Comparative use of field and laboratory mesocosms for in-stream nitrate uptake measurement

Turlan, Tristan; Bírgand, François; Marmonier, Pierre

doi:10.1051/limn/2007026

Cited by 13 publications

(5 citation statements)

References 24 publications

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“…The zero order, first order, and Monod models were chosen because they have been used to model NO 3 -N removal in wetlands in past experiments [25,36]. The efficiency loss model was chosen because to our knowledge it had not been explored prior to this study in wetlands, but has been observed to model NO 3 -N removal well in streams [37][38][39].…”

Section: No 3 -N Removal Kinetic Modelsmentioning

confidence: 99%

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Comparison of Four Nitrate Removal Kinetic Models in Two Distinct Wetland Restoration Mesocosm Systems

Messer

Burchell

Bírgand

2017

Water

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Abstract:The objective of the study was to determine the kinetic model that best fit observed nitrate removal rates at the mesocosm scale in order to determine ideal loading rates for two future wetland restorations slated to receive pulse flow agricultural drainage water. Four nitrate removal models were investigated: zero order, first order decay, efficiency loss, and Monod. Wetland mesocosms were constructed using the primary soil type (in triplicate) at each of the future wetland restoration sites. Eighteen mesocosm experiments were conducted over two years across seasons. Simulated drainage water was loaded into wetlands as batches, with target nitrate-N levels typically observed in agricultural drainage water (between 2.5 and 10 mg L −1 ). Nitrate-N removal observed during the experiments provided the basis for calibration and validation of the models. When the predictive strength of each of the four models was assessed, results indicated that the efficiency loss and first order decay models provided the strongest agreement between predicted and measured NO 3 -N removal rates, and the fit between the two models were comparable. Since the predictive power of these two models were similar, the less complicated first order decay model appeared to be the best choice in predicting appropriate loading rates for the future full-scale wetland restorations.

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Section: No 3 -N Removal Kinetic Modelsmentioning

confidence: 99%

“…The ρ FO , the mass transfer coefficient (cm d −1 ), accounts for the intrinsic ability for the soil to retain NO 3 -N by including depth, which is often ignored by using other removal rate constants (i.e., k (d −1 )) in first order decay model evaluations. The model can be expressed mathematically as [37]:…”

Section: First Order Decay (Fo) Modelmentioning

confidence: 99%

Comparison of Four Nitrate Removal Kinetic Models in Two Distinct Wetland Restoration Mesocosm Systems

Messer

Burchell

Bírgand

2017

Water

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“…Few applications considered the potential reversal of flow at the interface and its impact on nitrate removal at the catchment scale (Conan et al, 2003;Galbiati et al, 2006), but until today the exact quantification of the intensity of the removal due to various processes occurring at the stream-aquifer interface remains uncertain (Flipo et al, 2007a). Although certain control factors of biogeochemical processes occurring at the stream-aquifer interface are known, such as water residence time, nitrate concentration or organic matter content (Carleton and Montas, 2010;Dahm et al, 1998;Hill et al, 1998;Kjellin et al, 2007;Peyrard et al, 2011;Rivett et al, 2008;Weng et al, 2003), as well as water level fluctuations (Burt et al, 2002;Dahm et al, 1998;Hefting et al, 2004;Turlan et al, 2007), numerical models remain limited by their ability to simulate water pathways in the interface properly (Burt, 2005). Consequently, largescale biogeochemical models lack predictive abilities with regard to climate change issues or the assessment of the implementation of environmental regulatory frameworks, such as the European Water Framework Directive (WFD) (Parliament Council of the European Union, 2000).…”

Section: Introductionmentioning

confidence: 99%

Continental hydrosystem modelling: the concept of nested stream–aquifer interfaces

Flipo

Mouhri

Labarthe

et al. 2014

Hydrol. Earth Syst. Sci.

