Diver-Assisted Suction Harvesting (DASH) is a relatively new technique that can be used to manage aquatic invasive plants (AIPs). DASH uses SCUBA divers to identify and hand-pull intact AIPs out of the sediment of an inland lake and can be effective in certain situations. However, careful consideration of site-specific characteristics is extremely important when determining whether DASH can be successful in a particular area of a waterbody. If DASH is conducted in areas with unfavorable site characteristics, performed by inexperienced people, or undertaken without the proper equipment there is the potential to unintentionally spread invasive species, remove native vegetation, and disrupt benthic sediment and habitats. DASH, its impacts, and permit requirements will be discussed.
Considerations when applying for permits for Diver-Assisted Suction Harvesting
Michigan Department of Environmental Quality