Quéric, Nadia Valérie

[["dc.bibliographiccitation.artnumber","e0177542"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","PLoS ONE"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Heim, Christine N."],["dc.contributor.author","Quéric, Nadia Valérie"],["dc.contributor.author","Lonescu, Danny"],["dc.contributor.author","Schaefer, Nadine"],["dc.contributor.author","Reitner, Joachim"],["dc.date.accessioned","2018-11-07T10:23:44Z"],["dc.date.available","2018-11-07T10:23:44Z"],["dc.date.issued","2017"],["dc.description.abstract","Stromatolitic iron-rich structures have been reported from many ancient environments and are often described as Frutexites, a cryptic microfossil. Although microbial formation of such structures is likely, a clear relation to a microbial precursor is lacking so far. Here we report recent iron oxidizing biofilms which resemble the ancient Frutexites structures. The living Frutexites-like biofilms were sampled at 160 m depth in the Aspo Hard Rock Laboratory in Sweden. Investigations using microscopy, 454 pyrosequencing, FISH, Raman spectros-copy, biomarker and trace element analysis allowed a detailed view of the structural components of the mineralized biofilm. The most abundant bacterial groups were involved in nitrogen and iron cycling. Furthermore, Archaea are widely distributed in the Frutexites-like biofilm, even though their functional role remains unclear. Biomarker analysis revealed abundant sterols in the biofilm most likely from algal and fungal origins. Our results indicate that the Frutexites-like biofilm was built up by a complex microbial community. The functional role of each community member in the formation of the dendritic structures, as well as their potential relation to fossil Frutexites remains under investigation."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2017"],["dc.identifier.doi","10.1371/journal.pone.0177542"],["dc.identifier.isi","000401672600015"],["dc.identifier.pmid","28542238"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14488"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42518"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Frutexites-like structures formed by iron oxidizing biofilms in the continental subsurface (Aspo Hard Rock Laboratory, Sweden)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","89"],["dc.bibliographiccitation.journal","Ecological Indicators"],["dc.bibliographiccitation.lastpage","102"],["dc.bibliographiccitation.volume","65"],["dc.contributor.author","Soltwedel, Thomas"],["dc.contributor.author","Bauerfeind, Eduard"],["dc.contributor.author","Bergmann, Melanie"],["dc.contributor.author","Bracher, Astrid"],["dc.contributor.author","Budaeva, Nataliya"],["dc.contributor.author","Busch, Kathrin"],["dc.contributor.author","Cherkasheva, Alexandra"],["dc.contributor.author","Fahl, Kirsten"],["dc.contributor.author","Grzelak, Katarzyna"],["dc.contributor.author","Hasemann, Christiane"],["dc.contributor.author","Jacob, Marianne"],["dc.contributor.author","Kraft, Angelina"],["dc.contributor.author","Lalande, Catherine"],["dc.contributor.author","Metfies, Katja"],["dc.contributor.author","Noethig, Eva-Maria"],["dc.contributor.author","Meyer, Kirstin"],["dc.contributor.author","Queric, Nadia-Valerie"],["dc.contributor.author","Schewe, Ingo"],["dc.contributor.author","Wlodarska-Kowalczuk, Maria"],["dc.contributor.author","Klages, Michael"],["dc.date.accessioned","2018-11-07T10:12:58Z"],["dc.date.available","2018-11-07T10:12:58Z"],["dc.date.issued","2016"],["dc.description.abstract","Time-series studies of arctic marine ecosystems are rare. This is not surprising since polar regions are largely only accessible by means of expensive modern infrastructure and instrumentation. In 1999, the Alfred Wegener Institute, Helmholtz-Centre for Polar and Marine Research (AWI) established the LTER (Long-Term Ecological Research) observatory HAUSGARTEN crossing the Fram Strait at about 79 degrees N. Multidisciplinary investigations covering all parts of the open-ocean ecosystem are carried out at a total of 21 permanent sampling sites in water depths ranging between 250 and 5500 m. From the outset, repeated sampling in the water column and at the deep seafloor during regular expeditions in summer months was complemented by continuous year-round sampling and sensing using autonomous instruments in anchored devices (i.e., moorings and free-falling systems). The central HAUSGARTEN station at 2500 m water depth in the eastern