气候变化领域集成服务门户(CCPortal): Recent climatic and anthropogenic impacts on endemic species in southwestern Morocco

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DOI	10.1016/j.quascirev.2019.105889
	Recent climatic and anthropogenic impacts on endemic species in southwestern Morocco
	Zhao X.; Dupont L.; Cheddadi R.; Kölling M.; Reddad H.; Groeneveld J.; Ain-Lhout F.Z.; Bouimetarhan I.
发表日期	2019
ISSN	0277-3791
卷号	221
英文摘要	Morocco is an area subject to recurrent severe droughts, desertification and an increasing land degradation. It is within a Mediterranean hotspot of biodiversity as it harbors many threatened endemic species such as the argan tree (Argania spinosa). In this context, past climate records are needed to analyze the impact of climate variability on the occurrence and future persistence of these endemic species. In order to evaluate the impact of past climate changes on the endemic Argan tree in southern Morocco, we reconstructed its modern range using an extensive pollen dataset. The modern pollen distribution off southwestern Morocco was then utilized to interpret the high-resolution pollen record with complementary micro-charcoal and XRF element records from a marine sediment core GeoB8601-3 off Cape Ghir in southwestern Morocco covering the last three millennia. This multi-proxy study has shown clear evidence of wetter conditions resulting in higher fluvial input which could be correlated with a negative mode of the North Atlantic Oscillation (NAO), in contrast to the published pollen and XRF element records from another nearby core that showed limited effect of climate changes. On the other hand, clear opposite trend between the pollen occurrences of Argania spinosa and the fire frequency was observed throughout our fossil record. The increase of Argania spinosa pollen occurrences, along with herbaceous taxa, and lower fire frequency might suggest an increase in human impact on the landscape leading to a sparse vegetation cover and subsequently increased erosion. The reconstructed pollen-based vegetation, micro-charcoal-based fire activities and geochemical changes in our marine record suggest interplay of climate and anthropogenic effects on the landscape. © 2019 Elsevier Ltd
英文关键词	Argan tree; Climate change; Human impact; Late Holocene; Pollen; Southwestern Morocco; Vegetation change
语种	英语
scopus关键词	Atmospheric pressure; Biodiversity; Charcoal; Forestry; Submarine geology; Vegetation; Argan tree; Human impact; Late Holocene; Pollen; Southwestern Morocco; Vegetation change; Climate change; anthropogenic effect; biodiversity; climate change; endemic species; fossil record; Holocene; marine record; marine sediment; North Atlantic Oscillation; pollen; vegetation cover; Morocco; Argania spinosa
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151781
作者单位	MARUM-Center for Marine Environmental Sciences, University of Bremen, Leobener Straße, Bremen, D-28359, Germany; University of Montpellier II, CNRS-UM2-IRD, ISEM, France; Faculté des lettres et des sciences humaines, University Sultan Moulay Slimane of Beni Mellal, Morocco; Faculté des sciences appliquées, Campus Universitaire Ait Melloul, Ibn Zohr University of Agadir, Agadir, Morocco
推荐引用方式 GB/T 7714	Zhao X.,Dupont L.,Cheddadi R.,et al. Recent climatic and anthropogenic impacts on endemic species in southwestern Morocco[J],2019,221.
APA	Zhao X..,Dupont L..,Cheddadi R..,Kölling M..,Reddad H..,...&Bouimetarhan I..(2019).Recent climatic and anthropogenic impacts on endemic species in southwestern Morocco.Quaternary Science Reviews,221.
MLA	Zhao X.,et al."Recent climatic and anthropogenic impacts on endemic species in southwestern Morocco".Quaternary Science Reviews 221(2019).