Nutrient mitigation capacity in Mississippi Delta, USA drainage ditches

Moore, Matthew T.; Kröger, R.; Locke, Martin A.; Cullum, R. F.; Steinriede, R.W.; Testa, Sam; Lizotte, Richard E.; Bryant, Charles T.; Cooper, Charles M.

doi:10.1016/j.envpol.2009.07.024

Cited by 103 publications

(48 citation statements)

References 56 publications

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“…Lalonde et al (1996) reported ditch drain flow was reduced by 58-95% with controlled drainage which resulted in a 62-95% reduction in NO 3 − . Interestingly, a second nutrient runoff event at a lower NO 3 − concentration flipped both weired and riser ditches from being NO 3 − sinks to NO 3 − sources, contrary to previous published studies on drainage ditch nutrient reduction capacity (Kröger et al 2007;Moore et al 2010). Outflow concentrations were higher than the dosed concentrations in both weired and riser ditches (Fig.…”

Section: Physicochemical Conditionscontrasting

confidence: 81%

“…Similarly, the decreased flow velocities and similar sediment substrates between the controlled drainage systems resulted in equal TIP and DIP load reductions. This data highlights that drainage ditches are useful in nutrient reductions confirming past work (Kröger et al 2007(Kröger et al , 2008b; Moore et al 2010;Needelman et al 2007), but also substantiates controlled drainage literature on the effectiveness of controlled drainage strategies in nutrient reductions (Shirmohammadi et al 1995;Thomas et al 1991;Borin et al 2001;Thomas et al 1995).…”

Section: Phosphorus Concentrationssupporting

confidence: 76%

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Evidence for the Use of Low-Grade Weirs in Drainage Ditches to Improve Nutrient Reductions from Agriculture

Kröger

Moore

Farris

et al. 2011

Water Air Soil Pollut

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Typical controlled drainage structures in drainage ditches provide drainage management strategies for isolated temporal periods. Innovative, lowgrade weirs are anticipated to provide hydraulic control on an annual basis, as well as be installed at multiple sites within the drainage ditch for improved spatial biogeochemical transformations. This study provides evidence toward the capacity of low-grade weirs for nutrient reductions, when compared to the typical controlled drainage structure of a slotted riser treatment. Three ditches with weirs were compared against three ditches with slotted risers, and two control ditches for hydraulic residence time (HRT) and nutrient reductions. There were no differences in water volume or HRT between weired and riser systems. Nutrient concentrations significantly decreased from inflow to outflow in both controlled drainage strategies, but there were few statistical differences in N and P concentration reductions between controlled drainage treatments. Similarly, there were significant declines in N and P loads, but no statistical differences in median N and P outflow loads between weir (W) and riser (R) ditches for dissolved inorganic phosphate (W, 92%; R, 94%), total inorganic phosphate (W, 86%; R, 88%), nitrate-N (W, 98%; R, 96%), and ammonium (W, 67%; R, 85%) when nutrients were introduced as runoff events. These results indicate the importance of HRT in improving nutrient reductions. Low-grade weirs should operate as important drainage control structures in reducing nutrient loads to downstream receiving systems if the hydraulic residence time of the system is significantly increased with multiple weirs, as a result of ditch length and slope.

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Section: Physicochemical Conditionscontrasting

confidence: 81%

Section: Phosphorus Concentrationssupporting

confidence: 76%

Evidence for the Use of Low-Grade Weirs in Drainage Ditches to Improve Nutrient Reductions from Agriculture

Kröger

Moore

Farris

et al. 2011

Water Air Soil Pollut

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“…We assumed that similar characteristics influence sedimentation within ditches. As mentioned above, vegetation generates friction and roughness, which decrease the flow velocity and enhance the sedimentation potential (Fiener and Auerswald 2003;Gumiere et al 2011;Hösl et al 2012;Needelman et al 2007), which has been evidenced by Moore et al (2010), who detected a lower proportion of suspended solids in the water column of a vegetated ditch than those in the water column of a non-vegetated ditch. The ditch morphology and the water level fluctuations also influence the flow velocity .…”

