作者: Marianne Peroutka , Wolfram Adlassnig , Michael Volgger , Thomas Lendl , Walter G. Url
DOI: 10.1007/S11258-008-9420-3
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摘要: Aquatic carnivorous plants of the genus Utricularia capture and utilise a wide range small aquatic organisms. Most literature focuses on animals as prey. In this study, we investigate occurrence algae inside traps four species bladderwort. We observed that 45 genera form up to 80% total prey; were found frequently in without animal The majority are coccal trichal families Desmidiaceae Zygnemataceae. percentage increases significantly with decreasing electric conductivity water (r S = −0.417; P = 0,000). Thus, most frequent prey extremely soft waters. did not differ significantly, within investigated or various study sites. However, taxonomic composition algal showed highly significant differences between different More than 90% trapped killed degraded by bladders. recent data allow for two alternative hypotheses: either supplements oligotrophic waters, unprofitable trapping is rather an additional stress factor contributes its limited distribution some peat bogs.