气候变化领域集成服务门户(CCPortal): First high-resolution multi-proxy palaeoenvironmental record of the Late Glacial to Early Holocene transition in the Ría de Arousa (Atlantic margin of NW Iberia)

CCPortal

DOI	10.1016/j.quascirev.2019.05.016
	First high-resolution multi-proxy palaeoenvironmental record of the Late Glacial to Early Holocene transition in the Ría de Arousa (Atlantic margin of NW Iberia)
	García-Moreiras I.; Cartelle V.; García-Gil S.; Muñoz Sobrino C.
发表日期	2019
ISSN	0277-3791
起始页码	308
结束页码	321
卷号	215
英文摘要	A 322-cm-long sedimentary sequence obtained in the shallow marine basin of the Ría de Arousa—a submerged unglaciated river valley on the Atlantic margin of northwestern Iberia—was analysed using a multi-proxy approach to study how climatic and sea level changes affected the coastal ecosystems during the Last Glacial–Interglacial Transition. Past sedimentation, vegetation and marine productivities were inferred from palynological, radiocarbon, seismic and lithological data. A substantial reduction in the pollen and dinoflagellate cyst accumulation rates is observed at ∼12,700 to 11,700 cal a BP, suggesting lower marine and vegetation productivities likely as a response to the Younger Dryas cooling event. Overall, the regional vegetation changed from cold-tolerant open woodlands (Pinus sylvestris/P. nigra and Betula) dominating before ∼10,200 cal a BP to coastal wetlands and the regional spread of Quercus-dominated forests after ∼9800 cal a BP. Cluster analysis and principal component analysis allowed the identification of several small environmental oscillations, such as the 11.4 ka and 10.5 ka cooling events. After that, a conspicuous heath expansion was likely favoured by the palaeotopography, the increased precipitation and the relative sea level rise, which might have caused a profound change in the coastal configuration. Concurrently, both the dinoflagellate cyst and non-pollen palynomorph records reveal variations in the marine productivity and coastal hydrodynamics that also agree with a period of marked marine transgression, warming and increasing river flow. New sedimentary data highlight the high sensitivity of the ria's ecosystems to environmental oscillations and show a close temporal correspondence between terrestrial and marine responses to climate change. © 2019 Elsevier Ltd
英文关键词	Dinoflagellate cysts; Late Pleistocene–Holocene transition; Lithology; Non-pollen palynomorphs; Palaeoclimatology; Pollen; Seismic stratigraphy; Southern Europe; Vegetation dynamics
语种	英语
scopus关键词	Climate change; Cluster analysis; Ecosystems; Glacial geology; Lithology; Productivity; Sea level; Sedimentology; Seismology; Stratigraphy; Vegetation; Wetlands; Dinoflagellate cysts; Holocenes; Palaeoclimatology; Palynomorphs; Pollen; Seismic stratigraphy; Southern Europe; Vegetation dynamics; Principal component analysis; climate variation; coastal wetland; cooling; dinoflagellate cyst; fossil record; glacial-interglacial cycle; Holocene; hydrodynamics; late glacial; lithology; paleoclimate; paleoenvironment; palynomorph; Pleistocene-Holocene boundary; pollen; proxy climate record; sea level change; sedimentary sequence; seismic stratigraphy; vegetation dynamics; Younger Dryas; Atlantic Ocean; Atlantic Ocean (Northeast); Atlantic Ocean (Northwest); Galicia [Spain]; Iberian Peninsula; Ria de Arosa; Rias Bajas; Spain; Betula; Dinophyceae; Quercus
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/151897
作者单位	CIM-UVIGO, Department of Plant Biology and Soil Sciences, Sciences Faculty, Universidade de Vigo, Vigo, E-36310, Spain; School of Earth and Environment, University of Leeds, Leeds, United Kingdom; CIM-UVIGO, Department of Marine Geosciences, Sciences Faculty, Universidade de Vigo, Vigo, E-36310, Spain
推荐引用方式 GB/T 7714	García-Moreiras I.,Cartelle V.,García-Gil S.,et al. First high-resolution multi-proxy palaeoenvironmental record of the Late Glacial to Early Holocene transition in the Ría de Arousa (Atlantic margin of NW Iberia)[J],2019,215.
APA	García-Moreiras I.,Cartelle V.,García-Gil S.,&Muñoz Sobrino C..(2019).First high-resolution multi-proxy palaeoenvironmental record of the Late Glacial to Early Holocene transition in the Ría de Arousa (Atlantic margin of NW Iberia).Quaternary Science Reviews,215.
MLA	García-Moreiras I.,et al."First high-resolution multi-proxy palaeoenvironmental record of the Late Glacial to Early Holocene transition in the Ría de Arousa (Atlantic margin of NW Iberia)".Quaternary Science Reviews 215(2019).