ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    facet.materialart.
    Unbekannt
    Atmospheric oxidation capacity sustained by a tropical forest (2008)
    Nature Publishing Group (NPG)
    Details
    Publikationsdatum: 2008-04-11
    Beschreibung: Terrestrial vegetation, especially tropical rain forest, releases vast quantities of volatile organic compounds (VOCs) to the atmosphere, which are removed by oxidation reactions and deposition of reaction products. The oxidation is mainly initiated by hydroxyl radicals (OH), primarily formed through the photodissociation of ozone. Previously it was thought that, in unpolluted air, biogenic VOCs deplete OH and reduce the atmospheric oxidation capacity. Conversely, in polluted air VOC oxidation leads to noxious oxidant build-up by the catalytic action of nitrogen oxides (NO(x) = NO + NO2). Here we report aircraft measurements of atmospheric trace gases performed over the pristine Amazon forest. Our data reveal unexpectedly high OH concentrations. We propose that natural VOC oxidation, notably of isoprene, recycles OH efficiently in low-NO(x) air through reactions of organic peroxy radicals. Computations with an atmospheric chemistry model and the results of laboratory experiments suggest that an OH recycling efficiency of 40-80 per cent in isoprene oxidation may be able to explain the high OH levels we observed in the field. Although further laboratory studies are necessary to explore the chemical mechanism responsible for OH recycling in more detail, our results demonstrate that the biosphere maintains a remarkable balance with the atmospheric environment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lelieveld, J -- Butler, T M -- Crowley, J N -- Dillon, T J -- Fischer, H -- Ganzeveld, L -- Harder, H -- Lawrence, M G -- Martinez, M -- Taraborrelli, D -- Williams, J -- England -- Nature. 2008 Apr 10;452(7188):737-40. doi: 10.1038/nature06870.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute for Chemistry, 27 Becherweg, 55128 Mainz, Germany. lelieveld@mpch-mainz.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18401407" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Atlantic Ocean ; Atmosphere/*chemistry ; Butadienes/metabolism ; French Guiana ; Guyana ; Hemiterpenes/metabolism ; Hydroxyl Radical/metabolism ; Nitric Oxide/metabolism ; Oxidation-Reduction ; Ozone/analysis ; Pentanes/metabolism ; Suriname ; Trees/*metabolism ; *Tropical Climate
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von Nature Publishing Group (NPG)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 2
    facet.materialart.
    Unbekannt
    Reversed flow of Atlantic deep water during the Last Glacial Maximum (2010)
    Nature Publishing Group (NPG)
    Details
    Publikationsdatum: 2010-11-05
    Beschreibung: The meridional overturning circulation (MOC) of the Atlantic Ocean is considered to be one of the most important components of the climate system. This is because its warm surface currents, such as the Gulf Stream, redistribute huge amounts of energy from tropical to high latitudes and influence regional weather and climate patterns, whereas its lower limb ventilates the deep ocean and affects the storage of carbon in the abyss, away from the atmosphere. Despite its significance for future climate, the operation of the MOC under contrasting climates of the past remains controversial. Nutrient-based proxies and recent model simulations indicate that during the Last Glacial Maximum the convective activity in the North Atlantic Ocean was much weaker than at present. In contrast, rate-sensitive radiogenic (231)Pa/(230)Th isotope ratios from the North Atlantic have been interpreted to indicate only minor changes in MOC strength. Here we show that the basin-scale abyssal circulation of the Atlantic Ocean was probably reversed during the Last Glacial Maximum and was dominated by northward water flow from the Southern Ocean. These conclusions are based on new high-resolution data from the South Atlantic Ocean that establish the basin-scale north to south gradient in (231)Pa/(230)Th, and thus the direction of the deep ocean circulation. Our findings are consistent with nutrient-based proxies and argue that further analysis of (231)Pa/(230)Th outside the North Atlantic basin will enhance our understanding of past ocean circulation, provided that spatial gradients are carefully considered. This broader perspective suggests that the modern pattern of the Atlantic MOC-with a prominent southerly flow of deep waters originating in the North Atlantic-arose only during the Holocene epoch.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Negre, Cesar -- Zahn, Rainer -- Thomas, Alexander L -- Masque, Pere -- Henderson, Gideon M -- Martinez-Mendez, Gema -- Hall, Ian R -- Mas, Jose L -- England -- Nature. 2010 Nov 4;468(7320):84-8. doi: 10.1038/nature09508.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Ciencia i Tecnologia Ambientals (ICTA), Universitat Autonoma de Barcelona, 08193 Bellaterra, Spain. cesar@negre.us〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21048764" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Atlantic Ocean ; Atmosphere/chemistry ; Carbon/analysis ; *Cold Climate ; Foraminifera/metabolism ; History, Ancient ; *Ice Cover ; Seawater/*analysis ; Temperature ; *Water Movements
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von Nature Publishing Group (NPG)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 3
    facet.materialart.
