Impact of Bacterial NO3− Transport on Sediment Biogeochemistry
Impact of Bacterial NO3− Transport on Sediment Biogeochemistry
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DOI：
10.1128/aem.71.11.7575-7577.2005
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发表时间：
2005-11
影响因子：
4.4
通讯作者：
Mikio Sayama;N. Risgaard-Petersen;L. Nielsen;H. Fossing;P. Christensen
中科院分区：
文献类型：
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作者：
Mikio Sayama;N. Risgaard-Petersen;L. Nielsen;H. Fossing;P. Christensen
摘要实验表明，Beggiatoa可以在海洋沉积物中诱导超过10 mm的H2S耗尽的亚氧带，并导致沉积物NO3−还原从反硝化到异化NO3−还原为铵的分化。pH、O2和H2S的分布表明，该细菌用NO3-氧化H2S，并将S 0输送到沉积物表面进行好氧氧化。
ABSTRACT 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.