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Phd Mixotrophic Microalgae in Antarctic Carbon and
2 weken geleden
PhD Mixotrophic Microalgae in Antarctic Carbon and Sulfur Cycles
**Faculty/Services**:Faculty of Science**Educational level**:Master**Function type**:PhD position**Closing date**:5 January 2025**Vacancy number**:13619-
**Come work at the largest university of the Netherlands**
- The Antarctic seasonal sea-ice zone is rapidly changing, with consequences for the key primary producers: microalgae growing in sea-ice and water. While traditionally regarded as purely photoautotrophic, many of these microalgae likely also feed on other microbes or take up dissolved organic matter. Such a mixotrophic lifestyle might help them to survive the polar night and allow them an early start in the growing season, long before other algae receive sufficient light to pick up growth.- Additionally, microalgae contribute to the production of the trace gas dimethylsulfide (DMS) that has an impact on climate via cloud formation. The MACS project aims to understand the role of mixotrophic protists in Antarctic C- and S-cycles. Such mechanistic understanding will help predict how changing ice cover will affect microalgal growth and DMS-production in the future, and whether feedbacks might be expected in a changing climate.**What are you going to do?**
- As PhD student in the MACS project you will investigate how multiple environmental stressors affect the community composition, physiology, and gene expression of Antarctic microalgae, with a particular focus on their mixotrophic nutrition.- Your tasks and responsibilities are:
- Performance of laboratory experiments with cultured microalgae to assess their response to multiple environmental factors under controlled conditions;
- Participation in research expeditions to Rothera station, West Antarctic Peninsula, to assess microalgal species composition and perform field experiments to quantify their rates of feeding and photosynthesis;
- Contribute to experiments using stable isotope probing and proteomic techniques to quantify resource acquisition strategies of individual microalgal taxa both in the lab and field;
- Publication of the results in international scientific journals;
- Presentation of the results in the department, at meetings of the Netherlands Polar Program, and at (international) scientific conferences;
- Supervision of BSc and/or MSc students who wish to do an internship on Antarctic microalgae;
- Completion of a PhD thesis within the official appointment duration of four years.
- This PhD position is tightly linked to two postdoc positions within the MACS project, one with a focus on the role of Antarctic microalgae in the sulphur cycle and the other with a focus on proteomic and stable isotope probing techniques to quantify resource acquisition. The fieldwork and some of the experiments will be performed as a team, while the PhD student will also perform laboratory experiments on their own.- The PhD student will be supervised by a team of scientists from the University of Amsterdam (UvA), the Royal Netherlands Institute of Sea Research (NIOZ), University of Groningen (RUG) and the British Antarctic Survey (BAS). Training and courses during the PhD trajectory will be offered by UvA, and by the Graduate School for Production Ecology & Resource Conservation (PE&RC).**Your profile**What do we require?**
- A MSc degree in marine biology, microbial ecology, aquatic ecology, or closely related discipline;
- Experience with culturing of bacteria or phytoplankton in the laboratory, physiological assays, and with field research in marine and/or freshwater ecosystems;
- A demonstrated ability to work with programming software such us R or Phyton is a plus;
- Strong communication and writing skills in English;
- Willingness and ability to perform extended fieldwork at Rothera station, Antarctica;
- Driving license B.**What we offer you**
- A temporary contract for 38 hours per week for the duration of 4 years (the initial contract will be for a period of 18 months and after satisfactory evaluation it will be extended for a total duration of 4 years). The preferred starting date is 1st of March 2025 or shortly after. This should lead to a dissertation (PhD thesis). We will draft an educational plan that includes attendance of courses and (international) meetings. We also expect you to assist in teaching undergraduates and master students.-
- Besides the salary and a vibrant and challenging environment at Science Park we offer you multiple fringe benefits:
- 232 holiday hours per year (based on fulltime) and extra holidays between Christmas and 1 January;
- multiple courses to follow from our Teaching and Learning Centre;
- a complete educational program for PhD students;
- multiple courses on topics such as leadership for academic staff;
- multiple courses on topics such as time management, handling stress and an online learning platform with 100+ different courses;
- 7 weeks birth leave (partner leave) with 100% salary;
- partly paid parental leave;
- the possibility to set