    Unbekannt
    Climate-driven basin-scale decadal oscillations of oceanic phytoplankton (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2009-12-08
    Beschreibung: Phytoplankton--the microalgae that populate the upper lit layers of the ocean--fuel the oceanic food web and affect oceanic and atmospheric carbon dioxide levels through photosynthetic carbon fixation. Here, we show that multidecadal changes in global phytoplankton abundances are related to basin-scale oscillations of the physical ocean, specifically the Pacific Decadal Oscillation and the Atlantic Multidecadal Oscillation. This relationship is revealed in approximately 20 years of satellite observations of chlorophyll and sea surface temperature. Interaction between the main pycnocline and the upper ocean seasonal mixed layer is one mechanism behind this correlation. Our findings provide a context for the interpretation of contemporary changes in global phytoplankton and should improve predictions of their future evolution with climate change.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez, Elodie -- Antoine, David -- D'Ortenzio, Fabrizio -- Gentili, Bernard -- New York, N.Y. -- Science. 2009 Nov 27;326(5957):1253-6. doi: 10.1126/science.1177012.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉UPMC University of Paris 06, UMR 7093, Laboratoire d'Oceanographie de Villefranche (LOV), 06230 Villefranche-sur-Mer, France. martinez@obs-vlfr.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965473" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Atlantic Ocean ; Biomass ; Chlorophyll/*analysis ; *Climate ; *Ecosystem ; Global Warming ; Indian Ocean ; Oceans and Seas ; Pacific Ocean ; Phytoplankton/*physiology ; Population Dynamics ; Seasons ; *Seawater/chemistry ; Temperature ; Time Factors
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 4
    facet.materialart.
    Unbekannt
    Changes in North Atlantic nitrogen fixation controlled by ocean circulation (2013)
    Nature Publishing Group (NPG)
    Details
    Publikationsdatum: 2013-08-24
    Beschreibung: In the ocean, the chemical forms of nitrogen that are readily available for biological use (known collectively as 'fixed' nitrogen) fuel the global phytoplankton productivity that exports carbon to the deep ocean. Accordingly, variation in the oceanic fixed nitrogen reservoir has been proposed as a cause of glacial-interglacial changes in atmospheric carbon dioxide concentration. Marine nitrogen fixation, which produces most of the ocean's fixed nitrogen, is thought to be affected by multiple factors, including ocean temperature and the availability of iron and phosphorus. Here we reconstruct changes in North Atlantic nitrogen fixation over the past 160,000 years from the shell-bound nitrogen isotope ratio ((15)N/(14)N) of planktonic foraminifera in Caribbean Sea sediments. The observed changes cannot be explained by reconstructed changes in temperature, the supply of (iron-bearing) dust or water column denitrification. We identify a strong, roughly 23,000-year cycle in nitrogen fixation and suggest that it is a response to orbitally driven changes in equatorial Atlantic upwelling, which imports 'excess' phosphorus (phosphorus in stoichiometric excess of fixed nitrogen) into the tropical North Atlantic surface. In addition, we find that nitrogen fixation was reduced during glacial stages 6 and 4, when North Atlantic Deep Water had shoaled to become glacial North Atlantic intermediate water, which isolated the Atlantic thermocline from excess phosphorus-rich mid-depth waters that today enter from the Southern Ocean. Although modern studies have yielded diverse views of the controls on nitrogen fixation, our palaeobiogeochemical data suggest that excess phosphorus is the master variable in the North Atlantic Ocean and indicate that the variations in its supply over the most recent glacial cycle were dominated by the response of regional ocean circulation to the orbital cycles.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Straub, Marietta -- Sigman, Daniel M -- Ren, Haojia -- Martinez-Garcia, Alfredo -- Meckler, A Nele -- Hain, Mathis P -- Haug, Gerald H -- England -- Nature. 2013 Sep 12;501(7466):200-3. doi: 10.1038/nature12397. Epub 2013 Aug 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geological Institute, Department of Earth Sciences, ETH Zurich, 8092 Zurich, Switzerland. marietta.straub@alumni.ethz.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23965620" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Atlantic Ocean ; Carbon Sequestration ; Carbonates/analysis ; Caribbean Region ; Denitrification ; Foraminifera/metabolism ; Geologic Sediments/chemistry ; History, Ancient ; Ice Cover ; Nitrates/chemical synthesis/chemistry ; *Nitrogen Fixation ; Nitrogen Isotopes/analysis ; Phosphorus/metabolism ; Phytoplankton/metabolism ; *Seawater ; Temperature ; *Water Movements ; Wind
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von Nature Publishing Group (NPG)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 5
    facet.materialart.
