The ProkaBioDen database, a global database of benthic prokaryotic biomasses and densities in the marine realm

Benthic prokaryotes include Bacteria and Archaea and dominate densities of
marine benthos. They play major roles in element cycles and heterotrophic,
chemoautotrophic, and phototrophic carbon production. To understand how
anthropogenic disturbances and climate change might affect these
processes, better estimates of prokaryotic biomasses and densities are
required. Hence, I developed the ProkaBioDen database, the largest
open-access database of benthic prokaryotic biomasses and densities in
marine surface sediments. In total, the database comprises
1,089 georeferenced benthic prokaryotic biomass and
1,875 density records extracted from 85 and 112 studies,
respectively. I identified all references applying the procedures for
systematic reviews and meta analyses and report prokaryotic biomasses as
g C cm-3 sediment, g C g-1 sediment,
and g C m-2. Density records are presented as cell
cm-3 sediment, cell g-1 sediment/ sulfide/ vent
precipitate, and cell m-2. This database should serve as
reference to close sampling gaps in the future.