Reimer, Andreas

[["dc.bibliographiccitation.firstpage","4883"],["dc.bibliographiccitation.issue","20"],["dc.bibliographiccitation.journal","Biogeosciences"],["dc.bibliographiccitation.lastpage","4902"],["dc.bibliographiccitation.volume","19"],["dc.contributor.author","Arif, Sania"],["dc.contributor.author","Nacke, Heiko"],["dc.contributor.author","Schliekmann, Elias"],["dc.contributor.author","Reimer, Andreas"],["dc.contributor.author","Arp, Gernot"],["dc.contributor.author","Hoppert, Michael"],["dc.date.accessioned","2022-11-01T10:17:31Z"],["dc.date.available","2022-11-01T10:17:31Z"],["dc.date.issued","2022"],["dc.description.abstract","Abstract. The Kilianstollen Marsberg (Rhenish Massif, Germany) has\r\nbeen extensively mined for copper ores, dating from early medieval period\r\nuntil 1945. The exposed organic-rich alum shale rocks influenced by the\r\ndiverse mine drainages at an ambient temperature of 10 ∘C could\r\nnaturally enrich biogeochemically distinct heavy metal resistant microbiota.\r\nThis amplicon-sequence-based study evaluates the microbially colonized\r\nsubterranean rocks of the abandoned copper mine Kilianstollen to\r\ncharacterize the colonization patterns and biogeochemical pathways of\r\nindividual microbial groups. Under the selective pressure of the heavy metal\r\ncontaminated environment at illuminated sites, Chloroflexi (Ktedonobacteria) and Cyanobacteria (Oxyphotobacteria) build up\r\nwhitish–greenish biofilms. In contrast, Proteobacteria, Firmicutes and Actinobacteria dominate rocks around the\r\nuncontaminated spring water streams. The additional metagenomic analysis\r\nrevealed that the heavy metal resistant microbiome was evidently involved in\r\nredox cycling of transition metals (Cu, Zn, Co, Ni, Mn, Fe, Cd, Hg). No\r\ndeposition of metals or minerals, though, was observed by transmission\r\nelectron microscopy in Ktedonobacteria biofilms which may be indicative for the presence of\r\ndifferent detoxification pathways. The underlying heavy metal resistance\r\nmechanisms, as revealed by analysis of metagenome-assembled genomes, were\r\nmainly attributed to transition metal efflux pumps, redox enzymes,\r\nvolatilization of Hg, methylated intermediates of As3+, and reactive\r\noxygen species detoxification pathways."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2022"],["dc.identifier.doi","10.5194/bg-19-4883-2022"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/116831"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-605"],["dc.relation.eissn","1726-4189"],["dc.rights","CC BY 4.0"],["dc.title","Composition and niche-specific characteristics of microbial consortia colonizing Marsberg copper mine in the Rhenish Massif"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","unpublished"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","195"],["dc.bibliographiccitation.issue","1-2"],["dc.bibliographiccitation.journal","Aquatic Geochemistry"],["dc.bibliographiccitation.lastpage","222"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Reimer, Andreas"],["dc.contributor.author","Landmann, Guenter"],["dc.contributor.author","Kempe, Stephan"],["dc.date.accessioned","2018-11-07T08:32:53Z"],["dc.date.available","2018-11-07T08:32:53Z"],["dc.date.issued","2009"],["dc.description.abstract","Saline, 450-m-deep Lake Van (Eastern Anatolia, Turkey) is, with 576 km(3), the third largest closed lake on Earth and its largest soda lake. In 1989 and 1990, we investigated the hydrochemistry of the lake's water column and of the tributary rivers. We also cored the Postglacial sediment column at various water depths. The sediment is varved throughout, allowing precise dating back to ca. 15 ka BP. Furthermore, lake terrace sediments provided a 606-year-long floating chronology of the Glacial high-stand of the lake dating to 21 cal. ka BP. The sediments were investigated for their general mineralogical composition, important geochemical parameters, and pore water chemistry as well. These data allow reconstructing the history of the lake level that has seen several regressions and transgressions since the high-stand at the end of the Last Glacial Maximum. Today, the lake is very alkaline, highly supersaturated with Ca-carbonate and has a salt content of about 22 g kg(-1). In summer, the warmer epilimnion is diluted with river water and forms a stable surface layer. Depth of winter mixing differs from year to year but during time of investigation the lake was oxygenated down to its bottom. In general, the lake is characterized by an Na-CO(3)-Cl-(SO(4))-chemistry that evolved from the continuous loss of calcium as carbonate and magnesium in the form of Mg-silica-rich mineral phases. The Mg cycle is closely related to that of silica which in turn is governed by the production and dissolution of diatoms as the dominant phytoplankton species in Lake Van. In addition to Ca and Mg, a mass balance approach based on the recent lake chemistry and river influx suggests a fractional loss of potassium, sodium, sulfur, and carbon in comparison to chloride in the compositional history of Lake Van. Within the last 3 ka, minor