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  • 1
    facet.materialart.
    Unknown
    X-ray diffraction data of powder drilled from the aragonitic shell of a modern common cockle specimen (Cerastoderma edule), collected at the North Sea coast near Hoek van Holland (2022)
    PANGAEA
    Details
    Publication Date: 2023-08-18
    Keywords: Bivalve; Bruker D8 diffractometer; Clumped isotopes; Diffraction angle; EBSD; HvH_C_edule; Intensity, total; micro-XRF; mid-Pliocene warm period; multiproxy; North Sea; North Sea, Hoek van Holland; Oxygen isotopes; paleotemperature proxy; Pliocene; sclerochronology; Southern North Sea; XRD
    Type: Dataset
    Format: text/tab-separated-values, 5378 data points
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  • 2
    facet.materialart.
    Unknown
    X-ray diffraction data of powder drilled from the shell of A. benedeni benedeni specimen SG-125 (2022)
    PANGAEA
    Details
    Publication Date: 2023-08-18
    Description: This dataset contains X-ray diffraction data of powder drilled from the shell of A. benedeni benedeni specimen SG-125. This measurement was carried out in order to determine whether the originally aragonitic shell of this specimen contained any calcite of diagenetic origin. The spectrum of this specimen was compared to that of a modern aragonitic shell measured in-house (XRD_Fresh_Aragonite_Cerastoderma_edule.csv), and a calcite mineral from an external database (RRUFF database, ID R040070; Lafuente et al. 2015). The bivalve shells were collected in 2013 from a shell bed at the top of the Oorderen Member of the Lillo Formation of the Pliocene in Belgium. The collection site was a construction-related temporary outcrop at the Deurganck Dock Lock (now Kieldrecht Lock) in the city of Antwerp, located at 51°16′44″N 4°14′52″E. X-ray diffraction analysis was carried out in spring 2021 at the department of Earth Sciences at Utrecht University, the Netherlands, on a Bruker D8 diffractometer that was calibrated with a corundum crystal. Measurement conditions were as follows: 40 kV voltage, 40 mA current, 1.5418 Å (CuKα) radiation, 0.165 mm divergence slit, 2.5° primary soller slit, no secondary soller slit, 15-70° 2theta measuring range, 0.02° 2theta step-size, 0.85 s counting time, 15 rpm sample rotation. Reported are the angle (in degrees 2theta) and the corresponding intensity (in counts per second).
    Keywords: Antwerpen, Belgium; Bivalve; Bruker D8 diffractometer; Clumped isotopes; Diffraction angle; EBSD; Intensity, total; micro-XRF; mid-Pliocene warm period; multiproxy; North Sea; OUTCROP; Outcrop sample; Oxygen isotopes; paleotemperature proxy; Pliocene; sclerochronology; SG-125; Southern North Sea; XRD
    Type: Dataset
    Format: text/tab-separated-values, 5378 data points
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  • 3
    facet.materialart.
    Unknown
    Micro-X-ray fluorescence elemental data of the shell of A. benedeni benedeni specimens SG-125, SG-126, and SG-127 (2022)
    PANGAEA
    Details
    Publication Date: 2023-08-18
    Description: This dataset (XRF_Benedeni_benedeni_SG-125_126_127_crosslines_cal.csv) contains micro-X-ray fluorescence elemental data of the shell of A. benedeni benedeni specimens SG-125, SG-126, and SG-127. The bivalve shells were collected in 2013 from a shell bed at the top of the Oorderen Member of the Lillo Formation of the Pliocene in Belgium. The collection site was a construction-related temporary outcrop at the Deurganck Dock Lock (now Kieldrecht Lock) in the city of Antwerp, located at 51°16′44″N 4°14′52″E. These measurements were carried out in order to screen for diagenetic alteration, which results in enrichment of certain elements (e.g., Fe and Mn). The specimens were measured in spring 2021 at the Analytical, Environmental, and Geochemistry Research Group (AMGC) of the Vrije Universiteit Brussel, Belgium), on a Bruker M4 Tornado µXRF scanner. This instrument is equipped with a 30 W Rh anode metal-ceramic X-ray tube operated at 50 kV and 600 µA, and polycapillary lens focussing. The measurement was carried out following the methods described in de Winter and Claeys (2017) and Kaskes et al (2021), and consisted of multiple line scans oriented perpendicular to the growth direction. Also provided is an image file (XRF_Benedeni_benedeni_crosslines_locations.png) which shows the location of these line scans on the shell cross sections.