    Unbekannt
    Deglacial pulses of deep-ocean silicate into the subtropical North Atlantic Ocean (2013)
    Nature Publishing Group (NPG)
    Details
    Publikationsdatum: 2013-03-30
    Beschreibung: Growing evidence suggests that the low atmospheric CO2 concentration of the ice ages resulted from enhanced storage of CO2 in the ocean interior, largely as a result of changes in the Southern Ocean. Early in the most recent deglaciation, a reduction in North Atlantic overturning circulation seems to have driven CO2 release from the Southern Ocean, but the mechanism connecting the North Atlantic and the Southern Ocean remains unclear. Biogenic opal export in the low-latitude ocean relies on silicate from the underlying thermocline, the concentration of which is affected by the circulation of the ocean interior. Here we report a record of biogenic opal export from a coastal upwelling system off the coast of northwest Africa that shows pronounced opal maxima during each glacial termination over the past 550,000 years. These opal peaks are consistent with a strong deglacial reduction in the formation of silicate-poor glacial North Atlantic intermediate water (GNAIW). The loss of GNAIW allowed mixing with underlying silicate-rich deep water to increase the silicate supply to the surface ocean. An increase in westerly-wind-driven upwelling in the Southern Ocean in response to the North Atlantic change has been proposed to drive the deglacial rise in atmospheric CO2 (refs 3, 4). However, such a circulation change would have accelerated the formation of Antarctic intermediate water and sub-Antarctic mode water, which today have as little silicate as North Atlantic Deep Water and would have thus maintained low silicate concentrations in the Atlantic thermocline. The deglacial opal maxima reported here suggest an alternative mechanism for the deglacial CO2 release. Just as the reduction in GNAIW led to upward silicate transport, it should also have allowed the downward mixing of warm, low-density surface water to reach into the deep ocean. The resulting decrease in the density of the deep Atlantic relative to the Southern Ocean surface promoted Antarctic overturning, which released CO2 to the atmosphere.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meckler, A N -- Sigman, D M -- Gibson, K A -- Francois, R -- Martinez-Garcia, A -- Jaccard, S L -- Rohl, U -- Peterson, L C -- Tiedemann, R -- Haug, G H -- England -- Nature. 2013 Mar 28;495(7442):495-8. doi: 10.1038/nature12006.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geological Institute, ETH Zurich, 8092 Zurich, Switzerland. nele.meckler@erdw.ethz.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23538831" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Africa ; Atlantic Ocean ; Atmosphere/chemistry ; Carbon Dioxide/analysis/metabolism ; *Ice Cover ; Oceans and Seas ; Seawater/*chemistry ; Silicates/*analysis/*metabolism ; Temperature ; Tropical Climate
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von Nature Publishing Group (NPG)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 6
    facet.materialart.
    Unbekannt
    Southern Ocean dust-climate coupling over the past four million years (2011)
    Nature Publishing Group (NPG)
    Details
    Publikationsdatum: 2011-08-05
    Beschreibung: Dust has the potential to modify global climate by influencing the radiative balance of the atmosphere and by supplying iron and other essential limiting micronutrients to the ocean. Indeed, dust supply to the Southern Ocean increases during ice ages, and 'iron fertilization' of the subantarctic zone may have contributed up to 40 parts per million by volume (p.p.m.v.) of the decrease (80-100 p.p.m.v.) in atmospheric carbon dioxide observed during late Pleistocene glacial cycles. So far, however, the magnitude of Southern Ocean dust deposition in earlier times and its role in the development and evolution of Pleistocene glacial cycles have remained unclear. Here we report a high-resolution record of dust and iron supply to the Southern Ocean over the past four million years, derived from the analysis of marine sediments from ODP Site 1090, located in the Atlantic sector of the subantarctic zone. The close correspondence of our dust and iron deposition records with Antarctic ice core reconstructions of dust flux covering the past 800,000 years (refs 8, 9) indicates that both of these archives record large-scale deposition changes that should apply to most of the Southern Ocean, validating previous interpretations of the ice core data. The extension of the record beyond the interval covered by the Antarctic ice cores reveals that, in contrast to the relatively gradual intensification of glacial cycles over the past three million years, Southern Ocean dust and iron flux rose sharply at the Mid-Pleistocene climatic transition around 1.25 million years ago. This finding complements previous observations over late Pleistocene glacial cycles, providing new evidence of a tight connection between high dust input to the Southern Ocean and the emergence of the deep glaciations that characterize the past one million years of Earth history.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez-Garcia, Alfredo -- Rosell-Mele, Antoni -- Jaccard, Samuel L -- Geibert, Walter -- Sigman, Daniel M -- Haug, Gerald H -- England -- Nature. 2011 Aug 3;476(7360):312-5. doi: 10.1038/nature10310.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geological Institute, ETH Zurich, Zurich 8092, Switzerland. alfredo.martinez-garcia@erdw.ethz.ch〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21814203" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Alkanes/analysis ; Atlantic Ocean ; Atmosphere/chemistry ; Carbon Cycle ; Carbon Dioxide/analysis ; *Climate ; Diatoms/metabolism ; Dust/*analysis ; Ecosystem ; Geologic Sediments/chemistry ; History, Ancient ; Ice/analysis ; Iron/analysis ; Nitrates/analysis ; Oceans and Seas ; Reproducibility of Results ; Seawater/*chemistry ; Uncertainty ; Wind
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von Nature Publishing Group (NPG)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 7
    facet.materialart.
