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Differences In Aquatic Microcrustacean Assemblages Between Temporary And Perennial Springs Of An Alpine Karstic Aquifer, Nataša Mori, Anton Brancelj
Differences In Aquatic Microcrustacean Assemblages Between Temporary And Perennial Springs Of An Alpine Karstic Aquifer, Nataša Mori, Anton Brancelj
International Journal of Speleology
Microcrustacean (Copepoda, Ostracoda) assemblages were investigated at the interface of the vadose and phreatic zones in the alpine karstic aquifer from the Julian Alps in Slovenia (SE Europe). Two temporary and one perennial karstic outlets were sampled by filtering the water several times over 2 years. Concurrently, benthos from the mouth of a perennial spring and from an adjacent spring brook were collected. Altogether 24 microcrustacean species were recorded. The spatial and temporal variation in drift densities and species composition was high indicating complex groundwater hydrological pathways being dependent on precipitation regime. Non-metric Multidimensional Scaling (NMDS) clearly separated drift samples …