English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/101093
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Title

Establishing a tracer-based sediment budget to preserve wetlands in Mediterranean mountain agroecosystems (NE Spain)

AuthorsNavas Izquierdo, Ana ; López-Vicente, Manuel ; Gaspar Ferrer, Leticia ; Palazón Tabuenca, Leticia ; Quijano Gaudes, Laura
KeywordsSoil redistribution
137Cs
GIS
Lake siltation
Sediment dating
Endorheic agroforestry catchment
Issue DateOct-2014
PublisherElsevier
CitationNavas A, López-Vicente M, Gaspar L, Palazón L, Quijano L. Establishing a tracer-based sediment budget to preserve wetlands in Mediterranean mountain agroecosystems (NE Spain). Science of The Total Environment 496: 132–143 (2014)
AbstractMountain wetlands in Mediterranean regions are particularly threatened in agricultural environments due to anthropogenic activity. An integrated study of source-to-sink sediment fluxes was carried out in an agricultural catchment that holds a small permanent lake included in the European NATURA 2000 Network. More than 1000 yrs of human intervention and the variety of land uses pose a substantial challenge when attempting to estimate sediment fluxes which is the first requirement to protect fragile wetlands. To date, there have been few similar studies and those that have been carried out have not addressed such complex terrain. Geostatistical interpolation and GIS tools were used to derive the soil spatial redistribution from point 137Cs inventories, and to establish the sediment budget in a catchment located in the Southern Pyrenees. The soil redistribution was intense and soil erosion predominated over soil deposition. On the areas that maintained natural vegetation the median soil erosion and deposition rates were moderate, ranging from 2.6 to 6 Mg ha yr− 1 and 1.5 to 2.1 Mg ha yr− 1, respectively. However, in cultivated fields both erosion and deposition were significantly higher (ca. 20 Mg ha yr− 1), and the maximum rates were always associated with tillage practices. Farming activities in the last part of the 20th century intensified soil erosion, as evidenced by the 1963 137Cs peaks in the lake cores and estimates from the sediment budget indicated a net deposition of 671 Mg yr− 1. Results confirm a siltation risk for the lake and provide a foundation for designing management plans to preserve this threatened wetland. This comprehensive approach provides information useful for understanding processes that influence the patterns and rates of soil transfer and deposition within fragile Mediterranean mountain wetlands subjected to climate and anthropogenic stresses.
DescriptionPags.- 5 Figs.- 2 Tabls.- Suppl. Materials. The definitive version is available at: http://www.sciencedirect.com/science/journal/00489697
Publisher version (URL)http://dx.doi.org/10.1016/j.scitotenv.2014.07.026
URIhttp://hdl.handle.net/10261/101093
DOI10.1016/j.scitotenv.2014.07.026
ISSN0048-9697
Appears in Collections:(EEAD) Artículos
Files in This Item:
File Description SizeFormat 
NavasA_SciTotEnv_2014.pdfText, Tables, Figures.2,53 MBAdobe PDFThumbnail
View/Open
NavasA_SciTotEnv-SuppMat_2014.pdfSupplementary Materials123,08 kBAdobe PDFThumbnail
View/Open
Show full item record
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.