干旱区生态环境知识资源中心(Arid): Response of shallow lakes in the arid-semiarid Pampas of Argentina to Late Holocene hydroclimatic change

Arid

DOI	10.1016/j.quaint.2021.09.016
	Response of shallow lakes in the arid-semiarid Pampas of Argentina to Late Holocene hydroclimatic change
	Seitz, Carina; Velez, Maria, I; Perillo, Gerardo M. E.
通讯作者	Seitz, C (corresponding author), Univ Nacl Sur UNS CONICET, Inst Argentino Oceanog IADO, B8000BFW, RA-8000 Bahia Blanca, Buenos Aires, Argentina.
来源期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
EISSN	1873-4553
出版年	2022
卷号	607 页码:35-47
英文摘要	This study presents a paleolimnological and paleoclimatological reconstruction based on diatoms and phytoliths of four Pampean shallow lakes (from south to north, La Salada, Sauce Grande, Los Chilenos, and Puan) strategically located along a climatic gradient from arid (south) to semiarid conditions (north). This research aims to identify the main drivers and mechanisms of long-term ecological change, and the main climatic mechanisms behind the regional hydroclimatic variability. It was found that these lakes were initially temporary, with clear waters, and eventually, became permanent with turbid waters. We propose that this change is due to an increase in precipitation in the last ca 1000 years, which resulted in higher lake levels and an increase in surface area, leading to an increased fetch and subsequent resuspension of sediment. This climatic amelioration occurred after-910 cal yr BP, first in what is today the arid Pampean region, then in the semiarid region, and finally in the modern humid region at --9cal yr BP (1959 CE). Variations in lake's water level were the main driver of ecological change, followed by salinity (in Puan and La Salada) and nutrient load (in Los Chilenos and Sauce Grande). In general, those lakes on the southwest, located closer to the limit of moisture influence originating in the Pacific and Atlantic oceans (Arid Diagonal) were more sensitive to hydroclimatic changes than those located in the central Pampean region.
英文关键词	Trophic state Turbidity Shallow lakes Pampas Water-level Little ice age
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000718038100004
WOS关键词	AMERICAN MONSOON HISTORY ; WATER-LEVEL FLUCTUATIONS ; ECOLOGICAL GUILDS ; CLIMATE-CHANGE ; SAN-LUIS ; DIATOM ; RECONSTRUCTION ; PALEOENVIRONMENTS ; PRESERVATION ; ASSEMBLAGES
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/2XILL650/374482
作者单位	[Seitz, Carina; Perillo, Gerardo M. E.] Univ Nacl Sur UNS CONICET, Inst Argentino Oceanog IADO, B8000BFW, RA-8000 Bahia Blanca, Buenos Aires, Argentina; [Seitz, Carina] Univ Nacl Sur, Dept Geol, Ave Alem 1253,B8000CPB, Bahia Blanca, Buenos Aires, Argentina; [Velez, Maria, I] Univ Regina, Dept Geol, 3737 Wascana Pkwy, Regina, SK S4S 0A2, Canada
推荐引用方式 GB/T 7714	Seitz, Carina,Velez, Maria, I,Perillo, Gerardo M. E.. Response of shallow lakes in the arid-semiarid Pampas of Argentina to Late Holocene hydroclimatic change[J],2022,607:35-47.
APA	Seitz, Carina,Velez, Maria, I,&Perillo, Gerardo M. E..(2022).Response of shallow lakes in the arid-semiarid Pampas of Argentina to Late Holocene hydroclimatic change.QUATERNARY INTERNATIONAL,607,35-47.
MLA	Seitz, Carina,et al."Response of shallow lakes in the arid-semiarid Pampas of Argentina to Late Holocene hydroclimatic change".QUATERNARY INTERNATIONAL 607(2022):35-47.