Macrofauna regulate heterotrophic bacterial carbon and nitrogen incorporation in low-oxygen sediments

@article{Hunter2012MacrofaunaRH,
  title={Macrofauna regulate heterotrophic bacterial carbon and nitrogen incorporation in low-oxygen sediments},
  author={William R. Hunter and Bart Veuger and Ursula F. M. Witte},
  journal={The ISME Journal},
  year={2012},
  volume={6},
  pages={2140-2151}
}
Oxygen minimum zones (OMZs) currently impinge upon >1 million km2 of sea floor and are predicted to expand with climate change. We investigated how changes in oxygen availability, macrofaunal biomass and retention of labile organic matter (OM) regulate heterotrophic bacterial C and N incorporation in the sediments of the OMZ-impacted Indian continental margin (540–1100 m; [O2]=0.35–15 μmol l−1). In situ pulse-chase experiments traced 13C:15N-labelled phytodetritus into bulk sediment OM and… CONTINUE READING
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