Hoppert, Michael

[["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Geochimica et Cosmochimica Acta"],["dc.bibliographiccitation.volume","74"],["dc.contributor.author","Hoppert, Michael"],["dc.contributor.author","Dreier, Anne"],["dc.contributor.author","Heller, C."],["dc.contributor.author","Kokoschka, Sebastian"],["dc.contributor.author","Krukenberg, Viola"],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Taviani, Marco"],["dc.contributor.author","Wrede, Christoph"],["dc.date.accessioned","2018-11-07T08:42:40Z"],["dc.date.available","2018-11-07T08:42:40Z"],["dc.date.issued","2010"],["dc.identifier.isi","000283941401208"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19753"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.publisher.place","Oxford"],["dc.relation.conference","Conference on Goldschmidt 2010 - Earth, Energy, and the Environment"],["dc.relation.eventlocation","Knoxville, TN"],["dc.title","Microbial activity in terrestrial mud volcanoes from the Northern Apennines"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","13"],["dc.bibliographiccitation.journal","Geochimica et Cosmochimica Acta"],["dc.bibliographiccitation.volume","73"],["dc.contributor.author","Heller, C."],["dc.contributor.author","Blumenberg, Martin"],["dc.contributor.author","Dreier, Anne"],["dc.contributor.author","Wrede, Christoph"],["dc.contributor.author","Zilla, Thomas"],["dc.contributor.author","Kokoschka, Sebastian"],["dc.contributor.author","Heim, C."],["dc.contributor.author","Hoppert, Michael"],["dc.contributor.author","Taviani, M."],["dc.contributor.author","Reitner, Joachim"],["dc.date.accessioned","2018-11-07T08:29:13Z"],["dc.date.available","2018-11-07T08:29:13Z"],["dc.date.issued","2009"],["dc.identifier.isi","000267229901266"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/16598"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Pergamon-elsevier Science Ltd"],["dc.publisher.place","Oxford"],["dc.relation.conference","19th Annual VM Goldschmidt Conference"],["dc.relation.eventlocation","Davos, SWITZERLAND"],["dc.title","First results of geo- and biochemical analyses of terrestrial methane-emittingen mud volcanoes in Italy"],["dc.type","conference_abstract"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","793"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Paläontologische Zeitschrift"],["dc.bibliographiccitation.lastpage","807"],["dc.bibliographiccitation.volume","95"],["dc.contributor.author","Somoza, Luis"],["dc.contributor.author","Rueda, José Luis"],["dc.contributor.author","González, Francisco J."],["dc.contributor.author","Rincón-Tomás, Blanca"],["dc.contributor.author","Medialdea, Teresa"],["dc.contributor.author","Sánchez-Guillamón, Olga"],["dc.contributor.author","Hoppert, Michael"],["dc.contributor.author","Vázquez, Juan T."],["dc.contributor.author","Madureira, Pedro"],["dc.contributor.author","Santofimia, Esther"],["dc.contributor.author","Reitner, Joachim"],["dc.date.accessioned","2022-01-11T14:05:30Z"],["dc.date.available","2022-01-11T14:05:30Z"],["dc.date.issued","2021"],["dc.description.abstract","Abstract Extensive beds of the deep-sea mussel Bathymodiolus mauritanicus (currently also known as Gigantidas mauritanicus ) linked to active cold seeps related to fissure-like activity on Al Gacel mud volcano, Gulf of Cádiz, were filmed and sampled for the first time during the oceanographic expedition SUBVENT-2 aboard R/V Sarmiento de Gamboa. Al Gacel mud volcano is one of up to 80 fluid venting submarine structures (mud volcanoes and mud volcano/diapir complexes) identified in the Gulf of Cádiz as result of explosive venting of hydrocarbon-enriched fluids sourced from deep seated reservoirs. This mud volcano is a cone-shaped edifice, 107 m high, 944 m in diameter constituted by mud breccias and, partially covered by pavements of seep carbonates. Extensive beds of this deep-sea mussel were detected at the northern flank at 810–815 m water depth associated with bacterial mats around intermittent buoyant vertical bubble methane plumes. High methane concentrations were measured in the water column above living mussel beds. Other chemosymbiotic species ( Siboglinum sp., Solemya elarraichensis , Isorropodon sp., Thyasira vulcolutre and Lucinoma asapheus ) were also found in different parts of Al Gacel mud volcano. Al Gacel mud volcano may currently represent one of the