Oxygen minimum zones (OMZs) have substantial effects on the global ecology and
biogeochemical processes of marine microbes. However, the diversity and activity of OMZ …

Nitrogen is an essential nutrient for all life on Earth. It is, and likely has been, a critical
limiting nutrient controlling primary production rates in the oceans. The marine N budget is …

Microbes transform aqueous mercury (Hg) into methylmercury (MeHg), a potent neurotoxin
that accumulates in terrestrial and marine food webs, with potential impacts on human …

Microbial communities drive biogeochemical cycles through networks of metabolite
exchange that are structured along energetic gradients. As energy yields become limiting …

Chlamydiae are highly successful strictly intracellular bacteria associated with diverse
eukaryotic hosts. Here we analyzed metagenome-assembled genomes of the “Genomes …

Eukaryotes originated prior to the establishment of modern marine oxygen (O2) levels.
According to the body fossil and lipid biomarker records, modern (crown) microbial …

Microbial enzymes often occur as distinct variants that share the same substrate but differ in
substrate affinity, sensitivity to environmental conditions, or phylogenetic ancestry …

Marine oxygen minimum zones (OMZs) are widespread regions of the ocean that are
currently expanding due to global warming. While inhospitable to most metazoans, OMZs …

Shallow coastal waters are dynamic environments that dominate global marine methane
emissions. Particularly high methane concentrations are found in seasonally anoxic waters …

Four decades of studies on pristine Baffin Island fjords are summarized with respect to
sediment redistribution processes and resulting deposits. Sediment fill in these fjords …