1. Faculty of Natural Resource Sciences, University of Akureyri, Borgir v. Norðurslóð, 600 Akureyri, Iceland.
2. Icelandic Institute of Natural History, Borgir v. Norðurslóð, 600 Akureyri, Iceland.
3. Iceland GeoSurvey, Branch at Akureyri, Rangarvollum, 603 Akureyri, Iceland.
4. Iceland GeoSurvey, Department of Geothermal Engineering, Grensásvegi 9, 108 Reykjavík, Iceland.
5. Orkustofnun, Icelandic Energy Authority, Grensásvegi 9, 108 Reykjavík, Iceland.
6. Biomedical Center, University of Iceland, Vatnsmýrarvegur 16, 101 Reykjavík, Iceland.
7. School of Biological Sciences, University of Reading, Earley, Reading RG6 6AS, UK.