Section: Sediment Retention In Ditchesmentioning

confidence: 97%

“…Note that the maintenance operations by modifying ditch characteristics influence either in a positive or negative way the geochemical, geophysical, and biological processes involved in the ecosystem services. There is no obvious optimal maintenance operation + positive effect of the maintenance operation on the given processes, − negative effect of the maintenance operation on the given processes, 0 no effect of the maintenance operation on the given processes vegetated ditches has been demonstrated by specific case studies (Budd et al 2009;Elsaesser et al 2013Elsaesser et al , 2011Moore et al 2010). The involved mechanisms are not always completely clarified, and the hierarchy of processes leading to retention is generally not specified.…”

Section: Connecting Populationsmentioning

confidence: 99%

Managing ditches for agroecological engineering of landscape. A review

Dollinger¹,

Dagès²,

Bailly

et al. 2015

Agron. Sustain. Dev.

114

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Agriculture must now feed the planet with the lowest environmental impact. Landscape management is a means to protect natural resources from the adverse impacts. In particular, the adequate management of ditches could improve crop quality. Here, we review ditch design and maintenance. We found the following major points: (1) ditch networks have been primarily designed for waterlogging control and erosion prevention. Nonetheless, when properly managed, farm ditches provide other important ecosystem services, namely groundwater recharge, flood attenuation, water purification, or biodiversity conservation. (2) All ditch ecosystem services depend on many geochemical, geophysical, and biological processes, whose occurrence and intensity vary largely with ditch characteristics. (3) The major ruling characteristics are vegetative cover; ditch morphology; slope orientation; reach connections such as piped sections and weirs, soil, sediment and litter properties, biota, and biofilms; and network topology. (4) Ditch maintenance is an efficient engineering tool to optimize ecosystem services because several ditch characteristics change widely with ditch maintenance. For instance, maintenance operations, dredging, chemical weeding, and burning improve waterlogging and soil erosion control, but they are negative for biodiversity conservation. Mowing has low adverse effects on biodiversity conservation and water purification when mowing is performed at an adequate season. The effects of burning have been poorly investigated.

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“…The geometry, or channel characteristics, of a ditch is key to its function in conveying water, sediment, and P. Twostage ditches, which use a trapezoidal geometry to support a stable bench within the ditch, help to reduce the velocity of drainage flows by widening the ditch and promoting sedimentation on the bench (Powell et al, 2007;Strock et al, 2010). Vegetation also plays an important role through bank stabilization and physical trapping of sediment (Moore et al, 2010;Liu et al, 2013), although vegetation can adversely affect the hydraulic function of a ditch by creating impoundments during peak flows thereby reducing drainage flows.…”

Section: Drainage Ditchesmentioning

confidence: 99%

Phosphorus Fate, Management, and Modeling in Artificially Drained Systems

et al. 2015

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Phosphorus (P) losses in agricultural drainage waters, both surface and subsurface, are among the most difficult form of nonpoint source pollution to mitigate. This special collection of papers on P in drainage waters documents the range of field conditions leading to P loss in drainage water, the potential for drainage and nutrient management practices to control drainage losses of P, and the ability of models to represent P loss to drainage systems. A review of P in tile drainage and case studies from North America, Europe, and New Zealand highlight the potential for artificial drainage to exacerbate watershed loads of dissolved and particulate P via rapid, bypass flow and shorter flow path distances. Trade-offs are identified in association with drainage intensification, tillage, cover crops, and manure management. While P in drainage waters tends to be tied to surface sources of P (soil, amendments or vegetation) that are in highest concentration, legacy sources of P may occur at deeper depths or other points along drainage flow paths. Most startling, none of the major fate-and-transport models used to predict management impacts on watershed P losses simulate the dominant processes of P loss to drainage waters. Because P losses to drainage waters can be so difficult to manage and to model, major investment are needed (i) in systems that can provide necessary drainage for agronomic production while detaining peak flows and promoting P retention and (ii) in models that can adequately describe P loss to drainage waters.

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Nutrient mitigation capacity in Mississippi Delta, USA drainage ditches

Cited by 103 publications

References 56 publications

Evidence for the Use of Low-Grade Weirs in Drainage Ditches to Improve Nutrient Reductions from Agriculture

Evidence for the Use of Low-Grade Weirs in Drainage Ditches to Improve Nutrient Reductions from Agriculture

Managing ditches for agroecological engineering of landscape. A review

Phosphorus Fate, Management, and Modeling in Artificially Drained Systems

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