TABLE 1.

Description of sites studied and distribution of dsr-TRFs among the sediments studied

SiteCodeQualityHabitatTotal no. of TRFsPredicted no. of TRFsaAccountabilityb
Arthur Kill, N.Y.AKDisturbedEstuarine783038.5
Lielupe River, LatviaLtDisturbedFreshwater391025.6
Mono Lake, Calif.MLUndisturbedHypersaline992828.3
Norfolk, Va.NxDisturbedEstuarine782329.5
Onondaga Lake, N.Y.OLDisturbedFreshwater762836.8
Puerto RicoCR1rUndisturbedMangrove1003636.0
Puerto RicoCR3bUndisturbedMangrove773444.2
Puerto RicoF2bUndisturbedMangrove923234.8
Puerto RicoF9rUndisturbedMangrove842732.1
Puerto RicoM2DisturbedMangrove461839.1
Puerto RicoP1DisturbedMangrove431841.9
Shiwa Lake, South KoreaKSDisturbedEstuarine843035.7
VenezuelaVclDisturbedEstuarine521528.8
VenezuelaVnalDisturbedFreshwater983838.8
Venice Lagoon, ItalyS1DisturbedEstuarine1193126.1
Venice Lagoon, ItalyS3DisturbedEstuarine1143328.9
    Total3699419.8
  • a TRF corresponding to a known dsrAB gene in GenBank (27).

  • b Percentage of the population (total TRFs) corresponding to known dsr genes.