TABLE 3.

Percentage of Methanomicrobiales, Methanobacteriales, Methanosarcinaceae, Methanosaetaceae, and unclassified Euryarchaeota calculated on basis of the total archaeal community as determined by ARDRA, Q-PCR, and FISH

Reactor and analysis methodDistribution of the indicated methanogenic group (%)a
MMMBMsMxNCE
R1
    ARDRA754ND21ND
    Q-PCR612<136ND
    FISH6811ND21ND
R2
    ARDRA991NDNDND
    Q-PCR99<1NDNDND
    FISHNANANANANA
R3
    ARDRA98ND11ND
    Q-PCR853ND12ND
    FISHNANANANANA
R4
    ARDRA961NDND3
    Q-PCR8316<1NDND
    FISH6436NDNDND
R5
    ARDRA9314ND2
    Q-PCR972<1NDND
    FISH601030NDND
R6
    ARDRA495ND406
    Q-PCR243<172ND
    FISH306ND64ND
  • a MM, Methanomicrobiales; MB, Methanobacteriales; Ms, Methanosarcinaceae; Mx, Methanosaetaceae; NCE, not classified Euryarchaeota; ND, not detected; NA, not analyzed.