The existence of anaerobic ammonium oxidation (anammox) was hypothesized based on
nutrient profiles and thermodynamic calculations (5, 31, 44). It was first discovered about 1 …

Recently, two fresh water species, "Candidatus Brocadia anammoxidans" and "Candidatus
Kuenenia stuttgartiensis", and one marine species, "Candidatus Scalindua sorokinii", of …

Dysoxic marine waters (DMW, < 1 μM oxygen) are currently expanding in volume in the oceans,
which has biogeochemical, ecological and societal consequences on a global scale. In …

A method combining normal phase high performance liquid chromatography (HPLC) with
positive ion atmospheric pressure chemical ionization mass spectrometry (APCI‐MS) was …

The availability of fixed inorganic nitrogen (nitrate, nitrite and ammonium) limits primary
productivity in many oceanic regions 1 . The conversion of nitrate to N 2 by heterotrophic bacteria …

Marine Crenarchaeota are the most abundant single group of prokaryotes in the ocean, but
their physiology and role in marine biogeochemical cycles are unknown. Recently, a …

In this study the saturated and aromatic hydrocarbon fractions of a marl sample from a Messinian
(late Micoene) evaporitic basin located in the northern Apennines, and four oils, Rozel …

The 16S ribosomal DNA based distinction between the bacterial and archaeal domains of
life is strongly supported by the membrane lipid composition of the two domains; Bacteria …

Lipid membranes are essential to the functioning of cells, enabling the existence of concentration
gradients of ions and metabolites. Microbial membrane lipids can contain three-, five-, …

The TEX 86 is a recently proposed paleothermometer through which ancient seawater
temperatures of up to 120 My ago can be reconstructed. It is based on the relative distribution of …