IADIZA   20886
INSTITUTO ARGENTINO DE INVESTIGACIONES DE LAS ZONAS ARIDAS
Unidad Ejecutora - UE
artículos
Título:
Spatial and temporal synchronicity in the phenological events of Prosopis flexuosa in the Central Monte Desert
Autor/es:
DEBANDI, G.O.; GIANTOMASSI, M.A.; ROSSI, B.E.; MANTOVÁN, NANCY.G.; VILLAGRA, P.E.
Revista:
REVISTA DE LA FACULTAD DE CIENCIAS AGRARIAS DE LA UNIVERSIDAD NACIONAL DE CUYO
Editorial:
UNIV NACIONAL CUYO
Referencias:
Lugar: Mendoza; Año: 2020 vol. 52 p. 148 - 160
ISSN:
0370-4661
Resumen:
Some desert plant species are capable of using underground water and are thereforeindependent of rainfall events. Species of the genus Prosopis are thought to be facultativephreatophytes, since they have deep and shallow roots that allow them explore waterfrom underground layers and from sub-surface soil horizons. We created a seven-yearseries of phenological data in order to make comparisons between two natural Reservesof Mendoza province (Ñacuñán and Telteca) with different rainfall regimes and accessibility of Prosopis flexuosa trees to water. Percentage of trees in each phenological phase,date of maximum expression, and intensity of each phenological phase were recorded.We found that the trees had a similar date for leafing and flowering across years andsites, even with very different rainfall regimes. However, pod maturation dates variedsignificantly, ocurring 37 days sooner in Telteca. A second peak of leaves and flowerswere recorded at both sites, being highly variable and non-synchronous in most cases,suggesting a quick response to rainfall events. The ability of P. flexuosa to respond tounpredictable rainfall pulses could be an important adaptation to keep ecosystemservices functioning, even though associated pollinators and seed dispersers could getdecoupled from changes in phenological events.