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Abstract. Coupled hydrological-hydrogeological models, emphasising the importance of the stream-aquifer interface, are more and more used in hydrological sciences for pluridisciplinary studies aiming at investigating environmental issues. Based on an extensive literature review, stream-aquifer interfaces are described at five different scales: local [10 cm- . This led us to develop the concept of nested stream-aquifer interfaces, which extends the well-known vision of nested groundwater pathways towards the surface, where the mixing of low frequency processes and high frequency processes coupled with the complexity of geomorphological features and heterogeneities creates hydrological spiralling. This conceptual framework allows the identification of a hierarchical order of the multi-scale control factors of stream-aquifer hydrological exchanges, from the larger scale to the finer scale. The hyporheic corridor, which couples the river to its 3-D hyporheic zone, is then identified as the key component for scaling hydrological processes occurring at the interface. The identification of the hyporheic corridor as the support of the hydrological processes scaling is an important step for the development of regional studies, which is one of the main concerns for water practitioners and resources managers.In a second part, the modelling of the stream-aquifer interface at various scales is investigated with the help of the conductance model. Although the usage of the temperature as a tracer of the flow is a robust method for the assessment of stream-aquifer exchanges at the local scale, there is a crucial need to develop innovative methodologies for assessing stream-aquifer exchanges at the regional scale. After formulating the conductance model at the regional and intermediate scales, we address this challenging issue with the development of an iterative modelling methodology, which ensures the consistency of stream-aquifer exchanges between the intermediate and regional scales.Finally, practical recommendations are provided for the study of the interface using the innovative methodology MIM (Measurements-Interpolation-Modelling), which is graphically developed, scaling in space the three pools of methods needed to fully understand stream-aquifer interfaces at various scales. In the MIM space, stream-aquifer interfaces that can be studied by a given approach are localised. The efficiency of the method is demonstrated with two examples. The first one proposes an upscaling framework, structured around river reaches of ∼ 10-100 m, from the local to the watershed scale. The second example highlights the usefulness of space borne data to improve the assessment of streamaquifer exchanges at the regional and continental scales. We conclude that further developments in modelling and field measurements have to be undertaken at the regional scale to enable a proper modelling of stream-aquifer exchanges from the local to the continental scale.

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“…Paul and Meyer, 2001). Nutrient uptakes rates are interesting indicators of the biogeochemical function of streams and the ability to quantify this uptake function (Turlan et al, 2007). Stream metabolism and stream communities affect the processes that influence nutrient uptake rates and thus nutrients loads, but it is not yet clear from the literature what are the respective contributions of these processes to nutrient uptake rate variations (Newbold et al, 1981).…”

Section: Introductionmentioning

confidence: 99%

Effects of wastewater treatment plant pollution on in-stream ecosystems functions in an agricultural watershed

Sánchez‐Pérez

Gérino²,

Sauvage³

et al. 2009

Ann. Limnol. - Int. J. Lim.

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-We studied the effect of point-source and non-point-source pollution on the retention capacity of the stream and its link with the metabolic state (primary production and respiration) and invertebrates assemblages in a third order Mediterranean stream. Two experimental sites were chosen: one in the upper part of the catchment (Monte´gut site) characterized by low concentrations in nitrate and phosphate and one in the lower part of the catchment (Le´zat site) characterized by high nitrate and phosphorus concentrations. Both experimental sites were located on reaches that included a Waste Water Treatment Plant (WWTP) point nutrient source allowing discussion of the relative effects of point-source and non-point-source nutrients loads on ecosystem function (respiration and uptake rates) and aquatic organism assemblages. NH 4 + -N, and PO 4 3x -P uptake rates were determined using solute additions conducted at constant rates (short-term nutrient addition procedure) and NO 3x -N uptake rates were determined using instantaneous solute addition (slug addition procedure). Rates of gross primary production (GPP) and ecosystem respiration were determined using the open system, two-stations diurnal oxygen change method. Benthic invertebrate communities were investigated for species and functional feeding groups diversities measurements. Results show that autotrophy in the river results from nutrients of two distinct origins: point sources for phosphorus (urban area and WWTP) and non-point sources for nitrogen (agricultural zones) with local additions from WWTP inputs.Comparison between the two sites shows that the WWTP did not affect uptake rates, respiration or primary production of the ecosystem in the low-nutrient Monte´gut reach despite increase of invertebrates communities biomass density. Inputs from the WWTP, in the high nitrate and phosphate Le´zat reach, increased respiration, lower benthic biomass and led to changes in the species composition and did not affect uptake rates.

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Comparative use of field and laboratory mesocosms for in-stream nitrate uptake measurement

Cited by 13 publications

References 24 publications

Comparison of Four Nitrate Removal Kinetic Models in Two Distinct Wetland Restoration Mesocosm Systems

Comparison of Four Nitrate Removal Kinetic Models in Two Distinct Wetland Restoration Mesocosm Systems

Continental hydrosystem modelling: the concept of nested stream–aquifer interfaces

Effects of wastewater treatment plant pollution on in-stream ecosystems functions in an agricultural watershed

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