Translocation of nitrogen and carbon integrates biotic crust and grass production in desert grassland

  title={Translocation of nitrogen and carbon integrates biotic crust and grass production in desert grassland},
  author={L. E. S. Green and Andrea Porras-Alfaro and Robert L. Sinsabaugh},
1. Arid ecosystems are a patch mosaic of plants and biological soil crusts that have been described as islands and mantles of fertility, respectively. To determine whether these patches are metabolically linked by a fungal network of dark septate and arbuscular mycorrhizal fungi (AMF), we measured translocation of nitrogen (N) and carbon (C) in a desert grassland using 15 N-NO 3 and 13 C 5 , 15 N-glutamic acid as substrates. 2. Substrates were applied as point sources to either small patches of… CONTINUE READING
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