“…Journal abbreviations are as follows: AEM, Applied and Environmental Microbiology; AME, Aquatic Microbial Ecology; EM, Environmental Microbiology; FEMS ME, FEMS Microbiology Ecology; FW Bio, Freshwater Biology; GeoMicro J, Geomicrobiology Journal; Mikro, Mikrobiologiia; L&O, Limnology and Oceanography; ME, Microbial Ecology; Micro, Microbiology; FEMS ML, FEMS Microbiology Letters; IJSEM, International Journal of Systematics and Evolutionary Microbiology; Polar Bio, Polar Biology; SAM, Systematic and Applied Microbiology. 1 , manuscript in press at Environmental Microbiology (141a) (includes GenBank accession numbers FJ827781 to FJ828505); 2 , GenBank accession numbers for the sequenced clones are HQ386253 to HQ386631; 3 , GenBank accession numbers for the sequenced clones are FJ916807 to FJ916903 and HQ530565 to HQ532908, except HQ530583, HQ531638, and HQ532521. (Based on data from references 2, 3,4,11,20,22,24,27,35,38,41,42,44,45,46,48,49,52,61,63,69,73,74,82,83,84,85,89,93,95,101,105,106,108,116,124,126,127,134,135,…”