Fram Strait serves as an experimental area for unique biological in situ experiments at the seafloor, simulating various scenarios in changing environmental settings. Long-term ecological research at the HAUSGARTEN observatory revealed a number of interesting temporal trends in numerous biological variables from the pelagic system to the deep seafloor. Contrary to common intuition, the entire ecosystem responded exceptionally fast to environmental changes in the upper water column. Major variations were associated with a Warm-Water-Anomaly evident in surface waters in eastern parts of the Fram Strait between 2005 and 2008. However, even after 15 years of intense time-series work at HAUSGARTEN, we cannot yet predict with complete certainty whether these trends indicate lasting alterations due to anthropologically-induced global environmental changes of the system, or whether they reflect natural variability on multiyear time-scales, for example, in relation to decadal oscillatory atmospheric processes. (C) 2015 The Authors. Published by Elsevier Ltd."],["dc.identifier.doi","10.1016/j.ecolind.2015.10.001"],["dc.identifier.isi","000388157700008"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14000"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40341"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1872-7034"],["dc.relation.issn","1470-160X"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.rights","CC BY-NC-ND 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by-nc-nd/4.0/"],["dc.title","Natural variability or anthropogenically-induced variation? Insights from 15 years of multidisciplinary observations at the arctic marine LTER site HAUSGARTEN"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","221"],["dc.bibliographiccitation.lastpage","231"],["dc.bibliographiccitation.seriesnr","131"],["dc.contributor.author","Kurz, Jens"],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Heim, Christine N."],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Quéric, Nadia Valérie"],["dc.contributor.author","Thiel, Volker"],["dc.contributor.editor","Reitner, Joachim"],["dc.contributor.editor","Quéric, Nadia Valérie"],["dc.contributor.editor","Arp, Gernot"],["dc.date.accessioned","2019-11-06T10:08:00Z"],["dc.date.available","2019-11-06T10:08:00Z"],["dc.date.issued","2011"],["dc.description.abstract","The Äspö Hard Rock Laboratory (Äspö HRL) is a tunnel located near Oskarshamn in the southeast of Sweden, that serves as a testing environment for the disposal of nuclear waste. The Äspö HRL hosts and makes accessible a wide spectrum of microbially driven subsurface ecosystems (Pedersen 1997)."],["dc.identifier.doi","10.1007/978-3-642-10415-2_15"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62569"],["dc.language.iso","en"],["dc.publisher","Springer"],["dc.publisher.place","Berlin"],["dc.relation.crisseries","Lecture Notes in Earth Sciences"],["dc.relation.doi","10.1007/978-3-642-10415-2"],["dc.relation.isbn","978-3-642-10414-5"],["dc.relation.isbn","978-3-642-10415-2"],["dc.relation.ispartof","Advances in Stromatolite Geobiology"],["dc.relation.ispartofseries","Lecture Notes in Earth Sciences;131"],["dc.relation.issn","0930-0317"],["dc.title","Trace Element and Biomarker Signatures in Iron-Precipitating Microbial Mats from the Tunnel of Äspö (Sweden)"],["dc.type","book_chapter"],["dc.type.internalPublication","yes"],["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","323"],["dc.bibliographiccitation.journal","Journal of Earth Science"],["dc.bibliographiccitation.lastpage","324"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Leefmann, Tim"],["dc.contributor.author","Heim, Christine N."],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Quéric, Nadia Valérie"],["dc.contributor.author","Hansen, Bent Tauber"],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Thiel, Volker"],["dc.contributor.author","Lausmaa, Jukka"],["dc.contributor.author","Sjovall, Peter"],["dc.date.accessioned","2018-11-07T08:42:49Z"],["dc.date.available","2018-11-07T08:42:49Z"],["dc.date.issued","2010"],["dc.identifier.isi","000278830800098"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19793"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","China Univ Geosciences"],["dc.publisher.place","Wuhan"],["dc.relation.conference","International Conference on Geobiology"],["dc.relation.eventlocation","Wuhan, PEOPLES R CHINA"],["dc.relation.issn","1674-487X"],["dc.title","Biosignatures of Mineralizing Microbial