@article{Kaiser2021, author = {Kaiser, Michael}, title = {Spannungsfeld von Warheit und Macht}, series = {Kunsttherapeutische Stichworte}, journal = {Kunsttherapeutische Stichworte}, publisher = {fabrico}, address = {Hannover}, isbn = {978-3-946320-29-6}, pages = {210}, year = {2021}, language = {de} } @article{KaiserZedererEllerbrocketal.2016, author = {Kaiser, Michael and Zederer, Dan P. and Ellerbrock, Ruth H. and Sommer, Michael and Ludwig, Bernard}, title = {Effects of mineral characteristics on content, composition, and stability of organic matter fractions separated from seven forest topsoils of different pedogenesis}, series = {Geoderma : an international journal of soil science}, volume = {263}, journal = {Geoderma : an international journal of soil science}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0016-7061}, doi = {10.1016/j.geoderma.2015.08.029}, pages = {1 -- 7}, year = {2016}, abstract = {Mineral topsoils possess large organic carbon (OC) contents but there is only limited knowledge on the mechanisms controlling the preservation of organic matter (OM) against microbial decay. Samples were taken from the uppermost mineral topsoil horizon (0 to 5 cm) of seven sites under mature deciduous forest showing OC contents between 69 and 164 g kg(-1) and a wide range in mineral characteristics. At first, organic particles and the water-extractable OM were removed from the soil samples. Thereafter, Na-pyrophosphate extractable organic matter (OM(PY)), assumed to be indicative for OM bound via cation mediated interactions, and the OM remaining in the extraction residue (OM(ER)), supposed to be indicative for OM occluded in mechanically highly stable micro-aggregates, were sequentially separated and quantified. The composition of OM(PY) and OM(ER) was analyzed by FTIR and their stability by C-14 measurements. The OC remaining in the extraction residues accounted for 38 to 59\% of the bulk soil OC (SOC) suggesting a much larger relevance of OM(ER) for the OM dynamic in the analyzed soils as compared with OM(PY) that accounted for 1.6 to 7.5\% of the SOC. The FUR analyses revealed a lower relative proportion of C=O groups in OM(ER) compared to OM(PY) indicating differences in the degree of microbial processing between these fractions. Correlation analyses suggest an increase in the stability of OM(PY) with the soil pH and contents of Na-pyrophosphate soluble Fe, Al, and Mg and an increase in the stability of OM(ER) with the soil pH and the contents of clay and oxalate-soluble Fe and Al. Despite the detected influence of soil mineral characteristics on the turnover of OM(PY) and OM(ER), the Delta C-14 signatures indicated mean residence times less than 100 years. The presence of less stabilized OM in these fractions can be derived from methodological uncertainties and/or the fast cycling compartment of mineral-associated OM. (C) 2015 Elsevier B.V. All rights reserved.}, language = {en} } @article{KaylerKaiserGessleretal.2011, author = {Kayler, Z. E. and Kaiser, Michael and Gessler, A. and Ellerbrock, Ruth H. and Sommer, Michael}, title = {Application of delta C-13 and delta N-15 isotopic signatures of organic matter fractions sequentially separated from adjacent arable and forest soils to identify carbon stabilization mechanisms}, series = {Biogeosciences}, volume = {8}, journal = {Biogeosciences}, number = {10}, publisher = {Copernicus}, address = {G{\"o}ttingen}, issn = {1726-4170}, doi = {10.5194/bg-8-2895-2011}, pages = {2895 -- 2906}, year = {2011}, abstract = {Identifying the chemical mechanisms behind soil carbon bound in organo-mineral complexes is necessary to determine the degree to which soil organic carbon is stabilized belowground. Analysis of delta C-13 and delta N-15 isotopic signatures of stabilized OM fractions