globalchange  > 过去全球变化的重建
DOI: 10.1002/ecs2.2747
WOS记录号: WOS:000474063600033
论文题名:
Understory plant composition and nitrogen transformations resistant to changes in seasonal precipitation
作者: Ploughe, Laura W.1; Dukes, Jeffrey S.1,2
通讯作者: Ploughe, Laura W.
刊名: ECOSPHERE
ISSN: 2150-8925
出版年: 2019
卷: 10, 期:5
语种: 英语
英文关键词: drought ; freeze-thaw ; inorganic nitrogen ; microbes ; mineralization ; nitrification ; plant available nutrients ; plant community ; soil moisture ; soil nutrients ; soil temperature
WOS关键词: CLIMATE-CHANGE ; N MINERALIZATION ; SOIL-NITROGEN ; EXTREME PRECIPITATION ; RAINFALL VARIABILITY ; SPECIES DIVERSITY ; NET NITROGEN ; DROUGHT ; GRASSLAND ; TEMPERATURE
WOS学科分类: Ecology
WOS研究方向: Environmental Sciences & Ecology
英文摘要:

Climate change has increased global mean surface temperatures and altered hydrological processes, and projections suggest that these changes will accelerate. As seasonal precipitation patterns change, so will the soil resources available for plants. In the midwestern United States, winter temperatures and precipitation are expected to increase, while snowfall is expected to be reduced. Reduced snowpack could lead to greater frost damage and alter the timing and amount of plant available resources at the start of the growing season. In the summer, precipitation is expected to decrease, and variability is expected to increase, creating longer and more frequent dry periods. In temperate forests, herbaceous understory plants and woody plants in early developmental stages are expected to be highly sensitive to changes in abiotic conditions. Here, we study how seasonal changes in precipitation affect the timing and availability of resources in a temperate deciduous forest. Further, we examine how changes in abiotic conditions influence understory composition and woody plant recruitment. We established a fully factorial experiment that manipulated winter snowfall and summer precipitation to create wet, dry, and control (ambient) conditions in a temperate deciduous forest near West Lafayette, Indiana, USA. We found that large changes in winter and summer precipitation appeared to affect forest processes independently of one another, and changes in seasonal precipitation altered understory composition minimally and had little to no effect on mineralization rates. The recruitment of woody plant species may be more sensitive to altered precipitation, as snow removal lowered germination rates and wet summer conditions lowered relative growth of a woody plant species, Lindera benzoin. In general, though, ecological processes in this forest understory were relatively resistant to change, at least in the short timeframe of this experiment.


Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/137014
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: 1.Purdue Univ, Dept Biol Sci, 915 West State St, W Lafayette, IN 47907 USA
2.Purdue Univ, Dept Forestry & Nat Resources, 715 West State St, W Lafayette, IN 47907 USA

Recommended Citation:
Ploughe, Laura W.,Dukes, Jeffrey S.. Understory plant composition and nitrogen transformations resistant to changes in seasonal precipitation[J]. ECOSPHERE,2019-01-01,10(5)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Ploughe, Laura W.]'s Articles
[Dukes, Jeffrey S.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Ploughe, Laura W.]'s Articles
[Dukes, Jeffrey S.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Ploughe, Laura W.]‘s Articles
[Dukes, Jeffrey S.]‘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.