Ammonia emissions from a Cape fur seal colony, Cape Cross, Namibia

Theobald, MR and Crittenden, PD and Hunt, Amelia and Tang, YS and Dragosits, U and Sutton, MA (2006) Ammonia emissions from a Cape fur seal colony, Cape Cross, Namibia. Geophysical Research Letters, 33 (3). ISSN 0094-8276

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Abstract

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 mu 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.

Item Type:
Journal Article
Journal or Publication Title:
Geophysical Research Letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1900
Subjects:
ID Code:
61526
Deposited By:
Deposited On:
07 Jan 2013 12:17
Refereed?:
Yes
Published?:
Published
Last Modified:
24 Mar 2020 03:16