Application of the FARMSCOPER tool for assessing agricultural diffuse pollution mitigation methods across the Hampshire Avon Demonstration Test Catchment, UK

Zhang, Y.; Collins, Adrian L.; Gooday, Richard

doi:10.1016/j.envsci.2012.08.003

Cited by 39 publications

(22 citation statements)

References 26 publications

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“…Figure 6 shows at a regional scale there a substantial historical mass of nitrate Environmental managers should take into account this mass when considering the implementation of catchment mitigation measures in attempts to improve groundwater, surface water and ecological quality. These measures typically consist of changes to agricultural practices through on-farm approaches (Zhang et al, 2012) and larger-scale interventions such nitrate vulnerable zones (Johnson et al, 2007). At the national scale, assessing where there is significant vadose zone N storage would be useful in setting timescales and objectives for improvements in waterbody environmental status.…”

Section: Discussionmentioning

confidence: 99%

Quantification of nitrate storage in the vadose (unsaturated) zone: a missing component of terrestrial N budgets

et al. 2016

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Abstract:National terrestrial nitrogen budgets for many developed countries have been calculated as part of the management of impacts of N on the environment, but these rarely represent the subsurface explicitly. Using estimates of vadose zone travel time and agricultural nitrate loading, we quantify, for the first time, the total mass of nitrate contained in the vadose zone of aquifers in England and Wales. This mass peaked in 2008 at 1400 kt N (800 to >1700 kt N from sensitivity analyses), which is approximately 2.5 to 6 times greater than saturated zone estimates for this period and indicates that the subsurface is an important store of reactive nitrogen. About 70% of the nitrate mass is estimated to be in the Chalk, with the remainder split between the Permo-Triassic sandstones, the Jurassic Oolitic limestones and minor aquifers. Current controls on fertilizer application mean that the vadose zone is now a nitrate source, and in 2015 we estimate the net flux from the unsaturated zone to groundwater to be 72 kt N/a. The mass of nitrate in the vadose zone should be included in future terrestrial nitrogen budgets at national and global scales to improve ecosystem management. British Geological Survey

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Section: Discussionmentioning

confidence: 99%

Quantification of nitrate storage in the vadose (unsaturated) zone: a missing component of terrestrial N budgets

et al. 2016

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“…Guidance on the preparation of farm‐scale soil erosion risk maps, manure management plans, and nutrient budgeting provide examples of general existing DSSs available to farmers to help enact good practice, but their adoption has been voluntary. A Microsoft Excel‐based DST (FARMSCOPER, http://www.adas.uk/Service/farmscoper) has been developed in the UK to compare and prioritize mitigation measures that span the source–mobilization–delivery continuum based on an analysis of assessment of their costs and efficacy (Zhang et al, 2012; Gooday et al, 2014). …”

Section: United Kingdom and Republic Of Irelandmentioning

confidence: 99%

A Global Perspective on Phosphorus Management Decision Support in Agriculture: Lessons Learned and Future Directions

et al. 2019

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The evolution of phosphorus (P) management decision support tools (DSTs) and systems (DSS), in support of food and environmental security has been most strongly affected in developed regions by national strategies (i) to optimize levels of plant available P in agricultural soils, and (ii) to mitigate P runoff to water bodies. In the United States, Western Europe, and New Zealand, combinations of regulatory and voluntary strategies, sometimes backed by economic incentives, have often been driven by reactive legislation to protect water bodies. Farmer‐specific DSSs, either based on modeling of P transfer source and transport mechanisms, or when coupled with farm‐specific information or local knowledge, have typically guided best practices, education, and implementation, yet applying DSSs in data poor catchments and/or where user adoption is poor hampers the effectiveness of these systems. Recent developments focused on integrated digital mapping of hydrologically sensitive areas and critical source areas, sometimes using real‐time data and weather forecasting, have rapidly advanced runoff modeling and education. Advances in technology related to monitoring, imaging, sensors, remote sensing, and analytical instrumentation will facilitate the development of DSSs that can predict heterogeneity over wider geographical areas. However, significant challenges remain in developing DSSs that incorporate “big data” in a format that is acceptable to users, and that adequately accounts for catchment variability, farming systems, and farmer behavior. Future efforts will undoubtedly focus on improving efficiency and conserving phosphate rock reserves in the face of future scarcity or prohibitive cost. Most importantly, the principles reviewed here are critical for sustainable agriculture. Core Ideas Strategies protecting water bodies are often driven by reactive legislation. Phosphorus management focuses on plant available P and mitigating P runoff. Decision support is based on P transfer, best practices, education, and action. Recent scientific developments have rapidly advanced runoff modeling and education. DS challenges are “big data,” farming systems, and farmer behavior.

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“…By simulating the phosphorus balances throughout the catchment and applying a series of management strategies, we aim to quantify the effects of alternative control measures such as P removal at WWTPs or P reductions from agricultural sources. Phosphorus budgets and mitigation measures have been investigated from a field data perspective or an export coefficient approach by many lead researchers such as Sharpley et al (1994), Jarvie et al (2002Jarvie et al ( , 2006, Johnes and Butterfield (2003), Neal and Jarvie (2005), Neal et al (2010Neal et al ( , 2006 and Zhang et al (2012), but in this study we utilise a process based dynamic model, which allows a more complete mass balance and an assessment of the dynamic interactions within the catchment.…”

Section: Introductionmentioning

confidence: 99%

Distributed and dynamic modelling of hydrology, phosphorus and ecology in the Hampshire Avon and Blashford Lakes: Evaluating alternative strategies to meet WFD standards

Whitehead

Jin

Crossman

et al. 2014

Science of The Total Environment

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The issues of diffuse and point source phosphorus (P) pollution in the Hampshire Avon and Blashford Lakes are explored using a catchment model of the river system. A multibranch, process based, dynamic water quality model (INCA-P) has been applied to the whole river system to simulate water fluxes, total phosphorus (TP) and soluble reactive phosphorus (SRP) concentrations and ecology. The model has been used to assess impacts of both agricultural runoff and point sources from waste water treatment plants (WWTPs) on water quality. The results show that agriculture contributes approximately 40% of the phosphorus load and point sources the other 60% of the load in this catchment. A set of scenarios have been investigated to assess the impacts of alternative phosphorus reduction strategies and it is shown that a combined strategy of agricultural phosphorus reduction through either fertiliser reductions or better phosphorus management together with improved treatment at WWTPs would reduce the SRP concentrations in the river to acceptable levels to meet the EU Water Framework Directive (WFD) requirements. A seasonal strategy for WWTP phosphorus reductions would achieve significant benefits at reduced cost.

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Application of the FARMSCOPER tool for assessing agricultural diffuse pollution mitigation methods across the Hampshire Avon Demonstration Test Catchment, UK

Cited by 39 publications

References 26 publications

Quantification of nitrate storage in the vadose (unsaturated) zone: a missing component of terrestrial N budgets

Quantification of nitrate storage in the vadose (unsaturated) zone: a missing component of terrestrial N budgets

A Global Perspective on Phosphorus Management Decision Support in Agriculture: Lessons Learned and Future Directions

Distributed and dynamic modelling of hydrology, phosphorus and ecology in the Hampshire Avon and Blashford Lakes: Evaluating alternative strategies to meet WFD standards

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