Arid
DOI10.1017/qua.2017.48
Lowland forest collapse and early human impacts at the end of the African Humid Period at Lake Edward, equatorial East Africa
Ivory, Sarah J.1,2; Russell, James1
通讯作者Ivory, Sarah J.
来源期刊QUATERNARY RESEARCH
ISSN0033-5894
EISSN1096-0287
出版年2018
卷号89期号:1页码:7-20
英文摘要

In Africa, the early Holocene was characterized by wetter, warmer conditions than today, followed by rapid aridification at similar to 5.2 ka. However, a lack of lowland vegetation records has prevented a detailed evaluation of forest response to Holocene climate change. Additionally, although modern vegetation communities are linked to human disturbance, few studies have addressed how prehistoric human activities helped engineer the character of modern African ecosystems. Understanding the architecture of lowland and highland forests is important to prevent further degradation from climate/land-use change. We present an 11,000 yr fossil pollen record from Lake Edward, Uganda. We show that Guineo-Congolian forests dominated the highlands and lowlands in equatorial East Africa in the early Holocene, highlighting the importance of rainfall and temperature in controlling forest communities. These forests remained until similar to 5.2 ka, when the climate became drier. The lacustrine ecosystem response to aridification was abrupt; however, forest decreased gradually, replaced by deciduous woodlands. Woodlands dominated until after an arid period at 2 ka; however, forest did not recover. Increased disturbance indicators and grasses suggest that the arrival of Iron Age people resulted in the modern fire-tolerant vegetation. Although late Holocene climate played a role in vegetation opening, the modern ecosystem architecture in East Africa is linked to early human activities.


英文关键词Africa Paleoecology Paleoclimate Tropical forests Holocene Iron Age African Humid Period
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000425965700002
WOS关键词LAST GLACIAL MAXIMUM ; UGANDA-CONGO ; LATE PLEISTOCENE ; WESTERN UGANDA ; LATE HOLOCENE ; RAINFALL SEASONALITY ; VEGETATION RESPONSE ; TROPICAL AFRICA ; POLLEN EVIDENCE ; LATE QUATERNARY
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/2XILL650/212489
作者单位1.Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA;
2.Univ Kentucky, Dept Earth & Environm Sci, Lexington, KY 40506 USA
推荐引用方式
GB/T 7714
Ivory, Sarah J.,Russell, James. Lowland forest collapse and early human impacts at the end of the African Humid Period at Lake Edward, equatorial East Africa[J],2018,89(1):7-20.
APA Ivory, Sarah J.,&Russell, James.(2018).Lowland forest collapse and early human impacts at the end of the African Humid Period at Lake Edward, equatorial East Africa.QUATERNARY RESEARCH,89(1),7-20.
MLA Ivory, Sarah J.,et al."Lowland forest collapse and early human impacts at the end of the African Humid Period at Lake Edward, equatorial East Africa".QUATERNARY RESEARCH 89.1(2018):7-20.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Ivory, Sarah J.]的文章
[Russell, James]的文章
百度学术
百度学术中相似的文章
[Ivory, Sarah J.]的文章
[Russell, James]的文章
必应学术
必应学术中相似的文章
[Ivory, Sarah J.]的文章
[Russell, James]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。