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  • 1
    Online Resource
    Online Resource
    Berlin, Heidelberg :Springer Berlin / Heidelberg,
    Keywords: Diagenesis-Cold Regions. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (211 pages)
    Edition: 1st ed.
    ISBN: 9783540368496
    Series Statement: Lecture Notes in Earth Sciences Series ; v.109
    DDC: 577.51
    Language: English
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  • 2
    Online Resource
    Online Resource
    Berlin, Heidelberg :Springer Berlin / Heidelberg,
    Keywords: Biochemistry. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (511 pages)
    Edition: 1st ed.
    ISBN: 9783540775980
    Series Statement: Erlangen Earth Conference Series
    DDC: 577.51
    Language: English
    Note: Intro -- The endolithic guild: an ecological framework for residential cavities in hard substrates -- Evolutionary implications of an exceptionally preserved Carboniferous microboring assemblage in the Buckhorn Asphalt lagerstätte (Oklahoma, USA) -- Enigmatic organisms preserved in early Ordovician macroborings, western Utah, USA -- The boring microflora in modern coral reef ecosystems: a review of its roles -- The trace Rhopalia clavigera isp. n. reflects the development of its maker Eugomontia sacculata Kornmann, 1960 -- Colonisation and bioerosion of marine bivalve shells from the Baltic Sea by euendolithic cyanobacteria: an experimental study -- The medium is the message: imaging a complex microboring ( Pyrodendrina cupra igen. n., isp. n.) from the early Paleozoic of Anticosti Island, Canada -- Micro-computed tomography for studies on Entobia : transparent substrate versus modern technology -- A history of sponge erosion: from past myths and hypotheses to recent approaches -- Substratum microtexture affects the boring pattern of Cliona albimarginata (Clionaidae, Demospongiae) -- Two new dwarf Entobia ichnospecies in a diverse aphotic ichnocoenosis (Pleistocene / Rhodes, Greece) -- Borings, bodies and ghosts: spicules of the endolithic sponge Aka akis sp. nov. within the boring Entobia cretacea , Cretaceous, England -- Role of polychaetes in bioerosion of coral substrates -- Parapholas quadrizonata (Spengler, 1792), dominating dead-coral boring bivalve from the Maldives, Indian Ocean -- Echinometrid sea urchins, their trophic styles and corresponding bioerosion -- Boring a mobile domicile: an alternative to the conchicolous life habit -- Biogeographical distribution of Hyrrokkin (Rosalinidae, Foraminifera) and its host-specific morphological and textural trace variability. , Endolithic sponge versus terebratulid brachiopod, Pleistocene, Italy: accidental symbiosis, bioclaustration and deformity -- Micro-bioerosion in volcanic glass: extending the ichnofossil record to Archaean basaltic crust -- Microbial bioerosion of bone - a review -- Xylic substrates at the fossilisation barrier: oak trunks ( Quercus sp .) in the Holocene sediments of the Labe River, Czech Republic -- Trace fossil assemblages on Miocene rocky shores of southern Iberia -- Role of bioerosion in taphonomy: effect of predatory drillholes on preservation of mollusc shells -- An online bibliography of bioerosion references -- Index.
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  • 3
    Book
    Book
    Berlin : Springer
    Keywords: Geomicrobiology ; Erosion ; Aufsatzsammlung ; Bioerosion ; Meeressediment ; Fossile Meerestiere ; Carbonatgestein ; Erosion ; Benthos ; Biologische Aktivität ; Meeressediment ; Bohrloch
    Type of Medium: Book
    Pages: XV, 499 S. , Ill., Tab., graph. Darst.
    ISBN: 3540775978 , 9783540775973
    Series Statement: Erlangen earth conference series
    DDC: 579/.1757
    RVK:
    Language: English
    Note: Enth. Literaturangaben und Index
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  • 4
    Publication Date: 2023-01-15
    Description: Physiological sensitivity of cold‐water corals to ocean change is far less understood than of tropical corals and very little is known about the impacts of ocean acidification and warming on degradative processes of dead coral framework. In a 13‐month laboratory experiment, we examined the interactive effects of gradually increasing temperature and pCO2 levels on survival, growth, and respiration of two prominent color morphotypes (colormorphs) of the framework‐forming cold‐water coral Lophelia pertusa, as well as bioerosion and dissolution of dead framework. Calcification rates tended to increase with warming, showing temperature optima at ~ 14°C (white colormorph) and 10–12°C (orange colormorph) and decreased with increasing pCO2. Net dissolution occurred at aragonite undersaturation (ΩAr 〈 1) at ~ 1000 μatm pCO2. Under combined warming and acidification, the negative effects of acidification on growth were initially mitigated, but at ~ 1600 μatm dissolution prevailed. Respiration rates increased with warming, more strongly in orange corals, while acidification slightly suppressed respiration. Calcification and respiration rates as well as polyp mortality were consistently higher in orange corals. Mortality increased considerably at 14–15°C in both colormorphs. Bioerosion/dissolution of dead framework was not affected by warming alone but was significantly enhanced by acidification. While live corals may cope with intermediate levels of elevated pCO2 and temperature, long‐term impacts beyond levels projected for the end of this century will likely lead to skeletal dissolution and increased mortality. Our findings further suggest that acidification causes accelerated degradation of dead framework even at aragonite saturated conditions, which will eventually compromise the structural integrity of cold‐water coral reefs.
