Johann Holdt

Research focus
I am currently a PhD candidate with focus on environmental geosciences. In the frame of an interuniversity collaboration research project (see below and here), I am investigating the sedimentology and organic geochemistry of floodplain aquifers to predict nitrate reduction potentials. My research is critically important for fundamental questions related to nitrate groundwater pollution and management strategies.

Short curriculum
Since 2023:
PhD candidate University of Göttingen / University of Tübingen, Germany
Topic: Linking Redox-Cycling to Hydrogeology: Sedimentological Controls on the Capacity of Aquifers to Reduce Nitrate and other Dissolved Electron Acceptors.
(collaboration between the Universities of Göttingen, Kassel, Tübingen and Vienna)

Graduate student (M.Sc.), Geosciences, University of Göttingen, Germany
MSc Thesis: “Seasonal and spatial dynamics of hydrogeochemical parameters of Lake Stechlin (Brandenburg) under the influence of increasing eutrophication”
(collaboration with the Leibniz Institute of Freshwater Ecology and Inland Fisheries Berlin)

Undergraduate student (B.Sc.), Geosciences, University of Göttingen, Germany
BSc Thesis: “Assessing fingerprints of early Archean life in barite and chert of the ca. 3.5 Ga Dresser Formation, Western Australia – a geobiological approach”