Tatjana Živković

Dr. Tatjana (Tanja) Živković

Postdoctoral Researcher

PhD in Geography at McGill University (Montreal, Canada) 
   Biological nitrogen fixation in ombrotrophic peatlands
MSc in Biology at Villanova University (Pennsylvania, USA) 
   Inputs of nitrogen to boreal bogs of northern Alberta, Canada: The importance of biological N₂ fixation.
BSc in Biology at Villanova University (Pennsylvania, USA)
   Impacts of rising sea levels and salinity intrusion on the metabolic activity and community composition of sulfate reducing bacteria in tidal freshwater marsh sediments

Research

My research integrates biogeochemistry and ecosystem ecology to study nutrient cycling in terrestrial and aquatic ecosystems. I have been fascinated by biological nitrogen fixation and symbiotic relationships between plants and diazotrophic microbes in peatlands. During my doctoral and postdoctoral work, I studied abiotic and biotic drivers of nitrogen fixation in Sphagnum-diazotrophic associations in the context of global and climate change. My current research focuses on N₂ fixation and diazotrophs community composition across the water column in the meromictic Powell Lake (BC). Most recently, I have also been investigating potential effects of Ocean Alkalinity Enhancement (OAE) on the marine microbiome.

Publications

Norby RJ, Baxter T, Živković T, Weston DJ. 2023. Shading contributes to Sphagnum decline in response to warming. Ecology and Evolution, 13(9), e10542.

Piatkowski BT, Carper DL, Carrell AA, ..., Živković T, Weston DJ. 2022. Draft Metagenome Sequences of the Sphagnum (Peat Moss) Microbiome from Ambient and Warmed Environments across Europe. Microbiology Resource Announcements. e00400-22.

Helbig M, Živković T, Alekseychik P. et al. 2022. Warming response of peatland CO₂ sink is sensitive to seasonality in warming trends. Nature Climate Change. 

Živković T, Helbig M, Moore TR. 2022. Seasonal and spatial variability of biological N₂ fixation in a cool temperate bog. Journal of Geophysical Research: Biogeosciences, 127:e2021JG006481.
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Živković T, Disney K, Moore TR. 2017. Variations in nitrogen and phosphorus and δ¹⁵N of Sphagnum mosses along a climatic and atmospheric deposition gradient, eastern Canada. Botany, 95:829-839.

Kearns PJ, Weston NB, Bowen JL, Živković T, Vile MA. 2016. Tidal freshwater marshes harbor phylogentically unique clades of sulfate reducers that are resistant to climate-change induced salinity intrusion. Estuaries and Coasts. DOI 10.1007/s12237-016-0067-3.
 
Vile MA, Wieder RK, Živković T, Scott KD, Vitt DH, Hartsock JA, ...Wykoff DD. 2014. N₂-fixation by methanotrophs sustains carbon and nitrogen accumulation in pristine peatlands. Biogeochemistry, 121:317-328.
 
Prša* T. Climate change under the microscope: How will sea-level rise impact microbes in Delaware River marsh soils. 2010. Delaware Estuary Newsletter. Vol. 20 (2) (non-peer reviewed article, *former last name).