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Detailed Reference Information |
Theobald, M.R., Crittenden, P.D., Hunt, A.P., Tang, Y.S., Dragosits, U. and Sutton, M.A. (2006). Ammonia emissions from a Cape fur seal colony, Cape Cross, Namibia. Geophysical Research Letters 33: doi: 10.1029/2005GL024384. issn: 0094-8276. |
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Large animal colonies are significant sources of atmospheric NH3 that can potentially increase the nitrogen status of nearby ecosystems. Atmospheric NH3 concentrations were measured at different distances from a Cape fur seal colony at Cape Cross, northwest coast of Namibia, and an atmospheric dispersion model was applied inversely to estimate the total NH3 emission. Mean concentrations ranged from 354 to 0.01 ¿g NH3 m-3 at 0.01 and 26 km from the source, respectively. The model simulations suggest that the colony emits 25--70 tonnes of NH3-N yr-1, c. 3% of the total N excreted by the seals. |
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Abstract |
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Keywords
Atmospheric Composition and Structure, Biosphere/atmosphere interactions (0426, 1610), Biogeosciences, Nitrogen cycling, Biogeosciences, Nutrients and nutrient cycling (4845, 4850) |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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