lake level changes seem to control the frequency of deep water renewal, the depth of stratification, and the redox state of the hypolimnion. Former major regressions are marked by Mg-carbonate occurrences in the otherwise Ca-carbonate dominated sediment record. Pore water data suggest that, subsequent to the major regression culminating at 10.7 ka BP, a brine layer formed in the deep basin that existed for about 7 ka. Final overturn of the lake, triggered by the last major regression starting at about 3.5 ka BP, may partly account for the relative depletion in sulfur and carbon due to rapid loss of accumulated gases. An even stronger desiccation phase is proposed for the time span between about 20 and 15 ka BP following the LGM, during which major salts could have been lost by precipitation of Na-carbonates and Na-sulfates."],["dc.description.sponsorship","DFG [395/2-(1-4)]; Volkswagen Foundation"],["dc.identifier.doi","10.1007/s10498-008-9049-9"],["dc.identifier.isi","000264831200008"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3576"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/17440"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1380-6165"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Lake Van, Eastern Anatolia, Hydrochemistry and History"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","105"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Sedimentary Research"],["dc.bibliographiccitation.lastpage","127"],["dc.bibliographiccitation.volume","73"],["dc.contributor.author","Arp, Gernot"],["dc.contributor.author","Reimer, Andreas"],["dc.contributor.author","Reitner, Joachim"],["dc.date.accessioned","2018-11-07T10:42:37Z"],["dc.date.available","2018-11-07T10:42:37Z"],["dc.date.issued","2003"],["dc.description.abstract","The crater lake of the small volcanic island Satonda, Indonesia, is unique for its red-algal microbial reefs thriving in marine-derived water of increased alkalinity. The lake is a potential analogue for ancient oceans sustaining microbialites under open-marine conditions. Current reef surfaces are dominated by living red algae covered by non-calcified biofilms with scattered cyanobacteria and diatoms. Minor CaCO3 precipitates are restricted to the seasonally flooded reef tops, which develop biofilms up to 500 mum thick dominated by the cyanobacteria Pleurocapsa, Calothrix, Phormidium, and Hyella. Microcrystalline aragonite patches form within the biofilm mucilage, and fibrous aragonite cements grow in exopolymer-poor spaces such as the inside of dead, lysed green algal cells, and reef framework voids. Cementation of lysed hadromerid sponge resting bodies results in the formation of \"Wetheredella-like\" structures. Hydrochemistry data and model calculations indicate that CO2 degassing after seasonal mixis can shift the carbonate equilibrium to cause CaCO3 precipitation. Increased concentrations of dissolved inorganic carbon limit the ability of autotrophic biofilm microorganisms to shift the carbonate equilibrium. Therefore, photosynthesis-induced cyanobacterial calcification does not occur. Instead, passive, diffusion-controlled EPS-mediated permineralization of biofilm mucus at contact with the considerably supersaturated open lake water takes place. In contrast to extreme soda lakes, the release of Ca2+ from aerobic degradation of extracellular polymeric substances does not support CaCO3 precipitation in Satonda because the simultaneously released CO2 is insufficiently buffered. Subfossil reef parts comprise green algal tufts encrusted by micro-stromatolites with layers of fibrous aragonite and an amorphous, unidentified Mg-Si phase. The microstromatolites probably formed when Lake Satonda evolved from seawater to Ca2+-depleted raised-alkalinity conditions because of sulfate reduction in bottom sediments and pronounced seasonality with deep mixing events and strong CO2 degassing. The latter effect caused rapid growth of fibrous aragonite, while Mg-Si layers replaced the initially Mg-calcite-impregnated biofilms. This could be explained by dissolution of siliceous diatoms and sponge spicules at high pH, followed by Mg-calcite dissolution and Mg-silica precipitation at low pH due to heterotrophic activity within the entombed biofilms."],["dc.identifier.doi","10.1306/071002730105"],["dc.identifier.isi","000180490900011"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/2202"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/46842"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1938-3681"],["dc.relation.issn","1527-1404"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Microbialite formation in seawater of increased alkalinity, Satonda crater lake, Indonesia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","6"],["dc.bibliographiccitation.journal","Frontiers in Earth Science"],["dc.bibliographiccitation.volume","3"],["dc.contributor.author","Heim, Christine N."],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Ionescu, Danny"],["dc.contributor.author","Reimer, Andreas"],["dc.contributor.author","de Beer, Dirk"],["dc.contributor.author","Quéric, Nadia