMicrobiology

An increasing Arctic-boreal CO2 sink offset by wildfires and source regions

Anna‐Maria Virkkala, Brendan M. Rogers, Jennifer D. Watts, Kyle A. Arndt, Stefano Potter, Isabel K. Wargowsky, Edward A. G. Schuur, Craig R. See, Marguerite Mauritz, Julia Boike, Marion Syndonia Bret-Harte, Eleanor Burke, Arden L. Burrell, Namyi Chae, Abhishek Chatterjee, , Susan M. Natali

The paper shows the Arctic-Boreal Zone was an increasing CO2 sink from 2001-2020, but fire emissions offset this trend, making the region's overall sink statistically insignificant.

Nature Climate Change · Jan 21, 2025Peer-reviewedEcology