most active mud volcanoes in the Gulf of Cádiz, delivering significant amounts of thermogenic hydrocarbon fluids which contribute to foster the extensive chemosynthesis-based communities detected. This finding is of paramount importance for linking extremophile bivalve populations along the North Atlantic, including cold seeps of the Gulf of México, hydrothermal vents of the Mid-Atlantic Ridge and now, detailed documented at the Gulf of Cádiz."],["dc.description.abstract","Abstract Extensive beds of the deep-sea mussel Bathymodiolus mauritanicus (currently also known as Gigantidas mauritanicus ) linked to active cold seeps related to fissure-like activity on Al Gacel mud volcano, Gulf of Cádiz, were filmed and sampled for the first time during the oceanographic expedition SUBVENT-2 aboard R/V Sarmiento de Gamboa. Al Gacel mud volcano is one of up to 80 fluid venting submarine structures (mud volcanoes and mud volcano/diapir complexes) identified in the Gulf of Cádiz as result of explosive venting of hydrocarbon-enriched fluids sourced from deep seated reservoirs. This mud volcano is a cone-shaped edifice, 107 m high, 944 m in diameter constituted by mud breccias and, partially covered by pavements of seep carbonates. Extensive beds of this deep-sea mussel were detected at the northern flank at 810–815 m water depth associated with bacterial mats around intermittent buoyant vertical bubble methane plumes. High methane concentrations were measured in the water column above living mussel beds. Other chemosymbiotic species ( Siboglinum sp., Solemya elarraichensis , Isorropodon sp., Thyasira vulcolutre and Lucinoma asapheus ) were also found in different parts of Al Gacel mud volcano. Al Gacel mud volcano may currently represent one of the most active mud volcanoes in the Gulf of Cádiz, delivering significant amounts of thermogenic hydrocarbon fluids which contribute to foster the extensive chemosynthesis-based communities detected. This finding is of paramount importance for linking extremophile bivalve populations along the North Atlantic, including cold seeps of the Gulf of México, hydrothermal vents of the Mid-Atlantic Ridge and now, detailed documented at the Gulf of Cádiz."],["dc.identifier.doi","10.1007/s12542-021-00594-3"],["dc.identifier.pii","594"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/97676"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-507"],["dc.relation.eissn","1867-6812"],["dc.relation.issn","0031-0220"],["dc.title","A relict oasis of living deep-sea mussels Bathymodiolus and microbial-mediated seep carbonates at newly-discovered active cold seeps in the Gulf of Cádiz, NE Atlantic Ocean"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","UNSP 102972"],["dc.bibliographiccitation.journal","Archaea"],["dc.contributor.author","Wrede, Christoph"],["dc.contributor.author","Kokoschka, Sebastian"],["dc.contributor.author","Dreier, Anne"],["dc.contributor.author","Heller, Christina"],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Hoppert, Michael"],["dc.date.accessioned","2018-11-07T09:29:51Z"],["dc.date.available","2018-11-07T09:29:51Z"],["dc.date.issued","2013"],["dc.description.abstract","The syntrophic community between anaerobic methanotrophic archaea and sulfate reducing bacteria forms thick, black layers within multi-layered microbial mats in chimney-like carbonate concretions of methane seeps located in the Black Sea Crimean shelf. The microbial consortium conducts anaerobic oxidation of methane, which leads to the formation of mainly two biomineral by-products, calcium carbonates and iron sulfides, building up these chimneys. Iron sulfides are generated by the microbial reduction of oxidized sulfur compounds in the microbial mats. Here we show that sulfate reducing bacteria deposit biogenic iron sulfides extra-and intracellularly, the latter in magnetosome-like chains. These chains appear to be stable after cell lysis and tend to attach to cell debris within the microbial mat. The particles may be important nuclei for larger iron sulfide mineral aggregates."],["dc.identifier.doi","10.1155/2013/102972"],["dc.identifier.isi","000320810200001"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10612"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31151"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1472-3646"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.rights","CC