New paper in The ISME Journal

N₂ fixation is an important process in photosynthetic microbial mats, but the contribution of different diazotrophs is still poorly understood. In an international collaboration, Dagmar Woebken, Faris Behnam, Arno Schintlmeister, and Michael Wagner showed that the cyanobacterium Lyngbya spp. is the most active diazotroph in microbial mats at Guerrero Negro, Mexico. Furthermore, the effect of CARD-FISH on the isotopic composition of microbial cells in SIP-NanoSIMS investigations was elucidated.