N2-Fixation in Cyanobacterial Mats from Ponds on the McMurdo Ice Shelf, Antarctica

@article{FernndezValiente2001N2FixationIC,
  title={N2-Fixation in Cyanobacterial Mats from Ponds on the McMurdo Ice Shelf, Antarctica},
  author={Eduardo Fern{\'a}ndez-Valiente and Antonio Quesada and Clive Howard-Williams and Ian Hawes},
  journal={Microbial Ecology},
  year={2001},
  volume={42},
  pages={338-349}
}
We have investigated the ecological importance of N2-fixation in cyanobacterial mats, dominated by oscillatorean species, in ponds of the Bratina Island area of the McMurdo Ice Shelf, Antarctica (78°S, 166°E). Nitrogenase activity, estimated as acetylene reducing activity (ARA), was found in all the mats investigated (n = 16). The average ARA was 75.9 mmol ethylene m-2 h-1, ranging from 6 to 201 mmol ethylene m-2 h-1. Nitrogenase activity was positively correlated with dissolved reactive… CONTINUE READING