The important life-supporting role of hydrogen sulfide (H2S) has evolved from bacteria to
plants, invertebrates, vertebrates, and finally to mammals. Over the centuries, however, H2S …

The majority of life on Earth—notably, microbial life—occurs in places that do not receive
sunlight, with the habitats of the oceans being the largest of these reservoirs. Sunlight …

Speciation is facilitated if ecological adaptation directly causes assortative mating, but few
natural examples are known. Here we show that a shift in colour pattern mimicry was crucial …

▪ Abstract A small number of prokaryotic species have a unique physiology or ecology
related to their development of unusually large size. The biomass of bacteria varies over …

Isotope fractionation during sulfate reduction by natural populations of sulfate-reducing
bacteria was investigated in the cyanobacterial microbial mats of Solar Lake, Sinai and the …

A previously unknown giant sulfur bacterium is abundant in sediments underlying the
oxygen minimum zone of the Benguela Current upwelling system. The bacterium has a …

Subsurface bacteria also occur in hydrothermal sediments with large temperature gradients
(up to 12° C/m) and with population numbers similar to non-hydrothermal sites at …

Sixteen short sediment cores were recovered from the upper edge (UEO), within (WO) and
below (BO) the oxygen minimum zone (OMZ) off Peru during cruise 147 of R/V Sonne …

Pyrite (FeS2) and iron monosulfide (FeS) play a central role in the sulfur and iron cycles of
marine sediments. They may be buried in the sediment or oxidized by O2 after transport by …

The sulfur cycle is an important, although understudied facet of today's modern oxygen
minimum zones (OMZs). Sulfur cycling is most active in highly productive coastal OMZs …