DOI: 10.1016/j.watres.2018.10.065
Scopus记录号: 2-s2.0-85055915045
论文题名: Overlapping anthropogenic effects on hydrologic and seasonal trends in DOC in a surface water dependent water utility
作者: Parr T.B. ; Inamdar S.P. ; Miller M.J.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 407
结束页码: 415
语种: 英语
英文关键词: Biogeochemistry
; Dissolved organic carbon
; Long term trends
; Water quality
; Water resource management
Scopus关键词: Aquatic ecosystems
; Biogeochemistry
; Byproducts
; Meteorological problems
; Organic carbon
; Stream flow
; Surface waters
; Water management
; Water quality
; Water supply
; Anthropogenic effects
; Atmospheric depositions
; Disinfection by-product
; Dissolved organic carbon
; Ecosystem functions
; Long-term trend
; Waterresource management
; Weighted regression
; Potable water
; deoxycorticosterone
; dissolved organic matter
; drinking water
; organic carbon
; surface water
; anthropogenic effect
; biogeochemistry
; concentration (composition)
; dissolved organic carbon
; ecosystem function
; hydrology
; long-term change
; seasonal variation
; streamwater
; surface water
; trend analysis
; water management
; water quality
; water resource
; water supply
; aquatic environment
; Article
; atmospheric deposition
; autumn
; climate
; global change
; hydrology
; priority journal
; seasonal variation
; spring
; summer
; water management
; water supply
; watershed
; winter
英文摘要: Drinking water supplies are increasingly affected by overlapping anthropogenic global change processes. As a key currency of ecosystem function in aquatic ecosystems, dissolved organic carbon (DOC) concentration and composition is sensitive to many global change processes. However, DOC must also be removed to avoid the production of harmful disinfection byproducts as water is processed. Thus, understanding the effects of global change processes on the seasonal and long-term dynamics of DOC composition and concentration is critical for ensuring the sustainability of drinking water supplies. To understand these dynamics, we analyzed a novel 11-year time series of stream water DOC concentration and composition using Weighted Regressions on Time Discharge and Season (WRTDS) to understand the influences of co-occurring changes in climate and atmospheric deposition. We also discuss the implications for water supply provision and management. We found that, during our study period, overlapping global change processes in the watershed had the net effect of increasing the DOC aromaticity, as measured by SUVA254, at moderate to high discharge levels during the late spring and early summer and the autumn and early winter. However, changes in DOC concentration were more dynamic and we observed both increasing and decreasing trends depending on season and hydrologic state. During summer, at low to moderate flow levels we observed a significant (p < 0.05) increase in DOC concentration. During autumn, at moderate to high flow levels we observed a significant (p < 0.05) decrease in DOC concentration and an increase in SUVA254. For drinking water providers, our results suggest that close monitoring of source waters must be coupled with the development of plans accounting for season- and hydrology-specific long-term changes. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122193
Appears in Collections: 气候变化事实与影响
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作者单位: University of Delaware, Department of Plant and Soil Science, Newark, DE 19716, United States; City of Wilmington, Department of Public Works, Wilmington, DE 19801, United States; University of Oklahoma, Oklahoma Biological Survey, Norman, OK 73072, United States; Aqua Pennsylvania, Inc. Bryn MawrPA 19010, United States
Recommended Citation:
Parr T.B.,Inamdar S.P.,Miller M.J.. Overlapping anthropogenic effects on hydrologic and seasonal trends in DOC in a surface water dependent water utility[J]. Water Research,2019-01-01