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Malin Olofsson

Malin Olofsson
Marine biologist focusing on phytoplankton-bacteria interactions and nutrient fluxes. My research questions adress phytoplankton-bacteria interactions and nutrient fluxes using secondary ion mass spectroscopy (SIMS), transcriptomics, and metabolomics. I have studied a diverse range of phytoplankton from filamentous nitrogen fixing cyanobacteria to diatoms and dinoflagellates.


I recieved my PhD in Marine Sciences at the University of Gothenburg in June 2018. During 2018-2019 I worked as a researcher at SMHI. From July 2019 until 2021 I will spend my first two years of my Post Doc in Athens, GA, in the US. I will be back in Sweden for my third year suing the summer 2021. My project is about phytoplankton derived metabolites trasnferred to bacteria during various environmnetal conditions.

Selected publications

13. Olofsson M*, Hagan J*, Karlson B, Gamfeldt L (2020) Large seasonal and spatial variation in nano- and microphytoplankton diversity along a Baltic Sea – North Sea salinity gradient. Scientific Reports 10: 17666. * = contributed equally

12. Olofsson M, Klawonn I, Karlson B (2020) Nitrogen fixation estimates for the Baltic Sea indicate high rates for the previously overlooked Bothnian Sea. In press for Ambio.

11. Stenow R, Olofsson M, Robertson EK, Kourtchenko O, Whitehouse MJ, Ploug H, Godhe A. Resting stages of Skeletonema marinoi assimilate nitrogen from the ambient environment under dark, anoxic conditions. Accepted for J. Phycology.

10. Olofsson M, Suikkanen S, Kobos J, Wasmund N, Karlson B (2019) Basin-specific changes in filamentous cyanobacteria community composition across four decades in the Baltic Sea. In press for Harmful Algae. 

9.  Olofsson M,Robertson EK, Edler L, Arneborg L, Whitehouse MJ, Ploug H (2019) Nitrate and ammonium fluxes to diatoms and dinoflagellates at a single cell level in mixed field communities in the sea. Sci Rep. 9: 1424
8.  Olofsson M, Kourtchenko O, Zetsche E-M, Marchant H, Whitehouse MJ, Godhe A, Ploug H (2019) High single-cell diversity in carbon and nitrogen assimilations by a chain-forming diatom across a century. Environ Microbiol. 21(1): 142-151
7.  Olofsson M, Torstensson A, Karlberg M, Steinhoff SF, Dinasquet J, Riemann L, Chierici M, Wulff A (2019) Limited response of a spring bloom community inoculated with filamentous cyanobacteria to elevated temperature and pCO2. Bot Mar. 62(1): 3-16
6.  Wulff A, Karlberg M, Olofsson M, Torstensson A, Riemann L, Steinhoff SF, Mohlin M, Ekstrand N, Chierici M (2018) Ocean acidification and desalination: climate-driven change in a Baltic Sea summer microplanktonic community. Mar Biol 165: 63
5.  Olofsson M, Karlberg M, Lage S, Ploug H (2017) Phytoplankton community composition and primary production in the tropical tidal ecosystem, Maputo Bay (the Indian Ocean). J Sea Res. 125: 18-25
4.  Olofsson M, Egardt J, Singh A, Ploug H (2016) Inorganic phosphorus enrichments in Baltic Sea water have large effects on growth, carbon fixation and N2fixation by Nodularia spumigena. Aquat Microb Ecol 77:111-123
3.  Klawonn I, Nahar N, Walve J, Andersson B, Olofsson M,Svedén BJ, Littmann S, Whitehouse MJ, Kuypers MMM, Ploug H (2016) Cell-specific nitrogen- and carbon-fixation of cyanobacteria in a temperate marine system (Baltic Sea) Environ Microb 18(12): 4596-4609
2.  Eriander L, Infantes E, Olofsson M, Olsen J, Moksnes P-O (2016) Assessing methods for restoration of eelgrass (Zostera marinaL.) in a cold temperate region. J Exp Mar Bio Ecol 479: 76-88
1.  Olofsson M, Asplund M E, Karunasagar I, Rehnstam-Holm A-S, Godhe A (2013) Prorocentrum micanspromote and Skeletonema tropicum disfavours persistence of the pathogenic bacteria Vibrio parahaemolyticus. Indian Journal of Geo-Marine Sciences 42: 729-733


Popular Science papers

2. Malin Olofsson & Helle Ploug (2019) Kiselalgen – livsviktig överlevnadsexpert. Havsutsikt nr 2.

1. Malin Olofsson & Helle Ploug (2017) Nya metoder avslöjar cyanobakteriernas roll i Östersjön. Havsutsikt nr 1.