The hydrology of four experimental constructed marshes

Hey, Donald L.; Barrett, Kirk R.; Biegen, Carolann

doi:10.1016/0925-8574(94)00006-9

Cited by 31 publications

(17 citation statements)

References 7 publications

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“…Furthermore, evidence suggests that the retention rate is positively related to hydraulic retention time and thus to the ratio of VTS volume and water inflow (Matamoros et al, 2008) and is inversely related to the hydraulic loading rate (defined as water inflow divided by system surface area [Blankenberg et al, 2006; Blankenberg et al, 2007]). A high compactness index (i.e., the distance from inlet to outlet divided by the area) may promote a high retention performance (Hey et al, 1994). Additionally, some studies indicate that the longer the flow length through the system and the larger the system surface area, the higher is the retention for a given pesticide (Bennett et al, 2005; Cooper et al, 2004; Haarstad and Braskerud, 2005) and that mitigation system efficiency is presumably inversely linked to flow velocity (Dabrowski et al, 2006; Gregoire et al, 2009).…”

Section: Factors Controlling Pesticide Retention In Vegetated Treatmementioning

confidence: 99%

Pesticide Risk Mitigation by Vegetated Treatment Systems: A Meta-Analysis

et al. 2011

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Pesticides entering agricultural surface waters threaten water quality and aquatic communities. Recently, vegetated treatment systems (VTSs) (e.g., constructed wetlands and vegetated ditches) have been proposed as pesticide risk mitigation measures. However, little is known about the effectiveness of VTSs in controlling nonpoint source pesticide pollution and factors relevant for pesticide retention within these systems. Here, we conducted a meta-analysis on pesticide mitigation by VTSs using data from the scientific literature and the European LIFE ArtWET project. Overall, VTSs effectively reduced pesticide exposure levels (i.e., the majority of pesticide retention performances was >70%). A multiple linear regression analysis of 188 retention performance cases identified the two pesticide properties, organic carbon sorption coefficient value and water-phase 50% dissipation time, as well as the VTS characteristics overall plant coverage and hydraulic retention time for targeting high efficacy of pesticide retention. The application of a Tier I risk assessment (EU Uniform Principle) revealed a higher toxicity reduction for hydrophobic and nonpersistent insecticides compared with less sorptive and not readily degradable herbicides and fungicides. Overall, nearly half (48.5%) of all pesticide field concentrations ( = 130) failed Tier I standard risk assessment at the inlet of VTSs, and 29.2% of all outlet concentrations exceeded conservative acute threshold levels. We conclude that VTSs are a suitable and effective risk mitigation strategy for agricultural nonpoint source pesticide pollution of surface waters. Further research is needed to improve their overall efficacy in retaining pesticides.

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Section: Factors Controlling Pesticide Retention In Vegetated Treatmementioning

confidence: 99%

Pesticide Risk Mitigation by Vegetated Treatment Systems: A Meta-Analysis

et al. 2011

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“…Low sediment removal efficiencies could also result from the shorter hydrologic retention times that occurred for the two wetlands during 1997 . The detention time for the system studied by Hey et al (1994a) averaged 11 days, while hydrologic retention in the wetlands at the ORWRP averaged only 2.1 days for the study period. The low hydrologic retention of the wetlands most likely accounted for the low sediment retention observed during this study.…”

Section: Comparison With Model Outcome and Sediment Budgetmentioning

confidence: 99%

Patterns of Short-Term Sedimentation in a Freshwater Created Marsh

Harter¹,

Mitsch²

2003

Journal of Environment Quality

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“…Results from two modelling efforts were used to estimate modelled water budgets in natural wetlands ( n = 5 model estimates) and constructed wetlands ( n = 2 model estimates). Data compiled from Crisp (1966); Hemond (); Hey, Barrett, and Biegen (); Lent et al (); Daniels et al (); Choi and Harvey (); Nungesser and Chimney (); Strosnider, Hitchcock, Burke, and Lewitus (); Caldwell, Vepraskas, Skaggs, and Gregory (); Ayub, Zakaria, Abdullah, and Ramli (); Mitsch, Zhang, Waletzko, and Bernal ()…”

Section: Resultsmentioning

confidence: 99%

Hydrologic processes that govern stormwater infrastructure behaviour

Eger

Chandler

Driscoll

2017

Hydrological Processes

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Using water budget data from published literature, we demonstrate how hydrologic processes govern the function of various stormwater infrastructure technologies. Hydrologic observations are displayed on a Water Budget Triangle, a ternary plot tool developed to visualize simplified water budgets, enabling side‐by‐side comparison of green and grey approaches to stormwater management. The tool indicates ranges of hydrologic function for green roofs, constructed wetlands, cisterns, bioretention, and other stormwater control management structures. Water budgets are plotted for several example systems to provide insight on structural and environmental design factors, and seasonal variation in hydrologic processes of stormwater management systems. Previously published water budgets and models are used to suggest appropriate operational standards for several green and grey stormwater control structures and compare between conventional and low‐impact development approaches. We compare models, characterize and quantify water budgets and expected ranges for green and grey infrastructure systems, and demonstrate how the Water Budget Triangle tool may help users to develop a data‐driven approach for understanding design and retrofit of green stormwater infrastructure.

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The hydrology of four experimental constructed marshes

Cited by 31 publications

References 7 publications

Pesticide Risk Mitigation by Vegetated Treatment Systems: A Meta-Analysis

Pesticide Risk Mitigation by Vegetated Treatment Systems: A Meta-Analysis

Patterns of Short-Term Sedimentation in a Freshwater Created Marsh

Hydrologic processes that govern stormwater infrastructure behaviour

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