    Unbekannt
    Iron fertilization of the Subantarctic ocean during the last ice age (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2014-03-22
    Beschreibung: John H. Martin, who discovered widespread iron limitation of ocean productivity, proposed that dust-borne iron fertilization of Southern Ocean phytoplankton caused the ice age reduction in atmospheric carbon dioxide (CO2). In a sediment core from the Subantarctic Atlantic, we measured foraminifera-bound nitrogen isotopes to reconstruct ice age nitrate consumption, burial fluxes of iron, and proxies for productivity. Peak glacial times and millennial cold events are characterized by increases in dust flux, productivity, and the degree of nitrate consumption; this combination is uniquely consistent with Subantarctic iron fertilization. The associated strengthening of the Southern Ocean's biological pump can explain the lowering of CO2 at the transition from mid-climate states to full ice age conditions as well as the millennial-scale CO2 oscillations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martinez-Garcia, Alfredo -- Sigman, Daniel M -- Ren, Haojia -- Anderson, Robert F -- Straub, Marietta -- Hodell, David A -- Jaccard, Samuel L -- Eglinton, Timothy I -- Haug, Gerald H -- New York, N.Y. -- Science. 2014 Mar 21;343(6177):1347-50. doi: 10.1126/science.1246848.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Geological Institute, ETH Zurich, 8092 Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24653031" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Antarctic Regions ; Atlantic Ocean ; Atmosphere ; Biomass ; *Carbon Dioxide/analysis ; *Climate ; Cold Temperature ; Foraminifera/chemistry/metabolism ; *Geologic Sediments/chemistry ; *Ice Cover ; *Iron/analysis ; Nitrates/analysis/metabolism ; Nitrogen Isotopes/analysis ; Phytoplankton/growth & development/metabolism ; Seawater/chemistry ; Time
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 8
    facet.materialart.
    Unbekannt
    A stagnation event in the deep South Atlantic during the last interglacial period (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2014-12-20
    Beschreibung: During the last interglacial period, global temperatures were ~2 degrees C warmer than at present and sea level was 6 to 8 meters higher. Southern Ocean sediments reveal a spike in authigenic uranium 127,000 years ago, within the last interglacial, reflecting decreased oxygenation of deep water by Antarctic Bottom Water (AABW). Unlike ice age reductions in AABW, the interglacial stagnation event appears decoupled from open ocean conditions and may have resulted from coastal freshening due to mass loss from the Antarctic ice sheet. AABW reduction coincided with increased North Atlantic Deep Water (NADW) formation, and the subsequent reinvigoration in AABW coincided with reduced NADW formation. Thus, alternation of deep water formation between the Antarctic and the North Atlantic, believed to characterize ice ages, apparently also occurs in warm climates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hayes, Christopher T -- Martinez-Garcia, Alfredo -- Hasenfratz, Adam P -- Jaccard, Samuel L -- Hodell, David A -- Sigman, Daniel M -- Haug, Gerald H -- Anderson, Robert F -- New York, N.Y. -- Science. 2014 Dec 19;346(6216):1514-7. doi: 10.1126/science.1256620.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology (MIT), Cambridge, MA 02142, USA. Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA. cthayes@mit.edu. ; Geological Institute, ETH Zurich, 8092 Zurich, Switzerland. ; Institute of Geological Sciences and Oeschger Centre for Climate Change Research, University of Bern, 3012 Bern, Switzerland. ; Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ, UK. ; Department of Geosciences, Princeton University, Princeton, NJ 08544, USA. ; Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10964, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25525246" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Atlantic Ocean ; Climate Change ; *Ice Cover ; Oxygen/analysis ; Salinity ; *Seawater
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...