干旱区生态环境知识资源中心(Arid): Climatic control on the Holocene hydrology of a playa-lake system in the western Mediterranean

Arid

DOI	10.1016/j.catena.2022.106292
	Climatic control on the Holocene hydrology of a playa-lake system in the western Mediterranean
	Garcia-Alix, Antonio; Jimenez-Moreno, Gonzalo; Gazquez, Fernando; Monedero-Contreras, Ricardo; Lopez-Avilles, Alejandro; Jimenez-Espejo, Francisco J.; Rodriguez-Rodriguez, Miguel; Camuera, Jon; Ramos-Roman, Maria Jose; Anderson, R. Scott
通讯作者	Garcia-Alix, A
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2022
卷号	214
英文摘要	Evaporitic lakes such as playa-lakes are characteristic of many arid regions and are unique environments with respect to fauna and flora, while being very vulnerable to climate and environmental fluctuations and threatened by the current global change scenario. Water balance oscillations in these systems can trigger the precipitation or dissolution of different evaporitic minerals, negatively impacting local biodiversity and economic activities. Here, we study the sedimentary record of a small saline pond from a playa-lake complex in southwestern Iberia in order to reconstruct the paleohydrological evolution of this area and assess potential anthropogenic disturbances. The different proxies studied in the-11.9 ky old sedimentary record of the Laguna de la Ballestera suggest that the greatest lake extension and the highest water levels occurred during the Early Holocene, pointing to the wettest period of the record. Climate transitioned towards more arid conditions during the Middle Holocene, and even more dramatically during the Late Holocene. In this last stage the wetland surface and the water level largely diminished and gypsum precipitation gradually increased pointing towards a negative precipitation/ evapotranspiration balance and lowest water levels. Summer desiccation likely occurred under this scenario, especially after-1.0-0.9 cal ky BP coeval with the Medieval Climate Anomaly, when gypsum content started to rise abruptly. However, this significant gypsum precipitation was only associated with a massive drop in the siliciclastic content and scarce carbonates (dolomite and calcite) during the last-400 years. This evidence suggests a shift from a (semi) permanent to a temporal/seasonal hydrological regime. The environmental evolution of this wetland responded to the general climatic evolution of the western Mediterranean during the Holocene, being mostly controlled by changes in insolation. Our data also show that the environmental response of the studied wetland to natural climate variations was only significantly disturbed by human activities since the 20th century, especially in the second half of the century, deduced by abrupt fluctuations in the siliciclastic, gypsum and organic content in the sediments, as well as by the enhanced sedimentary accumulation rates, probably as a response to changes in the hydroperiod of the lake and in the catchment land use.
英文关键词	Paleohydrological evolution Southwestern Iberian Peninsula Saline lakes Aridification
类型	Article
语种	英语
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:000798083700002
WOS关键词	DONANA-NATIONAL-PARK ; SIERRA-NEVADA ; PALEOHYDROLOGICAL EVOLUTION ; ENVIRONMENTAL-CHANGE ; VEGETATION CHANGES ; SURFACE-WATER ; MULTI-PROXY ; VARIABILITY ; SEDIMENTS ; MARINE
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392096
推荐引用方式 GB/T 7714	Garcia-Alix, Antonio,Jimenez-Moreno, Gonzalo,Gazquez, Fernando,et al. Climatic control on the Holocene hydrology of a playa-lake system in the western Mediterranean[J],2022,214.
APA	Garcia-Alix, Antonio.,Jimenez-Moreno, Gonzalo.,Gazquez, Fernando.,Monedero-Contreras, Ricardo.,Lopez-Avilles, Alejandro.,...&Anderson, R. Scott.(2022).Climatic control on the Holocene hydrology of a playa-lake system in the western Mediterranean.CATENA,214.
MLA	Garcia-Alix, Antonio,et al."Climatic control on the Holocene hydrology of a playa-lake system in the western Mediterranean".CATENA 214(2022).