Discover Magazine: Ecosystem Engineers on ice

In June’s Discover Magazine, science writer Elizabeth Preston explored the mysterious world of icy microbes, focussing on cryoconite. I was lucky enough to chat to Elizabeth several times and provide some photos for the article.

Cover of June's Discover Magazine
Cover of June’s Discover Magazine

Elizabeth described how cryoconite granules form when mineral particles and other debris are “ensnared… in the sticky arms of cyanobacteria” on ice surfaces, having spoken to Prof. Nozomu Takeuchi. I spoke to Elizabeth about the accelerated melting of ice beneath patches of these granules to form cryoconite holes. Krzyztof Zawierucha provided information about the microbes that inhabit the cryoconite holes, including cyanobacteria, heterotrophic bacteria, algae, fungi, protozoans and several invertebrates.

Cryoconite researchers on the Greenland Ice Sheet
Cryoconite researchers on the Greenland Ice Sheet

The article then discussed the ‘biocryomorphology‘ of cryoconite, focussing upon the remarkable process of ice-sculpting to maintain comfortable conditions for microbial activity on the hole floor. Potential impacts of cryoconite as amplifiers of the ice-albedo feedback was then examined, including comments from Andy Hodson (Sheffield).

Tris Irvine-Fynn and I studying cryoconite on the Greenland Ice Sheet (ph. A Edwards)
Tris Irvine-Fynn and I studying cryoconite on the Greenland Ice Sheet (ph. A Edwards)

The article is recommended to anyone looking for a popular science ‘quick-read’ introduction to cryoconite – Elizabeth has presented the basics and some of the complex biotic-abiotic feedbacks in a very accessible and engaging way.

The article is available to view here or in print in June 2016 issue of Discover Magazine.