TY - JOUR A1 - Gall, Andrea A1 - Uebel, Udo A1 - Ebensen, Uwe A1 - Hillebrand, Helmut A1 - Meier, Sandra A1 - Singer, Gabriel A1 - Wacker, Alexander A1 - Striebel, Maren T1 - Planktotrons BT - a novel indoor mesocosm facility for aquatic biodiversity and food web research JF - Limnology and oceanography-methods N2 - We established a new indoor mesocosm facility, 12 fully controlled Planktotrons, designed to conduct marine and freshwater experiments for biodiversity and food web approaches using natural or artificial, benthic or planktonic communities. The Planktotrons are a unique and custom-tailored facility allowing long-term experiments. Wall growth can be inhibited by a rotating gate paddle with silicone lips. Additionally, temperature and light intensity are individually controllable for each Planktotron and the large volume (600 L) enables high-frequency or volume-intense measurements. In a pilot freshwater experiment various trophic levels of a pelagic food web were maintained for up to 90 d. First, an artificially assembled phytoplankton community of 11 species was inoculated in all Planktotrons. After 22 d, two ciliates were added to all, and three Daphnia species were added to six Planktotrons. After 72 d, dissolved organic matter (DOM, an alkaline soil extract) was added as an external disturbance to six of the 12 Planktotrons, involving three Planktotrons stocked with Daphnia and three without, respectively. We demonstrate the suitability of the Planktotrons for food web and biodiversity research. Variation among replicated Planktotrons (n=3 minimum) did not differ from other laboratory systems and field experiments. We investigated population dynamics and interactions among the different trophic levels, and found them affected by the sequence of ciliate and Daphnia addition and the disturbance caused by addition of DOM. Y1 - 2017 U6 - https://doi.org/10.1002/lom3.10196 SN - 1541-5856 VL - 15 SP - 663 EP - 677 PB - Wiley CY - Hoboken ER - TY - JOUR A1 - Bütow, Heike A1 - Bütow, Martin A1 - Garten, Gerd A1 - Markert, Wolfgang A1 - Meier, Uwe A1 - Meißgeier, Jürgen ED - Jahn, Gert T1 - Seydlitz Erdkunde 4 : Gymnasium Y1 - 1995 PB - Schroedel CY - Hannover ER - TY - JOUR A1 - Bütow, Heike A1 - Bütow, Martin A1 - Felber, Elke A1 - Garten, Gerd A1 - Meier, Uwe A1 - Meißgeier, Jürgen A1 - Oelschlägel, Frank ED - Jahn, Gert T1 - Seydlitz Erdkunde : Kl. 10-12, Lehrerband, Sachsen Y1 - 1995 PB - Schroedel CY - Hannover ER - TY - BOOK A1 - Bütow, Heike A1 - Bütow, Martin A1 - Garten, Gerd A1 - Markert, Wolfgang A1 - Meier, Uwe A1 - Meißgeier, Jürgen ED - Jahn, Gert T1 - Seydlitz Erdkunde 4 : Lehrerband Y1 - 1996 PB - Schroedel CY - Hannover ER - TY - JOUR A1 - Bütow, Heike A1 - Bütow, Martin A1 - Garten, Gerd A1 - Markert, Wolfgang A1 - Meier, Uwe A1 - Meißgeier, Jürgen ED - Jahn, Gert T1 - Seydlitz Erdkunde 4 : Ausgabe E Y1 - 1995 PB - Schroedel CY - Hannover ER - TY - JOUR A1 - Bütow, Heike A1 - Bütow, Martin A1 - Garten, Gerd A1 - Markert, Wolfgang A1 - Meier, Uwe A1 - Meißgeier, Jürgen ED - Jahn, Gert T1 - Seydlitz Erdkunde 4 : Ausgabe E Y1 - 1996 PB - Schroedel CY - Hannover ER - TY - JOUR A1 - Bricks, Wolfgang A1 - Bütow, Heike A1 - Bütow, Martin A1 - Garten, Gerd A1 - Markert, Wolfgang A1 - Meier, Uwe A1 - Meißgeier, Jürgen ED - Jahn, Gert T1 - Seydlitz Erdkunde 4 : Ausgabe Thüringen Y1 - 1995 PB - Schroedel CY - Hannover ER - TY - JOUR A1 - Bütow, Heike A1 - Bütow, Martin A1 - Garten, Gerd A1 - Meier, Uwe A1 - Meißgeier, Jürgen ED - Jahn, Gert T1 - Seydlitz Erdkunde 4 : Gymnasium Sachsen Y1 - 1995 PB - Schroedel CY - Hannover ER - TY - BOOK A1 - Bauer, Jürgen A1 - Englert, Wolfgang A1 - Garten, Gerd A1 - Mack, Wolfgang A1 - Meier, Uwe A1 - Morgeneyer, Frank T1 - Seydlitz Geographie 10 : Schülerbd., Sekundarstufe 2, Gymansium Y1 - 1997 SN - 3-507-52510-0 PB - Schroedel CY - Hannover ER - TY - JOUR A1 - Meier, Patrick A1 - Kriegel, Hendrik A1 - Motschmann, Uwe A1 - Schmidt, Jürgen A1 - Spahn, Frank A1 - Hill, Thomas W. A1 - Dong, Yaxue A1 - Jones, Geraint H. T1 - A model of the spatial and size distribution of Enceladus' dust plume JF - Planetary and space science KW - Enceladus KW - Plume KW - Nanograins KW - Cassini KW - Tail Y1 - 2014 U6 - https://doi.org/10.1016/j.pss.2014.09.016 SN - 0032-0633 VL - 104 SP - 216 EP - 233 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Meier, Patrick A1 - Motschmann, Uwe A1 - Schmidt, Jurgen A1 - Spahn, Frank A1 - Hill, Thomas W. A1 - Dong, Yaxue A1 - Jones, Geraint H. A1 - Kriegel, Hendrik T1 - Modeling the total dust production of Enceladus from stochastic charge equilibrium and simulations JF - Planetary and space science KW - Enceladus KW - Plume KW - Nanograin charge KW - CAPS Y1 - 2015 U6 - https://doi.org/10.1016/j.pss.2015.10.002 SN - 0032-0633 VL - 119 SP - 208 EP - 221 PB - Elsevier CY - Oxford ER - TY - JOUR A1 - Kind, Lucy A1 - Plamper, Felix A. A1 - Goebel, Ronald A1 - Mantion, Alexandre A1 - Mueller, Axel H. E. A1 - Pieles, Uwe A1 - Taubert, Andreas A1 - Meier, Wolfgang P. T1 - Silsesquioxane/polyamine nanoparticle-templated formation of star- or raspberry-like silica nanoparticles N2 - Silica is an important mineral in biology and technology, and many protocols have been developed for the synthesis of complex silica architectures. The current report shows that silsesquioxane nanoparticles carrying polymer arms on their surface are efficient templates for the fabrication of silica particles with a star- or raspberry-like morphology. The shape of the resulting particles depends on the chemistry of the polymer arms. With poly(N,N- dimethylaminoethyl methacrylate) (PDMAEMA) arms, spherical particles with a less electron dense core form. With poly {[2- (methacryloyloxy)ethyl] trimethylammonium iodide} (PMETAI), star- or raspberry-like particles form. Electron microscopy, electron tomography, and small-angle X-ray scattering show that the resulting silica particles have a complex structure, where a silsequioxane nanoparticle carrying the polymer arms is in the center. Next is a region that is polymer-rich. The outermost region of the particle is a silica layer, where the outer parts of the polymer arms are embedded. Time- resolved zeta-potential and pH measurements, dynamic light scattering, and electron microscopy reveal that silica formation proceeds differently if PDMAEMA is exchanged for PMETAI. Y1 - 2009 UR - http://pubs.acs.org/journal/langd5 U6 - https://doi.org/10.1021/La900229n SN - 0743-7463 ER -