BY 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/3.0/"],["dc.title","Deposition of Biogenic Iron Minerals in a Methane Oxidizing Microbial Mat"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","85"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Microbiological Methods"],["dc.bibliographiccitation.lastpage","91"],["dc.bibliographiccitation.volume","73"],["dc.contributor.author","Wrede, Christoph"],["dc.contributor.author","Heller, Christina"],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Hoppert, Michael"],["dc.date.accessioned","2018-11-07T11:15:38Z"],["dc.date.available","2018-11-07T11:15:38Z"],["dc.date.issued","2008"],["dc.description.abstract","In several fields of cell biology, correlative microscopy is applied to compare the structure of objects at high resolution under the electron microscope with low resolution light microscopy images of the same sample. It is, however, difficult to prepare samples and marker systems that are applicable for both microscopic techniques for the same specimen at the same time. In our studies, we used microbial mats from Cold Seep communities for a simple and rapid correlative microscopy method. The mats consist of bacterial and archaeal microorganisms, coupling reverse methanogenesis to the reduction of sulfate. The reverse methanogenic pathway also generates carbonates that precipitate inside the mat and may be the main reason for the formation of a microbial reef. The mat shows highly differentiated aggregates of various organisms, tightly interconnected by extracellular polysaccharides. In order to investigate the role of EPS as adhesive mucilage for the biofilm and as a precipitation matrix for carbonate minerals, samples were embedded in a hydrophilic resin (Lowicryl K4 M). Sections were suitable for light as well as electron microscopy in combination with lectins, either labeled with a fluorescent marker or with colloidal gold. This allows lectin mapping at low resolution for light microscopy in direct comparison with a highly resolved electron microscopic image.(c) 2008 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.mimet.2008.02.020"],["dc.identifier.isi","000256165200002"],["dc.identifier.pmid","18405985"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/54408"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0167-7012"],["dc.title","Correlative light/electron microscopy for the investigation of microbial mats from Black Sea Cold Seeps"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","20394"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Arif, Sania"],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Hoppert, Michael"],["dc.date.accessioned","2020-01-10T10:23:29Z"],["dc.date.available","2020-01-10T10:23:29Z"],["dc.date.issued","2019"],["dc.description.abstract","Organic-rich laminated shales and limestones from the Monte San Giorgio (Lugano Prealps, Switzerland) are known as famous fossil lagerstätten for excellently preserved fossils from the Middle Triassic Period. The various bituminous shales from Monte San Giorgio are thermally immature and rich in diverse organic compounds, which provide unique substrates for active soil microbial communities. We selected the Cava superior beds of the Acqua del Ghiffo site for this study. To investigate its microbial structure and diversity, contig assembly, Operational Taxonomic Units (OTUs) clustering, and rarefaction analysis were performed for bacterial 16S rDNA preparations from bituminous and non-bituminous limestone strata with the MetaAmp pipeline. Principal coordinates analysis shows that the microbial communities from the bituminous strata differ significantly from limestone samples (P < 0.05 Unifrac weighted). Moreover, metagenomic tools could also be used effectively to analyze the microbial communities shift during enrichment in specific growth media. In the nutrient-rich media, one or few taxa, mainly Proteobacteria and Firmicutes, were enriched which led to the drastic diversity loss while oligotrophic media could enrich many taxa simultaneously and sustain the richness and diversity of the inoculum. Piphillin, METAGENassist and MicrobiomeAnalyst pipeline also predicted that the Monte San Giorgio bituminous shales and oligotrophic enriched microbiomes degrade complex polycyclic aromatic