Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1814307116 |
Predictable hydrological and ecological responses to Holocene North Atlantic variability | |
Shuman, Bryan N.1; Marsicek, Jeremiah2; Oswald, W. Wyatt3; Foster, David R.4 | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2019 |
卷号 | 116期号:13页码:5985-5990 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Climate variations in the North Atlantic region can substantially impact surrounding continents. Notably, the Younger Dryas chronozone was named for the ecosystem effects of abrupt changes in the region at circa (ca.) 12.9-11.7 ka (millennia before 1950 AD). Holocene variations since then, however, have been hard to diagnose, and the responsiveness of terrestrial ecosystems continues to be debated. Here, we show that Holocene climate variations had spatial patterns consistent with changes in Atlantic overturning and repeatedly steepened the temperature gradient between Nova Scotia and Greenland since >8 ka. The multicentury changes correlated with hydrologic and vegetation changes in the northeast United States, including when an enhanced temperature gradient coincided with subregional droughts indicated by waterlevel changes at multiple coastal lakes at 4.9-4.6, 4.2-3.9, 2.8-2.1, and 1.3-1.2 ka. We assessed the variability and its effects by replicating signals across sites, using converging evidence from multiple methods, and applying forward models of the systems involved. We evaluated forest responses in the northeast United States and found that they tracked the regional climate shifts including the smallest magnitude (similar to 5% or 50 mm) changes in effective precipitation. Although a long-term increase in effective precipitation of >45% (>400 mm) could have prevented ecological communities from equilibrating to the continuously changing conditions, our comparisons confirm stable vegetation-climate relationships and support the use of fossil pollen records for quantitative paleoclimate reconstruction. Overall, the network of records indicates that centennial climate variability has repeatedly affected the North Atlantic region with predictable consequences. |
英文关键词 | drought vegetation North Atlantic Holocene climate |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000462382800030 |
WOS关键词 | VEGETATION DYNAMICS ; CLIMATE-CHANGE ; POLLEN ; OSCILLATION ; DRIVER ; TRENDS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/205076 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Wyoming, Dept Geol & Geophys, Laramie, WY 82072 USA; 2.Univ Wisconsin, Dept Geosci, Madison, WI 53706 USA; 3.Emerson Coll, Inst Liberal Arts & Interdisciplinary Studies, Boston, MA 02116 USA; 4.Harvard Univ, Harvard Forest, Petersham, MA 01366 USA |
推荐引用方式 GB/T 7714 | Shuman, Bryan N.,Marsicek, Jeremiah,Oswald, W. Wyatt,et al. Predictable hydrological and ecological responses to Holocene North Atlantic variability[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(13):5985-5990. |
APA | Shuman, Bryan N.,Marsicek, Jeremiah,Oswald, W. Wyatt,&Foster, David R..(2019).Predictable hydrological and ecological responses to Holocene North Atlantic variability.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(13),5985-5990. |
MLA | Shuman, Bryan N.,et al."Predictable hydrological and ecological responses to Holocene North Atlantic variability".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.13(2019):5985-5990. |
条目包含的文件 | 条目无相关文件。 |
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。
修改评论