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
The Tennessee Fish and Wildlife Commission held a one-day March meeting on Friday (March 25) at Buffalo Ridge Refuge in Humphreys County. The commission heard presentations on the refuge and several other Tennessee Wildlife Resources Agency ongoing programs and future projects.
TWRA Programs, Projects Discussed At March Commission Meeting chattanoogan.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from chattanoogan.com Daily Mail and Mail on Sunday newspapers.
FGCU research students go underwater to take scuba certification to the next level
Published: April 7, 2021 5:02 PM EDT
Updated: April 7, 2021 6:13 PM EDT
Students at Florida Gulf Coast University are learning how to do research underwater while scuba diving.
The university is known for researching issues that happen in our own backyard, but in order to get out there, students first have to get their feet wet, in a pool.
Calli Johnson is a dive safety officer and scientific diving course instructor at FGCU, She says, “We’re doing a really, really simple introduction to technical diving here in the pool.”
Don’t mistake this for a pleasure diving course, for these students it’s all about scientific research.