hydrocarbons."],["dc.identifier.doi","10.1038/s41598-019-55955-5"],["dc.identifier.pmid","31892704"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17050"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62784"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.eissn","2045-2322"],["dc.relation.issn","2045-2322"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Composition, Diversity and Functional Analysis of the Modern Microbiome of the Middle Triassic Cava Superiore Beds (Monte San Giorgio, Switzerland)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","559"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Paläontologische Zeitschrift"],["dc.bibliographiccitation.lastpage","561"],["dc.bibliographiccitation.volume","95"],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Duda, Jan-Peter"],["dc.contributor.author","van Zuilen, Mark"],["dc.contributor.author","Zhang, Xingliang"],["dc.contributor.author","Peckmann, Jörn"],["dc.contributor.author","Hoppert, Michael"],["dc.date.accessioned","2022-01-11T14:05:30Z"],["dc.date.available","2022-01-11T14:05:30Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1007/s12542-021-00600-8"],["dc.identifier.pii","600"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/97677"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-507"],["dc.relation.eissn","1867-6812"],["dc.relation.issn","0031-0220"],["dc.title","Special issue: Going Deep—Tracking life processes through time and space"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","219"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","International Journal of Astrobiology"],["dc.bibliographiccitation.lastpage","229"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Rincón-Tomás, Blanca"],["dc.contributor.author","Khonsari, Bahar"],["dc.contributor.author","Mühlen, Dominik"],["dc.contributor.author","Wickbold, Christian"],["dc.contributor.author","Schäfer, Nadine"],["dc.contributor.author","Hause-Reitner, Dorothea"],["dc.contributor.author","Hoppert, Michael"],["dc.contributor.author","Reitner, Joachim"],["dc.date.accessioned","2020-12-10T15:22:23Z"],["dc.date.available","2020-12-10T15:22:23Z"],["dc.date.issued","2016"],["dc.description.abstract","Carbonate minerals such as dolomite, kutnahorite or rhodochrosite are frequently, but not exclusively generated by microbial processes. In recent anoxic sediments, Mn(II)carbonate minerals (e.g. rhodochrosite, kutnahorite) derive mainly from the reduction of Mn(IV) compounds by anaerobic respiration. The formation of huge manganese-rich (carbonate) deposits requires effective manganese redox cycling in an oxygenated atmosphere. However, putative anaerobic pathways such as microbial nitrate-dependent manganese oxidation, anoxygenic photosynthesis and oxidation in ultraviolet light may facilitate manganese cycling even in an early Archean environment, without the availability of oxygen. In addition, manganese carbonates precipitate by microbially induced processes without change of the oxidation state, e.g. by pH shift. Hence, there are several ways how these minerals could have been formed biogenically and deposited in Precambrian sediments. We will summarize microbially induced manganese carbonate deposition in the presence and absence of atmospheric oxygen and we will make some considerations about the biogenic deposition of manganese carbonates in early Archean settings."],["dc.identifier.doi","10.1017/S1473550416000264"],["dc.identifier.eissn","1475-3006"],["dc.identifier.isi","000381033400006"],["dc.identifier.issn","1473-5504"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/73384"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1475-3006"],["dc.relation.issn","1473-5504"],["dc.title","Manganese carbonates as possible biogenic relics in Archean settings"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","210"],["dc.bibliographiccitation.journal","Sedimentary Geology"],["dc.bibliographiccitation.lastpage","219"],["dc.bibliographiccitation.volume","263"],["dc.contributor.author","Wrede, Christoph"],["dc.contributor.author","Brady, Silja"],["dc.contributor.author","Rockstroh, Stephanie"],["dc.contributor.author","Dreier, Anne"],["dc.contributor.author","Kokoschka, Sebastian"],["dc.contributor.author","Heinzelmann, S. M."],["dc.contributor.author","Heller, C."],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Taviani, Marco"],["dc.contributor.author","Daniel, Roy