Valérie"],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Thiel, Volker"],["dc.date.accessioned","2019-07-09T11:41:14Z"],["dc.date.available","2019-07-09T11:41:14Z"],["dc.date.issued","2015"],["dc.description.abstract","Microbial iron oxyhydroxides are common deposits in natural waters, recent sediments, and mine drainage systems. Along with these minerals, trace and rare earth elements (TREE) are being accumulated within the mineralizing microbial mats. TREE patterns are widely used to characterize minerals and rocks, and to elucidate their evolution and origin. However, whether and which characteristic TREE signatures distinguish between a biological and an abiological origin of iron minerals is still not well-understood. Here we report on long-term flow reactor studies performed in the Tunnel of Äspö (Äspö Hard Rock Laboratory, Sweden). The development of microbial mats dominated by iron-oxidizing bacteria (FeOB), namely Mariprofundus sp. and Gallionella sp were investigated. The feeder fluids of the flow reactors were tapped at 183 and 290 m below sea-level from two brackish, but chemically different aquifers within the surrounding, ~1.8 Ga old, granodioritic rocks. The experiments investigated the accumulation and fractionation of TREE under controlled conditions of the subsurface continental biosphere, and enabled us to assess potential biosignatures evolving within the microbial iron oxyhydroxides. After 2 and 9 months, concentrations of Be, Y, Zn, Zr, Hf, W, Th, Pb, and U in the microbial mats were 103- to 105-fold higher than in the feeder fluids whereas the rare earth elements and Y (REE+Y) contents were 104- and 106-fold enriched. Except for a hydrothermally induced Eu anomaly, the normalized REE+Y patterns of the microbial iron oxyhydroxides were very similar to published REE+Y distributions of Archaean Banded Iron Formations (BIFs). The microbial iron oxyhydroxides from the flow reactors were compared to iron oxyhydroxides that were artificially precipitated from the same feeder fluid. Remarkably, these abiotic and inorganic iron oxyhydroxides show the same REE+Y distribution patterns. Our results indicate that the REE+Y mirror closely the water chemistry, but they do not allow to distinguish microbially mediated from inorganic iron precipitates. Likewise, all TREE studied showed an overall similar fractionation behavior in biogenic, abiotic, and inorganic iron oxyhydroxides. Exceptions are Ni and Tl, which were only accumulated in the microbial iron oxyhydroxides and may point to a potential utility of these elements as microbial biosignatures."],["dc.identifier.doi","10.3389/feart.2015.00006"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11851"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58377"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.publisher","Frontiers Media S.A."],["dc.relation.eissn","2296-6463"],["dc.relation.issn","2296-6463"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Assessing the utility of trace and rare earth elements as biosignatures in microbial iron oxyhydroxides"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","18"],["dc.bibliographiccitation.issue","1-3"],["dc.bibliographiccitation.journal","Palaeogeography Palaeoclimatology Palaeoecology"],["dc.bibliographiccitation.lastpage","30"],["dc.bibliographiccitation.volume","227"],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Peckmann, Jörn"],["dc.contributor.author","Blumenberg, Martin"],["dc.contributor.author","Michaelis, Walter"],["dc.contributor.author","Reimer, Andreas"],["dc.contributor.author","Thiel, Volker"],["dc.date.accessioned","2018-11-07T10:54:53Z"],["dc.date.available","2018-11-07T10:54:53Z"],["dc.date.issued","2005"],["dc.description.abstract","Gas seeps in the euxinic northwestern Black Sea provide an excellent opportunity to study anaerobic, methane-based ecosystems with minimum interference froin oxygen -dependent processes. An integrated approach using fluorescence- and electron microscopy, fluorescence in situ hybridization, lipid biomarkers, stable isotopes (delta(13)C), and petrography revealed insight into the anatomy of concretionary methane-derived carbonates currently forming within the sediment around seeps. Some of the carbonate concretions have been found to be surrounded by microbial mats. The mats harbour colonies of sulphate-reducing bacteria (DSS-group), and archaea (ANME-1), putative players in the anaerobic oxidation of methane. Isotopically-depleted lipid biomarkers indicate an uptake of methane carbon into the biomass of the mat biota, Microbial metabolism sustains the precipitation of concretionary carbonates, significantly depleted in C-13. The concretions consist of rectangularly orientated, rod- to dumbbell-shaped crystal aggregates made of fibrous high Mg-calcite. The sulphate-reducing bacteria exhibit intracellular storage inclusions, and magnetosomes with greigite (Fe3S4), indicating that iron cycling is involved in the metabolism of the microbial population. Transfer of Fe3+ into the cells is apparently mediated by abundant extracellular vesicles resembling known