Autotrophic and heterotrophic associated biosignatures in modern freshwater microbialites over seasonal and spatial gradients

Phospholipid fatty acid (PLFA) profiles and isotopic biosignatures associated with autotrophic and heterotrophic microbial processes in freshwater microbialites exposed to seasonal and spatial gradients in Pavilion Lake, British Columbia were investigated. The PLFA biosignature profiles of the microbialite associated microbial communities were dominated by saturated and monoenoic PLFAs and showed no resolvable response to variation in light or …