Interception, throughfall and stemflow partition in drylands: Global synthesis and meta-analysis

•Interception accounted for 24.0% of total rainfall.•Throughfall accounted for 69.8% of total rainfall, increasing towards subhumid sites.•Stemflow accounted for 6.2% of total rainfall, decreasing towards subhumid sites.•Shrubs presented higher stemflow and lower throughfall percentages than trees.•...

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Bibliographic Details
Published in:Journal of hydrology (Amsterdam) 2019-01, Vol.568, p.638-645
Main Authors: Magliano, Patricio N., Whitworth-Hulse, Juan I., Baldi, Germán
Format: Article
Language:English
Subjects:
Aridity
Ecohydrology
Precipitation
Rangelands
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Summary:•Interception accounted for 24.0% of total rainfall.•Throughfall accounted for 69.8% of total rainfall, increasing towards subhumid sites.•Stemflow accounted for 6.2% of total rainfall, decreasing towards subhumid sites.•Shrubs presented higher stemflow and lower throughfall percentages than trees.•Higher stemflow percentage of dry sites was explained by higher abundance of shrubs. The net amount of rainfall entering into the soil and its spatial distribution at the patch scale are key drivers of ecosystem processes in drylands. The spatial distribution of water is mainly controlled by vegetation canopy which determines the partitioning of rainfall into interception, throughfall and stemflow. In this paper, we synthesized and analyzed rainfall partitioning for 68 woody plant species in drylands (delimited by a rainfall-potential evapotranspiration ratio
ISSN:0022-1694
1879-2707
DOI:10.1016/j.jhydrol.2018.10.042