Nitrogen fixation in biological soil crusts from southeast Utah, USA
@article{Belnap2002NitrogenFI, title={Nitrogen fixation in biological soil crusts from southeast Utah, USA}, author={Jayne Belnap}, journal={Biology and Fertility of Soils}, year={2002}, volume={35}, pages={128-135} }
Abstract. Biological soil crusts can be the dominant source of N for arid land ecosystems. We measured potential N fixation rates biweekly for 2 years, using three types of soil crusts: (1) crusts whose directly counted cells were >98% Microcoleus vaginatus (light crusts); (2) crusts dominated by M. vaginatus, but with 20% or more of the directly counted cells represented by Nostoc commune and Scytonema myochrous (dark crusts); and (3) the soil lichen Collema sp. At all observation times…
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