Nitrogen fixation by free-living cyanobacteria from different coastal sites in a high arctic tundra, Spitsbergen

Nitrogen fixation rates were measured throughout the summer of 1994 in samples from seven coastal sites at the north side of Brøggerhalvøya, Spitsbergen (78.5°N, 11.6°E) using the acetylene reduction method on intact soil cores. All the sites had a crust containing cyanobacteria, which were consider...

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