along with soil mineral characteristics may yield important information about OM-mineral associations and their processing history. We anlayzed the delta C-13 and delta N-15 isotopic signatures from two organic matter (OM) fractions along with soil mineral proxies to identify the likely binding mechanisms involved. We analyzed OM fractions hypothesized to contain carbon stabilized through organo-mineral complexes: (1) OM separated chemically with sodium pyrophosphate (OM(PY)) and (2) OM occluded in micro-structures found in the chemical extraction residue (OM(ER)). Because the OM fractions were separated from five different soils with paired forest and arable land use histories, we could address the impact of land use change on carbon binding and processing mechanisms. We used partial least squares regression to analyze patterns in the isotopic signature of OM with established mineral and chemical proxies indicative for certain binding mechanisms. We found different mechanisms predominate in each land use type. For arable soils, the formation of OM(PY)-Ca-mineral associations was identified as an important OM binding mechanism. Therefore, we hypothesize an increased stabilization of microbial processed OM(PY) through Ca2+ interactions. In general, we found the forest soils to contain on average 10\% more stabilized carbon relative to total carbon stocks, than the agricultural counter part. In forest soils, we found a positive relationship between isotopic signatures of OM(PY) and the ratio of soil organic carbon content to soil surface area (SOC/SSA). This indicates that the OM(PY) fractions of forest soils represent layers of slower exchange not directly attached to mineral surfaces. From the isotopic composition of the OM(ER) fraction, we conclude that the OM in this fraction from both land use types have undergone a different pathway to stabilization that does not involve microbial processing, which may include OM which is highly protected within soil micro-structures.}, language = {en} } @article{KaiserWalterEllerbrocketal.2011, author = {Kaiser, Michael and Walter, K. and Ellerbrock, Ruth H. and Sommer, Michael}, title = {Effects of land use and mineral characteristics on the organic carbon content, and the amount and composition of Na-pyrophosphate-soluble organic matter, in subsurface soils}, series = {European journal of soil science}, volume = {62}, journal = {European journal of soil science}, number = {2}, publisher = {Wiley-Blackwell}, address = {Malden}, issn = {1351-0754}, doi = {10.1111/j.1365-2389.2010.01340.x}, pages = {226 -- 236}, year = {2011}, abstract = {Land use and mineral characteristics affect the ability of surface as well as subsurface soils to sequester organic carbon and their contribution to mitigation of the greenhouse effect. There is less information about the effects of land use and soil properties on the amount and composition of organic matter (OM) for subsurface soils as compared with surface soils. Here we aimed to analyse the long-term (>= 100 years) impact of arable and forest land use and soil mineral characteristics on subsurface soil organic carbon (SOC) contents, as well as on amount and composition of OM sequentially separated by Na pyrophosphate solution (OM(PY)) from subsurface soil samples. Seven soils with different mineral characteristics (Albic and Haplic Luvisol, Colluvic and Haplic Regosol, Haplic and Vertic Cambisol, Haplic Stagnosol) were selected from within Germany. Soil samples were taken from subsurface horizons of forest and adjacent arable sites continuously used for > 100 years. The OM(PY) fractions were analysed for their OC content (OC(PY)) and characterized by Fourier transform infrared spectroscopy. Multiple regression analyses for the arable subsurface soils