globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2013.01.021
论文题名:
Environmental variability in northern Tanzania from AD 1000 to 1800, as inferred from diatoms and pollen in Lake Duluti
作者: Öberg H.; Norström E.; Malmström Ryner M.; Holmgren K.; Westerberg L.-O.; Risberg J.; Eddudóttir S.D.; Andersen T.J.; Muzuka A.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 374
起始页码: 230
结束页码: 241
语种: 英语
英文关键词: Crater lake ; Diatoms ; Paleolimnology ; Pollen ; Tanzania
英文摘要: Fossil pollen and diatoms have been analyzed in a sediment sequence from a topographically closed crater lake in northern Tanzania (Lake Duluti), with the aim to reconstruct past changes in lake level and vegetation dynamics. The results provide a new paleoenvironmental record from equatorial Africa covering the period c. AD 1000 to AD 1800. Overall, the pollen and diatom records generate comparable stories of dry and wet periods. Dry conditions are inferred at c. AD 1040-1470, c. AD 1510-1640 and c. AD 1650-1670 with the lowest lake levels at c. AD 1260-1290 and AD 1600-1640. Wetter conditions occurred c. AD 1640-1650 and c. AD 1670-1790. The chronology is based on combined analyses of 210Pb activity and AMS 14C on bulk sediment, and a Bayesian model was applied to establish the age-depth relationship. The hydroclimatic record from Lake Duluti shows good correlation with several East African lakes in a centennial time perspective, although comparison of high frequency variability in the region is hampered by dating uncertainties. © 2013 Elsevier B.V.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69790
Appears in Collections:过去全球变化的重建

Files in This Item:

There are no files associated with this item.


作者单位: Bert Bolin Centre for Climate Research, Department of Physical Geography and Quaternary Geology, Stockholm University, 10691 Stockholm, Sweden; Department of Geography and Geology, University of Copenhagen, Øster Voldgade 10, 1350 Copenhagen K, Denmark; Institute of Marine Science, University of Dar es Salaam, PO Box 668, Zanzibar, Tanzania

Recommended Citation:
Öberg H.,Norström E.,Malmström Ryner M.,et al. Environmental variability in northern Tanzania from AD 1000 to 1800, as inferred from diatoms and pollen in Lake Duluti[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,374
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Öberg H.]'s Articles
[Norström E.]'s Articles
[Malmström Ryner M.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Öberg H.]'s Articles
[Norström E.]'s Articles
[Malmström Ryner M.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Öberg H.]‘s Articles
[Norström E.]‘s Articles
[Malmström Ryner M.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.