Search results for " Stipa"

showing 2 items of 2 documents

Rainfall timing and runoff: The influence of the criterion for rain event separation

2016

Abstract Rain is not uniform in time and space in semiarid areas and its distribution is very important for the runoff process. Hydrological studies usually divide rainfall into events. However, defining rain events is complicated, and rain characteristics vary depending on how the events are delimited. Choosing a minimum inter-event time (MIT) is a commonly used criterion. Our hypothesis is that there will be an optimal MIT that explains the maximum part of the variance of the runoff, with time to runoff used as a surrogate. The objective is to establish a procedure in order to decide upon this optimal MIT. We developed regressions between time to runoff (T0) and three descriptive variable…

Fluid Flow and Transfer ProcessesGeneration processHydrologysemiaridMacroporemacrochloa tenacissima (= stipa tenacissima)Mechanical EngineeringHidrologia0208 environmental biotechnologySeparation (aeronautics)TA Engineering (General). Civil engineering (General)runoff02 engineering and technologyHydraulic engineering020801 environmental engineeringminimum inter-event time (mit)Dry soilEnvironmental scienceDewSurface runoffTC1-978Water contentWater Science and TechnologyEvent (probability theory)rain events
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Stipa valdemonensis (Poaceae), a new species from Sicily

2012

A new species of Stipa, endemic to Sicily, is here described and named Stipa valdemonensis. The new taxon is related to S. crassiculmis. Owing to the small number of individuals observed, in few restricted localities only, it is assigned the IUCN threat status “vulnerable”

Settore BIO/02 - Botanica SistematicaSicilian flora Stipa Mediterranean islands taxonomy
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