Biological soil crusts modulate nitrogen availability in semi-arid ecosystems: insights from a Mediterranean grassland

  title={Biological soil crusts modulate nitrogen availability in semi-arid ecosystems: insights from a Mediterranean grassland},
  author={Andrea P. Castillo-Monroy and F. Maestre and Manuel Delgado-Baquerizo and A. Gallardo},
  journal={Plant and Soil},
  • Andrea P. Castillo-Monroy, F. Maestre, +1 author A. Gallardo
  • Published 2009
  • Environmental Science
  • Plant and Soil
  • Biological soil crusts (BSCs) greatly influence the N cycle of semi-arid ecosystems, as some organisms forming them are able to fix atmospheric N. However, BSCs are not always taken into account when studying biotic controls on N cycling and transformations. Our main objective was to understand how BSCs modulate the availability of N in a semi-arid Mediterranean ecosystem dominated by the tussock grass Stipa tenacissima. We selected the six most frequent soil cover types in the study area: S… CONTINUE READING
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