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  • 1
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    Fractionation of Metal Stable Isotopes by Higher Plants (2009)
    In:  Elements
    Details
    Publication Date: 2020-02-12
    Description: Higher plants induce chemical reactions in the rhizosphere, facilitating metal uptake by roots. Fractionation of the isotopes in nutrients such as calcium, iron, magnesium, and zinc produces a stable isotope composition in the plants that generally differs from that of the growth medium. Isotope fractionation also occurs during transport of the metals within most plants, but its extent depends on plant species and on the metal, in particular, on the metal’s redox state and what ligand it is bound to. The metal stable isotope variations observed in plants create an isotope signature of life at the Earth’s surface, contributing substantially to our understanding of metal cycling processes in the environment and in individual organisms.
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/article
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  • 2
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    Der Rostbefall des Weizens im Jahre 1925 (1925)
    In:  Deutsche Landwirtschaftliche Presse, Jahrgang 52, Nr. 38, p. 450
    Details
    Publication Date: 1925
    Description: Allgemeine Beobachtungen zum Rostbefall von Weizen im Jahr 1925 trotz langer Trockenperioden KATASTER-BESCHREIBUNG: Einfluss des Niederschlags auf die Infektion; auch kurze starke Niederschläge zwischen langen Trockenperioden sind ausreichend um einen großflächigen Befall zu bewirken. KATASTER-DETAIL: Delta Nied +, dann Infektion +;
    Keywords: Deutschland ; 1925 ; Anbautermine ; Niederschlag ; Pflanzenkrankheit ; Trockenheit ; Weizen
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    BIBLIOGRAPHY INKA BB
  • 3
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    Julii Bernhards von Rohr Einleitung Zu der allgemeinen Land- und Feld-Wirthschaffts-Kunst Derer Teutschen : Darinnen die allgemeinen Regeln und Anmerckungen, die so wohl bey der Land- und Feld-Oeconomie überhaupt, Als insonderheit Bey dem Ackerbau, der Viehzucht, Gärtnerey, Wein-Bau, Bierbrauen, Wäldern, Jägereyen, Teichen und Fischereyen fast in allen Provinzien Teutschlandes in acht zu nehmen ; Jn einer guten Ordnung, ohne Einmischung unnöthiger Sachen, vorgetragen worden. (1720)
    In:  Leipzig : Martini online:Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2012
    Details
    Publication Date: 1720
    Description: Werk über Land- und Fortstwirtschaft KATASTER-BESCHREIBUNG: KATASTER-DETAIL:
    Keywords: Deutschland ; 18. Jahrhundert ; Landwirtschaft ; Waldwachstum
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  • 4
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    Potential effects of global warming on oilseed rape pathogens in Northern Germany (2012)
    In:  Fungal Ecology 5 :6 2-7 2
    Details
    Publication Date: 2012
    Description: Übersicht über bisherige, dokumentiere Zusammenhänge einer Klimaänderung und pilzliche Krankheiten in Raps, Abschätzungen über das Auftreten von Verticillium longisporum, Sclerotinia sclerotiorum, Alternaria brassicae und Phoma lingam an Raps in der Zukunft KATASTER-BESCHREIBUNG: Projektionen über das Auftreten von pilzlichen Pathogenen in Raps, Basiszeitraum 1971-2000, Szenario A1B, REMO, 2001-2030 und 2071-2100, Zusammenhang zwischen Grad-Tagen(〉0°C), Pflanzenentwicklung und Krankheitsparametern als Regressionsfunktionen im Artikel, jedoch sind feiner aufgelöste Projektion von RCM als Tageswerte erforderlich, um Wachstumszyklen zu simulieren und genauere Aussagen zu erhalten KATASTER-DETAIL: Delta T +, dann Zunahme von Verticillium longisporum, Sclerotinia sclerotiorum, Alternaria brassicae und Phoma lingam an Raps, Signal verstärkt im Szenarienzeitraum 2071-2100, Abnahme von Pyrenopeziza brassicae
    Keywords: Deutschland ; Sachsen, Niedersachsen, Norddeutschland ; 1971-2000 ; Szenarien ; Infektionskrankheiten ; Temperatur ; Raps
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  • 5
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    Die Dialektik der Globalisierung (2021)
    KIT Scientific Publishing
    Details
    Publication Date: 2024-04-04
    Description: not yet available
    Description: Die Arbeit beschäftigt sich mit den soziologischen Herausforderungen der Globalisierung und ihrem Einfluss auf die Sozialwissenschaften. Dabei wird vor allem nach den Parametern des Raums und der Identität im Prozess der Globalisierung gefragt. Innerhalb eines deutschen Kontextes wird untersucht, wodurch Migrationsprozesse konstituiert sind, welche Probleme und Orientierungsunsicherheiten sie nach sich ziehen können und wie mit kultureller Differenz umgegangen wird. Es werden zudem Vorschläge zu möglichen Veränderungsprozessen in der Kulturpolitik und Kulturarbeit gemacht.