    Keywords: Aluminium; Aluminium, standard deviation; Antwerpen, Belgium; Barium; Barium, standard deviation; Bivalve; Calcium; Calcium, standard deviation; Carbon; Carbon, standard deviation; Chlorine; Chlorine, standard deviation; Clumped isotopes; Cobalt; Cobalt, standard deviation; Copper; Copper, standard deviation; EBSD; Event label; Iron; Iron, standard deviation; Lead; Lead, standard deviation; Line; Line coordinates x; Line coordinates y; Line coordinates z; Magnesium; Magnesium, standard deviation; Manganese; Manganese, standard deviation; micro-XRF; mid-Pliocene warm period; multiproxy; Nickel; Nickel, standard deviation; North Sea; Number; OUTCROP; Outcrop sample; Oxygen; Oxygen, standard deviation; Oxygen isotopes; paleotemperature proxy; Phosphorus; Phosphorus, standard deviation; Pliocene; Potassium; Potassium, standard deviation; Rhodium, standard deviation; Rubidium; Rubidium, standard deviation; Sampling resolution; sclerochronology; SG-125; SG-126; SG-127; Silicon; Silicon, standard deviation; Sodium, standard deviation; Southern North Sea; Spectrum; Strontium; Strontium, standard deviation; Sulfur; Sulfur, standard deviation; Thorium; Thorium, standard deviation; Titanium; Titanium, standard deviation; X-ray diffraction (Bruker M4 Tornado); XRD; Yttrium; Yttrium, standard deviation; Zinc; Zinc, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 51577 data points
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  • 4
    facet.materialart.
    Unknown
    CO2 and inorganic nutrient enrichment affect the performance of a calcifying green alga and its noncalcifying epiphyte (2015)
    PANGAEA
    In:  Supplement to: Hofmann, Laurie C; Bischof, Kai; Baggini, Cecilia; Johnson, Andrew; Koop-Jakobsen, Ketil; Teichberg, Mirta (2015): CO2 and inorganic nutrient enrichment affect the performance of a calcifying green alga and its noncalcifying epiphyte. Oecologia, 177(4), 1157-1169, https://doi.org/10.1007/s00442-015-3242-5
    Details
    Publication Date: 2024-03-15
    Description: Ocean acidification studies in the past decade have greatly improved our knowledge of how calcifying organisms respond to increased surface ocean CO2 levels. It has become evident that, for many organisms, nutrient availability is an important factor that influences their physiological responses and competitive interactions with other species. Therefore, we tested how simulated ocean acidification and eutrophication (nitrate and phosphate enrichment) interact to affect the physiology and ecology of a calcifying chlorophyte macroalga (Halimeda opuntia (L.) J.V. Lamouroux) and its common noncalcifying epiphyte (Dictyota sp.) in a 4-week fully crossed multifactorial experiment. Inorganic nutrient enrichment (+NP) had a strong influence on all responses measured with the exception of net calcification. Elevated CO2 alone significantly decreased electron transport rates of the photosynthetic apparatus and resulted in phosphorus limitation in both species, but had no effect on oxygen production or respiration. The combination of CO2 and +NP significantly increased electron transport rates in both species. While +NP alone stimulated H. opuntia growth rates, Dictyota growth was significantly stimulated by nutrient enrichment only at elevated CO2, which led to the highest biomass ratios of Dictyota to Halimeda. Our results suggest that inorganic nutrient enrichment alone stimulates several aspects of H. opuntia physiology, but nutrient enrichment at a CO2 concentration predicted for the end of the century benefits Dictyota sp. and hinders its calcifying basibiont H. opuntia.
