Nitrogen use efficiency in Scotland: annual report 2025

Footnotes

1 The Water Environment (Controlled Activities) (Scotland) Regulations 2011 (Regulation 8)

2 The River Basin District Standards Directions 2014, table C4.5 (page38).

3 Gillibrand, P. A., Gubbins, M. J., Greathead, C., Davies, I. M., 2002. Scottish Executive locational guidelines for fish farming: predicted levels of nutrient enhancement and benthic impact. Scottish Fisheries Research Report Number 63 / 2002 Fisheries Research Services, Marine Laboratory, Aberdeen.

4 Gillibrand P.A. (2006) Improving Assimilative Capacity Modelling for Scottish Coastal Waters: II. A Model of Physical Exchange for Open Water Sites. SAMS Marine Physics Report No. 168.

5 2021 Food Waste Estimate: mf-cdtg7vnr-1696942041d

6 Existing regulations for waste incineration require abatement for NOX and require continuous monitoring with an emission limit value of 150mg/Nm3 (daily average). There is also continuous monitoring for NH3 (ELV of 10mg/ Nm3) for sites which employ SCR or SNCR abatement techniques.

7 Scottish Greenhouse Gas Statistics 2022 - gov.scot (www.gov.scot)

8 By convention, shares of emissions are assessed against net emissions for a given year, i.e. the net CO₂ equivalent gasses added to the atmosphere in that year. However, it would also be valid to compare against gross emissions, excluding removals of CO₂ from the atmosphere from land use, land use change and forestry (LULUCF). On that basis the share of nitrous oxide to gross emissions in 2020 was 5.7 per cent.