Table 3.

Frequencies and phylogenetic affiliations of North Sea 16S rRNA clonesa

Phylogenetic groupNo. (%) of clonesNext relative to cloneb% 16S rRNA similarity
Bacteria54 (100)
α-Proteobacteria 4 (7.5)
 SAR116 clusterc 3Unidentified alpha proteobacterium clone OM25d 95.5
Roseobacter 1Marine bacterium strain SFR1e 97.9
γ-Proteobacteria 49 (92.5)
 SAR86 clusterc 44 (83)
  Group A17Unidentified gamma proteobacterium clone OM10d 97.8–99.2
  Group B27Unidentified gamma proteobacterium clone OCS5AF001651 d 96.9–98.1
Thiomicrospira 2 Coxiella burnetii D89795 88.4
 Unknown affiliation2Clone of macroaggregate clone 44f 99.2
 Unknown affiliation1Unidentified gamma proteobacterium clone OM60d 95.3
ɛ-Proteobacteria 1 (2)
Arcobacter 1 A. butzleri 92.2
  • a Obtained in September and November.

  • b In the ARB database.

  • c Reference 35.

  • d Reference 42.

  • e Reference 18.

  • f Reference 12.