DOI: 10.1016/j.quascirev.2013.02.016
Scopus记录号: 2-s2.0-84875550808
论文题名: Ungulate diversity and precipitation history since the Last Glacial Maximum in the Western Cape, South Africa
作者: Faith J.T.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 68 起始页码: 191
结束页码: 199
语种: 英语
英文关键词: Aridity
; Diversity
; Paleoclimate
; Southern Africa
; Summer rainfall
; Winter rainfall
Scopus关键词: Aridity
; Diversity
; Paleoclimates
; Southern Africa
; Summer rainfall
; Winter rainfall
; Glacial geology
; Lasers
; Sea ice
; Rain
; aridity
; fossil assemblage
; Last Glacial Maximum
; late glacial
; paleoclimate
; paleoecology
; paleoenvironment
; precipitation (climatology)
; rainfall
; species diversity
; ungulate
; South Africa
; Western Cape
; Ungulata
英文摘要: This study reviews the precipitation history of the winter and year-round rainfall zones in the Western Cape (South Africa) in light of its fossil ungulate communities. Fossil sequences spanning the Last Glacial Maximum (LGM) and Lateglacial through the Holocene document a decline in ungulate richness through time. Based on the observed relationship between ungulate community richness and annual precipitation in Southern and East Africa, this implies increased effective precipitation during the LGM-Lateglacial at sites located in both the winter and year-round rainfall zones. These results are consistent with other lines of paleoenvironmental evidence from the winter rainfall zone, although they contradict records from the year-round rainfall zone that have been interpreted as reflecting aridity. A critical review of these records suggests that the patterns interpreted in terms of aridity can be explained by other mechanisms, including vegetation change. Current evidence is consistent with paleoclimatic models indicating that altered rainfall patterns during the LGM-Lateglacial were primarily related to the position of westerly frontal systems, which were displaced northward due to the expansion of Antarctic sea ice. Seasonal migration of these systems resulted in an expanded winter rainfall zone across much of southwestern Africa, but perhaps with some summer rains reaching the southern coast. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60664
Appears in Collections: 过去全球变化的重建
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作者单位: School of Social Science, University of Queensland, Brisbane, QLD 4072, Australia
Recommended Citation:
Faith J.T.. Ungulate diversity and precipitation history since the Last Glacial Maximum in the Western Cape, South Africa[J]. Quaternary Science Reviews,2013-01-01,68