DOI: 10.5194/hess-18-4721-2014
Scopus记录号: 2-s2.0-84919360636
论文题名: Comparison of sampling methodologies for nutrient monitoring in streams: Uncertainties, costs and implications for mitigation
作者: Audet J ; , Martinsen L ; , Hasler B ; , De Jonge H ; , Karydi E ; , Ovesen N ; B ; , Kronvang B
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2014
卷: 18, 期: 11 起始页码: 4721
结束页码: 4731
语种: 英语
Scopus关键词: Aquatic ecosystems
; Biodiversity
; Cost benefit analysis
; Costs
; Eutrophication
; Health risks
; Nitrogen
; Phosphorus
; Risk perception
; River pollution
; Water supply
; Best estimates
; Mitigation strategy
; Monitoring methods
; Nitrogen and phosphorus
; Nitrogen and phosphorus loss
; Nutrient monitoring
; Passive samplers
; Passive sampling
; Nutrients
; cost analysis
; health risk
; mitigation
; monitoring system
; nitrogen
; nutrient dynamics
; phosphorus
; policy implementation
; streamwater
; water planning
; water quality
英文摘要: Eutrophication of aquatic ecosystems caused by excess concentrations of nitrogen and phosphorus may have harmful consequences for biodiversity and poses a health risk to humans via water supplies. Reduction of nitrogen and phosphorus losses to aquatic ecosystems involves implementation of costly measures, and reliable monitoring methods are therefore essential to select appropriate mitigation strategies and to evaluate their effects. Here, we compare the performances and costs of three methodologies for the monitoring of nutrients in rivers: grab sampling; time-proportional sampling; and passive sampling using flow-proportional samplers. Assuming hourly time-proportional sampling to be the best estimate of the "true" nutrient load, our results showed that the risk of obtaining wrong total nutrient load estimates by passive samplers is high despite similar costs as the time-proportional sampling. Our conclusion is that for passive samplers to provide a reliable monitoring alternative, further development is needed. Grab sampling was the cheapest of the three methods and was more precise and accurate than passive sampling. We conclude that although monitoring employing time-proportional sampling is costly, its reliability precludes unnecessarily high implementation expenses. © Author(s) 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78067
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Bioscience, Aarhus University, Vejlsøvej 25, Silkeborg, Denmark; Department of Environmental Science, Aarhus University, Frederiksborgvej 399, Roskilde, Denmark; Sorbisense A/S, P.O. Box 10, Tjele, Denmark; Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, P.O. Box 7050, Uppsala, Sweden
Recommended Citation:
Audet J,, Martinsen L,, Hasler B,et al. Comparison of sampling methodologies for nutrient monitoring in streams: Uncertainties, costs and implications for mitigation[J]. Hydrology and Earth System Sciences,2014-01-01,18(11)