bacterial sideropbore vesicles (marinobactine) in size (20 to 100 nm) and structure. (c) 2005 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.palaeo.2005.04.033"],["dc.identifier.isi","000233028600003"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11247"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49667"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0031-0182"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Concretionary methane-seep carbonates and associated microbial communities in Black Sea sediments"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","163"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Data"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","von Hoyningen-Huene, Avril Jean Elisabeth"],["dc.contributor.author","Schneider, Dominik"],["dc.contributor.author","Fussmann, Dario"],["dc.contributor.author","Reimer, Andreas"],["dc.contributor.author","Arp, Gernot"],["dc.contributor.author","Daniel, Rolf"],["dc.date.accessioned","2019-09-24T08:10:48Z"],["dc.date.available","2019-09-24T08:10:48Z"],["dc.date.issued","2019"],["dc.description.abstract","We provide bacterial 16S rRNA community and hydrochemical data from water and sediments of Lake Neusiedl, Austria. The sediments were retrieved at 5 cm intervals from 30-40 cm push cores. The lake water community was recovered by filtration through a 3.0/0.2 µm filter sandwich. For 16S rRNA gene amplicon-based community profiling, DNA was extracted from the sediment and filters and the bacterial V3-V4 regions were amplified and sequenced using a MiSeq instrument (Illumina). The reads were quality-filtered and processed using open source bioinformatic tools, such as PEAR, cutadapt and VSEARCH. The taxonomy was assigned against the SILVA SSU NR 132 database. The bacterial community structure was visualised in relation to water and porewater chemistry data. The bacterial community in the water column is distinct from the sediment. The most abundant phyla in the sediment shift from Proteobacteria to Chloroflexota (formerly Chloroflexi). Ammonium and total alkalinity increase while sulphate concentrations in the porewater decrease. The provided data are of interest for studies targeting biogeochemical cycling in lake sediments."],["dc.identifier.doi","10.1038/s41597-019-0172-9"],["dc.identifier.pmid","31471542"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16400"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62453"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.eissn","2052-4463"],["dc.relation.issn","2052-4463"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Bacterial succession along a sediment porewater gradient at Lake Neusiedl in Austria"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e66662"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","PLoS ONE"],["dc.bibliographiccitation.volume","8"],["dc.contributor.author","Schneider, Dominik"],["dc.contributor.author","Arp, Gernot"],["dc.contributor.author","Reimer, Andreas"],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Daniel, Rolf"],["dc.date.accessioned","2018-11-07T09:23:42Z"],["dc.date.available","2018-11-07T09:23:42Z"],["dc.date.issued","2013"],["dc.description.abstract","On the Kiritimati atoll, several lakes exhibit microbial mat-formation under different hydrochemical conditions. Some of these lakes trigger microbialite formation such as Lake 21, which is an evaporitic, hypersaline lake (salinity of approximately 170%). Lake 21 is completely covered with a thick multilayered microbial mat. This mat is associated with the formation of decimeter-thick highly porous microbialites, which are composed of aragonite and gypsum crystals. We assessed the bacterial and archaeal community composition and its alteration along the vertical stratification by large-scale analysis of 16S rRNA gene sequences of the nine different mat layers. The surface layers are dominated by aerobic, phototrophic, and halotolerant microbes. The bacterial community of these layers harbored Cyanobacteria (Halothece cluster), which were accompanied with known phototrophic members of the Bacteroidetes and Alphaproteobacteria. In deeper anaerobic layers more diverse communities than in the upper layers were present. The deeper layers were dominated by Spirochaetes, sulfate-reducing bacteria (Deltaproteobacteria), Chloroflexi (Anaerolineae and Caldilineae), purple non-sulfur bacteria (Alphaproteobacteria), purple sulfur bacteria (Chromatiales), anaerobic Bacteroidetes (Marinilabiacae), Nitrospirae (OPB95), Planctomycetes and several candidate divisions. The archaeal community, including numerous uncultured taxonomic lineages, generally changed from Euryarchaeota (mainly Halobacteria and Thermoplasmata) to uncultured members of the Thaumarchaeota (mainly Marine Benthic Group B) with increasing depth."],["dc.identifier.doi","10.1371/journal.pone.0066662"],["dc.identifier.isi","000320440500068"],["dc.identifier.pmid","23762495"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/9155"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/29644"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY-NC 