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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 6653

Christer Erseus, Reinmar Grimm, Brenda Healy, Stefan Lundberg, Emilia Rota, and Tarmo Timm; Clitellate diversity in Nationalstadsparken, an urban national park in Stockholm, Sweden. Hydrobiologia 406:101-110, 1999

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To increase the overall faunistic knowledge of Swedish Clitellata, a survey was performed in Nationalstadsparken, a mosaic of fresh and brackish waters, parklands alternating with remnants of natural biota, and areas of urben development, within the cities of Stockholm and Solna on the Baltic coast of Sweden (59 degrees N, 18 degrees E). One hundred and twenty-one species (113 Oligochaeta, 8 Hirudinea) were collected at 31 aquatic and 27 terrestrial or littoral localities; 49 species of Oligochaeta were found at the aquatic localities, 70 species at the terrestrial/littoral sites. Twenty-four species are new records for Sweden, and this urban national park thus features 64% of all non-marine clitellates known from the country. The result is consistent with a view that diversity is enchanced when human activities increase habitat complexity, even in areas in direct contact with a large city.