    Description: Bundesministerium für Bildung und Forschung http://dx.doi.org/10.13039/501100002347
    Description: Deutsche Forschungsgemeinschaft http://dx.doi.org/10.13039/501100001659
    Description: Marine Research in Ireland
    Description: French National Research Agency http://dx.doi.org/10.13039/501100001665
    Keywords: ddc:577.7 ; cold-water corals ; ocean change ; laboratory experiments ; framwork dissolution ; bioerosion
    Language: English
    Type: doc-type:article
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  • 5
    Publication Date: 2023-07-18
    Description: Methane seeps are typified by the formation of authigenic carbonates, many of which exhibit corrosion surfaces and secondary porosity believed to be caused by microbial carbonate dissolution. Aerobic methane oxidation and sulfur oxidation are two processes capable of inducing carbonate corrosion at methane seeps. Although the potential of aerobic methanotrophy to dissolve carbonate was confirmed in laboratory experiments, this process has not been studied in the environment to date. Here, we report on a carbonate corrosion experiment carried out in the REGAB Pockmark, Gabon‐Congo‐Angola passive margin, in which marble cubes were deployed for 2.5 years at two sites (CAB‐B and CAB‐C) with apparent active methane seepage and one site (CAB‐D) without methane seepage. Marble cubes exposed to active seepage (experiment CAB‐C) were found to be affected by a new type of microbioerosion. Based on 16〈italic toggle="no"〉S r〈/italic〉RNA gene analysis, the biofilms adhering to the bioeroded marble mostly consisted of aerobic methanotrophic bacteria, predominantly belonging to the uncultured Hyd24‐01 clade. The presence of abundant 〈sup〉13〈/sup〉C‐depleted lipid biomarkers including fatty acids (〈italic toggle="no"〉n〈/italic〉‐C〈sub〉16:1ω8c〈/sub〉, 〈italic toggle="no"〉n〈/italic〉‐C〈sub〉18:1ω8c〈/sub〉, 〈italic toggle="no"〉n〈/italic〉‐C〈sub〉16:1ω5t〈/sub〉), various 4‐mono‐ and 4,4‐dimethyl sterols, and diplopterol agrees with the dominance of aerobic methanotrophs in the CAB‐C biofilms. Among the lipids of aerobic methanotrophs, the uncommon 4α‐methylcholest‐8(14)‐en‐3β,25‐diol is interpreted to be a specific biomarker for the Hyd24‐01 clade. The combination of textural, genetic, and organic geochemical evidence suggests that aerobic methanotrophs are the main drivers of carbonate dissolution observed in the CAB‐C experiment at the REGAB pockmark.〈/p〉
    Description: Deutscher Akademischer Austauschdienst http://dx.doi.org/10.13039/501100001655
    Keywords: ddc:550 ; carbonate ; corrosion ; lipid biomarker ; methane seep ; methanotrophic bacteria ; microbioerosion
    Language: English
    Type: doc-type:article
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  • 6
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    PANGAEA
    In:  Supplement to: Van Rooij, David; De Mol, Lies; Le Guilloux, E; Wisshak, Max; Huvenne, Veerle A I; Moeremans, R; Henriet, Jean-Pierre (2010): Environmental setting of deep-water oysters in the Bay of Biscay. Deep Sea Research Part I: Oceanographic Research Papers, 57(12), 1561-1572, https://doi.org/10.1016/j.dsr.2010.09.002
    Publication Date: 2023-05-12
    Description: We report the northernmost and deepest known occurrence of deep-water pycnodontine oysters, based on two surveys along the French Atlantic continental margin to the La Chapelle continental slope (2006) and the Guilvinec Canyon (2008). The combined use of multibeam bathymetry, seismic profiling, CTD casts and a remotely operated vehicle (ROV) made it possible to describe the physical habitat and to assess the oceanographic control for the recently described species Neopycnodonte zibrowii. These oysters have been observed in vivo in depths from 540 to 846 m, colonizing overhanging banks or escarpments protruding from steep canyon flanks. Especially in the Bay of Biscay, such physical habitats may only be observed within canyons, where they are created by both long-term turbiditic and contouritic processes. Frequent observations of sand ripples on the seabed indicate the presence of a steady, but enhanced bottom current of about 40 cm/s. The occurrence of oysters also coincides with the interface between the Eastern North Atlantic Water and the Mediterranean Outflow Water. A combination of this water mass mixing, internal tide generation and a strong primary surface productivity may generate an enhanced nutrient flux, which is funnelled through the canyon. When the ideal environmental conditions are met, up to 100 individuals per m² may be observed. These deep-water oysters require a vertical habitat, which is often incompatible with the requirements of other sessile organisms, and are only sparsely distributed along the continental margins. The discovery of these giant oyster banks illustrates the rich biodiversity of deep-sea canyons and their underestimation as true ecosystem hotspots.