indicated significant positive relationships between the SOC contents and combined effects of the (i) exchangeable Ca (Ca(ex)) and oxalate-soluble Fe (Fe(ox)) and (ii) the Ca(ex) and Al(ox) contents. For these soils the increase in OC (OC(PY) multiplied by the relative C=O content of OM(PY)) and increasing contents of Ca(ex) indicated that OM(PY) mainly interacts with Ca2+. For the forest subsurface soils (pH < 5), the OC(PY) contents were related to the contents of Na-pyrophosphate-soluble Fe and Al. The long-term arable and forest land use seems to result in different OM(PY)-mineral interactions in subsurface soils. On the basis of this, we hypothesize that a long-term land-use change from arable to forest may lead to a shift from mainly OM(PY)-Ca2+ to mainly OM(PY)-Fe3+ and -Al3+ interactions if the pH of subsurface soils significantly decreases to < 5.}, language = {en} } @article{KaiserBerheSommeretal.2012, author = {Kaiser, Michael and Berhe, Asmeret Asefaw and Sommer, Michael and Kleber, Markus}, title = {Application of ultrasound to disperse soil aggregates of high mechanical stability}, series = {Journal of plant nutrition and soil science = Zeitschrift f{\"u}r Pflanzenern{\"a}hrung und Bodenkunde}, volume = {175}, journal = {Journal of plant nutrition and soil science = Zeitschrift f{\"u}r Pflanzenern{\"a}hrung und Bodenkunde}, number = {4}, publisher = {Wiley-VCH}, address = {Weinheim}, issn = {1436-8730}, doi = {10.1002/jpln.201200077}, pages = {521 -- 526}, year = {2012}, abstract = {Questions remain about the exact ultrasonic energy level that is required to effectively disperse soil aggregates and to what extent this is accompanied by physical damage to individual soil particles. We found maximum aggregate dispersion at energy levels of 1500 J?cm3 and no evidence for the disintegration of particles < 20 mu m even at that energy level. Our findings suggest that sonication at energies much greater than those applied conventionally can disperse aggregates of high mechanical stability.}, language = {en} } @article{KaiserEllerbrockSommer2009, author = {Kaiser, Michael and Ellerbrock, Ruth H. and Sommer, Michael}, title = {Separation of coarse organic particles from bulk surface soil samples by electrostatic attraction}, issn = {0361-5995}, doi = {10.2136/sssaj2009.0046}, year = {2009}, abstract = {Different separation procedures are suggested for studying the stability and functionality of sod organic matter (OM). Density fractionation procedures using high-molarity, water-based salt solutions to separate organic particles may cause losses or transfers of C between particle and soluble OM fractions during separation, which may be a result of solution processes. The objective of this study was to separate coarse organic particles (>0.315 mm) from air- dried surface soil samples to avoid such solution processes as far as possible. Air-dried surface soil samples (<2 mm) from nine adjacent arable and forest sites were sieved into five soil particle size fractions (2-1.25, 1.25-0.8, 0.8- 0.5, 0.5-0.4, and 0.4-0.315 mm). Coarse organic particles were separated from each of these fractions using electrostatic attraction by a charged glass surface. The sum of the total dry matter content of the electrostatically separated coarse organic particles ranged from 0.05 to 140 g kg(-1). Scanning electron microscopy images and organic C (OC) analyses indicated, however, that the coarse organic particle fractions were also composed of 20 to 76\% mineral particles (i.e., 200-760 g mineral kg(-1) fraction). The repeatability of the electrostatic attraction procedure falls within a range similar to that of accepted density fractionation methods using high-molarity salt solutions. Based on the similarity in repeatability, we suggest that the electrostatic attraction procedure will successfully remove coarse organic particles (>0.315 mm) from air-dried surface soil samples. Because aqueous solutions are not used, the electrostatic attraction procedure to separate coarse organic particles avoids C losses and transfers associated with solution-dependent techniques. Therefore, this method can be used as a pretreatment for subsequent density- or solubility-based soil OM fractionation procedures.