100 years of anthropogenic impact causes changes in freshwater functional biodiversity elifesciences.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from elifesciences.org Daily Mail and Mail on Sunday newspapers.
Prokaryotes constitute the majority of sedimentary biomass, where they cycle organic carbon and regulate organic matter transformation. The microbes inhabiting sediment are diverse, and the factors controlling microbial community composition are not fully understood. Here, we characterized the prokaryotic community using 16S rRNA gene sequencing in 24 stratigraphic layers within a 89 cm (dated to ~1900 years old) sediment core from an anchialine sinkhole in the Bahamas with a stratified water column and anoxic bottom water. The microbial community was dominated by members of the Alphaproteobacteria, Dehalococcoidia, Gammaproteobacteria, Bathyarchaeota, and Campylobacter classes. Most interestingly, subsurface microbial community structure could be correlated to previous evidence for timewise changes in the main source of organic matter that was supplied to the sediment accumulating during the last 2000 years, which itself was caused by regional terrestrial vegetation changes. The C:N r
Changing Patterns of Disease Severity in Blastomyces dermatitidis Infection, Quebec, Canada maravipost.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from maravipost.com Daily Mail and Mail on Sunday newspapers.