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by-nc/3.0"],["dc.title","Phylogenetic Analysis of a Microbialite-Forming Microbial Mat from a Hypersaline Lake of the Kiritimati Atoll, Central Pacific"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","sed.12888"],["dc.bibliographiccitation.firstpage","2965"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","Sedimentology"],["dc.bibliographiccitation.lastpage","2995"],["dc.bibliographiccitation.volume","68"],["dc.contributor.affiliation","Zeng, Lingqi; 1Georg‐August‐Universität Göttingen Geowissenschaftliches Zentrum, Goldschmidtstrasse 3 Göttingen 37077 Germany"],["dc.contributor.affiliation","Ruge, Dag B.; 1Georg‐August‐Universität Göttingen Geowissenschaftliches Zentrum, Goldschmidtstrasse 3 Göttingen 37077 Germany"],["dc.contributor.affiliation","Berger, Günther; 2\r\nSudetenstraße 6 Pleinfeld Germany"],["dc.contributor.affiliation","Heck, Karin; 3Staatliche Naturwissenschaftliche Sammlungen Bayerns ‐ RiesKraterMuseum Nördlingen Eugene‐Shoemaker‐Platz 1 Nördlingen 86720 Germany"],["dc.contributor.affiliation","Hölzl, Stefan; 3Staatliche Naturwissenschaftliche Sammlungen Bayerns ‐ RiesKraterMuseum Nördlingen Eugene‐Shoemaker‐Platz 1 Nördlingen 86720 Germany"],["dc.contributor.affiliation","Reimer, Andreas; 1Georg‐August‐Universität Göttingen Geowissenschaftliches Zentrum, Goldschmidtstrasse 3 Göttingen 37077 Germany"],["dc.contributor.affiliation","Jung, Dietmar; 4Bayerisches Landesamt für Umwelt Geologischer Dienst, Hans‐Högn‐Straße 12 Hof/Saale 95030 Germany"],["dc.contributor.affiliation","Arp, Gernot; 1Georg‐August‐Universität Göttingen Geowissenschaftliches Zentrum, Goldschmidtstrasse 3 Göttingen 37077 Germany"],["dc.contributor.author","Zeng, Lingqi"],["dc.contributor.author","Ruge, Dag B."],["dc.contributor.author","Berger, Günther"],["dc.contributor.author","Heck, Karin"],["dc.contributor.author","Hölzl, Stefan"],["dc.contributor.author","Reimer, Andreas"],["dc.contributor.author","Jung, Dietmar"],["dc.contributor.author","Arp, Gernot"],["dc.contributor.editor","Arenas, Concha"],["dc.date.accessioned","2021-08-12T07:45:26Z"],["dc.date.available","2021-08-12T07:45:26Z"],["dc.date.issued","2021"],["dc.date.updated","2022-03-21T04:00:20Z"],["dc.description.abstract","Abstract The identification and distinction of fluvial from lacustrine deposits and the recognition of catchment changes are crucial for the reconstruction of climate changes in terrestrial environments. The investigated drill core succession shows a general evolution from red–brown claystones to white–grey marlstones and microcrystalline limestones, which all have previously been considered as relict deposits of an impact ejecta‐dammed lake, falling within the mid‐Miocene Climate Transition. However, recent mammal biostratigraphic dating suggests a likely pre‐impact age. Indeed, no pebbles from impact ejecta have been detected; only local clasts of Mesozoic formations, in addition to rare Palaeozoic lydites from outside of the study area. Lithofacies analysis demonstrates only the absence of lacustrine criteria, except for one charophyte‐bearing mudstone. Instead, the succession is characterized by less diagnostic floodplain fines with palaeosols, palustrine limestones with root voids and intercalated thin sandstone beds. Carbonate isotope signatures of the mottled marlstones, palustrine limestones and mud‐supported conglomerates substantiate the interpretation of a fluvial setting. Low, invariant δ18Ocarb reflects a short water residence time and highly variable δ13Ccarb indicates a variable degree of pedogenesis. Carbonate 87Sr/86Sr ratios of the entire succession show a unidirectional trend from 0.7103 to 0.7112, indicating a change of the solute provenance from Triassic to Jurassic rocks, identical to the provenance trend from extraclasts. The increase in carbonate along the succession is therefore independent from climate changes but reflects a base‐level rise from the level of the siliciclastic Upper Triassic to the carbonate‐bearing Lower to Middle Jurassic bedrocks. This study demonstrates that, when information on sedimentary architecture is limited, a combination of facies criteria (i.e. presence or absence of specific sedimentary structures and diagnostic organisms), component provenance, and stable and radiogenic isotopes is required to unequivocally distinguish between lacustrine and fluvial sediments, and to disentangle regional geological effects in the catchment and climate influences."],["dc.description.sponsorship","China Scholarship Council http://dx.doi.org/10.13039/501100003398"],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659"],["dc.identifier.doi","10.1111/sed.12888"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/88466"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-448"],["dc.relation.eissn","1365-3091"],["dc.relation.issn","0037-0746"],["dc.rights","This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes."],["dc.title","Sedimentological and carbonate isotope signatures to identify fluvial processes and catchment changes in a