干旱区生态环境知识资源中心(Arid): Convergent vegetation fog and dew water use in the Namib Desert

Arid

DOI	10.1002/eco.2130
	Convergent vegetation fog and dew water use in the Namib Desert
	Wang, Lixin 1; Kaseke, Kudzai Farai 1,2; Ravi, Sujith 3; Jiao, Wenzhe 1; Mushi, Roland 4; Shuuya, Titus 4; Maggs-Kolling, Gillian 4
通讯作者	Wang, Lixin
来源期刊	ECOHYDROLOGY
ISSN	1936-0584
EISSN	1936-0592
出版年	2019
卷号	12 期号:7
英文摘要	Nonrainfall water inputs (e.g., fog and dew) are the least studied hydrological components in ecohydrology. The importance of nonrainfall waters on vegetation water status in arid ecosystems is receiving increasing attention. However, a clear understanding on how common plant water status benefits from nonrainfall waters, the impacts of different types of fog and dew events on vegetation water status, and the vegetation uptake mechanisms of nonrainfall waters is still lacking. In this study, we used concurrent leaf and soil water potential measurements from 3 years to investigate the species-specific capacity to utilize moisture from fog and dew within the Namib Desert. Eight common plant species in the Namib Desert were selected. Our results showed that both fog and dew significantly increased soil water potential. Seven of the eight plant species studied responded to fog and dew events, although the magnitude of the response differed. Plants generally showed stronger responses to fog than to dew. Fog timing seemed to be an important factor determining vegetation response; for example, night fog did not affect plant water potential. We also found that Euclea pseudebenus and Faidherbia albida likely exploit fog moisture through foliar uptake. This study provides a first comprehensive assessment of the effects of nonrainfall waters on plant water status within the Namib Desert. Furthermore, this study highlights the importance of concurrent leaf and soil water potential measurements to identify the pathways of nonrainfall water use by desert vegetation. Our results fill a knowledge gap in dryland ecohydrology and have important implications for other drylands.
英文关键词	dew drylands fog Namib Desert plant water potential soil water potential
类型	Article
语种	英语
国家	USA ; Namibia
开放获取类型	Green Published, Bronze
收录类别	SCI-E
WOS记录号	WOS:000476250800001
WOS关键词	FOLIAR UPTAKE ; MOISTURE ; GRASSES ; DROUGHT ; PLANTS
WOS类目	Ecology ; Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215144
作者单位	1.Indiana Univ Purdue Univ, Dept Earth Sci, Indianapolis, IN 46202 USA; 2.Univ Calif Santa Barbara, Earth Res Inst, Santa Barbara, CA 93001 USA; 3.Temple Univ, Dept Earth & Environm Sci, 1901 N 13th St, Philadelphia, PA 19122 USA; 4.Gobabeb Res & Training Ctr, Walvis Bay, Namibia
推荐引用方式 GB/T 7714	Wang, Lixin,Kaseke, Kudzai Farai,Ravi, Sujith,et al. Convergent vegetation fog and dew water use in the Namib Desert[J],2019,12(7).
APA	Wang, Lixin.,Kaseke, Kudzai Farai.,Ravi, Sujith.,Jiao, Wenzhe.,Mushi, Roland.,...&Maggs-Kolling, Gillian.(2019).Convergent vegetation fog and dew water use in the Namib Desert.ECOHYDROLOGY,12(7).
MLA	Wang, Lixin,et al."Convergent vegetation fog and dew water use in the Namib Desert".ECOHYDROLOGY 12.7(2019).