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Individual student activities at HADAL

Effects of temperature on the microbial driven enzymatic processes in sediment.

  • Project type: Research project , 10 ECTS
  • Student: Silje Waaler Pedersen
  • Supervisor(s): Ronnie N. Glud & John Paul Balmonte
  • Start: 1. september 2021
  • End: 31. januar 2022

My current research aim is to investigate the effects of temperature on microbial driven enzymatic processes  in sediments. Temperature is one of many factors affecting the activity of enzymes. Dynamics in temperature,  is expected to play an important role in degradation of organic matter in sediments. Not only will I look at enzyme activity in whole microbial communities but also on extracted enzyme assays from the same communities. Thereby the relative importance of cellular processes versus pure enzyme kinetics for the community response towards temperature dynamics can be assessed.


Effects of hydrostatic pressure on microbial activity with particular focus on anaerobic heterotrophic carbon degradation

  • Project type: Internship
    Student: Louis Quichaud
    Supervisor: Ronnie N. Glud
    Start: 8. February 2021
    End: 11. June 2021

Bacteria in Hadal trenches are known to degrade organic matter in aerobic conditions (using oxygen). However, it has recently been shown that some bacteria in the trenches can also produce their energy in anaerobic conditions (without oxygen) using organic matter. The aim of this internship is to study the impact of hydrostatic pressure on bacteria doing fermentation (or anaerobic degradation) and on fermentation pathways themselves. Bacteria’s relationship with viruses will also be studied. This will be done using several techniques including, but not limited to, radio- and stable isotope tracer analysis, cell and virus counting, data analysis and calculations of microbial growth.

Last Updated 23.11.2021