}, language = {en} } @misc{KaeserPlassmannBuschetal.1999, author = {K{\"a}ser, Beate and Plassmann, Max and Busch, Michael and Carl, Horst and Rink, Martin and Kaiser, Michael and Jessen, Olaf}, title = {Milit{\"a}r und Gesellschaft in der Fr{\"u}hen Neuzeit : Bulletin}, volume = {3}, number = {3}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-33401}, year = {1999}, abstract = {- Milit{\"a}r \& l{\"a}ndliche Gesellschaft in der FNZ Kolloquium in Rostock (Programm) - Tagung der AG- FNZ, Essen (16.-18. September 1999) - Ver{\"o}ffentlichungen der AMG in der preußischen Armee(B. K{\"a}ser) - „Vom Untertan zum Staatsb{\"u}rger..." (M. Plassmann) - Informationen zum Museum in Wittstock - Absolutistischer Staat und Heeresordnung. (Dr. M. Busch - „Kriegserfahrung und Religion ...1792-1815" (PD Dr. H. Carl) - „Vom Partheyg{\"a}nger" zum Partisann (M. Rink) - „Cuius exercitus, eius religio?" (Dr. M. Kaiser) - „Mars mit Zopf? Aufstieg und Fall des Ernst v. R{\"u}chel" (1754-1823) (O. Jessen) - AMG-Sitzung auf dem Historikertag in Frankfurt a. M. - Beitrittserkl{\"a}rung}, language = {de} } @article{KaiserKroll2001, author = {Kaiser, Michael and Kroll, Stefan}, title = {Forschungsprojekt Milit{\"a}r und Religiosit{\"a}t in der Fr{\"u}hen Neuzeit}, series = {Milit{\"a}r und Gesellschaft in der fr{\"u}hen Neuzeit}, volume = {5}, journal = {Milit{\"a}r und Gesellschaft in der fr{\"u}hen Neuzeit}, number = {2}, issn = {1861-910X}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-28746}, pages = {158 -- 164}, year = {2001}, abstract = {Inhalt: Milit{\"a}r und Religiosit{\"a}t in der Fr{\"u}hen Neuzeit (Projektskizze) Einf{\"u}hrende Literaturhinweise zum Themenkomplex Milit{\"a}r und Religiosit{\"a}t in der Fr{\"u}hen Neuzeit}, language = {de} } @misc{WilsonHuhtamiesHucketal.2001, author = {Wilson, Peter and Huhtamies, Mikko and Huck, Stephan and Gahlen, Gundula and Herrmann, Michael and Reimer, Torsten F. and Winnige, Norbert and P{\"o}hlmann, Markus and Pauser, Josef and Fuchs, Antje and M{\"o}bius, Sascha and Heil, Wolfgang and Jacobs, Rainer and Kaiser, Michael and Kroll, Stefan and Blank, Ralf and Gr{\"u}ndel, Olaf and Schl{\"u}rmann, Jan and Geffarth, Renko and Bavendamm, Gundula}, title = {Milit{\"a}r und Gesellschaft in der Fr{\"u}hen Neuzeit}, volume = {5}, number = {2}, organization = {Arbeitskreis Milit{\"a}r und Gesellschaft in der Fr{\"u}hen Neuzeit e.V. (Hrsg.)}, issn = {1617-9722}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-28126}, year = {2001}, abstract = {Aus dem Inhalt dieser Ausgabe: BEITR{\"A}GE: Peter H. Wilson: British and american perspectives on early modern warfare Mikko Huhtamies: Kriegswesen und Gesellschaft in der fr{\"u}hen Neuzeit in der finnisch-schwedischen Geschichtsforschung INTERNET: Stephan Huck: Nutzungsm{\"o}glichkeiten des Internets Gundula Gahlen , Michael Herrmann, Torsten F. Reimer und Norbert Winnige: Milit{\"a}rgeschichte der Fr{\"u}hen Neuzeit im Internet Die Online-Angebote des AMG und sfn Markus P{\"o}hlmann: Die Internetpr{\"a}senz des Arbeitskreises Milit{\"a}rgeschichte e.V. Josef Pauser: Das Online-Angebot des Arbeitskreises .Policey/Polizei im vormodernen Europa. Torsten F. Reimer: Eine Studie in Kriegf{\"u}hrung. Eine Vorstellung des H-War Military History Network PROJEKTE: Antje Fuchs: Ein neuer Konfessionskrieg? Erfahrungen von