Diatom diversity and community assembly in the polar oases of Antarctica, PhD

Faculty of Science, Czech Republic (the)

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The award	How you will study	Study duration	Course start	Domestic course fees	International course fees
PhD	Full-time	find out	find out	find out	find out

About Diatom diversity and community assembly in the polar oases of Antarctica, PhD - at Faculty of Science

Antarctica is Earth's most pristine and geographically isolated continent. While 99% of its terrestrial area is ice-covered, freshwater habitats scatter the ice-free oases near the coast, representing important habitat for Antarctic biodiversity. Currently, rapid climate changes are fundamentally transforming these limno-terrestrial habitats, and at the same time, Antarctic diversity remains critically under-documented due to the majority of it being microbial. Of the microbial eukaryotes, diatoms (single-celled siliceous algae) are likely the most diverse. Diatoms have been widely studied from Antarctica using morphological methods, yet they have been rarely studied using molecular methods (e.g. DNA metabarcoding) despite widespread cryptic diversity within this group. As a result, we are only beginning to get a sense of Antarctic diatom diversity, community assembly, and biogeography. This contrasts strongly with the application of diatoms in biomonitoring and as ecological proxies, and combined with the imminent impacts of climate change makes their study particularly urgent.

Using a combination of new and archived samples, the focus of this doctoral thesis will be to:

1) Compare morphological/molecular diatom diversity from different habitats and regions,

2) Characterize and quantify diatom community assembly processes with DNA metabarcoding, and

3) Synthesize results to project how communities will shift with climate change.

Five relevant publications of the research group:

Koll

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