Modeling the interaction between fields and a surrounding hedgerow network and its impact on water and nitrogen flows of a small watershed

Benhamou, Cyril; Salmon-Monviola, Jordy; Durand, Patrick; Grimaldi, C.; Mérot, Philippe

doi:10.1016/j.agwat.2013.01.004

Cited by 24 publications

(32 citation statements)

References 38 publications

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“…In this perspective, we opted for unfertilized grassland mown three times per year with exportation of the cut grass rather than for afforestation. The reason are that the net uptake rate is higher for regularly cut grassland than for recently planted trees, and regular harvest export significant amounts of N while for trees the only short term sink is the immobilisation in wood and roots (Benhamou et al 2013). Different studies have confirmed that young forests are usually not able to limit nitrogen losses in the years following a clear cut (e.g.…”

Section: Landscape Management Scenariosmentioning

confidence: 99%

“…TNT2 model have been thoroughly tested and is now used for research and operational studies on N cycling in landscape (Chambaut et al 2008;Moreau et al 2012b;Oehler et al 2009b;Viaud et al 2005). Detailed descriptions of the model can be found elsewhere (Beaujouan et al 2002;Ferrant et al 2011;Moreau et al 2012b;Oehler et al 2009b;Benhamou et al 2013). The model applies more specifically to small rural catchments (typically, less than 100 km 2 ) in the temperate zone, with shallow groundwater systems.…”

Section: Landscape Management Scenariosmentioning

confidence: 99%

“…The seasonal and pluri-annual variations of concentrations were relatively well reproduced in both sites (relative mean absolute error of 14% for Kervidy-Naizin and 28% for Auradé), although in detail the model failed to reproduce at a daily time step the measured variations of instantaneous concentration. Further discussion on the performance of the model in both sites can be found in previous papers (Benhamou et al 2013;Ferrant et al 2011;.…”

Section: Calibrationmentioning

confidence: 99%

See 2 more Smart Citations

Reduction of stream nitrate concentrations by land management in contrasted landscapes

Casal

Durand

Akkal-Corfini

et al. 2019

Nutr Cycl Agroecosyst

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Section: Landscape Management Scenariosmentioning

confidence: 99%

Section: Landscape Management Scenariosmentioning

confidence: 99%

Section: Calibrationmentioning

confidence: 99%

See 1 more Smart Citation

Reduction of stream nitrate concentrations by land management in contrasted landscapes

Casal

Durand

Akkal-Corfini

et al. 2019

Nutr Cycl Agroecosyst

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“…Agricultural land use consists of 85% arable crops (mainly cereals and maize) and 15% grassland. Hedgerow density is low (46 m ha −1 ), but the stream network is protected by a row of trees and there is no presence of cattle near the stream network [ Benhamou et al ., ]. Estimated soil P surplus was 13.1 kg P ha −1 yr −1 [ Dupas et al ., ], and soil extractable P (Olsen method, ISO 11263) in 2013 was 62 ± 28 mg P kg −1 (n = 86 samples).…”

Section: Methodsmentioning

confidence: 99%

Identifying seasonal patterns of phosphorus storm dynamics with dynamic time warping

Dupas

Tavenard

Fovet

et al. 2015

Water Resources Research

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International audiencePhosphorus (P) transfer during storm events represents a significant part of annual P loads in streams and contributes to eutrophication in downstream water bodies. To improve understanding of P storm dynamics, automated or semiautomated methods are needed to extract meaningful information from ever-growing water quality measurement data sets. In this paper, seasonal patterns of P storm dynamics are identified in two contrasting watersheds (arable and grassland) through Dynamic Time Warping (DTW) combined with k-means clustering. DTW was used to align discharge time series of different lengths and with differences in phase, which allowed robust application of a k-means clustering algorithm on rescaled P time series. In the arable watershed, the main storm pattern identified from autumn to winter displayed distinct export dynamics for particulate and dissolved P, which suggests independent transport mechanisms for both P forms. Conversely, the main storm pattern identified in spring displayed synchronized export of particulate and dissolved P. In the grassland watershed, the occurrence of synchronized export of dissolved and particulate P forms was not related to the season, but rather to the amplitude of storm events. Differences between the seasonal distributions of the patterns identified for the two watersheds were interpreted in terms of P sources and transport pathways. The DTW-based clustering algorithm used in this study proved useful for identifying common patterns in water quality time series and for isolating unusual events. It will open new possibilities for interpreting the high-frequency and multiparameter water quality time series that are currently acquired worldwide

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“…or landscape management scenarios (hedgerow density, protection of riparian wetlands, etc.) (Viaud et al, 2005;Benhamou et al, 2013) on stream nitrate export .…”

Section: Approach: Modeling Scenarios For Landscape Nitrogen Managementmentioning

confidence: 99%

Evolution of scientific questions over 50 years in the Kervidy-Naizin catchment: from catchment hydrology to integrated studies of biogeochemical cycles and agroecosystems in a rural landscape

Gascuel‐Odoux

Fovet

Gruau

et al. 2018

CIG

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ABSTRACT. Catchment studies on water quality started in the 1960s, when scientists identified longterm environmental impacts and realized the complexity involved in environmental degradation P A P E R A C C E P T E D . P R E -P R I N T V E R S I O NGascuel-Odoux et al. Key words: research catchment, long-term monitoring, interdisciplinary research, environmental observatoryPalabras clave: cuenca de investigación; monitoreo a largo plazo; investigación interdisciplinar; observatorio medioambiental.

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Modeling the interaction between fields and a surrounding hedgerow network and its impact on water and nitrogen flows of a small watershed

Cited by 24 publications

References 38 publications

Reduction of stream nitrate concentrations by land management in contrasted landscapes

Reduction of stream nitrate concentrations by land management in contrasted landscapes

Identifying seasonal patterns of phosphorus storm dynamics with dynamic time warping

Evolution of scientific questions over 50 years in the Kervidy-Naizin catchment: from catchment hydrology to integrated studies of biogeochemical cycles and agroecosystems in a rural landscape

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