supposed impact ejecta‐dammed lake (Miocene, Germany)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","4257"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","von Hoyningen-Huene, Avril Jean Elisabeth"],["dc.contributor.author","Schneider, Dominik"],["dc.contributor.author","Fussmann, Dario"],["dc.contributor.author","Reimer, Andreas"],["dc.contributor.author","Arp, Gernot"],["dc.contributor.author","Daniel, Rolf"],["dc.date.accessioned","2022-04-01T10:00:46Z"],["dc.date.available","2022-04-01T10:00:46Z"],["dc.date.issued","2022"],["dc.description.abstract","The remote Aldabra Atoll, Seychelles, provides the rare opportunity to study bacterial communities in pristine carbonate sediments across an entire biome. The four sampled sites cover sand with high porewater exchange, bioturbated silt and mud with intermediate exchange, as well as a seasonally and episodically desiccated landlocked pool. As sediments harbour dead cells and environmental DNA alongside live cells, we used bacterial 16S rRNA gene and transcript analysis to distinguish between past and present inhabitants. Previously described laminated sediments mirroring past conditions in the Cerin, France could not be retrieved. Thus, the aim was adjusted to determine whether bacterial community composition and diversity follow typical geochemical zonation patterns at different locations of the atoll. Our data confirm previous observations that diversity decreases with depth. In the lagoon, the bacterial community composition changed from Pseudomonas dominating in the sand to diverse mixed surface and sulphate reduction zones in the anaerobic mud with strongly negative Eh. The latter correlated with high total alkalinity, ammonia, and total sulphide, alongside a decrease in SO42−/Cl− and high relative abundances of sulphate reducing (Halo-) Desulfovibrio, sulphur oxidizing Arcobacteraceae, photo(hetero)troph Cyanobacteria, Alphaproteobacteria, and fermenting Propionigenium. In contrast to expectations, deeper mud and pool sediments harboured high abundances of Halomonas or Alphaproteobacteria alongside high C/N and increased salinity. We believe that this atypical community shift may be driven by a change in the complexity of available organic matter."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2022"],["dc.identifier.doi","10.1038/s41598-022-07980-0"],["dc.identifier.pii","7980"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/105505"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-530"],["dc.relation.eissn","2045-2322"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","DNA- and RNA-based bacterial communities and geochemical zonation under changing sediment porewater dynamics on the Aldabra Atoll"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","The Astrophysical Journal"],["dc.bibliographiccitation.volume","933"],["dc.contributor.affiliation","Abdollahi, S.;"],["dc.contributor.affiliation","Acero, F.;"],["dc.contributor.affiliation","Ackermann, M.;"],["dc.contributor.affiliation","Baldini, L.;"],["dc.contributor.affiliation","Ballet, J.;"],["dc.contributor.affiliation","Barbiellini, G.;"],["dc.contributor.affiliation","Bastieri, D.;"],["dc.contributor.affiliation","Bellazzini, R.;"],["dc.contributor.affiliation","Berenji, B.;"],["dc.contributor.affiliation","Berretta, A.;"],["dc.contributor.affiliation","Bissaldi, E.;"],["dc.contributor.affiliation","Blandford, R. D.;"],["dc.contributor.affiliation","Bonino, R.;"],["dc.contributor.affiliation","Bruel, P.;"],["dc.contributor.affiliation","Buson, S.;"],["dc.contributor.affiliation","Cameron, R. A.;"],["dc.contributor.affiliation","Caputo, R.;"],["dc.contributor.affiliation","Caraveo, P. A.;"],["dc.contributor.affiliation","Castro, D.;"],["dc.contributor.affiliation","Chiaro, G.;"],["dc.contributor.affiliation","Cibrario, N.;"],["dc.contributor.affiliation","Ciprini, S.;"],["dc.contributor.affiliation","Coronado-Blázquez, J.;"],["dc.contributor.affiliation","Crnogorcevic, M.;"],["dc.contributor.affiliation","Cutini, S.;"],["dc.contributor.affiliation","D’Ammando, F.;"],["dc.contributor.affiliation","De Gaetano, S.;"],["dc.contributor.affiliation","Di Lalla, N.;"],["dc.contributor.affiliation","Dirirsa, F.;"],["dc.contributor.affiliation","Di Venere, L.;"],["dc.contributor.affiliation","Domínguez, A.;"],["dc.contributor.affiliation","Fegan, S. J.;"],["dc.contributor.affiliation","Fiori, A.;"],["dc.contributor.affiliation","Fleischhack, H.;"],["dc.contributor.affiliation","Franckowiak, A.;"],["dc.contributor.affiliation","Fukazawa, Y.;"],["dc.contributor.affiliation","Fusco, P.;"],["dc.contributor.affiliation","Gammaldi, V.;"],["dc.contributor.affiliation","Gargano, F.;"],["dc.contributor.affiliation","Gasparrini, D.;"],["dc.contributor.affiliation","Giacchino, F.;"],["dc.contributor.affiliation","Giglietto, N.;"],["dc.contributor.affiliation","Giordano, F.;"],["dc.contributor.affiliation","Giroletti, M.;"],["dc.contributor.affiliation","Glanzman, T.;"],["dc.contributor.affiliation","Green, D.;"],["dc.contributor.affiliation","Grenier, I. A.;"],["dc.contributor.affiliation","Grondin, M.