Symbiotic moss-cyanobacteria associations as a novel source of biological N2-fixation in temperate grasslands

Lalita Calabria, Kate Peterson, Amanda Bidwell & Sarah Hamman
Aims. Terrestrial mosses contribute significantly to nitrogen budgets in boreal forests through symbiotic associations with N2-fixing cyanobacteria, but few studies have considered these interactions in temperate systems. We investigated how N2-fixation by moss-cyanobacterial associations contribute spatio-temporally to site-level N dynamics in a western North American prairie ecosystem. Methods. We first tested for the presence of N2-fixing cyanobacteria on six moss species using epi-fluorescence light microscopy. We then used an acetylene reduction assay to estimate monthly...

Registration Year

  • 2020
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Affiliations

  • University of Washington
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  • MIT University
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  • The Evergreen State College
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