    Keywords: cultural studies ; globalization ; globalisierung ; kulturwissenschaft ; migration ; kulturpolitik ; Deutschland ; Identität ; thema EDItEUR::N History and Archaeology::NH History::NHT History: specific events and topics::NHTB Social and cultural history ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GT Interdisciplinary studies::GTQ Globalization ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPA Political science and theory
    Language: German
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    E-BOOK
  • 6
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    The denudation of the Central Alps from cosmogenic nuclides in river sediment (2006)
    In:  Berichte der Deutschen Mineralogischen Gesellschaft : Beihefte zum European Journal of Mineralogy ; 18, 1
    Details
    Publication Date: 2020-02-12
    Description: Numerous factors control the topographic evolution of mountain belts. Crustal thickening, rock uplift rate, and denudational forcing doubtlessly interact, but the feedback mechanisms amongst these are disputed, because they operate over entirely different time scales. Cosmogenically-derived denudation rates cover time-scales of 10(3) to 10(5) years, providing a denudational tool that allows us to shed light on interactions between long-term topography-forming processes and short-term factors destroying topography. Prerequisites for the application of this method in presently uplifting and fast-eroding mountain belts like the Central Alps are an investigation of appropriate watershed sizes for systematic sampling. Denudation rates in Maggia tributaries of various sizes reveal that the trunk stream yields statistically the same denudation rate (0.85 ± 0.14 mm/yr) as the tributaries (0.74 ± 0.14 mm/yr). Therefore, sampling of large watersheds is a feasible approach. Denudation rates of watersheds from the Central Alps are amongst the highest ever measured in similar complex settings, ranging in mean from 0.27 ± 0.05 mm/yr for the Alpine foreland to 1.42 ± 0.4 mm/yr for the high crystalline Central Alps. The measured cosmogenic denudation rates are in good agreement with post-LGM lake infill rates; they are significantly higher than recent denudation rates from river loads. We attribute this discrepancy to differences in methodology and integration time scale. We will show that denudation is high in areas of high altitude and high relief. Furthermore, our data shows that denudation rates are low in areas of low rock uplift, and are high in areas of high rock uplift, respectively. It appears that rock uplift and denudation are intimately linked. It follows that either crustal thickening is generating rock uplift; the mountain belt reacts with erosional unloading. Alternatively, high precipitation and glaciers, most pronounced at high altitude, result in high denudation rates at these sites. Topography then would respond by increasing rock uplift.
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/conferenceObject
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  • 7
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    Soils as pacemakers and limiters of global silicate weathering (2012)
    In:  Comptes Rendus Geoscience
    Details
    Publication Date: 2020-02-12
    Description: The weathering and erosion processes that produce and destroy regolith are widely recognized to be positively correlated across diverse landscapes. However, conceptual and numerical models predict some limits to this relationship that remain largely untested. Using new global data compilations of soil production and weathering rates from cosmogenic nuclides and silicate weathering fluxes from global rivers, we show that the weathering-erosion relationship is capped by certain ‘speed limits’. We estimate a soil production speed limit of between 320 to 450 t km−2 yr−1 and the associated weathering rate speed limit of roughly 150 t km−2 yr−1. These limits appear to be valid for a range of lithologies, and also extend to mountain belts, where soil cover is not continuous and erosion rates outpace soil production. We argue that the presence of soil and regolith is a requirement for high weathering fluxes from a landscape, and that rapidly eroding, active mountain belts are not the most efficient sites for weathering.
    Keywords: 550 - Earth sciences
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  • 8
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    In situ HPHT studies on Li3B2N3 and its relevance for the hBN-cBN transformation mechanism (2000)
    In:  Jahresbericht / Hamburger Synchrotronstrahlungslabor HASYLAB am Deutschen Elektronen-Synchrotron DESY = Annual report
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    Publication Date: 2020-02-12
    Keywords: 550 - Earth sciences
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  • 9
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    Determining the stable Fe isotope signature of plant-available iron in soils (2010)
    In:  Chemical Geology
    Details
    Publication Date: 2020-02-12
    Description: The isotope composition of iron in soils bears a signature of the environmental conditions that formed this soil. But plants extract only the mobile iron from soil, which is a small fraction of the soils total iron. Yet this fraction is notoriously difficult to extract experimentally. Here we provide evidence that this signature is provided readily in the form of strategy II plants (grasses). To this end we determined the stable Fe isotope signature of iron pools in two agronomic soils with two different sequential extraction methods. The Fe isotopic composition of the following soil mineral pools was resolved: exchangeable iron, iron of poorly-crystalline (oxyhydr)oxides, iron in organic matter, iron of crystalline oxides and silicate bound iron. We found variations of about 1 per mil in δ56Fe (δ56Fe/[‰] = [(56/54Fesample/56/54FeIRMM-014) -1] • 103) in the iron isotopic composition between the different soil mineral pools. The pools that are identified to contribute most to plant nutrition are water-extractable- and exchangeable iron, iron in organic matter and iron of poorly-crystalline (oxyhydr)oxides. These fractions are about 0.3 per mil lighter than the bulk soils. Silicates in our soils have a δ56Fe of up to 0.4 ‰, suggesting preferential loss of light iron during weathering. We compared the isotope composition of the plant-available Fe to that of typical strategy I and strategy II plants, grown on the soils. While redox and other transformation processes in the rhizosphere enrich strategy I plants to varying degrees in light iron isotopes, strategy II plants exhibit a uniform Fe isotopic composition and are only slightly enriched in the heavier iron isotopes by about 0.3 ‰. Therefore these plants may record the Fe isotope composition of plant-available iron in soils, to which the composition of strategy I plants can be compared to. Keywords: Fe isotopes, higher plants, MC-ICP-MS, isotope fractionation, soils
    Keywords: 550 - Earth sciences
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  • 10
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    Globale Klimaänderungen in der Erdgeschichte: Geowissenschaftliche Ursachen und Auswirkungen (2001)
    In:  Klimaweißbuch | Terra nostra ; 2001/7
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    Publication Date: 2020-02-12
    Keywords: 550 - Earth sciences
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