-H.;"],["dc.contributor.affiliation","Guiriec, S.;"],["dc.contributor.affiliation","Gustafsson, M.;"],["dc.contributor.affiliation","Harding, A. K.;"],["dc.contributor.affiliation","Hays, E.;"],["dc.contributor.affiliation","Hewitt, J. W.;"],["dc.contributor.affiliation","Horan, D.;"],["dc.contributor.affiliation","Hou, X.;"],["dc.contributor.affiliation","Jóhannesson, G.;"],["dc.contributor.affiliation","Kayanoki, T.;"],["dc.contributor.affiliation","Kerr, M.;"],["dc.contributor.affiliation","Kuss, M.;"],["dc.contributor.affiliation","Larsson, S.;"],["dc.contributor.affiliation","Latronico, L.;"],["dc.contributor.affiliation","Lemoine-Goumard, M.;"],["dc.contributor.affiliation","Li, J.;"],["dc.contributor.affiliation","Longo, F.;"],["dc.contributor.affiliation","Loparco, F.;"],["dc.contributor.affiliation","Lubrano, P.;"],["dc.contributor.affiliation","Maldera, S.;"],["dc.contributor.affiliation","Malyshev, D.;"],["dc.contributor.affiliation","Manfreda, A.;"],["dc.contributor.affiliation","Martí-Devesa, G.;"],["dc.contributor.affiliation","Mazziotta, M. N.;"],["dc.contributor.affiliation","Mereu, I.;"],["dc.contributor.affiliation","Michelson, P. F.;"],["dc.contributor.affiliation","Mirabal, N.;"],["dc.contributor.affiliation","Mitthumsiri, W.;"],["dc.contributor.affiliation","Mizuno, T.;"],["dc.contributor.affiliation","Monzani, M. E.;"],["dc.contributor.affiliation","Morselli, A.;"],["dc.contributor.affiliation","Moskalenko, I. V.;"],["dc.contributor.affiliation","Nuss, E.;"],["dc.contributor.affiliation","Omodei, N.;"],["dc.contributor.affiliation","Orienti, M.;"],["dc.contributor.affiliation","Orlando, E.;"],["dc.contributor.affiliation","Ormes, J. F.;"],["dc.contributor.affiliation","Paneque, D.;"],["dc.contributor.affiliation","Pei, Z.;"],["dc.contributor.affiliation","Persic, M.;"],["dc.contributor.affiliation","Pesce-Rollins, M.;"],["dc.contributor.affiliation","Pillera, R.;"],["dc.contributor.affiliation","Poon, H.;"],["dc.contributor.affiliation","Porter, T. A.;"],["dc.contributor.affiliation","Principe, G.;"],["dc.contributor.affiliation","Rainò, S.;"],["dc.contributor.affiliation","Rando, R.;"],["dc.contributor.affiliation","Rani, B.;"],["dc.contributor.affiliation","Razzano, M.;"],["dc.contributor.affiliation","Razzaque, S.;"],["dc.contributor.affiliation","Reimer, A.;"],["dc.contributor.affiliation","Reimer, O.;"],["dc.contributor.affiliation","Reposeur, T.;"],["dc.contributor.affiliation","Sánchez-Conde, M.;"],["dc.contributor.affiliation","Saz Parkinson, P. M.;"],["dc.contributor.affiliation","Scotton, L.;"],["dc.contributor.affiliation","Serini, D.;"],["dc.contributor.affiliation","Sgrò, C.;"],["dc.contributor.affiliation","Siskind, E. J.;"],["dc.contributor.affiliation","Spandre, G.;"],["dc.contributor.affiliation","Spinelli, P.;"],["dc.contributor.affiliation","Sueoka, K.;"],["dc.contributor.affiliation","Suson, D. J.;"],["dc.contributor.affiliation","Tajima, H.;"],["dc.contributor.affiliation","Tak, D.;"],["dc.contributor.affiliation","Thayer, J. B.;"],["dc.contributor.affiliation","Torres, D. F.;"],["dc.contributor.affiliation","Troja, E.;"],["dc.contributor.affiliation","Valverde, J.;"],["dc.contributor.affiliation","Wadiasingh, Z.;"],["dc.contributor.affiliation","Wood, K.;"],["dc.contributor.affiliation","Zaharijas, G.;"],["dc.contributor.author","Abdollahi, S."],["dc.contributor.author","Acero, F."],["dc.contributor.author","Ackermann, M."],["dc.contributor.author","Baldini, L."],["dc.contributor.author","Ballet, J."],["dc.contributor.author","Barbiellini, G."],["dc.contributor.author","Bastieri, D."],["dc.contributor.author","Bellazzini, R."],["dc.contributor.author","Berenji, B."],["dc.contributor.author","Berretta, A."],["dc.contributor.author","Bissaldi, E."],["dc.contributor.author","Blandford, R. D."],["dc.contributor.author","Bonino, R."],["dc.contributor.author","Bruel, P."],["dc.contributor.author","Buson, S."],["dc.contributor.author","Cameron, R. A."],["dc.contributor.author","Caputo, R."],["dc.contributor.author","Caraveo, P. A."],["dc.contributor.author","Castro, D."],["dc.contributor.author","Chiaro, G."],["dc.contributor.author","Cibrario, N."],["dc.contributor.author","Ciprini, S."],["dc.contributor.author","Coronado-Blázquez, J."],["dc.contributor.author","Crnogorcevic, M."],["dc.contributor.author","Cutini, S."],["dc.contributor.author","D’Ammando, F."],["dc.contributor.author","De Gaetano, S."],["dc.contributor.author","Di Lalla, N."],["dc.contributor.author","Dirirsa, F."],["dc.contributor.author","Di Venere, L."],["dc.contributor.author","Domínguez, A."],["dc.contributor.author","Fegan, S. J."],["dc.contributor.author","Fiori, A."],["dc.contributor.author","Fleischhack, H."],["dc.contributor.author","Franckowiak, A."],["dc.contributor.author","Fukazawa, Y."],["dc.contributor.author","Fusco, P."],["dc.contributor.author","Gammaldi, V."],["dc.contributor.author","Gargano, F."],["dc.contributor.author","Gasparrini, D."],["dc.contributor.author","Giacchino, F."],["dc.contributor.author","Giglietto, N."],["dc.contributor.author","Giordano, F."],["dc.contributor.author","Giroletti, M."],["dc.contributor.author","Glanzman, T."],["dc.contributor.author","Green, D."],["dc.contributor.author","Grenier, I. A."],["dc.contributor.author","Grondin, M.