Mats in a Deep Biosphere Environment"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","380"],["dc.bibliographiccitation.issue","3-4"],["dc.bibliographiccitation.journal","Geomicrobiology Journal"],["dc.bibliographiccitation.lastpage","393"],["dc.bibliographiccitation.volume","32"],["dc.contributor.author","Wilke, Robin N."],["dc.contributor.author","Quéric, Nadia Valérie"],["dc.contributor.author","Hoppert, Michael"],["dc.contributor.author","Heller, C."],["dc.contributor.author","Schropp, A."],["dc.contributor.author","Schroer, C. G."],["dc.contributor.author","Burghammer, Manfred"],["dc.contributor.author","Salditt, Tim"],["dc.contributor.author","Reitner, Joachim"],["dc.date.accessioned","2017-09-07T11:44:30Z"],["dc.date.available","2017-09-07T11:44:30Z"],["dc.date.issued","2015"],["dc.description.abstract","Modern scanning X-ray microscopy can help to unravel the spatial context between biotic and abiotic compounds of geobiological assemblies with the aim to finally link chemical pathways to biological activities at the nanometre scale. This work presents some multi-modal imaging techniques provided by hard X-ray microscopes at synchrotron radiation sources to address analytical needs in geobiological research. Using the examples of 1\\) a calcified basal skeleton of the demosponge Astrosclera willeyana, 2\\) an anaerobic methane-oxidizing microbial mat and 3\\) a bacterial sulfur-oxidizing consortium, we illustrate the potential of scanning X-ray fluorescence and scanning transmission X-ray microscopy, and a novel quantitative approach of ptychographic imaging at single cell level."],["dc.identifier.doi","10.1080/01490451.2014.908982"],["dc.identifier.gro","3141938"],["dc.identifier.isi","000352349600016"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/2746"],["dc.language.iso","en"],["dc.notes.intern","WoS Import 2017-03-10"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","PUB_WoS_Import"],["dc.relation.eissn","1521-0529"],["dc.relation.issn","0149-0451"],["dc.relation.orgunit","Institut für Röntgenphysik"],["dc.relation.workinggroup","RG Salditt (Structure of Biomolecular Assemblies and X-Ray Physics)"],["dc.subject.gro","x-ray imaging"],["dc.subject.gro","x-ray scattering"],["dc.title","Scanning Hard X-ray Microscopy Imaging Modalities for Geobiological Samples"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","231"],["dc.bibliographiccitation.issue","3-4"],["dc.bibliographiccitation.journal","Geomicrobiology Journal"],["dc.bibliographiccitation.lastpage","242"],["dc.bibliographiccitation.volume","32"],["dc.contributor.author","Schaefer, Nadine"],["dc.contributor.author","Schmidt, Burkhard C."],["dc.contributor.author","Quéric, Nadia Valérie"],["dc.contributor.author","Roering, Birgit"],["dc.contributor.author","Reitner, Joachim"],["dc.date.accessioned","2018-11-07T09:59:34Z"],["dc.date.available","2018-11-07T09:59:34Z"],["dc.date.issued","2015"],["dc.description.abstract","Palaeoproterozoic grano-dioritic rocks of the island of aspo exhibit several mineralized fracture generations mainly filled by quartz, calcite, fluorite and/or epidote. Manganese-rich calcite fractures of probably Palaeozoic age are related to younger, possibly Pleistocene/Holocene cracks formed during the last ice age and successive crustal uplift, in contact to the host rock, which are sometimes associated with organic matter. Signals of organic molecules could be gained on the corresponding phase boundaries with Raman spectroscopy, likewise HPLC and HPAE-PAD reveal the presence of carbohydrates and amino acids in bulk rock samples. It is supposed that most of the preserved organic matter is related with thin conditioning films. Extracted bacterial and fungal DNA from the grano-dioritic rocks indicates still active microbial activity in fracture micro-niches."],["dc.description.sponsorship","German Research Foundation [DFG - FOR 571, 48, Re 665/27-3]"],["dc.identifier.doi","10.1080/01490451.2014.911992"],["dc.identifier.isi","000352349600005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/37620"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1521-0529"],["dc.relation.issn","0149-0451"],["dc.title","Organic Compounds and Conditioning Films Within Deep Rock Fractures of the aspo Hard Rock Laboratory, Sweden"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","36"],["dc.bibliographiccitation.journal","Sedimentary