干旱区生态环境知识资源中心(Arid): High Potential Nitrate Removal by Urban Accidental Wetlands in a Desert City: Limitations and Spatiotemporal Patterns

Arid

DOI	10.1007/s10021-019-00465-8
	High Potential Nitrate Removal by Urban Accidental Wetlands in a Desert City: Limitations and Spatiotemporal Patterns
	Suchy, Amanda K.; Palta, Monica M.; Stromberg, Juliet C.; Childers, Daniel L.
通讯作者	Suchy, AK
来源期刊	ECOSYSTEMS
ISSN	1432-9840
EISSN	1435-0629
出版年	2020
卷号	23 期号:6 页码:1227-1242
英文摘要	Urban areas are typically considered to be net exporters of reactive nitrogen. As a result, much effort has gone into creating or restoring areas supporting microbial denitrification, which permanently removes nitrate from urban ecosystems. However, denitrification is a facultative process, with complex spatiotemporal drivers and limitations, making it difficult to predict where or when denitrification will occur. This is particularly true in urban systems, where drivers and limitations can differ greatly from those of native systems. In this study, we examine novel urban ecosystems in a unique geographic setting, investigating limitations and spatiotemporal drivers of denitrification in accidental wetlands (AW) located in a desert city (Phoenix, AZ). These wetlands were unintentionally created by runoff generated in Phoenix and exiting storm pipes into a dry riverbed. Previous work in native, nonurban Arizona wetlands (NW) found that monsoon floods and plant patches are important spatiotemporal drivers of denitrification. While we found that AW had high potential to process nitrate, denitrification patterns in AW exhibit different drivers from NW. As predicted, denitrification potential in AW was greater under plant patches, but surprisingly, this was not only due to the plants alleviating carbon limitation as both vegetated and unvegetated patches were not carbon limited. Contrary to predictions, monsoon floods did not increase denitrification potential, and perennially inundated AW had the highest denitrification potential, suggesting less temporal variation in denitrification in AW than in NW. Together, these findings offer novel insights into the complex interactions shaping spatiotemporal patterns of nitrate processing in arid urban regions.
英文关键词	Denitrification Urban Accidental wetlands Desert Baseflow Nitrate Monsoon
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000569248700007
WOS关键词	ORGANIC-MATTER ; HOT MOMENTS ; DENITRIFICATION ; NITROGEN ; NITRIFICATION ; URBANIZATION ; RESTORATION ; TERRESTRIAL ; VEGETATION ; REDUCTION
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	Arizona State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326287
作者单位	[Suchy, Amanda K.] CUNY, Environm Sci Initiat, Adv Sci Res Ctr, Grad Ctr, 85 St Nicholas Terrace, New York, NY 10031 USA; [Palta, Monica M.] Pace Univ, Dept Environm Studies & Sci, 1 Pace Plaza, New York, NY 10038 USA; [Stromberg, Juliet C.] Arizona State Univ, Sch Life Sci, POB 874501, Tempe, AZ 85287 USA; [Childers, Daniel L.] Arizona State Univ, Sch Sustainabil, POB 875502, Tempe, AZ 85287 USA
推荐引用方式 GB/T 7714	Suchy, Amanda K.,Palta, Monica M.,Stromberg, Juliet C.,et al. High Potential Nitrate Removal by Urban Accidental Wetlands in a Desert City: Limitations and Spatiotemporal Patterns[J]. Arizona State University,2020,23(6):1227-1242.
APA	Suchy, Amanda K.,Palta, Monica M.,Stromberg, Juliet C.,&Childers, Daniel L..(2020).High Potential Nitrate Removal by Urban Accidental Wetlands in a Desert City: Limitations and Spatiotemporal Patterns.ECOSYSTEMS,23(6),1227-1242.
MLA	Suchy, Amanda K.,et al."High Potential Nitrate Removal by Urban Accidental Wetlands in a Desert City: Limitations and Spatiotemporal Patterns".ECOSYSTEMS 23.6(2020):1227-1242.