TY - BOOK A1 - Riemenschneider, Dieter A1 - Sarkowsky, K. A1 - Stroh, S. A1 - Schulze-Engler, F. A1 - Matzke, C. A1 - Meier, A. A1 - Wegner, M. A1 - Stein, Mark A1 - Fischer, J. A1 - Riemenschneider, K. T1 - Postcolonial theory : the emergence of a critical discourse ; a selected and annotated bibliography T3 - ZAA Studies : language literature culture Y1 - 2004 SN - 3-86057-746-8 VL - 17 PB - Stauffenburg-Verl. CY - Tübingen ER - TY - JOUR A1 - Hermanussen, Michael A1 - Lieberman, L. S. A1 - Schönfeld Janewa, U. A1 - Scheffler, Christiane A1 - Ghosh, A. A1 - Bogin, Barry A1 - Godina, E. A1 - Kaczmarek, M. A1 - El-Shabrawi, M. A1 - Salama, E. E. A1 - Rühli, F. J. A1 - Staub, K. A1 - Woitek, U. A1 - Blaha, Pawel A1 - vanBuurren, S. A1 - Lehmann, A. A1 - Satake, T. A1 - Thodberg, H. H. A1 - Jopp, E. A1 - Kirchengast, S. A1 - Tutkuviene, J. A1 - McIntyre, M. H. A1 - Wittwer-Backofen, U. A1 - Boldsen, J. L. A1 - Martin, D. D. A1 - Meier, J. T1 - Diversity in auxology: between theory and practice Proceedings of the 18th Aschauer Soiree, 13th November 2010 Y1 - 2012 SN - 0003-5548 ER - TY - JOUR A1 - Sommer, Michael A1 - Jochheim, H. A1 - Höhn, Axel A1 - Breuer, Jörn A1 - Zagorski, Z. A1 - Busse, J. A1 - Barkusky, Dietmar A1 - Meier, K. A1 - Puppe, D. A1 - Wanner, Manfred A1 - Kaczorek, Danuta T1 - Si cycling in a forest biogeosystem - the importance of transient state biogenic Si pools JF - Biogeosciences N2 - The relevance of biological Si cycling for dissolved silica (DSi) export from terrestrial biogeosystems is still in debate. Even in systems showing a high content of weatherable minerals, like Cambisols on volcanic tuff, biogenic Si (BSi) might contribute > 50% to DSi (Gerard et al., 2008). However, the number of biogeosystem studies is rather limited for generalized conclusions. To cover one end of controlling factors on DSi, i.e., weatherable minerals content, we studied a forested site with absolute quartz dominance (> 95 %). Here we hypothesise minimal effects of chemical weathering of silicates on DSi. During a four year observation period (05/2007-04/2011), we quantified (i) internal and external Si fluxes of a temperate-humid biogeosystem (beech, 120 yr) by BIOME-BGC (version ZALF), (ii) related Si budgets, and (iii) Si pools in soil and beech, chemically as well as by SEM-EDX. For the first time two compartments of biogenic Si in soils were analysed, i.e., phytogenic and zoogenic Si pool (testate amoebae). We quantified an average Si plant uptake of 35 kg Si ha(-1) yr(-1) - most of which is recycled to the soil by litterfall - and calculated an annual biosilicification from idiosomic testate amoebae of 17 kg Si ha(-1). The comparatively high DSi concentrations (6 mg L-1) and DSi exports (12 kg Si ha(-1) yr(-1)) could not be explained by chemical weathering of feldspars or quartz dissolution. Instead, dissolution of a relictic, phytogenic Si pool seems to be the main process for the DSi observed. We identified canopy closure accompanied by a disappearance of grasses as well as the selective extraction of pine trees 30 yr ago as the most probable control for the phenomena observed. From our results we concluded the biogeosystem to be in a transient state in terms of Si cycling. Y1 - 2013 U6 - https://doi.org/10.5194/bg-10-4991-2013 SN - 1726-4170 VL - 10 IS - 7 SP - 4991 EP - 5007 PB - Copernicus CY - Göttingen ER - TY - BOOK A1 - Hilbrich, Cornelia A1 - Meier, Bernd A1 - Mette, Dieter A1 - Walter, K.-H T1 - Lehrerhandreichung für den Unterricht im Fach Arbeitslehre : Problemfeld:A, Arbeiten und Wirtschaften im Haushalt T3 - Handreichungen Y1 - 1993 VL - 1 PB - Pädagogisches Landesinstitut CY - Ludwigsfelde ER - TY - BOOK A1 - Hilbrich, Cornelia A1 - Meier, Bernd A1 - Mette, Dieter A1 - Walter, K.-H. T1 - Handreichung für den Unterricht im Fach Arbeitslehre : Problemfeld B: Wohnen und Zusammenleben im Haushalt T3 - Pädagogisches Landesinstitut Brandenburg : Handreichungen Y1 - 1993 VL - 2 PB - Pädagogisches Landesinstitut Brandenburg CY - Ludwigsfelde ER -