Impact of bacterial NO3(-) transport on sediment biogeochemistry.
Experiments demonstrated that Beggiatoa could induce a H2S-depleted suboxic zone of more than 10 mm in marine sediments and cause a divergence in sediment NO3(-) reduction from denitrification to dissimilatory NO3(-) reduction to ammonium. pH, O2, and H2S profiles indicated that the bacteria oxidized H2S with NO3(-) and transported S0 to the sediment surface for aerobic oxidation.
Sayama
Mikio
M
National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan.
Risgaard-Petersen
Nils
N
Nielsen
Lars Peter
LP
Fossing
Henrik
H
Christensen
Peter Bondo
PB
D019015:Geologic Sediments / Q000737:chemistry* / Q000382:microbiology*; D006862:Hydrogen Sulfide / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D009566:Nitrates / Q000378:metabolism*; D010100:Oxygen / Q000032:analysis; D041962:Thiotrichaceae / Q000378:metabolism*
D009566:Nitrates; D010100:Oxygen; D006862:Hydrogen Sulfide