Terminplanung kommende Semester und Vortragsarchiv BayCEER Kolloquium
Fe(II) oxidation by O2 is an important process generating Fe (oxyhydr)oxides, which play sorptive, structural and electron-transfer roles in soils. These roles in turn can have strong implications for the fate of organic matter, particularly in redox-dynamic soils in which Fe oxidation events are quite common. Leveraging a variety of different experiments using surface and subsurface soils from the Calhoun and Luquillo Experimental Forests (formerly Critical Zone Observatories) we explore how the rate of Fe(II) oxidation (modulated by O2 concentration), the length of Fe(II) oxidizing conditions (i.e., amount of oxic exposure), and the presence of various surfaces and organic complexing agents during Fe oxidation have implications for organic matter mineralization and composition as well as for the evolution of Fe minerals in soils. Collectively, our data suggests that while Fe reduction is often a driver of elemental release and organic matter transformation, this process is strongly influenced by the characteristics of prior Fe(II) oxidation events.
*** invited by Prof. Stefan Peiffer, Hydrology
BayCEER-Kolloquium: |
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Do. 25.04.2024 Perspectives and challenges in the restoration and conservation of two isolated habitats: gypsum and cliffs |
BayCEER Short Courses: |
Mi. 24.04.2024 Mobile Film Making Workshop (for PhDs/PostDosc/Profs of BayCEER) |
Fr. 26.04.2024 Mobile Film Making Workshop (for students of BayCEER) |
Ökologisch-Botanischer Garten: |
So. 21.04.2024 Führung | Den ÖBG kennenlernen: Allgemeine Gartenführung |
Fr. 26.04.2024 Aktion | Kräuterreich & regional: Backkunst im ÖBG (zus. mit HWK) |