DOI: 10.1016/j.quascirev.2016.06.011
Scopus记录号: 2-s2.0-84975468175
论文题名: Holocene dynamics of vegetation change in southern and southeastern Brazil is consistent with climate forcing
作者: Rodrigues J.M. ; Behling H. ; Giesecke T.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 146 起始页码: 54
结束页码: 65
语种: 英语
英文关键词: Eastern South America
; Holocene
; Pollen
; South American Monsoon
; Synchronous changes
; Vegetation dynamics
Scopus关键词: Atmospheric thermodynamics
; Dynamics
; Vegetation
; Holocenes
; Pollen
; South America
; South American Monsoon
; Synchronous changes
; Vegetation dynamics
; Climate change
; climate change
; climate forcing
; Holocene
; hydrology
; monsoon
; pollen
; precipitation (climatology)
; synchrony
; uncertainty analysis
; vegetation dynamics
; Atlantic Ocean
; Brazil
; Cariaco Basin
; Caribbean Sea
英文摘要: At mid to high northern latitudes postglacial vegetation change has often occurred synchronously over large regions triggered mainly by abrupt climate change. Based on 19 pollen diagrams from southern and southeastern Brazil we explore if similar synchronicities in vegetation change were also characteristic for the vegetation dynamics in low latitudes. We used sequence splitting to detect past vegetation change in the pollen diagrams and computed principal curves and rates of change to visually evaluate the changes in composition and dynamics. The results show that vegetation change occurred mostly during the second half of the Holocene with distinct episodes of change. The character of vegetation change is generally consistent with shifts to wetter conditions and agrees with inferred shifts of the South American Monsoon. Speleothems as well as the titanium record from the Cariaco Basin indicate several episodes of rapid shifts in the precipitation regime, which are within the dating uncertainty of the here detected periods of vegetation change (8900, 5900, 2800, 1200 and 550 cal yrs BP). Our results indicate that low latitude vegetation composition follows precession forcing of the hydrology, while change is often triggered and synchronized by rapid climate change much like in high and mid latitudes. Pollen diagrams document changes in the abundance of individual taxa and changes in the amount of woodland cover, while small compositional changes indicate a regional stability of vegetation types during the Holocene. © 2016 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59529
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Palynology and Climate Dynamics, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University of Göttingen, Untere Karspüle 2, Göttingen, Germany
Recommended Citation:
Rodrigues J.M.,Behling H.,Giesecke T.. Holocene dynamics of vegetation change in southern and southeastern Brazil is consistent with climate forcing[J]. Quaternary Science Reviews,2016-01-01,146