Forest Pyrogenic Peat Soils and Gleyzems in Swampy Mountain Valleys in the South of Yenisei Siberia

Eurasian Soil Science - The differences between eutrophic peat soils (Hypereutric Sapric Histosols) and peaty gleyzems (Eutric Histic Gleysols) 20 years after a forest-peat fire have been studied...     

Microbial reefs in the Black Sea fueled by anaerobic oxidation of methane

Massive microbial mats covering up to 4-meter-high carbonate buildups prosper at methane seeps in anoxic waters of the northwestern Black Sea shelf. Strong 13C depletions indicate an incorporation of methane carbon into carbonates, bulk biomass, and specific lipids. The mats mainly consist of densely aggregated archaea (phylogenetic ANME-1 cluster) and sulfate-reducing bacteria (Desulfosarcina/Desulfococcus group). If incubated in vitro, these mats perform anaerobic oxidation of methane coupled to sulfate reduction. Obviously, anaerobic microbial consortia can generate both carbonate precipitation and substantial biomass accumulation, which has implications for our understanding of carbon cycling during earlier periods of Earth's history.     

Sorghum irrigation equipment and regime with various watering methods under conditions of the Volgograd oblast

A comparative assessment of the yielding ability of sorghum with sprinkling and subsoil irrigation (SSI) is performed. Components of SSI equipment making it possible to increase the yielding ability of this crop are proposed.