Author/Editor		Sket, Boris
Title		Biodiversitaet im Oekosystem Grundwasse oder was lebt denn so im Grundwasser?
Type		članek
Source		Gas- und Wasserfach. Wasser, Abwasser
Vol. and No.		Letnik 146, št. 7-8
Publication year		2005
Volume		str. 564-7
Language		ger
Abstract		Main types of subterranean aquatic environments are interstitial waters and cave and fissure waters, but in any system a number of different habitats may develop.The biodiversity in a habitat is declining with growing severity of living conditions (towards emphasized„cave conditions").Troglobionts exhibit high competition vigor in clean subterranean waters while surface animals are stronger in food rich habitats; therefore they may outcompete troglobionts in sinking rivers or in organically polluted subterranean waters. The increasing species ratio epigean/troglobiotic indicates growing organic pollution. According to data from 1978, over 1000 species (the number is growing rapidly; 685 species known only from Balkans in 2000) i.e. ca 8% of all aquatic animals in Europe was known to be specialized to groundwater. Some most important groups and species of groundwater fauna are presented in the text.
Descriptors		FRESH WATER ECOSYSTEM ANIMALS