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Your search keyword '"L. van der Eerden"' showing total 2 results
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2 results on '"L. van der Eerden"'

1. Report of Atmospheric Pollution Working Group

Author

S. Nogues, A. M. Farmer, L. van der Eerden, T. A. Mansfield, C. Biel, C. R. Black, G. Terry, J. J. van Oosten, J. D. Barnes, G. Schenone, V. J. Black, H. Z. Enoch, and B. R. Jordan

Subjects
Atmospheric composition, Pollutant, chemistry.chemical_compound, Carbon dioxide in Earth's atmosphere, Ozone, chemistry, Air pollutants, Environmental chemistry, Global warming, Environmental science, Atmospheric pollution, NOx
Abstract

Concerns about global warming and the role of rising atmospheric carbon dioxide (CO2) content seem to have relegated studies of the effects of air pollutants to a position of secondary importance. There are very strong arguments for a continuing high profile for research on the impacts of nitrogenous air pollutants (NOx, NH3), ozone (O3) and non-methane hydrocarbons (NMHCs). Atmospheric concentrations of these pollutants are increasing steadily and it is highly probable that they will continue to do so. Furthermore, these changes in atmospheric composition will be accompanied by increasing levels of UV-B radiation.

Published
1993
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2. Effects of atmospheric ammonia on vegetation--a review.

Author

Fangmeier A, Hadwiger-Fangmeier A, Van der Eerden L, and Jäger HJ

Abstract

Atmospheric ammonia does not only cause acute injuries at vegetation close to the source, but significantly contributes to large scale nitrogen eutrophication and acidification of ecosystems because the amount of sources is high and after conversion to ammonium it can reach remote areas by long-range atmospheric transport. Besides having acute toxic potential, NH(3) and NH(4)(+) (= NH(y)) may disturb vegetation by secondary metabolic changes due to increased NH(y) uptake and assimilation leading to higher susceptibility to abiotic (drought, frost) and biotic (pests) stress. Prevention of damage to natural and semi-natural ecosystems will only be achieved if NH(3) emissions are drastically reduced. In this paper, the current knowledge on NH(y) emission, deposition, and its effects on vegetation and ecosystems are reviewed. Critical levels and critical loads for nitrogen deposition are discussed.

Published
1994
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