Vortragsreihe Ökologie und Umweltforschung WS 2022/23

Alle Termine
Dr. Muammar Mansor
Center for Applied Geoscience Geomicrobiology, Eberhard Karls Universität Tübingen (Homepage)
Donnerstag, 08.12.2022

Microbial-mineral interactions: Formation of pyrite and implications for biosignature and environmental research

Microbe-mineral interactions affect the biogeochemical cycling of various elements (Fe, S, C, N, P, trace metals, nutrients, contaminants), the evolution of life, and the preservation of minerals that hold clues to conditions on Earth’s past and potentially in other habitable worlds. The mineral pyrite (FeS2) in particular is prevalent in nature due to the activity of Fe- and S-cycling microbes, making them promising for applications in the field of biosignatures and environmental remediation. However, decades of research with microbial cultures have revealed difficulties in forming pyrite in the lab, despite biogenic pyrite being formed everyday in sedimentary environments on Earth. In this talk, I will present recent advances in microbially-mediated formation of pyrite and its Fe sulfide precursors (mackinawite, greigite). The role of different microbes and interrelated Fe-S chemistry in impacting pyrite formation will be discussed. Recent advances highlight the need to develop systems that better reflect the complexity of natural environments to form pyrite with properties that are relevant for environmental and geological research.
 

*** invited by Stefan Peiffer, Hydrology



Weitere Informationen:Export as iCal: Export iCal
Aktuelle Termine



Fr. 20.10.2023
Forum Waldkontroversen
BayCEER-Kolloquium:
Do. 19.10.2023
Global change mycology: Towards understanding the role of climate for fruit body-forming fungal communities
Dialog:
Fr. 06.10.2023
Forum Zukunftswald: Biotope im Wald für seltene und bedrohte Arten
Ökologisch-Botanischer Garten:
So. 15.10.2023
Führung | "Den ÖBG kennenlernen: Allgemeine Gartenführung"
Vortragsreihe "Die dünne Haut der Erde":
Mi. 11.10.2023
Mikroorganismen im Boden – Abbau von Mikroplastik und anderen Bodenverschmutzungen
Wetter Versuchsflächen
Luftdruck (356m): 980.6 hPa
Lufttemperatur: 13.4 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d

...mehr
Globalstrahlung: 286 W/m²
Lufttemperatur: 14.5 °C
Niederschlag: 0.0 mm/24h
Wind (Höhe 32m): 6.3 km/h

...mehr
Diese Webseite verwendet Cookies. weitere Informationen