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Use of the NIT18 infrastructure for multi-pollutant monitoring - WQ0100NIT

Objective
Objectives

1. Enhanced value from surface-water site installations: P, sediment. To characterise sediment and phosphorus export from selected catchments within Nitrate Vulnerable Zones and evaluate in the context of pollution swapping, sediment pressures, eutrophication and catchment management.
2. Enhanced value from surface-water site installations: non-nitrate N. To quantify the importance of transfers of nitrogen in forms other than nitrate (ammonium- N (NH4-N) and dissolved organic N (DON)) for water quality and to better understand the interaction between farming system and forms of nitrogen found in surface waters.
3. Quantification of impacts of NVZ AP on other pollutants: P, sediment. To provide a quantitative assessment of the national scale effect of NVZ measures on P and sediment emissions to water through use of the PSYCHIC model. To undertake further validation and improvement of the PSYCHIC model, so as to improve confidence in policy derived from its use.
4. Quantification of impacts of NVZ AP on other pollutants: Ammonia. To provide a quantitative assessment of the national scale effect of NVZ measures on ammonia emissions to air.

Specific objectives
Enhanced value from surface-water site installations: P, sediment
1.1. To investigate the spatial and temporal variation in sediment and phosphorus forms in headwater streams draining ten surface water catchments (part of Defra project NIT18) in relation to farming practice data recorded within this project.
1.2. To assess the importance of sediment and phosphorus emissions relative to nitrogen for water quality in each catchment and the implications for catchment management and the development of measures.

Enhanced value from surface-water site installations: non-nitrate forms of N
2.1. To investigate the spatial and temporal variation in non-nitrate forms of N in headwater streams draining ten surface water catchments (part of Defra project NIT18) in relation to farming practices and implications for nitrogen policy.

Quantification of impacts of NVZ AP on other pollutants: P and sediment loss to water.
3.1. To undertake further validation and development of the PSYCHIC model by use of the measurements above as a field-scale data set to provide a more robust tool for use in estimating the impact of NVZ AP measures on P and sediment.
3.2. To estimate the impact of the NVZ AP and underlying changes in land use and management on P and sediment emissions to water, using the catchment-scale PSYCHIC model with MAGPIE spatial data.
3.3. To estimate the emissions of P and sediment from agricultural land to waters in 2015 under the revised NVZ AP, taking account of BAU predictions for 2015.

Quantification of impacts of NVZ AP on other pollutants: Ammonia emission to air.
4.1. To estimate the impact of the NVZ AP measures on ammonia emissions to air, using the MANNER model embedded within the MAGPIE spatial database.
4.2. To estimate the emissions of ammonia from agricultural land to air in 2015 under the revised NVZ AP, taking account of BAU predictions for 2015 and other changes, using the results of objective 4.1 together with the NARSES national ammonia inventory.
Time-Scale and Cost
From: 2008

To: 2011

Cost: £878,856
Contractor / Funded Organisations
ADAS UK Ltd.
Keywords
Environmental monitoring              
Environmental Protection              
NVZ              
Water quality monitoring