Tuesday, November 14, 2006

Bulk Deposition of Ammonia in Semi-Arid Ecosystems.

J. C. Turner and Jeff Hattey. Oklahoma State Univ, 810 W 7th Ave, Stillwater, OK 74074-4506

A study was conducted to evaluate the spatial deposition of ammonia surrounding a swine production facility in a semi-arid ecosystem.  Previous studies have focused on more humid environments with sustained wind speeds at very low levels.  This study evaluated the bulk depositional gradient of ammonia in a low humidity environment where sustained wind speeds average 6.5 m s-1, nearly twice those of other studies.  Radial transects were set up to measure and monitor the bulk deposition of ammonia on a monthly basis.  Variable wind speeds have greatly influenced the depositional patterns of ammonia.