Meiofauna of the Koster-area, results from a workshop at the Sven Lovén Centre for Marine Sciences (Tjärnö, Sweden)

During a two-week workshop held at the Sven Lovén Centre for Marine Sciences on Tjärnö, an island on theSwedish west-coast, meiofauna was studied in a large variety of habitats using a wide range of sampling techniques.Almost 100 samples coming from littoral beaches, rock pools and different types of sublittoral sand- andmudflats yielded a total of 430 species, a conservative estimate. The main focus was on acoels, proseriate andrhabdocoel flatworms, rotifers, nematodes, gastrotrichs, copepods and some smaller taxa, like nemertodermatids,gnathostomulids, cycliophorans, dorvilleid polychaetes, priapulids, kinorhynchs, tardigrades and some otherflatworms. As this is a preliminary report, some species still have to be positively identified and/or described, as157 species were new for the Swedish fauna and 27 are possibly new to science. Each taxon is discussed separatelyand accompanied by a detailed species list.