干旱区生态环境知识资源中心(Arid): Paleoclimatic and archaeological evidence from Lake Suches for highland Andean refugia during the arid middle-Holocene

Arid

DOI	10.1177/0959683618810405
	Paleoclimatic and archaeological evidence from Lake Suches for highland Andean refugia during the arid middle-Holocene
	Vining, Benjamin R.1; Steinman, Byron A.2; Abbott, Mark B.3; Woods, Arielle 3
通讯作者	Vining, Benjamin R.
来源期刊	HOLOCENE
ISSN	0959-6836
EISSN	1477-0911
出版年	2019
卷号	29 期号:2 页码:328-344
英文摘要	Severe aridity during the mid-Holocene, ca. 8.0-4.0 kyr BP, led to extreme ecological stress in the tropical Andes. Here, we report paleolimnological and archeological data from Lake Suches in southern Peru (70 degrees 24' 12 W, 16 degrees 55' 35 S) spanning 13.6-4.4 kyr BP. Integrated paleoclimate and archeological data reveal that moisture was locally available and the basin served as an ecological refugium throughout the mid-Holocene. Mid-Holocene aridity was established no later than 7.2 kyr BP, with maximum aridity ca. 5.5-4.8 kyr BP. However, water levels in Lake Suches were sustained throughout peak middle-Holocene aridity, even as other systems desiccated. Isotopic enrichment of water in Lake Suches (O-18(lake)) and extensive wetlands (O-18(bofedal)) surrounding the lake indicate prolonged residence time. These reservoirs, combined with elevation-linked hydrographic factors, mitigated mid-Holocene net decreases in atmospheric moisture. Archeological data from Suches indicate successive population increases beginning ca. 11.0-9.8 kyr BP as drier but more stable early Holocene conditions were established regionally. Population maxima in Suches during the mid-Holocene/mid-Archaic period ca. 9.0-7.0 kyr BP coincide with peak aridity in the Titicaca and Atacama systems, as well as documented archeological hiatuses in these regions. Population decreases coincide with peak aridity recorded in Lake Suches ca. 6.0-5.0 kyr BP, but the basin was never fully abandoned. Evidence for refugial microenvironments is key to understanding the persistence of human populations and other endemic Andean flora and fauna during the highly adverse climates of the middle-Holocene. We outline several mechanisms which likely explain the formation of refugia linked to bofedales and hydrographic characteristics of Suches. Understanding refugial dynamics will be key to understanding the effects of past climatic change, as well as addressing current warming and decreased precipitation trends in the tropical Andes.
英文关键词	Andes Archaic period archeology bofedales climate change mid-Holocene arid phase paleoclimate refugia
类型	Article
语种	英语
国家	USA
开放获取类型	Bronze
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000459887400012
WOS关键词	LATE QUATERNARY CLIMATE ; TROPICAL SOUTH-AMERICA ; ATACAMA DESERT ; HUMAN OCCUPATION ; YOUNGER-DRYAS ; ICE-CORE ; LANDSCAPE POSITION ; CHILEAN ALTIPLANO ; NORTHERN CHILE ; HISTORY
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/2XILL650/216125
作者单位	1.Univ Arkansas, Dept Anthropol, Old Main 330, Fayetteville, AR 72701 USA; 2.Univ Minnesota Duluth, Large Lakes Observ, Duluth, MN USA; 3.Univ Pittsburgh, Dept Geol & Environm Sci, Pittsburgh, PA 15260 USA
推荐引用方式 GB/T 7714	Vining, Benjamin R.,Steinman, Byron A.,Abbott, Mark B.,et al. Paleoclimatic and archaeological evidence from Lake Suches for highland Andean refugia during the arid middle-Holocene[J],2019,29(2):328-344.
APA	Vining, Benjamin R.,Steinman, Byron A.,Abbott, Mark B.,&Woods, Arielle.(2019).Paleoclimatic and archaeological evidence from Lake Suches for highland Andean refugia during the arid middle-Holocene.HOLOCENE,29(2),328-344.
MLA	Vining, Benjamin R.,et al."Paleoclimatic and archaeological evidence from Lake Suches for highland Andean refugia during the arid middle-Holocene".HOLOCENE 29.2(2019):328-344.