Capacidad de las raíces para penetrar sustratos compactados y detectar grietas. Metodología y aplicación a la colonización vegetal de laderas erosionadas en ambiente semiárido

摘要: This study describes a methodology to the capacity of roots penetrate substrates and reach cracks in wide range compactions. It also aims at determining effects root morphology, substrate resistance penetration depth most superficial layer on ability compacted medium. The is based use wax discs made with different proportions parafine vaseline that determine levels penetration. A 2 x 5 full factorial design three factors (root morphology: tap- vs. fibrous-roots, depth: 3 7 mm degree penetration: within 60-1500 kPa) was used analyse their cracks. Results indicate played major role rate velocity We found no effect morphology Moreover, compaction were relevant On basis these results, we discuss possible plant strategies may explain success roadslope colonising species semiarid environments. mixed strategy considers into soil or crack detection by could be successful for establishment roadfills, whereas detect limiting highly layers roadcuts should an advantage latter slopes.