气候变化领域集成服务门户(CCPortal): Linking Holocene vegetation dynamics; palaeoclimate variability and depositional patterns in coastal successions: Insights from the Po Delta plain of northern Italy

CCPortal

DOI	10.1016/j.palaeo.2019.109468
	Linking Holocene vegetation dynamics; palaeoclimate variability and depositional patterns in coastal successions: Insights from the Po Delta plain of northern Italy
	Cacciari M.; Amorosi A.; Marchesini M.; Kaniewski D.; Bruno L.; Campo B.; Rossi V.
发表日期	2020
ISSN	0031-0182
卷号	538
英文摘要	Mediterranean deltaic-coastal plains represent relatively underexplored depositional archives that record the Holocene response of vegetation and depositional systems to high-frequency climate changes. In this study, we examine a 25 m-thick succession of Holocene age (core EM2) recovered in the innermost portion of the Po delta plain of northern Italy, applying an integrated palyno-stratigraphic approach. The existence of a paludal, freshwater setting inland of the line of maximum marine transgression favoured a low degree of pollen transportation. Application of cluster analysis to this palynological record leads to the identification of pollen-derived biomes and seven (auto)ecological groups of taxa that discriminate environmental signal (depositional facies) and regional climate conditions within a well-dated coastal record. Percentage variations of hygrophytes, aquatics and pasture-meadow herbs reveal local environmental dynamics, enabling the detailed facies characterisation of the cored succession, especially in terms of water table conditions. Framed into a chronologically constrained, high-resolution facies context, the proportion of montane taxa (climate degradation indicator) relative to Mediterranean taxa and Quercus + other deciduous trees (climate optimum indicators) highlight a vegetation-climate variability in the plain that fits with Bond events, especially for the early-mid Holocene (i.e., Preboreal and Boreal Oscillation, 8.2 ka event), supporting a strong Mediterranean–North Atlantic climate connection. For the first time, pollen from a continental succession of the Adriatic area clearly depicts the effects of the 8.2 ka cooling event on vegetation patterns (progressive degradation in high altitude communities) and depositional dynamics (increased fluvial activity), assessing the major role played by climate changes in shaping coastal landscapes in addition to glacio-eustatic variations. © 2019 Elsevier B.V.
英文关键词	8.2 ka event; Adriatic area; Freshwater swamp; Palaeoenvironment; Palynology
语种	英语
scopus关键词	biostratigraphy; climate variation; coastal plain; deltaic deposit; depositional environment; Holocene; paleoclimate; paleoenvironment; palynology; swamp; transgression; vegetation dynamics; Atlantic Ocean; Atlantic Ocean (North); Italy; Po Delta; Veneto; Quercus
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150665
作者单位	Dipartimento di Scienze Biologiche, Geologiche e Ambientali, University of Bologna, via Zamboni 67, Bologna, 40127, Italy; Department of Human and Social Sciences, University of Ferrara, via Ercole I d'Este 32, Ferrara, 44121, Italy; Université Paul Sabatier-Toulouse 3, EcoLab (Laboratoire d'Ecologie Fonctionnelle et Environnement), 118 Route de Narbonne, Toulouse, cedex 9, 31062, France; Department of Chemical and Geological Sciences, University of Modena, via Campi 103, Modena, 44125, Italy
推荐引用方式 GB/T 7714	Cacciari M.,Amorosi A.,Marchesini M.,et al. Linking Holocene vegetation dynamics; palaeoclimate variability and depositional patterns in coastal successions: Insights from the Po Delta plain of northern Italy[J],2020,538.
APA	Cacciari M..,Amorosi A..,Marchesini M..,Kaniewski D..,Bruno L..,...&Rossi V..(2020).Linking Holocene vegetation dynamics; palaeoclimate variability and depositional patterns in coastal successions: Insights from the Po Delta plain of northern Italy.Palaeogeography, Palaeoclimatology, Palaeoecology,538.
MLA	Cacciari M.,et al."Linking Holocene vegetation dynamics; palaeoclimate variability and depositional patterns in coastal successions: Insights from the Po Delta plain of northern Italy".Palaeogeography, Palaeoclimatology, Palaeoecology 538(2020).