Articles | Volume 15, issue 7
https://doi.org/10.5194/bg-15-2149-2018
https://doi.org/10.5194/bg-15-2149-2018
Research article
 | 
10 Apr 2018
Research article |  | 10 Apr 2018

Wet season cyanobacterial N enrichment highly correlated with species richness and Nostoc in the northern Australian savannah

Wendy Williams, Burkhard Büdel, and Stephen Williams

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Short summary
The northern Australian savannah grasslands encompass 1.5 million square kilometres, where naturally occurring cyanobacteria cover the soil surface. During the wet season, photosynthetic cyanobacteria continually absorb nitrogen from the air and produce a nutrient-rich slime. This bioactive slime formed a protective biofilm on the soil in-between grass plants and provided nitrogen in a plant-available form. Cyanobacterial species richness increased biofertilisation and boosted soil fertility.
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