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Water soldier Stratiotes aloides L. (Hydrocharitaceae) as a substratum for macroinvertebrates in a shallow eutrophic lake

Tarkowska-Kukuryk Monika

Polish Journal of Ecology

2006

Vol. 54, nr 3

441-451

The importance of water soldier (Stratiotes aloides L.) as a colonization substratum for epiphytic and mining fauna has been investigated in the shallow, eutrophic lake in East Poland. Samples were taken in May, July and October in 2000-2001. Studies focused on abundance and species diversity of phytophilous fauna of Stratiotes aloides, in particular on the relation between epiphytic and mining organisms and their seasonal changes. The studied zoocenosis differed significantly in terms of density and taxa number. In all studied seasons fauna inhabiting Stratiotes aloides showed higher abundance and species diversity than mining invertebrates. Both zoocenosis were predominated by Chironomidae larvae. The percentage of midges in epiphytic fauna decreased slightly during vegetation period, the mining fauna showed the opposite pattern. Epiphytic Chironomidae were dominated by four taxa (Dicrotendipes sp., Glyptotendipes sp., Paratanytarsus austriacus, Psectrodadius sp.). The mining fauna was represented mainly by Glyptotendipes sp. larvae. Density and biomass of epiphytic fauna showed the positive correlation with water soldier biomass.