Geology"],["dc.bibliographiccitation.lastpage","44"],["dc.bibliographiccitation.volume","263"],["dc.contributor.author","Queric, Nadia-Valerie"],["dc.contributor.author","Soltwedel, Thomas"],["dc.date.accessioned","2018-11-07T09:09:01Z"],["dc.date.available","2018-11-07T09:09:01Z"],["dc.date.issued","2012"],["dc.description.abstract","The Ardencaple Canyon, emanating from the Eastern Greenland continental rise over a distance of about 200 km towards the Greenland Basin, was investigated to determine the effect of enhanced down-slope transport mechanisms on deep-sea benthic prokaryotic communities. The concentration of viable bacterial cells (Live/Dead (R) BacLight) and prokaryotic incorporation rates (H-3-thymidine, C-14-leucine) increased with increasing distance from the continental shelf. Multidimensional scaling (MDS) results from terminal restriction fragment length polymorphism (T-RFLP) analysis indicated a spatial coherence between the benthic bacterial community structure, prokaryotic incorporation rates, water content, protein concentration and the total organic matter in the sediments. The community complexity in sediments at 4-5 cm depth was lower in the central parts of the channel compared with the northern and the southern levees, while richness in surface sediments of all stations was similar. Lacking any clear indications for a recent mass sediment transport or funneled shelf drainage flows, high similarities between bacterial assemblages in sediments along the canyon course may thus be governed by a combination of an ice-edge induced particle flux, episodic down-slope and canyon-guided transport mechanisms. (C) 2011 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.sedgeo.2011.10.004"],["dc.identifier.isi","000304851400005"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26167"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1879-0968"],["dc.relation.issn","0037-0738"],["dc.title","Benthic prokaryotic community dynamics along the Ardencaple Canyon, Western Greenland Sea"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","87"],["dc.bibliographiccitation.journal","Marine Ecology Progress Series"],["dc.bibliographiccitation.lastpage","95"],["dc.bibliographiccitation.volume","370"],["dc.contributor.author","Queric, Nadia-Valerie"],["dc.contributor.author","Arrieta, Jesus M."],["dc.contributor.author","Soltwedel, Thomas"],["dc.contributor.author","Arntz, Wolf E."],["dc.date.accessioned","2018-11-07T11:20:21Z"],["dc.date.available","2018-11-07T11:20:21Z"],["dc.date.issued","2008"],["dc.description.abstract","The sedimentary microenvironment of a sessile epibenthic deep-sea species, the small demosponge Tentorium semisuberites, has been investigated to determine its effect on the distribution, physiology and community structure of benthic bacteria and archaea. The upper sediment layers (0 to 2 cm) in the immediate sponge vicinity were characterized by an increased bacterial colonisation with cell abundances on average 3 times higher than those in reference sediments. Similar results were obtained for bacterial secondary production, measured by simultaneous incorporation of the radioactive-labeled substrates H-3-thymidine and C-14-leucine. Our data show a high heterogeneity of deep-sea sediments with a pronounced patchy distribution of particulate organic carbon (POC), and a significant enrichment of POC in the sediments next to T semisuberites. Cell-specific H-3-thymidine and C-14-leucine incorporation rates indicate that the quality rather than the quantity of POC around sponges may lead to the observed increase in cell abundances and protein synthesis. Terminal restriction fragment length polymorphism (T-RFLP) analysis revealed that the sponges support a specific benthic bacterial and archaeal community with some unique OTUs (Operational Taxonomic Units), while other OTUs were entirely missing from its surrounding microenvironment. Our data indicate that the small demosponge T semisuberites causes highly productive patches as hot spots of biochemical cycling, potentially increasing habitat heterogeneity in deep-sea sediments."],["dc.identifier.doi","10.3354/meps07582"],["dc.identifier.isi","000261229600007"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/55515"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Inter-research"],["dc.relation.issn","0171-8630"],["dc.title","Prokaryotic community dynamics in the sedimentary microenvironment of the demosponge Tentorium semisuberites from deep Arctic waters"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]