Environmental modulation of the seasonal cambial activity in Prosopis flexuosa DC trees from the Monte woodlands of Argentina

Giantomasi, María Alejandra; Roig-Juñent, Fidel Alejandro; Domínguez, Daniel Patón; Massaccesi, G.

doi:10.1016/j.jaridenv.2011.08.010

Cited by 13 publications

(9 citation statements)

References 29 publications

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“…In the Central Monte Desert, the P. flexuosa treering development takes place from October to March (Giantomasi et al, 2012). Thus, at the EMN plot, radial growth seemed to be tightly coupled to streamflow changes along the whole growing season.…”

Section: Discussionmentioning

confidence: 98%

“…Mean annual streamflow, coincident with previous year July-current year June period, was computed following Vich et al (2014). On the other hand, annual precipitation average corresponded to previous year April-current year March period, representing the time window between the end of preceding and current growing seasons (Giantomasi et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…In order to directly compare the influence of both hydrological variables upon the ring development, we focused on the common time period from preceding year April to current year March, when cambium activity ends (Giantomasi et al, 2012). Correlations were computed with the software DENDROCLIM2002 and tests for significance were determined through the bootstrap method (Guiot, 1991;Biondi and Waikul, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…Correlations were computed with the software DENDROCLIM2002 and tests for significance were determined through the bootstrap method (Guiot, 1991;Biondi and Waikul, 2004). Possible differences in radial growth-environmental variability relation as function of tree spatial distribution were analyzed by the means of ANOVA computed on the r/s coefficients (r being the Pearson correlation moment, and s its standard deviation), focusing only on the current growing season period (October to March; Giantomasi et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…Giantomasi et al, 2012Giantomasi et al, , 2013Piraino et al, 2015). Nevertheless, a comprehensive understanding of the species sensitivity to hydrological changes in riparian settings is still lacking (but see Piraino et al, 2015, for a first description of riparian P. flexuosa growth and its relation with precipitation variability).…”

Section: Introductionmentioning

confidence: 99%

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Assessing the Sensitivity of Riparian Algarrobo Dulce (<i>Prosopis flexuosa</i> DC) Radial Growth to Hydrological Changes

Piraino

Roig

2016

Geochronometria

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Ecotones, as for example riparian zones, have long interested ecologists, due to their potential role in generating species biodiversity and evolutionary novelty, as well as their sensitivity to environmental changes. Along riparian areas, vegetation is recognized for its ecological importance in several ecosystemic processes. In the Central Monte Desert (central-west Argentina), Prosopis flexuosa grows in territories characterized by a permanent access to water reservoirs, e.g. along riverbanks, where the species forms the classic gallery forests. Despite the ecosystemic role of the different Prosopis species distributed in arid lands, thus far no analysis has been conducted regarding the relation between their radial growth and hydrological changes, namely streamflow variability, in riparian settings. To fill this gap of knowledge, we performed a dendrochronological analysis considering several riparian P. flexuosa trees differing in their spatial position in relation to the riverbank. Pointer years, correlation function, and regression analyses show differences in the dendrohydrological signal of the studied species, probably function of tree distance from the river. In this sense, radial growth of trees distributed near the riverbank is tightly coupled to spring-summer (September to March) streamflow variability, whereas for farthest trees the ring development is driven by a combination of winter and spring river discharge and late-summer precipitation amount. The presented results demonstrate the potentiality of P. flexuosa, and in a broader sense of the Prosopis genus, in dendrohydrological studies.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%