Defining minimum runoff length allows for discriminating biocrusts and rainfall events
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Defining minimum runoff length allows for discriminating biocrusts and rainfall events

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Defining minimum runoff length allows for discriminating biocrusts and rainfall events

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dc.contributor.author Lázaro, Roberto
dc.contributor.author Calvo-Cases, Adolfo
dc.contributor.author Arnau-Rosalén, Eva
dc.contributor.author Rubio, Consuelo
dc.contributor.author Fuentes, David
dc.contributor.author López-Canfín, Clément
dc.date.accessioned 2021-12-02T11:00:21Z
dc.date.available 2021-12-02T11:00:21Z
dc.date.issued 2021
dc.identifier.uri https://hdl.handle.net/10550/80903
dc.description.abstract The runoff coefficient (RC) is widely used despite requiring to know the effective contributing area, which cannot be known a priori. In a previous work, we defined runoff length (RL), which is difficult to measure. This work aimed to define the minimum RL (mRL), a quantitative and easy proxy of RL, for use in a pilot study on biocrusts in the Tabernas Desert, Spain. We show that RC decreases according to a hyperbola when the contributing area increases, the independent variable being the length of the effective contributing area and its coefficient involving the effects of rainfall and surface features and antecedent conditions. We defined the mRL as the length of the effective contributing area making RC = 1, which is calculated regardless of the area. We studied mRL from three biocrust types and 1411 events clustered in seven categories. The mRL increased with rain volume and intensity, catchment area and slope, whereas plant cover and biocrust succession (with one exception) had a negative effect. Depending on the plot, mRL reached up 3.3-4.0 m on cyanobacterial biocrust, 2.2-7.5 m on the most widespread lichens, and 1.0-1.5 m on late-successional lichens. We discuss the relationships of mRL with other runoff-related parameters.
dc.language.iso eng
dc.relation.ispartof Journal Of Hydrology And Hydromechanics, 2021, vol. 69, num. 4, p. 387-399
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Lázaro, Roberto Calvo-Cases, Adolfo Arnau-Rosalén, Eva Rubio, Consuelo Fuentes, David López-Canfín, Clément 2021 Defining minimum runoff length allows for discriminating biocrusts and rainfall events Journal Of Hydrology And Hydromechanics 69 4 387 399
dc.subject Biologia dels sòls
dc.title Defining minimum runoff length allows for discriminating biocrusts and rainfall events
dc.type info:eu-repo/semantics/article
dc.date.updated 2021-12-02T11:00:22Z
dc.identifier.doi https://doi.org/10.2478/johh-2021-0029
dc.identifier.idgrec 149183

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