globalchange  > 气候减缓与适应
DOI: 10.1016/j.quascirev.2017.11.016
Scopus记录号: 2-s2.0-85036647164
论文题名:
Early Holocene humidity patterns in the Iberian Peninsula reconstructed from lake, pollen and speleothem records
作者: Morellón M.; Aranbarri J.; Moreno A.; González-Sampériz P.; Valero-Garcés B.L.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 181
起始页码: 1
结束页码: 18
语种: 英语
英文关键词: Aridity ; Early Holocene ; Inner Iberian Peninsula ; Lake records ; Palaeohydrology ; Pollen ; Speleothems ; Summer insolation maximum ; Vegetation changes
Scopus关键词: Climate change ; Forestry ; Glacial geology ; Incident solar radiation ; Lakes ; Moisture ; Solar radiation ; Vegetation ; Aridity ; Early Holocene ; Iberian Peninsula ; Palaeohydrology ; Pollen ; Speleothems ; Summer insolation maximum ; Vegetation change ; Climate models ; aridity ; climate conditions ; historical record ; Holocene ; humidity ; lacustrine environment ; landscape change ; paleoclimate ; paleohydrology ; pollen ; reconstruction ; spatial resolution ; speleothem ; summer ; vegetation dynamics ; Younger Dryas ; Alboran ; Almeria [Andalucia] ; Andalucia ; Arctic ; Atlantic Ocean ; Atlantic Ocean (North) ; Greenland ; Greenland Ice Sheet ; Iberian Peninsula ; Mediterranean Sea ; Spain ; Coniferophyta
英文摘要: Comparison of selected, well-dated, lacustrine, speleothem and terrestrial pollen records spanning the Holocene onset and the Early Holocene (ca. 11.7–8 cal kyrs BP) in the Iberian Peninsula shows large hydrological fluctuations and landscape changes with a complex regional pattern in timing and intensity. Marine pollen records from Alboran, the Mediterranean and off shore Atlantic sites show a step-wise increase in moisture and forest during this transition. However, available continental records point to two main patterns of spatial and temporal hydrological variability: i) Atlantic-influenced sites located at the northwestern areas (Enol, Sanabria, Lucenza, PRD-4), characterized by a gradual increase in humidity from the end of the Younger Dryas to the Mid Holocene, similarly to most North Atlantic records; and ii) continental and Mediterranean-influenced sites (Laguna Grande, Villarquemado, Fuentillejo, Padul, Estanya, Banyoles, Salines), with prolonged arid conditions of variable temporal extension after the Younger Dryas, followed by an abrupt increase in moisture at 10-9 cal kyrs BP. Different local climate conditions influenced by topography or the variable sensitivity (gradual versus threshold values) of the proxies analyzed in each case are evaluated. Vegetation composition (conifers versus mesothermophilous taxa) and resilience would explain a subdued response of vegetation in central continental areas while in Mediterranean sites, insufficient summer moisture availability could not maintain high lake levels and promote mesophyte forest, in contrast to Atlantic-influenced areas. Comparison with available climate models, Greenland ice cores, North Atlantic marine sequences and continental records from Central and Northern Europe and the whole Mediterranean region underlines the distinctive character of the hydrological changes occurred in inner Iberia throughout the Early Holocene. The persistent arid conditions might be explained by the intensification of the summer drought due to the high seasonality contrast at these latitudes caused by the orbital-induced summer insolation maximum. New records, particularly from western and southernmost Iberia, and palaeoclimate models with higher spatial resolution would help to constrain these hypotheses. © 2017 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112310
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作者单位: CITIMAC, Facultad de Ciencias, University of Cantabria, Avenida de los Castros s/n, Santander, Cantabria 39005, Spain; Department of Geography, Prehistory and Archaeology, University of Basque Country, C/ Tomás y Valiente s/n, Vitoria-Gasteiz, Basque Country 01006, Spain; Department of Geoenvironmental Processes and Global Change, Pyrenean Institute of Ecology (IPE) – CSIC, Avenida Montañana, Zaragoza, 1005, Spain

Recommended Citation:
Morellón M.,Aranbarri J.,Moreno A.,et al. Early Holocene humidity patterns in the Iberian Peninsula reconstructed from lake, pollen and speleothem records[J]. Quaternary Science Reviews,2018-01-01,181
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