English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/90022
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 | DATACITE
Exportar a otros formatos:


Irrigation agriculture affects organic matter decomposition in semi-arid terrestrial and aquatic ecosystems

AuthorsArroita, M.; Causapé, Jesús; Comín, Francisco A. ; Díez, Joserra; Jiménez, Juan J. ; Lacarta, Juan; Lorente, Carmen; Merchán, Daniel; Muñiz, Selene ; Navarro, Enrique ; Val, Jonatan; Elosegi, Arturo
KeywordsEcosystem functioning
Irrigation agriculture
Issue Date2013
CitationJournal of Hazardous Materials 263: 139- 145 (2013)
AbstractMany dryland areas are being converted into intensively managed irrigation crops, what can disrupt the hydrological regime, degrade soil and water quality, enhance siltation, erosion and bank instability, and affect biological communities. Still, the impacts of irrigation schemes on the functioning of terrestrial and aquatic ecosystems are poorly understood. Here we assess the effects of irrigation agriculture on breakdown of coarse organic matter in soil and water. We measured breakdown rates of alder and holm oak leaves, and of poplar sticks in terrestrial and aquatic sites following a gradient of increasing irrigation agriculture in a semi-arid Mediterranean basin transformed into irrigation agriculture in 50% of its surface. Spatial patterns of stick breakdown paralleled those of leaf breakdown. In soil, stick breakdown rates were extremely low in non-irrigated sites (0.0001-0.0003day-1), and increased with the intensity of agriculture (0.0018-0.0044day-1). In water, stick breakdown rates ranged from 0.0005 to 0.001day-1, and increased with the area of the basin subject to irrigation agriculture. Results showed that irrigation agriculture affects functioning of both terrestrial and aquatic ecosystems, accelerating decomposition of organic matter, especially in soil. These changes can have important consequences for global carbon budgets. © 2013 Elsevier B.V.
Publisher version (URL)http://dx.doi.org/10.1016/j.jhazmat.2013.06.049
Identifiersdoi: 10.1016/j.jhazmat.2013.06.049
issn: 0304-3894
e-issn: 1873-3336
Appears in Collections:(IPE) Artículos
Files in This Item:
File Description SizeFormat 
Arroira_et_al_HAZMAT_2013.pdf492,37 kBAdobe PDFThumbnail
Show full item record
Review this work

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