    Keywords: B06-02; B08-02; B08-05; B08-06; B08-07; B08-08; B08-09; Bank La Chapelle; Belgica; BG06/12; BG08/13a; BG08/13a-track; CT; CTD/Rosette; CTD01; CTD02; CTD03; CTD04; CTD-RO; Gulf of Biscay; HERMES; HERMIONE; Hotspot Ecosystem Research and Mans Impact On European Seas; Hotspot Ecosystem Research on the Margins of European Seas; Remote operated vehicle; ROV; Underway cruise track measurements
    Type: Dataset
    Format: application/zip, 6 datasets
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  • 7
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    PANGAEA
    In:  Supplement to: Wisshak, Max; Titschack, Jürgen; Kahl, Wolf-Achim; Girod, Peter (2017): Classical and new bioerosion trace fossils in Cretaceous belemnite guards characterised via micro-CT. Fossil Record, 20(2), 173-199, https://doi.org/10.5194/fr-20-173-2017
    Publication Date: 2023-01-13
    Description: The ongoing technical revolution in non-destructive 3D-visualisation via micro-computed tomography (micro-CT) finds a valuable application in the studies of bioerosion trace fossils the three-dimensional architecture of which lies hidden within hard substrates. This technique, in concert with advanced segmentation algorithms, allows a detailed visualisation and targeted morphometric analyses even of those bioerosion traces that are otherwise inaccessible to the widely applied cast-embedding technique, because they are either filled with lithified sediment or cement, or are preserved in inherently insoluble or silicified host substrates, or because they are established type material and should not be altered. In the present contribution selected examples of such cases are illustrated by reference to bioerosion trace fossils preserved in Late Cretaceous belemnite guards from the European Chalk Province. These case studies comprise an analysis of a diverse ichno-assemblage found associated with the lectotype of the microboring Dendrina dendrina Morris, 1851 in a belemnite from the upper Campanian to lower Maastrichtian chalk of Norfolk, England, and the description of two new bioerosion trace fossils with type specimens found in belemnite guards from the lower Campanian limestones of Höver, Germany. The latter are Lapispecus hastatus isp. n., a tubular and occasionally branched macroboring for which a sipunculan or a phoronid trace maker are discussed, and Entobia colaria isp. n., a camerate network formed by an excavating sponge that eroded diagnostic grated apertures at the locations of the presumed inhalant papillae or exhaling pores, adding to or replacing filtering devices that are otherwise made of tissue and spicules. As an added value to the non-destructive visualisation procedure, the processed X-ray micro-CT scans of the studied type material provide 3D-models that may now serve as digitypes that can be studied as digital facsimile without the necessity of consulting the actual type specimens.
    Keywords: File content; File size; Uniform resource locator/link to file
    Type: Dataset
    Format: text/tab-separated-values, 20 data points
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  • 8
    Publication Date: 2023-05-12
    Keywords: B08-06; B08-07; B08-08; B08-09; Belgica; BG08/13a; Calculated; Conductivity; CTD; CTD/Rosette; CTD01; CTD02; CTD03; CTD04; CTD-RO; Date/Time of event; Density, sigma-theta (0); DEPTH, water; Elevation of event; Event label; Gulf of Biscay; HERMES; Hotspot Ecosystem Research on the Margins of European Seas; Latitude of event; Longitude of event; Salinity; Sound velocity in water; Temperature, water; Temperature, water, potential
    Type: Dataset
    Format: text/tab-separated-values, 75306 data points
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  • 9
    Publication Date: 2023-05-12
    Keywords: Belgica; BG08/13a; BG08/13a-track; CT; DATE/TIME; Gulf of Biscay; HERMIONE; Hotspot Ecosystem Research and Mans Impact On European Seas; LATITUDE; LONGITUDE; Underway cruise track measurements; Uniform resource locator/link to raw data file
    Type: Dataset
    Format: text/tab-separated-values, 540 data points
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  • 10
    Publication Date: 2023-05-12
    Keywords: B08-02; Belgica; BG08/13a; DATE/TIME; Gulf of Biscay; HERMIONE; Hotspot Ecosystem Research and Mans Impact On European Seas; LATITUDE; LONGITUDE; Remote operated vehicle; ROV; Uniform resource locator/link to movie; Uniform resource locator/link to raw data file
    Type: Dataset
    Format: text/tab-separated-values, 56 data points
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