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Bioindicators of enhanced nitrogen deposition

Pitcairn, C E R; Fowler, D.; Leith, I. D.; Sheppard, L. J.; Sutton, M. A.; Kennedy, V; Okello, E. 2003 Bioindicators of enhanced nitrogen deposition. Environmental Pollution, 126 (3). 353-361. 10.1016/S0269-7491(03)00248-3

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Abstract/Summary

Increased deposition of atmospheric N largely from intensive agriculture is affecting biodiversity and the composition of natural and semi-natural vegetation in Europe. The value of species based bioindicators such as the Ellenberg N index and measurements of total tissue N and free amino acids in key plant species, is described with reference to a mixed woodland downwind of a livestock farm in the Scottish Borders, operated for over 20 years with a measured spatial gradient of ammonia concentration (29–1.5 mg m3). All the indicators examined showed a relationship with N deposition and provided some indication of vegetation change. Total tissue N and arginine concentrations were most closely linked with ammonia concentrations and N deposition, with r2 values of >0.97 and >0.78 respectively.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/S0269-7491(03)00248-3
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry > BG02 Recovery from acidification and eutrophication
CEH Sections: _ Biogeochemistry & Ecosystem Function
ISSN: 0269-7491
Additional Keywords: Bioindicators, N deposition, Ellenberg N Index, Tissue N, Amino acids
NORA Subject Terms: Ecology and Environment
Atmospheric Sciences
Date made live: 03 Sep 2008 13:07
URI: http://nora.nerc.ac.uk/id/eprint/3625

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