Modelling nitrogen fluxes from the land to the coastal zone in European systems: a perspective from the INCA project

Wade, Andrew J.; Neal, Colin; Whitehead, Paul; Flynn, N.

doi:10.1016/j.jhydrol.2004.07.041

Cited by 28 publications

(15 citation statements)

References 63 publications

(78 reference statements)

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“…For instance, a remarkable effort has been made to assess the ability of a semi-distributed biogeochemical model (INCA) to reproduce stream nitrogen dynamics across European catchments (Wade et al 2005). However, data calibration of their model in Fuirosos has shown the complexities of satisfactorily capturing the variability of nitrate concentrations (Bernal et al 2004).…”

Section: Effects Of Hydrology On Doc and No 3 -Q Hysteresesmentioning

confidence: 99%

Cross-site Comparison of Variability of DOC and Nitrate c–q Hysteresis during the Autumn–winter Period in Three Mediterranean Headwater Streams: A Synthetic Approach

et al. 2006

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The forms, rotational patterns and trends of hysteretic loops of dissolved organic carbon (DOC) and nitrate (NO 3 ) were investigated in three headwater Mediterranean streams during one autumn-winter period using two biogeochemical descriptors summarizing the changes in solute concentrations (DC) and the overall dynamics of each hysteretic loop (DR). The study had two aims: (1) to examine whether the variability of solute hysteretic loops monitored in different streams during cold seasons followed a consistent and recurring pattern, (2) to identify hydrological parameters which could potentially influence features of the DOC and NO 3 hysteresis. Relationships between hysteresis features and hydrological parameters in the studied streams were explored using multivariate redundancy analysis (RDA). Both DOC and NO 3 typically increased in concentration during storm events, although hysteretic loops did not obey any consistent pattern across the three streams. The rotational patterns of DOC and NO 3 hysteresis ranged widely, from clockwise to counterclockwise. Storm hydrographs and also the magnitude of antecedent storm events were explanatory of the DOC and NO 3 concentration changes across the study sites. However, the detailed hydrological information did not offer a satisfactory explanation of the entire DOC and NO 3 concentration dynamics during the storm events.

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Section: Effects Of Hydrology On Doc and No 3 -Q Hysteresesmentioning

confidence: 99%

Cross-site Comparison of Variability of DOC and Nitrate c–q Hysteresis during the Autumn–winter Period in Three Mediterranean Headwater Streams: A Synthetic Approach

et al. 2006

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“…For the INCA analysis presented below, we have chosen to use plain random sampling as this provided extensive (although not necessarily comprehensive) coverage of the parameter space, it allowed univariate effects to be identified with a high level of confidence, and it provided approximations to global optimum parameter sets. While the INCA model has been widely applied (see Neal, 2002;Wade et al, 2005), evaluation of the inherent errors and uncertainties has been very limited, especially with regard to the representation of spatial variability. Raat et al (2004) used a small synthetic catchment, to illustrate the potential problem of parameter equifinality within INCA and the value of using multi-objective calibration.…”

Section: Calibration and Sensitivity Analysis Of Catchment Modelsmentioning

confidence: 99%

Sensitivity analysis of a catchment-scale nitrogen model

McIntyre

Jackson

Wade

et al. 2005

Journal of Hydrology

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“…Over the last few centuries, land use change has taken place on a global scale increasing the area of different types of agricultural land (Goldewijk, 2001). One of the most significant changes in agricultural systems is the increase in nitrogen (N) inputs caused by application of mineral and organic fertiliser as well as organic manures associated with grazing livestock (Nieder and Benbi, 2010;Wade et al, 2005). However, significant uncertainties remain about the influence of land use on N export to the aquatic system at the catchment scale, due to the complexity of N dynamics in terrestrial systems (Alvarez-Cobelas et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Catchment land use effects on fluxes and concentrations of organic and inorganic nitrogen in streams

Vogt

Braban

Dragosits

et al. 2015

Agriculture, Ecosystems & Environment

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Michael F. 2015. Catchment land use effects on fluxes and concentrations of organic and inorganic nitrogen in streams.Contact CEH NORA team at noraceh@ceh.ac.ukThe NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. ) and dissolved organic nitrogen (DON) in two adjacent Scottish catchments with contrasting land use (agricultural grassland vs. semi-natural moorland). Inter-and intra-catchment variation in N species and the relation to spatial differences in agricultural land use were studied by determining catchment N input through agricultural activities at the field scale and atmospheric inputs at a 25 m grid resolution. The average agricultural N input of 52 kg N ha -1 yr -1 to the grassland catchment was more than four times higher than the input of 12 kg N ha -1 yr -1 to the moorland catchment, supplemented by 12.3 and 8.2 kg N ha -1 yr -1 through atmospheric deposition, respectively. The grassland catchment was associated with an annual downstream total dissolved nitrogen (TDN) flux of 14.4 kg N ha -1 yr -1, which was 66% higher than the flux of 8.7 kg ha -1 yr -1 from the moorland catchment. This difference was largely due to the NO 3 -flux being one order of magnitude higher in the grassland catchment. Dissolved organic N fluxes were similar for the two catchments (7.0 kg ha -1 yr -1 ) with DON contributing 49% to the TDN flux in the grassland compared with 81% in the moorland catchment. The results highlight the importance of diffuse agricultural N inputs to stream NO 3 -concentrations and the importance of quantifying all the major aquatic N species for developing a better understanding of N transformations and transport in the atmosphere-soil-water system.

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Modelling nitrogen fluxes from the land to the coastal zone in European systems: a perspective from the INCA project

Cited by 28 publications

References 63 publications

Cross-site Comparison of Variability of DOC and Nitrate c–q Hysteresis during the Autumn–winter Period in Three Mediterranean Headwater Streams: A Synthetic Approach

Cross-site Comparison of Variability of DOC and Nitrate c–q Hysteresis during the Autumn–winter Period in Three Mediterranean Headwater Streams: A Synthetic Approach

Sensitivity analysis of a catchment-scale nitrogen model

Catchment land use effects on fluxes and concentrations of organic and inorganic nitrogen in streams

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