||Braun S et al., Size and Carbon Content of Sub-seafloor Microbial Cells at Landsort Deep, Baltic Sea. Front Microbiol. 2016 Aug 31 7: 1375. doi: 10.3389/fmicb.2016.01375 p.2 right column top paragraphPubMed ID27630628
||Andrén, T., Jørgensen, B. B., Cotterill, C., Green, S., and Exped. 347 Scientists (2015). “Baltic sea paleoenvironment,” in Proceedings of the Integrated Ocean Drilling Program, Vol. 347 (Tokyo: Integr. Ocean Drill. Program Manag. Int.). Available online at: link
||P.2 left column bottom paragraph: "The drilling site was situated in the central part of the Landsort Deep, which is the deepest sub-basin (437 m water depth) in the Baltic Sea Basin. It contains a thick and continuous record of the last ~14,000 years, including the transition from Holocene, organic-rich clay to glacial, low-organic clay (primary source). It is characterized by high sedimentation rates (100–500 cm/kyr), high concentrations of total organic carbon (TOC), and extremely high microbial abundance (up to 10^10 cells/cm^3) in the organic-rich Holocene deposits (primary source)."