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Assessing the Sensitivity of Riparian Algarrobo Dulce (Prosopis flexuosa DC) Radial Growth to Hydrological Changes Cover

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

Open Access
|Feb 2016

Figures & Tables

Geographical location of the study area (a), spatial position of the sampled plots (b), and Ombrothermic diagram drawn according to the methods of Bagnouls and Gaussen (1953) (c). Precipitation and temperature data belongs to the Encón climatic station (32° 15’ S, 67° 47’ W), covering the 1971–1987 period. Source for the satellite images was Google Earth http://earth.google.es.
Prosopis flexuosa cross-section showing annual rings.
Raw ring-width series of the analyzed trees showing pointer years (vertical lines) at the EMN and EMF plots for the common period 1991–2008.
Correlation functions between each EMN and EMF residual chronologies and monthly total streamflow and precipitation data for the common period 1991–2008. Black bars indicate significance at p<0.05.

Characteristics of the tree-ring chronologies_ N — Number of sampled trees per plot (in parenthesis: total number of dendrochrono-logical samples); Period — time range of the sampled cores; TRW — mean ring-width value; MC — mean correlation between series at each plot; MS — mean sensitivity; EPS — mean Expressed Population Signal, RBAR — average correlation between all series_

PlotNPeriodTRW (mm)MCMSEPSRBAR
EMN19(21)1964-20101.560.5180.4700.740.16
EMF13(17)1960-20101.520.5050.4190.580.12

Geographical and hydrological settings of the sampled plots_ EMN — El Mateo near; EMF — El Mateo far_ DRB — plot distance from the riverbank_ GWD — groundwater depth_

PlotAltitude (m)DRB (m)GWD (m)Latitude (°S)Longitude (°W)
EMN514152.932°14′18.3″67°41′14.7″
EMF5134003.632°14′30.7″67°41′21.8″

Model parameters (explanatory variables), significance (p), slope and adjusted coefficient of determination (R2adj_) for the “optimal model” of each dependent variable_ StrFI — Streamflow; P — Precipitation_ SDJFM referred to the mean streamflow values of September, December, January, February and March months_

PlotConstantParameterpSlopeParameterSlopepR2adj.
EMN0.9867StrFI(SDJFM)0.0222>0StrFI(SDJFM)2<00.04640.3516
EMF0.791567StrFI(August)0.00731>0P(March)>00.068870.416
Language: English
Page range: 1 - 8
Submitted on: Sep 23, 2015
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Accepted on: Dec 14, 2015
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Published on: Feb 18, 2016
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2016 Sergio Piraino, Fidel Alejandro Roig, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.