Nitrification, the oxidation of ammonia via nitrite to nitrate, has been considered to be a
stepwise process mediated by two distinct functional groups of microorganisms. The …

Our understanding of the players and pathways of the global nitrogen cycle has advanced
substantially over recent years with discoveries of several new groups of organisms and …

The recent discovery of bacteria within the genus Nitrospira capable of complete ammonia
oxidation (comammox) demonstrated that the sequential oxidation of ammonia to nitrate via …

Shallow lakes, the most prevalent type of freshwater ecosystems, can shift between clear
states with macrophyte dominance and turbid, phytoplankton-dominated states. Such …

Highlights•In engineered ecosystems comammox Nitrospira spp. can be highly abundant.•
Comammox Nitrospira cannot be identified based on 16S rRNA or nxrBgene …

Rivers are well-known sources of the greenhouse gasses (GHG) carbon dioxide (CO 2),
methane (CH 4) and nitrous oxide (N 2 O). These emissions from rivers can increase …

Freshwater denitrification removes a considerable amount of nitrogen from inland waters,
which are under pressure from eutrophication and warming. However, incomplete …

Oxygen minimum zones (OMZs) are marine regions where O2 is undetectable at
intermediate depths. Within OMZs, the oxygen-depleted zone (ODZ) induces anaerobic …

Microbial interaction is an integral component of microbial ecology studies, yet the role,
extent, and relevance of microbial interaction in community functioning remains unclear …

Nitrification plays a key role in the marine nitrogen (N) cycle, including in oceanic oxygen
minimum zones (OMZs), which are hot spots for denitrification and anaerobic ammonia …