干旱区生态环境知识资源中心(Arid): Factors influencing chronic semi-arid headwater stream impairments: a southern California case study

Arid

DOI	10.3934/geosci.2022007
	Factors influencing chronic semi-arid headwater stream impairments: a southern California case study
	Alford, Jennifer B.; Mora, Jose A.
通讯作者	Alford, JB (corresponding author)，Calif State Univ San Bernardino, Dept Geog & Environm Studies, 5500 Univ Pkwy, San Bernardino, CA 92407 USA.
来源期刊	AIMS GEOSCIENCES
ISSN	2471-2132
出版年	2022
卷号	8 期号:1 页码:98-126
英文摘要	Sources of stream impairments are well known; however, less attention has centered on characterizing the extent to which human-environmental factors influence headwater stream quality within semi-arid watersheds. This study quantified the extent to which seasonal weather patterns and landscape attributes contribute to the physicochemical characteristics of two perennial headwater tributaries and their confluence within the semi-arid mountainous region of the Santa Ana River Basin, California. In situ sampling of stream temperature (celcius), stream flow rate (m/s), nitrate (NO3-), ammonium (NH4+), turbidity (NTU), dissolved oxygen (DO), conductivity, pH and lab assessments for. E. coli, total coliform (TC) and total dissolved solids (TDS) occurred during dry and wet season conditions. Across sampling locations, multiple parameters (i.e. NO3-, NH4+, TDS, TC) consistently exceeded regulatory standards simultaneously during both the dry and wet seasons, however, the level of concentrations varied between a tributary catchment landscape with high percentage of impervious surfaces (i.e. roads, buildings) and wastewater infrastructure (i.e septic, sewer) versus one characterized by agricultural activities (i.e. crop, livestock) and barren land. Findings illustrate the need for hydrologically comprehensive strategies (i.e. stream headwaters to river mouth) that are community to agency-driven and that support the expansion of monitoring and shared knowledge to mitigate impairments within headwater streams and downstream. Potential avenues for community collaborations that support sustainable water management strategies are highlighted.
英文关键词	headwater streams resource management seasonal physicochemical trends semi-arid regions surface water quality
类型	Article
语种	英语
开放获取类型	gold
收录类别	ESCI
WOS记录号	WOS:000754866200001
WOS关键词	SEASONAL WATER-QUALITY ; LAND-COVER ; ATMOSPHERIC RIVERS ; FRESH-WATER ; DROUGHT ; IMPACTS ; CLIMATE ; STORMWATER ; NUTRIENT ; COASTAL
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376995
作者单位	[Alford, Jennifer B.] Calif State Univ San Bernardino, Dept Geog & Environm Studies, 5500 Univ Pkwy, San Bernardino, CA 92407 USA; [Mora, Jose A.] Twenty Nine Palms Band Mission Indians Environm P, Water Qual Management Program, Twenty Nine Palms, CA USA
推荐引用方式 GB/T 7714	Alford, Jennifer B.,Mora, Jose A.. Factors influencing chronic semi-arid headwater stream impairments: a southern California case study[J],2022,8(1):98-126.
APA	Alford, Jennifer B.,&Mora, Jose A..(2022).Factors influencing chronic semi-arid headwater stream impairments: a southern California case study.AIMS GEOSCIENCES,8(1),98-126.
MLA	Alford, Jennifer B.,et al."Factors influencing chronic semi-arid headwater stream impairments: a southern California case study".AIMS GEOSCIENCES 8.1(2022):98-126.