Abstracts
Feltkamp, E. & Krupp, F. (eds.), Establishment of a Marina Habitat and Wildlife Sanctuary for the Gulf Region. Final report of phase II. Jubail, Frankfurt a.M.
   

Shoreline Clean-up Procedures. A Discussion Pertaining to the Gulf Sanctuary

A b s t r a c t: Various clean-up techniques are discussed and briefly described, with particular regard to application in the proposed Marine Wildlife Sanctuary for the Gulf Region. This area is still suffering severe oil pollution as a result of the Gulf War oil spill. Trials conducted in the area are evaluated. Flushing techniques in conjunction with agricultural tillers, or using high-pressure rotary jet flushers, the "autoflusher", achieve the best results on sheltered soft-sediment shores. A small manually operated version of the autoflusher may be suitable for application in salt marsh areas, as it can negotiate the creek systems and operate in soft mud without further environmental damage. This system still requires trials and evaluation. High-pressure water jet cleaning of rocky shores should be applied in strips perpendicular to the shore, allowing pockets of surviving fauna to re-establish. In the proposed Sanctuary area the tar is well weathered and is peeling off the rocks by wave action. Resettlement has commenced on most of the rocky shores and further cleaning activities could deplete these struggling populations. The number of species on the clean strips are almost the same as found on the uncleaned strip, but the number of individuals on the clean strips is one third more than that found on the tarred strips. At present there is little to indicate any real biological improvement on the soft-sediment trial clean-up sites over the natural recovery processes, where in some cases, the crab Cleistostoma dotilliforme and the gastropod Pirinella conica have returned. However, natural recovery on the top of the soft-sediment shores would be greatly encouraged by removal of the tar and algal mats.