-H."],["dc.contributor.author","Guiriec, S."],["dc.contributor.author","Gustafsson, M."],["dc.contributor.author","Harding, A. K."],["dc.contributor.author","Hays, E."],["dc.contributor.author","Hewitt, J. W."],["dc.contributor.author","Horan, D."],["dc.contributor.author","Hou, X."],["dc.contributor.author","Jóhannesson, G."],["dc.contributor.author","Kayanoki, T."],["dc.contributor.author","Kerr, M."],["dc.contributor.author","Kuss, M."],["dc.contributor.author","Larsson, S."],["dc.contributor.author","Latronico, L."],["dc.contributor.author","Lemoine-Goumard, M."],["dc.contributor.author","Li, J."],["dc.contributor.author","Longo, F."],["dc.contributor.author","Loparco, F."],["dc.contributor.author","Lubrano, P."],["dc.contributor.author","Maldera, S."],["dc.contributor.author","Malyshev, D."],["dc.contributor.author","Manfreda, A."],["dc.contributor.author","Martí-Devesa, G."],["dc.contributor.author","Mazziotta, M. N."],["dc.contributor.author","Mereu, I."],["dc.contributor.author","Michelson, P. F."],["dc.contributor.author","Mirabal, N."],["dc.contributor.author","Mitthumsiri, W."],["dc.contributor.author","Mizuno, T."],["dc.contributor.author","Monzani, M. E."],["dc.contributor.author","Morselli, A."],["dc.contributor.author","Moskalenko, I. V."],["dc.contributor.author","Nuss, E."],["dc.contributor.author","Omodei, N."],["dc.contributor.author","Orienti, M."],["dc.contributor.author","Orlando, E."],["dc.contributor.author","Ormes, J. F."],["dc.contributor.author","Paneque, D."],["dc.contributor.author","Pei, Z."],["dc.contributor.author","Persic, M."],["dc.contributor.author","Pesce-Rollins, M."],["dc.contributor.author","Pillera, R."],["dc.contributor.author","Poon, H."],["dc.contributor.author","Porter, T. A."],["dc.contributor.author","Principe, G."],["dc.contributor.author","Rainò, S."],["dc.contributor.author","Rando, R."],["dc.contributor.author","Rani, B."],["dc.contributor.author","Razzano, M."],["dc.contributor.author","Razzaque, S."],["dc.contributor.author","Reimer, A."],["dc.contributor.author","Reimer, O."],["dc.contributor.author","Reposeur, T."],["dc.contributor.author","Sánchez-Conde, M."],["dc.contributor.author","Saz Parkinson, P. M."],["dc.contributor.author","Scotton, L."],["dc.contributor.author","Serini, D."],["dc.contributor.author","Sgrò, C."],["dc.contributor.author","Siskind, E. J."],["dc.contributor.author","Spandre, G."],["dc.contributor.author","Spinelli, P."],["dc.contributor.author","Sueoka, K."],["dc.contributor.author","Suson, D. J."],["dc.contributor.author","Tajima, H."],["dc.contributor.author","Tak, D."],["dc.contributor.author","Thayer, J. B."],["dc.contributor.author","Torres, D. F."],["dc.contributor.author","Troja, E."],["dc.contributor.author","Valverde, J."],["dc.contributor.author","Wadiasingh, Z."],["dc.contributor.author","Wood, K."],["dc.contributor.author","Zaharijas, G."],["dc.date.accessioned","2022-07-18T08:45:47Z"],["dc.date.available","2022-07-18T08:45:47Z"],["dc.date.issued","2022-07-14"],["dc.date.updated","2022-07-16T02:37:07Z"],["dc.description.abstract","AbstractCosmic rays are mostly composed of protons accelerated to relativistic speeds. When those protons encounter interstellar material, they produce neutral pions, which in turn decay into gamma-rays. This offers a compelling way to identify the acceleration sites of protons. A characteristic hadronic spectrum, with a low-energy break around 200 MeV, was detected in the gamma-ray spectra of four supernova remnants (SNRs), IC 443, W44, W49B, and W51C, with the Fermi Large Area Telescope. This detection provided direct evidence that cosmic-ray protons are (re-)accelerated in SNRs. Here, we present a comprehensive search for low-energy spectral breaks among 311 4FGL catalog sources located within 5° from the Galactic plane. Using 8 yr of data from the Fermi Large Area Telescope between 50 MeV and 1 GeV, we find and present the spectral characteristics of 56 sources with a spectral break confirmed by a thorough study of systematic uncertainty. Our population of sources includes 13 SNRs for which the proton–proton interaction is enhanced by the dense target material; the high-mass gamma-ray binary LS I+61 303; the colliding wind binary η Carinae; and the Cygnus star-forming region. This analysis better constrains the origin of the gamma-ray emission and enlarges our view to potential new cosmic-ray acceleration sites."],["dc.description.sponsorship","Agence Nationale de la Recherche (ANR)https://doi.org/10.13039/501100001665"],["dc.identifier.doi","10.3847/1538-4357/ac704f"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/112492"],["dc.language.iso","en"],["dc.relation.eissn","1538-4357"],["dc.relation.issn","0004-637X"],["dc.rights","CC BY 4.0"],["dc.rights.uri","http://creativecommons.org/licenses/by/4.0/"],["dc.title","Search for New Cosmic-Ray Acceleration Sites within the 4FGL Catalog Galactic Plane Sources"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]