Mashita (Nina) Chiewattanakul
- Office Number: W409
- Telephone: +44 (0)117 3388486
- Fax: +44 (0)117 925 1295
- Email: firstname.lastname@example.org
I graduated from the University of Bristol in 2017 with a BSc (Hons) in Chemistry. My final year research project was completed in the OGU under the supervision of Dr. Jens Holtvoeth and Professor Richard Pancost. The lab-based project was titled ‘Geochemical fingerprinting of modern organic matter sources in the Ohrid Basin’; while the literature review focused on biomarker applications for the conservation and monitoring of lake ecosystem services.
In November 2017, I returned to Bristol – and the OGU – for a MSc by Research degree in Chemistry, supervised by Professor Richard Evershed. My current project is looking towards the development of a new 15N2-stable isotope probing method for the quantification of biological nitrogen fixation in soils.
Nitrogen (N) is one of the key nutrients vital for the survival of all living organisms. However, despite its high abundance in the atmosphere, N is frequently a limiting factor for crop productivity. For N to be available to primary producers, it must undergo transformations such as nitrogen fixation – which converts atmospheric N2 into biologically available N. This process is carried out by diazotrophs that may be found free-living in soils, or forming symbiotic associations with various plants, fungi, and roots.
As a part of SPECTRA (Soil Processes and Ecological Services in the Karst Critical Zone of Southwest China), my research aims to develop a new 15N2-stable isotope probing method for determining nitrogen fixation in soils. It will be adapted as a novel method to assay nitrogen fixation and used to provide previously unobtainable quantitative information on N2 capture and flow in agricultural and semi-natural soils.