TABLE 1.

Key OTUs (≥2% abundance) and their closest relatives (≥90% similarity) in the GenBank database

OTUMost closely related species (GenBank accession no.)Similarity (%)Abundance (%)
Jan-112Stenotrophomonas maltophilia (AB180661)9816
Jan-117Uncultered δ proteobacterium (AB031598)946
Jan-185Alcanivorax sp. (AB053131)994
Jan-68Acidovorax sp. (Y18617)994
Jan-113Bacteriodetes bacterium (AY521223)943
Jan-95Cytophaga sp. (AF427479)922
Jan-56Flexibacter tractuosus (AB031598)932
Jan-162Olavius algarvensis (AF328857)922
Jan-118Robiginitalea biformata (AY424899)942
Apr-116Stenotrophomonas maltophilia (AB180661)998
Apr-148Unidentified γ proteobacterium (AB015576)944
Apr-12Olavius algarvensis (AF328857)942
Apr-46Flavobacteriaceae bacterium (AY177723)982
Apr-66Synechococcus sp. (AF001480)982
Apr-50Uncultured Holophaga sp. (AJ241004)902
Apr-75Uncultured Verrucomicrobia (AJ401121)922
Apr-210Sulfur-oxidizing bacterium (AF170422)922
Apr-253Planctomycetales strain (AJ231181)902
Aug-132Uncultured γ proteobacterium (AJ240987)9230
Aug-80Olleya marilimosa (AY586527)9315
Aug-58Uncultured CFB group bacterium (AJ441241)919
Aug-180Synechococcus sp. (BX569694)934
Aug-9Uncultured Planctomycetales (AJ290183)962
Aug-187Legionella pneumophila (AF134574)952