Arid
DOI10.1016/j.quascirev.2013.05.010
Holocene climate variability, vegetation dynamics and fire regime in the central Pyrenees: the Basa de la Mora sequence (NE Spain)
Perez-Sanz, A.1; Gonzalez-Samperiz, P.1; Moreno, A.1; Valero-Garces, B.1; Gil-Romera, G.1; Rieradevall, M.3,4; Tarrats, P.3,4; Lasheras-Alvarez, L.1; Morellon, M.2; Belmonte, A.5; Sancho, C.5; Sevilla-Callejo, M.1; Navas, A.6
通讯作者Perez-Sanz, A.
来源期刊QUATERNARY SCIENCE REVIEWS
ISSN0277-3791
出版年2013
卷号73页码:149-169
英文摘要

High resolution multiproxy data (pollen, sedimentology, geochemistry, chironomids and charcoal) from the Basa de la Mora (BSM) lake sequence (42 degrees 32’ N, 0 degrees 19’ E, 1914 m a.s.l.) show marked climate variability in the central southern Pyrenees throughout the Holocene. A robust age model based on 15 AMS radiocarbon dates underpins the first precise reconstruction of rapid climate changes during the Holocene from this area. During the Early Holocene, increased winter snowpack and high snowmelt during summer, as a consequence of high seasonality, led to higher lake levels, a chironomid community dominated by non-lacustrine taxa (Orthocladiinae) related to higher inlet streams, and a forested landscape with intense run-off processes in the watershed. From 9.8 to 8.1 cal ka BP, climate instability is inferred from rapid and intense forest shifts and high fluctuation in surface run-off. Shifts among conifers and mesophytes reveal at least four short-lived dry events at 9.7, 9.3, 8.8 and 8.3 cal ka BP. Between 8.1 and 5.7 cal ka BP a stable climate with higher precipitation favoured highest lake levels and forest expansion, with spread of mesophytes, withdrawal of conifers and intensification of fires, coinciding with the Holocene Climate Optimum. At 5.7 cal ka BP a major change leading to drier conditions contributed to a regional decline in mesophytes, expansion of pines and junipers, and a significant lake level drop. Despite drier conditions, fire activity dropped as consequence of biomass reduction. Two arid intervals occurred between 2.9 and 2.4 cal ka BP and at 1.2-0.7 cal ka BP (800-1300 AD). The latter coincides with the Medieval Climate Anomaly and is one of the most arid phases of the Holocene in BSM sequence. Anthropogenic disturbances were small until 700 AD, when human pressure over landscape intensified, with lea cultivation in the lowlands and significant deforestation in highlands. Colder and unfavourable weather conditions during the second part of the Little Ice Age caused a temporary cease of high-land management. The most intense anthropogenic disturbances occurred during the second half of 19th century. Last decades are characterized by recovery of the vegetation cover as a result of land abandonment, and lowered lake levels, probably due to higher temperatures. (C) 2013 Elsevier Ltd. All rights reserved.


英文关键词Holocene Central Pyrenees Climate evolution Vegetation history Palaeohydrology Fire Abrupt changes
类型Article
语种英语
国家Spain
收录类别SCI-E
WOS记录号WOS:000322356400011
WOS关键词MESOLITHIC-NEOLITHIC TRANSITION ; MULTI-PROXY ANALYSIS ; REALES NATURAL PARK ; CENTRAL EBRO BASIN ; MIDHOLOCENE VEGETATION ; IBERIAN PENINSULA ; HUMAN IMPACT ; MEDITERRANEAN REGION ; ENVIRONMENTAL-CHANGE ; LANDSCAPE EVOLUTION
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/179638
作者单位1.CSIC, Inst Pirenaico Ecol, Zaragoza 50059, Spain;
2.Univ Complutense, CSIC, Inst Geociencias, Fac Ciencias Geol,UCM, E-28040 Madrid, Spain;
3.Univ Barcelona, Dept Ecol, Fac Biol, Grp Recerca FEM Freshwater Ecol & Management, E-08028 Barcelona, Spain;
4.Univ Barcelona, Dept Ecol, Fac Biol, IRBio Inst Recerca Biodiversitat, E-08028 Barcelona, Spain;
5.Univ Zaragoza, Dept Ciencias Tierra, E-50009 Zaragoza, Spain;
6.CSIC, Estn Expt Aula dei, Zaragoza 50059, Spain
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Perez-Sanz, A.,Gonzalez-Samperiz, P.,Moreno, A.,et al. Holocene climate variability, vegetation dynamics and fire regime in the central Pyrenees: the Basa de la Mora sequence (NE Spain)[J],2013,73:149-169.
APA Perez-Sanz, A..,Gonzalez-Samperiz, P..,Moreno, A..,Valero-Garces, B..,Gil-Romera, G..,...&Navas, A..(2013).Holocene climate variability, vegetation dynamics and fire regime in the central Pyrenees: the Basa de la Mora sequence (NE Spain).QUATERNARY SCIENCE REVIEWS,73,149-169.
MLA Perez-Sanz, A.,et al."Holocene climate variability, vegetation dynamics and fire regime in the central Pyrenees: the Basa de la Mora sequence (NE Spain)".QUATERNARY SCIENCE REVIEWS 73(2013):149-169.
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