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Soil water regime through contrasting pasture communities in a Submediterranean landscape

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dc.contributor Universitat de Vic. Escola Politècnica Superior
dc.contributor.author Casas i Arcarons, M. Carme (Maria Carme)
dc.contributor.author Ninot i Sugrañes, Josep Maria
dc.date.accessioned 2014-05-16T12:15:04Z
dc.date.available 2014-05-16T12:15:04Z
dc.date.created 2007
dc.date.issued 2007
dc.identifier.citation Casas Arcarons, C., & Ninot, J. M. (2007). Soil water regime through contrasting pasture communities in a submediterranean landscape. Journal of Hydrology, 335(1-2), 98-108. doi:10.1016/j.jhydrol.2006.11.007 ca_ES
dc.identifier.issn 0022-1694
dc.identifier.uri http://hdl.handle.net/10854/3052
dc.description.abstract Submediterranean landscape around Vic includes, scattered over intensively farmed ground, a number of hills holding diverse mosaics of natural and seminatural communities. We chose two contrasting communities of pastures to investigate the soil water regime, assumed to be the cause of noticeable shifts in the landscape mosaics. Brachypodio-Aphyllanthetum is a Mediterranean, xerophilous, open pasture dominated by the chamaephytic grass Brachypodium retusum, whereas Plantagini-Aphyllanthetum is a dense grassland of Brachypodium phoenicoides, similar to Medioeuropean mesoxerophilous grasslands. We recorded the soil water content in three plots for each community in different hills, during two and a half years. From gravimetric water percentages and soil water retention curves in each plot, we evaluated the soil water potential and the available water during the study period at different depths. Both communities showed roughly similar seasonal soil water dynamics, which included three clearly differentiated hydric periods: (i) humid (October–April), with soils not far from field capacity; (ii) dry (July–August), when soils were drier than wilting point; and (iii) transitional (May–June), defined by a dramatic water loss. The summer values of water content and hydric potential were similar in the two analysed communities, thus rejecting the hypothesised better summer conditions in the mesoxerophilous grassland. The only clear difference was in the way in which the spring transition occurred, namely it was faster and showed sharper ups and downs in the xerophilous Mediterranean pasture. The inverse seasonal transition, from dry to humid, was clearly a sudden event, strongly depending on the timing of late summer rainfall, and it seems not to be a key factor in shaping the functioning of the communities. The lower moisture values at deep soil layers during the humid periods suggest a deficient hydrological functioning, perhaps connected with the pasture-type vegetation. ca_ES
dc.format application/pdf
dc.format.extent 11 p. ca_ES
dc.language.iso eng ca_ES
dc.publisher Elsevier ca_ES
dc.rights (c) 2007 Elsevier. Published article is available at: http://dx.doi.org/10.1016/j.jhydrol.2006.11.007
dc.subject.other Sequeres ca_ES
dc.subject.other Pastures ca_ES
dc.subject.other Fenologia ca_ES
dc.title Soil water regime through contrasting pasture communities in a Submediterranean landscape ca_ES
dc.type info:eu-repo/semantics/article ca_ES
dc.identifier.doi https://doi.org/doi:10.1016/j.jhydrol.2006.11.007
dc.relation.publisherversion http://www.sciencedirect.com/science/article/pii/S0022169406005890
dc.rights.accesRights info:eu-repo/semantics/closedAccess ca_ES
dc.type.version info:eu-repo/publishedVersion ca_ES
dc.indexacio Indexat a SCOPUS
dc.indexacio Indexat a WOS/JCR ca_ES

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