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<datestamp>2018-01-11</datestamp>
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<publisher>HAL CCSD</publisher>
<title lang=en>An 18 000-year pollen and sedimentary record from the cedar forests of the Middle Atlas, Morocco</title>
<creator>Nour el baït, M.</creator>
<creator>Rhoujjati, A.</creator>
<creator>Eynaud, F.</creator>
<creator>Benkaddour, A.</creator>
<creator>Dezileau, Laurent</creator>
<creator>Wainer, K.</creator>
<creator>Goslar, T.</creator>
<creator>Khater, C.</creator>
<creator>Tabel, J.</creator>
<creator>Cheddadi, R.</creator>
<contributor>Institut des Sciences de l'Evolution [Montpellier] (ISEM) ; Université de Montpellier (UM) - Institut de recherche pour le développement [IRD] : UR226 - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Faculté des Sciences et Techniques Marrakech</contributor>
<contributor>UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC) ; Observatoire aquitain des sciences de l'univers (OASU) ; Université Sciences et Technologies - Bordeaux 1 - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS) - Université Sciences et Technologies - Bordeaux 1 - Institut national des sciences de l'Univers (INSU - CNRS) - Centre National de la Recherche Scientifique (CNRS) - École pratique des hautes études (EPHE) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Risques ; Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Department of Earth Sciences, Oxford University</contributor>
<contributor>Faculty of Physics [Poznań] ; Adam Mickiewicz University in Poznań (UAM)</contributor>
<contributor>National Council for Scientific Research in Lebanon, Beirut</contributor>
<source>ISSN: 0267-8179</source>
<source>EISSN: 1099-1417</source>
<source>Journal of Quaternary Science</source>
<publisher>Wiley-Blackwell</publisher>
<publisher>Wiley</publisher>
<identifier>hal-01122848</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01122848</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01122848</source>
<source>Journal of Quaternary Science, Wiley, 2014, 29 (5), pp.423-432. 〈10.1002/jqs.2708〉</source>
<identifier>DOI : 10.1002/jqs.2708</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1002/jqs.2708</relation>
<language>en</language>
<subject lang=en>Cedrus atlantica</subject>
<subject lang=en>climate</subject>
<subject lang=en>Holocene</subject>
<subject lang=en>Lateglacial</subject>
<subject lang=en>Morocco</subject>
<subject lang=en>vegetation</subject>
<subject>[SDE.BE] Environmental Sciences/Biodiversity and Ecology</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>A new record from the heart of the Moroccan Middle Atlas cedar forests spans the last 18 000 years and provides valuable insight into our understanding of the natural vegetation and environmental changes. The approach is based on the study of pollen content, geochemical elements and grain size analysis. The pollen data indicate that the vegetation was dominated by herbaceous plants until 9000 BP. Such open landscape allowed greater soil erosion and an input of chemical elements from the watershed. After 9000 BP, tree cover, mainly oak, increased slightly and was accompanied by a higher taxonomic diversity. However, several steppe elements remain well represented in the area until 5000 BP, which suggests that the climate was rather dry during the first part of the Holocene. After 6000 BP, the climate became more favourable to expansion of the forest ecosystems, including Cedrus atlantica, thereby reducing erosion. A strong reduction of the tree pollen percentages is recorded after 2000 BP, which may be related to increasing human activities during the Roman period. These forest changes are concomitant with an increase of lead and copper concentrations in the record, probably related to Roman metalworking activities.</description>
<date>2014-07</date>
</dc>
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