Molecular organic geochemical proxies are increasingly being utilized to reconstruct past
environmental conditions as new tools continue to be discovered and developed. To date …

Soil organic matter (SOM) consists of a vast range of biomolecules, but their individual
contribution to the biogeochemical cycling of nutrients and CO 2 release has eluded …

Lipids from prokaryotic cell membranes can serve as sources of information on the
biogeochemistry and microbial ecology of natural ecosystems. Traditionally, apolar …

Abstract Highly acidic (pH 0–1) biofilms, known as 'snottites', form on the walls and ceilings
of hydrogen sulfide-rich caves. We investigated the population structure, physiology and …

Sedimentary 2-methyhopanes have been used as biomarker proxies for cyanobacteria, the
only known bacterial clade capable of oxygenic photosynthesis and the only group of …

The stratified water column of the Black Sea is partitioned into oxic, suboxic, and euxinic
zones, each characterized by different biogeochemical processes and by distinct microbial …

Anaerobic oxidation of methane in anoxic sediments at cold seeps often leads to formation
of authigenic carbonates close to the seafloor along continental margins. Recent work …

Hopanoids have generally been found in aerobic bacteria (ie methanotrophs, heterotrophs
and cyanobacteria). Here we show that a variety of hopanoids (ie bacteriohopanetetrol …

Cyanobacteria are ubiquitous, ecologically important and phylogenetically diverse
components of the phytoplankton of marine and freshwater environments, as well as some …

Bacteriohopanepolyols (BHPs) are membrane lipids produced by a wide range of
prokaryotes, including many methanotrophs, methylotrophs, cyanobacteria, nitrogen fixing …