000089685 001__ 89685
000089685 005__ 20200616155052.0
000089685 0247_ $$2doi$$a10.1016/j.scitotenv.2018.05.343
000089685 0248_ $$2sideral$$a117684
000089685 037__ $$aART-2018-117684
000089685 041__ $$aeng
000089685 100__ $$aPuy, Arnald
000089685 245__ $$aDetection of sand encroachment patterns in desert oases. The case of Erg Chebbi (Morocco)
000089685 260__ $$c2018
000089685 5060_ $$aAccess copy available to the general public$$fUnrestricted
000089685 5203_ $$aDesert oases are fragile agrarian areas, very vulnerable to sand encroachment by wind. Ensuring their conservation highly depends on our capacity to identify sand encroachment patterns, e.g. the origin of sand and its spatial distribution in the irrigated plots. Here we show how to tackle this issue using the case study of Erg Chebbi (Morocco), where two oases (Hassilabiad and Merzouga) are surrounded by dunes, Hamada and alluvial sediments from the Wadi Ziz. We combine field interviews with the study of wind dynamics, sediment sampling, Particle Size Distribution (PSD) tests and End-Member Modelling Analysis (EMMA). We observe that the most relevant contributor to sand encroachment is the Wadi Ziz (30\%), followed by the Hamada (28\%), an undetermined source of dust (25\%), and the Erg dunes (16\%). These genetically different sediments cluster unevenly in the oases, indicating the existence of areas with contrasting degrees of exposure to sedimentary sources. The results allow to define on solid grounds which sand source areas should be stabilized first in order to obtain the greatest reduction in sand encroachment. Our approach also provides policy-makers with better tools to identify which spots are specially vulnerable to accumulate a specific sediment, thus allowing for a more nuanced management of sand in oasis environments.
000089685 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000089685 590__ $$a5.589$$b2018
000089685 591__ $$aENVIRONMENTAL SCIENCES$$b27 / 250 = 0.108$$c2018$$dQ1$$eT1
000089685 592__ $$a1.536$$b2018
000089685 593__ $$aEnvironmental Chemistry$$c2018$$dQ1
000089685 593__ $$aWaste Management and Disposal$$c2018$$dQ1
000089685 593__ $$aPollution$$c2018$$dQ1
000089685 593__ $$aEnvironmental Engineering$$c2018$$dQ1
000089685 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000089685 700__ $$aHerzog, Manuel
000089685 700__ $$0(orcid)0000-0002-4624-2115$$aEscriche, Pedro$$uUniversidad de Zaragoza
000089685 700__ $$aMarouche, Amou
000089685 700__ $$aOubana, Yousef
000089685 700__ $$aBubenzer, Olaf
000089685 7102_ $$14009$$2775$$aUniversidad de Zaragoza$$bDpto. Psicología y Sociología$$cÁrea Sociología
000089685 773__ $$g642 (2018), 241-249$$pSci. total environ.$$tScience of the Total Environment$$x0048-9697
000089685 8564_ $$s1684229$$uhttps://zaguan.unizar.es/record/89685/files/texto_completo.pdf$$yPostprint
000089685 8564_ $$s308287$$uhttps://zaguan.unizar.es/record/89685/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000089685 909CO $$ooai:zaguan.unizar.es:89685$$particulos$$pdriver
000089685 951__ $$a2020-06-16-13:44:54
000089685 980__ $$aARTICLE