Our team went on a one-month field expedition to South Georgia at the beginning of this year, funded by the National Geographic Society, to collect water, sediment, ice and snow samples from glaciers around South Georgia.
South Georgia is located south of the Antarctic Convergence and its mountainous landscapes are dominated by glaciers. More than 150 glaciers can be found on South Georgia, and until recently glaciers have been seen as abiotic features, but now it is known that they contain diverse ecosystems with rich communities of bacteria, cyanobacteria, microbial eukaryotes, Archaea, fungi and microfauna even sometimes insects.
South Georgia is located in a zone that will likely be affected by climatic change, which could lead to a further decline of glacial ecosystems. In our project we will therefore do a detailed documentation of the biology and biodiversity found on glaciers on South Georgia using a combination of environmental (eDNA), culture isolation and sequencing. The project is a collaboration between Dr Arwyn Edwards and Tris Irvine-Fynn (Abyerystwyth University), Dr David Pearce (Northumbria University) and me based at the Natural History Museum.
Calving glacier front.