Holocene history of peatland communities of central Rif (Northern Morocco)

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios Pub Date : 2022-02-01 DOI:10.1016/j.geobios.2021.12.001

Serge D. Muller , Amina Daoud-Bouattour , Séverine Fauquette , Marion Bottollier-Curtet , Nabil Rifai , Mary Robles , Er-Riyahi Saber , Mohammed El Madihi , Saïd Moukrim , Laila Rhazi

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引用次数: 2

Abstract

The Maghreb’s Mediterranean coastal edge is home to many peatlands with boreal floristic affinities and high conservation value. This work aims at investigating the Holocene developmental history of these wetlands in Northern Morocco, based on pollen record, loss-on-ignition and radiocarbon dating. First, the comparison between modern pollen spectra and present-day hydrophytic vegetation makes it possible to identify the local pollen signal. Second, while peatlands have existed in the Rif for at least 13,000 years, their initiation mostly by paludification extends throughout the Holocene. Their plant composition remains relatively unchanged for millennia, but swamp undergrowth could locally experience changes in taxa dominance. Mid- to late-Holocene sedimentation changes appear to result from the human-induced regional decline of cedar. The major changes experienced by wetlands occurred recently, due to clearing, burning and overgrazing. Effective conservation policies should be urgently implemented in order to save the last relict peatlands of Northern Morocco.

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里夫中部泥炭地群落的全新世历史（摩洛哥北部）

马格里布的地中海沿岸是许多泥炭地的家园，具有北方植物群的相似性和很高的保护价值。本研究旨在通过花粉记录、燃烧损失和放射性碳测年研究摩洛哥北部这些湿地的全新世发育历史。首先，将现代花粉谱与现代水生植被进行比较，使局部花粉信号的识别成为可能。其次，尽管泥炭地在裂谷中存在了至少13000年，但泥炭地的形成主要是由泥化作用延续到整个全新世。它们的植物组成几千年来保持相对不变，但沼泽灌木丛可能在局部经历类群优势的变化。全新世中期至晚期的沉积变化似乎是人类活动引起的杉木区域减少的结果。由于砍伐、焚烧和过度放牧，湿地的主要变化发生在最近。应紧急执行有效的保护政策，以拯救摩洛哥北部最后的残余泥炭地。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geobios 地学-古生物学

CiteScore

3.30

自引率

6.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Geobios publishes bimonthly in English original peer-reviewed articles of international interest in any area of paleontology, paleobiology, paleoecology, paleobiogeography, (bio)stratigraphy and biogeochemistry. All taxonomic groups are treated, including microfossils, invertebrates, plants, vertebrates and ichnofossils. Geobios welcomes descriptive papers based on original material (e.g. large Systematic Paleontology works), as well as more analytically and/or methodologically oriented papers, provided they offer strong and significant biochronological/biostratigraphical, paleobiogeographical, paleobiological and/or phylogenetic new insights and perspectices. A high priority level is given to synchronic and/or diachronic studies based on multi- or inter-disciplinary approaches mixing various fields of Earth and Life Sciences. Works based on extant data are also considered, provided they offer significant insights into geological-time studies.