Arid
DOI10.1016/j.palaeo.2007.10.005
Vegetation changes and hydrological fluctuations in the Central Ebro Basin (NE Spain) since the Late Glacial period: Saline lake records
Gonzalez-Samperiz, Penelope1; Valero-Garces, Blas L.1; Moreno, Ana1; Morellon, Mario1; Navas, Ana2; Machin, Javier2; Delgado-Huertas, Antonio3
通讯作者Gonzalez-Samperiz, Penelope
来源期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
EISSN1872-616X
出版年2008
卷号259期号:2-3页码:157-181
英文摘要

Although the Central Ebro Basin (northeastern Iberian Peninsula) is both the northernmost semi-arid area in Europe and one of the regions with the largest biodiversity, it has been insufficiently studied in terms of past climate variability due to the scarcity of suitable sites for palaeoenvironmental analyses. Previous studies from ephemeral saline lakes in the area, mainly based on palynological data, show abrupt and rapid arid/humid transitions throughout the last glacial cycle highlighting a complex palaeohydrological evolution. New cores from two saline lakes (La Playa and La Salineta) in the Los Monegros area provide multiproxy records, including sedimentology, geochemistry, and pollen indicators. This study, together with a detailed review of the main saline records from the Central Ebro Basin, enables us to reconstruct the main features of the palaeoclimate evolution during the last glacial cycle. One of the main results of this study is the alternation of humid and dry phases as a characteristic of the climate evolution during the Late Glacial. Additionally, the study suggests an important role of the increased flow from the Pyrenean rivers during deglaciation in the hydrological balance of the Central Ebro Basin. The early Holocene is the wettest period of the studied sequences contrasting with the aridity of the middle Holocene interval, which is frequently absent as a result of intense aeolian erosive processes. The lack of archaeological remains associated with the middle Holocene (Neolithic) also supports increased aridity that would have impeded human settlements. Although anthropogenic activity partially masks the climate signal from the palynological data in the uppermost part of the studied sequences, there is some sedimentological evidence for a climate change during the last 2000 yr resulting in a recovery of average saline lake levels in the Central Ebro Basin. (c) 2007 Elsevier B.V. All rights reserved.


英文关键词playa-lake systems palynology sedimentology palaeohydrological fluctuations vegetation cover
类型Article ; Proceedings Paper
语种英语
国家Spain
收录类别SCI-E ; CPCI-S
WOS记录号WOS:000254695400006
WOS关键词HOLOCENE CLIMATIC-CHANGE ; ENVIRONMENTAL-CHANGE ; SOUTHERN EUROPE ; SALADA-MEDIANA ; LOS MONEGROS ; PLAYA-LAKE ; POLLEN ; EVOLUTION ; VARIABILITY ; GROUNDWATER
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向Physical Geography ; Geology ; Paleontology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/158752
作者单位1.CSIC, Inst Pirena Ecol, E-50080 Zaragoza, Spain;
2.CSIC, Estac Expt Aula Dei, E-50080 Zaragoza, Spain;
3.CSIC, Estac Expt Zaidin, E-18008 Zaragoza, Spain
推荐引用方式
GB/T 7714
Gonzalez-Samperiz, Penelope,Valero-Garces, Blas L.,Moreno, Ana,et al. Vegetation changes and hydrological fluctuations in the Central Ebro Basin (NE Spain) since the Late Glacial period: Saline lake records[J],2008,259(2-3):157-181.
APA Gonzalez-Samperiz, Penelope.,Valero-Garces, Blas L..,Moreno, Ana.,Morellon, Mario.,Navas, Ana.,...&Delgado-Huertas, Antonio.(2008).Vegetation changes and hydrological fluctuations in the Central Ebro Basin (NE Spain) since the Late Glacial period: Saline lake records.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,259(2-3),157-181.
MLA Gonzalez-Samperiz, Penelope,et al."Vegetation changes and hydrological fluctuations in the Central Ebro Basin (NE Spain) since the Late Glacial period: Saline lake records".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 259.2-3(2008):157-181.
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