Thomas"],["dc.contributor.author","Hoppert, Michael"],["dc.date.accessioned","2018-11-07T09:09:02Z"],["dc.date.available","2018-11-07T09:09:02Z"],["dc.date.issued","2012"],["dc.description.abstract","Methane oxidizing prokaryotes are ubiquitous in oxic and anoxic habitats wherever C-1-compounds are present. Thus, methane saturated mud volcano fluids should be a preferred habitat of methane consuming prokaryotes, using the readily available electron donors. In order to understand the relevance of methane as a carbon and energy source in mud volcano communities, we investigate the diversity of prokaryotic organisms involved in oxidation of methane in fluid samples from the Salse di Nirano mud volcano field situated in the Northern Apennines. Cell counts were at approximately 0.7 x 10(6) microbial cells/ml. A fraction of the microbial biomass was identified as ANME (anaerobic methanotroph) archaea by fluorescence in situ hybridization (FISH) analysis. They are associated in densely colonized flakes, of some tens of mu m in diameter, embedded in a hyaline matrix. Diversity analysis based on the 16S rDNA genes, retrieved from amplified and cloned environmental DNA, revealed a high proportion of archaea, involved in anaerobic oxidation of methane (AOM). Aerobic methane-oxidizing proteobacteria could be highly enriched from mud volcano fluids, indicating the presence of aerobic methanotrophic bacteria, which may contribute to methane oxidation, whenever oxygen is readily available. The results imply that biofilms, dominated by ANME archaea, colonize parts of the mud volcano venting system. (C) 2011 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.sedgeo.2011.06.004"],["dc.identifier.isi","000304851400020"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26172"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0037-0738"],["dc.title","Aerobic and anaerobic methane oxidation in terrestrial mud volcanoes in the Northern Apennines"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.contributor.author","Rincon-Tomas, Blanca"],["dc.contributor.author","Somoza, Luis"],["dc.contributor.author","Sauter, Kathrin"],["dc.contributor.author","Hause-Reitner, Dorothea"],["dc.contributor.author","Madureira, Pedro"],["dc.contributor.author","Schneider, Dominik"],["dc.contributor.author","González, Francisco Javier"],["dc.contributor.author","Medialdea, Teresa"],["dc.contributor.author","Carlsson, Jens"],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Hoppert, Michael"],["dc.date.accessioned","2019-07-22T13:55:37Z"],["dc.date.available","2019-07-22T13:55:37Z"],["dc.date.issued","2019"],["dc.description.abstract","Siboglinid worms were sampled from four mud volcanoes in the Gulf of Cádiz (El Cid MV, Bonjardim MV, Al Gacel MV and Anastasya MV). These invertebrates are characteristic to cold seeps and are known to host chemosynthetic endosymbionts in a dedicated trophosome organ. However, little is known about their tube as a potential niche for other chemosynthetic and non-chemosynthetic microorganisms. Analyses by scanning and transmission electron microscopy showed dense biofilms on the tube in Al Gacel MV and Anastasya MV specimens by prokaryotic cells. Methanotrophic bacteria were the most abundant forming these biofilms as further confirmed by 16S rRNA sequence analysis. Furthermore, elemental analyses with electron microscopy and EDX point to the progressive mineralization of the biofilm and the tube in absence of nutrients. Environmental bacterial and archaeal 16S rRNA sequence libraries revealed abundant microorganisms related to these siboglinid worms and variation in microbial communities among samples. We argue that these differences must be related to variance in seepage activity, as it is the main source of nutrients. Thus, the tube remarkably increases the microbial biomass related to the worms and needs to be incorporated as an important part of the worm’s microbiota. Furthermore, empty tubes may still influence the composition of the active microbial community at those sites."],["dc.identifier.doi","10.7287/peerj.preprints.27730v1"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61812"],["dc.language.iso","en"],["dc.title","New insights into Siboglinidae microbiota - external tube contributes to an increment of the total microbial biomass"],["dc.type","preprint"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]