The influence of Larrea divaricata on soil moisture and on water status and growth of Stipa tenuis in southern Argentina
2002
Kröpfl, Alicia Inés | Cecchi, Gustavo A. | Villasuso, Natalia M. | Distel, Roberto Alejandro
We studied the effect of a dominant shrub (Larrea divaricata) on soil moisture, and how this affected water potential and growth of a dominant grass (Stipa tenuis) in a shrubland located in southern Argentina. Soil moisture in the upper 10 cm of the soil was lower ( po0?05) or similar (po0?05) under the shrub canopy than in the open intercanopy spaces. Concordantly, predawn leaf water potential and growth of Stipa tenuis were higher or similar in intercanopy locations than in canopy locations. The physical presence of L. divaricata canopy frequently reduced soil moisture availability for understory plant growth, in part because of canopy interception of precipitation.
Show more [+] Less [-]Fil: Kröpfl, Alicia Inés. Universidad Nacional del Comahue. Centro Universidad Región Zona Atlántica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Show more [+] Less [-]Fil: Cecchi, Gustavo A.. Instituto Nacional de Tecnología Agropecuaria. Estación Experimental Agropecuaria Valle Inferior; Argentina
Show more [+] Less [-]Fil: Villasuso, Natalia M.. Universidad Nacional del Comahue. Centro Universidad Región Zona Atlántica; Argentina
Show more [+] Less [-]Fil: Distel, Roberto Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
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