Krieg und Okkupation im Kurf{\"u}rstentum Hannover und benachbarten geistlichen F{\"u}rstent{\"u}mern zur Zeit des Siebenj{\"a}hrigen Krieges 1756-1763 Sascha M{\"o}bius: Ergebnisse der Magisterarbeit .Psychologische Aspekte friederizianischer Taktik im Siebenj{\"a}hrigen Krieg. Wolfgang Heil: Die Gemeinen Soldaten. Das Sozialleben der milit{\"a}rischen Unterschicht im altpreußischen Heer und seine Stellung in der altst{\"a}ndischen Gesellschaft. Rainer Jacobs: Milit{\"a}rische Dienstpflichten in der Fr{\"u}hen Neuzeit Michael Kaiser und Stefan Kroll: Forschungsprojekt Milit{\"a}r und Religiosit{\"a}t in der Fr{\"u}hen Neuzeit Ralf Blank: Die Schlosskanonen von Hohenlimburg Artilleriegesch{\"u}tze mit einer wechselvollen Geschichte Gundula Gahlen und Olaf Gr{\"u}ndel: Kataster zur Schlacht bei Wittstock von 1636 Jan Schl{\"u}rmann: Die Schleswig-Holstein-Gottorfischen Auxiliairtruppen im Spanischen Erbfolgekrieg . Ergebnisse einer Untersuchung BERICHTE: Renko Geffarth: Die besetzte res publica. Zum Verh{\"a}ltnis von ziviler Obrigkeit und milit{\"a}rischer Herrschaft in besetzten Gebieten vom Sp{\"a}tmittelalter bis zum 18. Jahrhundert. Gundula Bavendamm: Operationsgeschichte und moderne Historiographie. Ein Widerspruch?}, subject = {Milit{\"a}r / Geschichte}, language = {de} } @phdthesis{Kaiser2004, author = {Kaiser, Michael}, title = {Einfluss von Bewirtschaftungsmaßnahmen auf Menge und Zusammensetzung unterschiedlich stabiler Fraktionen der organischen Bodensubstanz}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-0001886}, school = {Universit{\"a}t Potsdam}, year = {2004}, abstract = {Ziel dieser Arbeit ist es, ein sequentielles Extraktionsverfahren zur Erfassung unterschiedlich stabiler Anteile der orgnischen Bodensubstanz (OBS) zu entwickeln und zu kl{\"a}ren, ob ein Zusammenhang zwischen L{\"o}slichkeit und Stabilit{\"a}t besteht. Dar{\"u}ber hinaus sollen der Einfluss von Bewirtschaftungsmaßnahmen auf Menge und Zusammensetzung dieser OBS-Anteile und Zusammenh{\"a}nge zwischen Fourier Transform Infrarot (FT-IR)-Spektroskopiedaten und der Kationenaustauschkapazit{\"a}t (KAK) der OBS analysiert werden. F{\"u}r die Untersuchungen wurden B{\"o}den der Langzeitfeldexperimente (LFE) in Halle, Bad Lauchst{\"a}dt und Rotthalm{\"u}nster beprobt. Zur Erfassung unterschiedlicher OBS-Fraktionen wurden im ersten Schritt die wasserl{\"o}slichen OBS-Anteile (OBS(W)-Fraktion) aus den B{\"o}den isoliert. Im zweiten Schritt wurden aus den Extraktionsr{\"u}ckst{\"a}nden der Wasserextraktion OBS-Anteile mit einer Natrium (Na)-Pyrophosphatl{\"o}sung extrahiert (OBS(PY)-Fraktion). Die Stabilit{\"a}t der OBS-Fraktionen wurde anhand von \&\#948;13C-Bestimmungen und 14C-Messungen untersucht. Die Charakterisierung der Zusammensetzung der OBS-Fraktionen erfolgte mittels FT-IR Spektroskopie. Generell wird mit der OBS(PY)-Fraktion ein gr{\"o}ßerer Anteil am organischen Kohlenstoffgehalt der B{\"o}den erfasst als mit der OBS(W)-Fraktion. Die \&\#948;13C- und 14C-Daten zeigen, dass die OBS(W)-Fraktion h{\"o}here Anteile jungen organischen Materials als die OBS(PY)-Fraktion enth{\"a}lt. Das entwickelte sequentielle Extraktionsverfahren ist also prinzipiell geeignet unterschiedlich stabile OBS-Anteile anhand ihrer L{\"o}slichkeit zu isolieren. Mittels FT-IR spektroskopischer Untersuchungen wird festgestellt, dass Bewirtschaftungsmaßnahmen, wie die D{\"u}ngung, sowie Standorteigenschaften die Zusammensetzung der OBS-Fraktionen beeinflussen. F{\"u}r die OBS(PY)-Fraktion ist dies st{\"a}rker ausgepr{\"a}gt als f{\"u}r die OBS(W)-Fraktion. Die KAK der OBS(PY)-Fraktion aus den B{\"o}den der LFE in Halle und Bad Lauchst{\"a}dt ist positiv mit der Absorptionsintensit{\"a}t der C=O-Bande in den FT-IR Spektren dieser OBS-Fraktion korreliert.}, language = {de} }