Upwind impacts of ammonia from an intensive poultry unit

Jones, L. ORCID:; Nizam, M.S.; Reynolds, B.; Bareham, S.; Oxley, E.R.B.. 2013 Upwind impacts of ammonia from an intensive poultry unit. Environmental Pollution, 180. 221-228.

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This study investigated potential ammonia impacts on a sand dune nature reserve 600 m upwind of an intensive poultry unit. Ammonia concentrations and total nitrogen deposition were measured over a calendar year. A series of ammonia and nitrogen exposure experiments using dune grassland species were conducted in controlled manipulations and in the field. Ammonia emissions from the intensive poultry unit were detected up to 2.8 km upwind, contributing to exceedance of critical levels of ammonia 800 m upwind and exceedance of critical loads of nitrogen 2.8 km upwind. Emissions contributed 30% of the total N load in parts of the upwind conservation site. In the nitrogen exposure experiments, plants showed elevated tissue nitrogen contents, and responded to ammonia concentrations and nitrogen deposition loads observed in the conservation site by increasing biomass. Estimated long-term impacts suggest an increase in the soil carbon pool of 9% over a 50-year timescale.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: CEH Topics & Objectives 2009 - 2012 > Biogeochemistry > BGC Topic 3 - Managing Threats to Environment and Health
UKCEH and CEH Sections/Science Areas: Emmett
ISSN: 0269-7491
Additional Keywords: nitrogen deposition, dune grassland, air pollution, agriculture, chicken farm
NORA Subject Terms: Ecology and Environment
Agriculture and Soil Science
Atmospheric Sciences
Date made live: 07 Jan 2014 12:32 +0 (UTC)

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