Dynamics and drivers of the protozoic Si pool along a 10-year chronosequence of initial ecosystem states

摘要: Abstract The size and dynamics of biogenic silicon (BSi) pools influence (Si) fluxes from terrestrial to aquatic ecosystems. research focus up now was on the role plants in Si cycling. In recent studies old forests annual biosilicification rates idiosomic testate amoebae (i.e. TA producing self-secreted silica shells) were shown be order uptake by trees. However, no comparable data exist for initial We analyzed protozoic BSi pool (idiosomic TA), corresponding readily available amorphous fractions along a 10-year chronosequence post-mining landscape Brandenburg, Germany. Idiosomic ranged 3 680 g Si ha−1 about 3–4 times higher at vegetated compared uncovered spots. They increased significantly with age related temporal development soil chemical properties. calculation resulted maxima between 2 16 kg Si ha−1 always Our results showed that is built rapidly during phases ecosystem strongly linked plant growth. Furthermore, our findings highlight importance cycling young artificial