[1] Univ Vienna, Dept Freshwater Ecol, A-1090 Vienna, Austria
[2] Univ Glasgow, Dept Civil Engn, Glasgow G12 8QQ, Lanark, Scotland
[3] Univ New S Wales, Sch Biotechnol & Biomol Sci, Sydney, NSW 2052, Australia
[4] Univ New S Wales, Ctr Marine Biofouling & BioInnovat, Sydney, NSW 2052, Australia
[5] Univ Vienna, Dept Microbial Ecol, A-1090 Vienna, Austria
[6] Newcastle Univ, Sch Civil Engn & Geosci, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[7] Univ Zurich, Inst Plant Biol, CH-8008 Zurich, Switzerland