Dr. Juliane Helm
Thematic Area Environment and Society
Department of Environmental Politics
Helmholtz Centre
for Environmental Research − UFZ
Permoserstr. 15
04318 Leipzig, Germany
phone: ++49 - 341 - 60253898
juliane.helm@ufz.de
Curriculum Vitae
since 04/2025
Project Coordinator (Scientific and Administrative), Kili-SES Phase 2: The role of nature for human well-being in the Kilimanjaro Social-Ecological System, Department of Environmental Politics, Helmholtz Centre for Environmental Research, Leipzig
02/2024 − 03/2025
Project Lead and Project Team Member, Thuringian Institute for sustainability and climate change (ThINK), Jena
03/2024 − 12/2024
Scientific Project Coordinator, GreenGaDe: Greenhouse Gas Determination in West Africa’s Agricultural Landscapes, Biodiversity Research /Systematic Botany, University of Potsdam
01/2018 − 06/2023
PhD at Max Planck Institute for Biogeochemistry in Jena and University of Basel, Department Environmental Sciences, Switzerland
01/2017 − 12/2017
Employee at Eurofins Agroscience Services, Analytical Services for Agriculture, Jena
10/2013 − 10/2016
04/2015 − 07/2015
09/2014 − 02/2015
Research stay, Laboratory of Plant Physiology, Rijksuniversity Groningen, Netherlands
10/2010 − 09/2013
Publications
Salomón, R.L., Helm, J., Gessler, A., Grams, T.E.E., Hilman, B., Muhr, J., Steppe, K., Wittmann, C., Hartmann, H. (2023). The quandary of sources and sinks of CO2 efflux in tree stems – new insights and future directions. Tree Physiology, 44(1), https://doi.org/10.1093/treephys/tpad157
Helm, J., Muhr, J., Hilman, B., Kahmen, A., Schulze, E.D., Trumbore, S., Herrera-Ramirez, D., Hartmann, H. (2023). Carbon dynamics in long-term starving poplar trees - the importance of older carbohydrates and a shift to lipids during survival. Tree Physiology, 44(13), 173–185. https://doi.org/10.1093/treephys/tpad135
Helm, J., Salomón, R.L., Hilman H., Muhr J., Knohl, A., Steppe, K., Gibon, Y., Cassan, C., Hartmann, H. (2023). Differences between tree stem CO2 efflux and O2 influx rates cannot be explained by internal CO2 transport or storage in large beech trees. Plant, Cell and Environment, 46(9), 2680–2693. https://doi.org/10.1111/pce.14614
Hilman, B., Muhr, J., Helm, J., Kuhlmann, I., Schulze, E.-D., Trumbore, S. (2021). The size and the age of the metabolically active carbon in tree roots. Plant, Cell and Environment, 44(8), 2522 –2535. https://doi.org/10.1111/pce.14124
Helm, J., Hartmann, H., Göbel, M., Hilman, B., Herrera Ramirez, D., Muhr, J. (2021). Low-cost chamber design for simultaneous CO2 and O2 flux measurements between tree stems and the atmosphere. Tree Physiology, 41(9),1767 –1780. https://doi.org/10.1093/treephys/tpab022
Helm, J., Dutoit, T., Saatkamp, A., Bucher, S.F., Leiterer, M., Römermann, C. (2018). Recovery of Mediterranean steppe vegetation after cultivation: legacy effects on plant composition, soil properties and functional traits. Applied Vegetation Science, 22(1), 71 –84. https://doi.org/10.1111/avsc.12415
Reich, M., Aghajanzadeh, T., Helm, J., Parmar, S., Hawkesford, M., and De Kok, L. (2017). Chloride and sulfate salinity differently affect biomass, mineral nutrient composition and expression of sulfate transport and assimilation genes in Brassica rapa. Plant and Soil, 411(1), 319 –332. https://link.springer.com/article/10.1007/s11104-016-3026-7