The Department Biogeochemical Processes explores the key processes and organisms that regulate exchanges of energy, water and elements between ecosystems and their surroundings. We use observations, experiments and models to improve understanding of how human activities are altering ecosystem function, and the consequences of those changes for sustainability and regional/global climate.
We explore several aspects of ecosystem function and how it is altered by climate and land use:
- Allocation of the products of photosynthesis among respiration, storage, growth, transfer to the rhizosphere and defense
- Factors determining the age and transit time of carbon in soils
- Links between microbial community function and the diversity of organic compounds and gases found in soils and groundwater
- Landscape scale processes such as windthrow, herbivory, and fire
- Understanding how environmental conditions are recored in the isotopic composition of biomarker molecules
Welcome to Estefanía Muñoz, who just started as a new PostDoc in the Theoretical Ecosystem Ecology group.
Welcome to Michelle Robin, who just started as a new Ph.D. student in the department.
Kasun Gayantha successfully defended his thesis on the "Multi-Proxy Reconstruction of South Asian Monsoon Variability in Sri Lanka". Congratulations!
Simon Benk successfully defended his thesis on the "Towards a data-driven understanding of Dissolved Organic Matter in the Critical Zone". Congratulations!
And welcome to two new members of the department, Frederik Lange and Maryam Moussavi. Frederik is a new Ph.D. student, who joined us earlier this year. Maryam is a data new data manager in the ATTO project, temporarily filling in for Marcus Guderle.
Welcome to all the new Ph.D. students, who joined as over the last several months. They are Beatrix Heinze, Akanksha Rai, Linda Lemanski, Andres Tangarife and De Shorn Bramble. We hope you had a good start even under these circumstances and will have a good time here with us!
Congratulations to Holger Metzler, who successfully defended his thesis on the "Compartmental systems as Markov chains: age, transit time, and entropy". Fortuntaly, the defense could take place in person, albeit closed to the public.
Alice Orme is a new PhD student in the Molecular Biogeochemistry group of Gerd Gleixner. For her thesis, she will focus on "Decoding the molecular signals of dissolved organic matter". Welcome, Alice!
April 9, 2019:
Michelle Robin, Master student at the Instituto Nacional de Pesquisas da Amazônia (INPA), is currently visiting the institute. She studies VOCs within the ATTO project under the supervision of Eliane Gomes-Alves. Michelle will be here until May 19th and is staying in office B1.019. Welcome!
January 18, 2019:
Members from our department are convening or co-convening sessions at this years EGU 2019 general assembly. They are:
|1||Zhang, X., Xu, B., Günther, F., Gleixner, G. (2021). Seasonal variation of leaf wax n-alkane delta2H values: Differences between Quercus aquifolioides (an evergreen tree) and Stipa bungeana (a perennial grass) from the southeastern Tibetan Plateau. Global and Planetary Change, 207: 103674. doi:10.1016/j.gloplacha.2021.103674.|
|2||Beem-Miller, J., Schrumpf, M., Hoyt, A. M., Guggenberger, G., Trumbore, S. E. (2021). Impacts of drying and rewetting on the radiocarbon signature of respired CO2 and implications for incubating archived soils. Journal of Geophysical Research: Biogeosciences, 126(9): e2020JG006119. doi:10.1029/2020JG006119.|
|3||Zhao, J., Malone, S. L., Staudhammer, C. L., Starr, G., Hartmann, H., Oberbauer, S. F. (2021). Freshwater wetland plants respond nonlinearly to inundation over a sustained period. American Journal of Botany. doi:10.1002/ajb2.1746.|
|4||Bukombe, B., Fiener, P., Hoyt, A. M., Kidinda, L. K., Doetterl, S. (2021). Heterotrophic soil respiration and carbon cycling in geochemically distinct African tropical forest soils. Soil, 7(2), 639-659. doi:10.5194/soil-7-639-2021.|
|5||Botia, S., Komiya, S., Marshall, J., Koch, T., Galkowski, M., Lavric, J. V., Gomes-Alves, E., Walter, D., Fisch, G., Pinho, D. M., Nelson, B., Martins, G., Luijkx, I. T., Koren, G., Florentie, L., de Araujo, A. C., Sa, M., Andreae, M. O., Heimann, M., Peters, W., Gerbig, C. (2021). The CO2 record at the Amazon Tall Tower Observatory: a new opportunity to study processes on seasonal and inter-annual scales. Global Change Biology, 131: 103622. doi:10.1111/gcb.15905.|