As indicated in Table 1, all leachates contained considerable
amounts of carbohydrates. M. macrocopa behaved contrary to
C. elegans who responded to exposure against polyphenol-rich,
but carbohydrate-poor humic substances with lifespan extension
(Steinberg et al., 2007). In the Moina assay, carbohydrates could
have supported bacterial growth which, in turn, could serve as
good additional food source for the cladocerans. Furthermore, the
leachate with the highest share of polysaccharides, Q. petraea, did
not significantly affect any of the life trait variables, which can
be due contrasting bioavailability of the polysaccharide fractions
of the different leachates