@misc{PuppeHoehnKaczoreketal., author = {Puppe, Daniel and H{\"o}hn, Axel and Kaczorek, Danuta and Wanner, Manfred and Sommer, Michael}, title = {As time goes by—Spatiotemporal changes of biogenic Si pools in initial}, series = {Applied Soil Ecology}, volume = {105}, journal = {Applied Soil Ecology}, issn = {0929-1393}, doi = {10.1016/j.apsoil.2016.01.020}, pages = {9 -- 16}, abstract = {Accumulation and recycling of biogenic silicon (BSi) in terrestrial ecosystems influence fluxes of dissolved Si from the continents to the oceans, thus act as a filter in the global Si cycle. Although the biogenic control mechanism especially of phytogenic Si pools (phytoliths) has been generally recognized since decades quantitative information on other terrestrial BSi pools is surprisingly rare. For the first time terrestrial protophytic (diatom frustules), protozoic (testate amoeba shells) and zoogenic (sponge spicules) Si pools were quantified in soils of initial ecosystem states. We analyzed spatiotemporal changes of these Si pools in differently aged soils of the artificial catchment 'Chicken Creek' in NE Germany. Within a relatively short time span (<10 years) of ecosystem development protophytic, protozoic and zoogenic Si pool sizes increased markedly, whereat protozoic Si pools were the smallest ones with a maximum of 6.2 mg m-2. Zoogenic Si pool size (max. 22.6 mg m-2) is comparable to the one of protophytic Si pools (max. 30.5 mg m-2) although only few sponge spicules (n = 10) and spicule fragments (n = 2) were found. Differences in quantities, dynamics and resistibility against dissolution of various BSi pools indicate their possibility to influence biogeochemical Si cycling relatively rapid (protophytic and protozoic Si pools) or slow (zoogenic Si pool). Spatiotemporal changes of protophytic and protozoic Si pools within the first decade of ecosystem development seem to be mainly controlled by (biotic) small-scale environmental conditions (e.g., vegetation, food sources).}, language = {en} } @misc{WannerSeidlLampaaHoehnetal., author = {Wanner, Manfred and Seidl-Lampaa, Barbara and H{\"o}hn, Axel and Puppe, Daniel and Meisterfeld, Ralf and Sommer, Michael}, title = {Culture growth of testate amoebae under different silicon concentrations}, series = {European Journal of Protistology}, volume = {56}, journal = {European Journal of Protistology}, issn = {1618-0429}, pages = {171 -- 179}, language = {en} } @misc{PuppeHoehnKaczoreketal., author = {Puppe, Daniel and H{\"o}hn, Axel and Kaczorek, Danuta and Wanner, Manfred and Wehrhan, Marc and Sommer, Michael}, title = {How big is the influence of biogenic silicon pools on short-term changes in water-soluble silicon in soils? Implications from a study of a 10-year-old soil-plant system}, series = {Biogeosciences}, volume = {14}, journal = {Biogeosciences}, number = {22}, issn = {1726-4189}, pages = {5239 -- 5252}, language = {en} } @misc{SommerHoehnBreueretal., author = {Sommer, Michael and H{\"o}hn, Axel and Breuer, J{\"o}rn and Zagorski, Zbigniew and Busse, J. and Barkusky, Dietmar and Meier, K. and Puppe, Daniel and Wanner, Manfred and Kaczorek, Danuta}, title = {Si cycling in a forest biogeosystem - the importance of transient state biogenic Si pools}, series = {Biogeosciences}, volume = {10}, journal = {Biogeosciences}, number = {7}, issn = {1726-4189}, pages = {4991 -- 5007}, language = {en} }