ABSTRACT
The phylogenetic affiliation and physiological characteristics (e.g.,
K
s
and maximum specific growth rate [μ
max
]) of an anaerobic ammonium oxidation (anammox) bacterium, “
Candidatus
Scalindua sp.,” enriched from the marine sediment of Hiroshima Bay, Japan, were investigated. “
Candidatus
Scalindua sp.” exhibits higher affinity for nitrite and a lower growth rate and yield than the known anammox species.