Propagación de distintos tipos funcionales de la costra biológica del suelo del desierto del Monte, Argentina

Biological soil crusts (BSC) are associations among cyanobacteria, green algae, lichens, mosses and particles, which contribute to multiple ecosystem functions such as nitrogen fixation stabilization. The present work aims evaluate propagation conditions of different functional types BSC (dominated by cyanolichens, phycolichens mosses) potentially useful for the recovery degraded soils. In greenhouse, were cultivated, combining sowing treatments (crushed BSC, discrete fragments) fertilization (substrate with or without goat manure). Response variables, indicating development functionality, total cover, each type depth stability, ammonium phosphate concentrations. Total cover increased during 19 months experimental period. Crushing favored functionality in pots dominated mosses. addition fertilizer decreased stability lichens moss pots, benefited crushing before sowing. Nutrient concentrations lower soils under than bare We conclude that stability. These results plan restoration strategies drylands.