Simon, Klaus

[["dc.bibliographiccitation.artnumber","17793"],["dc.bibliographiccitation.journal","Scientific Reports"],["dc.bibliographiccitation.volume","5"],["dc.contributor.author","Genio, Luciana"],["dc.contributor.author","Simon, Klaus"],["dc.contributor.author","Kiel, Steffen"],["dc.contributor.author","Cunha, Marina R."],["dc.date.accessioned","2018-11-07T09:47:36Z"],["dc.date.available","2018-11-07T09:47:36Z"],["dc.date.issued","2015"],["dc.description.abstract","Geochemical markers are being increasingly applied to fundamental questions in population and community ecology in marine habitats because they allow inferences on individuals dispersal, but vital effects, small sample size and instrumental limitation are still challenging particularly in deepsea studies. Here we use shells of the deep-sea bivalve Idas modiolaeformis to assess potential effects of sample storage, mineralogy, and valve orientation on LA-ICPMS measurements. Trace element concentrations of Mg-24, Ca-43, Sr-88, Ba-137, Pb-208, and U-238 are not affected by the two most commonly used storage methods of biologic deep-sea samples (frozen at -20 degrees C and fixed in 95% ethanol); thus combined analysis of differently preserved specimens is possible when the number of individuals is insufficient and distinct sample fixation is needed for multiple purposes. Valve orientation had a strong impact on quantification of trace elements in the calcitic but not in the aragonitic layer of adult shells. Hence, to enable comparisons between adult shells and entirely aragonitic embryonic shells, a reference map of site-specific signatures can potentially be generated using the aragonitic layer of the adult shells. Understanding ontogenetic changes and environmental effects in trace element incorporation is critical before geochemical fingerprinting can be used as a tool for larval dispersal studies in the deep-sea."],["dc.identifier.doi","10.1038/srep17793"],["dc.identifier.isi","000365960900001"],["dc.identifier.pmid","26643064"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/12706"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/35148"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Nature Publishing Group"],["dc.relation.issn","2045-2322"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Effects of sample storage and shell orientation on LA-ICPMS trace element measurements on deep-sea mussels"],["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","77"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Acta Palaeontologica Polonica"],["dc.bibliographiccitation.lastpage","84"],["dc.bibliographiccitation.volume","58"],["dc.contributor.author","Kiel, Steffen"],["dc.contributor.author","Peckmann, Joern"],["dc.contributor.author","Simon, Klaus"],["dc.date.accessioned","2018-11-07T09:27:12Z"],["dc.date.available","2018-11-07T09:27:12Z"],["dc.date.issued","2013"],["dc.description.abstract","Fossil catshark egg capsules, Scyliorhinotheca goederti gen. et sp. nov., are reported from a Late Eocene deep-water methane-seep calcareous deposit in western Washington State, USA. The capsules are preserved three-dimensionally and some show mineralized remnants of the ribbed capsule wall consisting of small globular crystals that are embedded in a microsparitic matrix. The globules are calcitic, but a strontium content of 2400-3000 ppm suggests that they were originally aragonitic. The carbonate enclosing the egg capsules, and the capsule wall itself, show delta C-13 values as low as -36.5 parts per thousand, suggesting that formation was induced by the anaerobic oxidation of methane and hence in an anoxic environment. We put forward the following scenario for the mineralization of the capsule wall: (i) the collagenous capsules experienced a sudden change from oxic to anoxic conditions favouring an increase of alkalinity; (ii) this led to the precipitation of aragonitic globules within the collagenous capsule wall; (iii) subsequently the remaining capsule wall was mineralized by calcite or aragonite; (iv) finally the aragonitic parts of the wall recrystallized to calcite. The unusual globular habit of the early carbonate precipitates apparently represents a taphonomic feature, resulting from mineralization mediated by an organic matrix. Taphonomic processes, however, are at best contributed to an increase of alkalinity, which was mostly driven by methane oxidation at the ancient seep site."],["dc.identifier.doi","10.4202/app.2011.0077"],["dc.identifier.isi","000318462900007"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8569"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/30483"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Inst Paleobiologii Pan"],["dc.relation.issn","0567-7920"],["dc.rights","CC BY 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/3.0/"],["dc.title","Catshark egg capsules from a Late Eocene deep-water methane-seep deposit in western Washington State, USA"],["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"]]