"Habitat enhancement" means the manipulation of the physical, chemical, or biological characteristics of a wetland or fish and wildlife habitat conservation area to heighten, intensify or improve specific function(s) or to change the growth stage or composition of the vegetation present. Enhancement is undertaken for specified purposes such as water quality improvement, flood water retention or preservation of wildlife habitat. (Added by Amended Ord. 02-064, Dec. 9, 2002, Eff date Feb. 1, 2003; Amended by Amended Ord. 06-061, Aug. 1, 2007, Eff date Oct. 1, 2007).