Sentences with phrase «by nitrification»
Ocean acidification is also predicted to reduce microbial production of nitrate from ammonium (Beman et al., 2011), which could have major consequences for oceanic primary production because a significant fraction of the nitrate used by phytoplankton is generated by nitrification at the ocean surface (Yool et al., 2007).
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N2O emissions are mainly caused by microbiological processes known as nitrification and denitrification.
Nitrification, the oxidation of ammonia via nitrite to nitrate, has always been considered to be a two - step process catalysed by chemolithoautotrophic microorganisms oxidising either ammonia or nitrite.