Mid-day photomixotrophy by spp. and implications for the C content of hot spring cyanobacterial mats.

Unlabelled: Microbial mats inhabiting extreme environments have been studied as modern analogs of stromatolites. Mats in Octopus Spring and Mushroom Spring, Yellowstone National Park, are predominated by unicellular photoautotrophic cyanobacteria ( spp.), which are thought to cross-feed filamentous photoheterotrophic bacteria (mainly spp.