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Aragonite saturation state; Aragonite saturation state, standard deviation; Benthos; Bicarbonate ion; Bicarbonate ion, standard deviation; BIOACID; Biological Impacts of Ocean Acidification; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (〈20 L); Calcification/Dissolution; Calcification rate; Calcite saturation state; Calcium carbonate; Calculated using seacarb; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbon, organic, particulate; Carbon, organic, particulate/Nitrogen, particulate ratio; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Change; Chlorophyta; Coast and continental shelf; Comment; Curacao; Dictyota sp.; Electron transport rate, relative; EXP; Experiment; Figure; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth/Morphology; Growth rate; Halimeda opuntia; Identification; Incubation duration; Irradiance; Laboratory experiment; Macroalgae; Macro-nutrients; Maximum photochemical quantum yield of photosystem II; Net photosynthesis rate, oxygen; Nitrogen, total, particulate; Nitrogen/Phosphorus ratio; North Atlantic; OA-ICC; Ocean Acidification International Coordination Centre; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Percentage; pH; pH, standard deviation; Phosphates; Plantae; Potentiometric; Potentiometric titration; Primary production/Photosynthesis; Respiration; Respiration rate, oxygen; Salinity; Sample ID; Single species; Species; Table; Temperature, water; Temperature, water, standard deviation; Treatment; Tropical
    Type: Dataset
    Format: text/tab-separated-values, 23003 data points
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  • 5
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    Unknown
    Electron backscatter diffraction maps of thin sections of A. benedeni benedeni specimens SG-125, SG-126, and SG-127 (2022)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: This dataset (.crc and .cpr files) contain electron backscatter diffraction maps of thin sections of A. benedeni benedeni specimens SG-125, SG-126, and SG-127. Also included are .BMP files for each map. The bivalve shells were collected in 2013 from a shell bed at the top of the Oorderen Member of the Lillo Formation of the Pliocene in Belgium. The collection site was a construction-related temporary outcrop at the Deurganck Dock Lock (now Kieldrecht Lock) in the city of Antwerp, located at 51°16′44″N 4°14′52″E. These measurements were carried out in order to determine the microstructures of the shells of A. benedeni benedeni, as well as to screen for minor diagenetic alterations. The specimens were measured in spring 2021 at Department of Earth Sciences of Utrecht University, the Netherlands, on an Oxford Instruments Symmetry EBSD detector attached to a Zeiss Gemini 450 SEM. Thin sections of the samples were mechanically polished with 0.3 µm aluminium oxide suspension and finished with chemical Syton® polish. The thin sections were covered with a thin (several nm) carbon coating to keep charge build-up during the measurements at a minimum.
    Keywords: Antwerpen, Belgium; Binary Object; Bivalve; Clumped isotopes; EBSD; micro-XRF; mid-Pliocene warm period; multiproxy; North Sea; OUTCROP; Outcrop sample; Oxygen isotopes; paleotemperature proxy; Pliocene; sclerochronology; SG-125; SG-126; SG-127; Southern North Sea; XRD
    Type: Dataset
    Format: text/tab-separated-values, 3 data points
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  • 6
    facet.materialart.
    Unknown
    Multiproxy dataset measured on the shells of extinct bivalve Angulus benedeni benedeni (Pliocene Lillo Formation, North Sea basin of Belgium) used to assess its suitability as a climate archive (2022)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Keywords: Bivalve; Clumped isotopes; EBSD; micro-XRF; mid-Pliocene warm period; multiproxy; North Sea; Oxygen isotopes; paleotemperature proxy; Pliocene; sclerochronology; Southern North Sea; XRD
    Type: Dataset
    Format: application/zip, 6 datasets
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  • 7
    facet.materialart.
    Unknown
    Oxygen and carbon isotope data of the shells of A. benedeni benedeni specimens SG-126 and SG-127 (2022)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: This dataset contains oxygen and carbon isotope data of the shells of A. benedeni benedeni specimens SG-126 and SG-127, as well as two in-house standards (Naxos, Kiel-carbonate). These measurements were carried out in order to establish a sclerochronological record of year-by-year shell growth. The bivalve shells were collected in 2013 from a shell bed at the top of the Oorderen Member of the Lillo Formation of the Pliocene in Belgium. The collection site was a construction-related temporary outcrop at the Deurganck Dock Lock (now Kieldrecht Lock) in the city of Antwerp, located at 51°16′44″N 4°14′52″E. Oxygen and carbon stable isotopes were measured in spring 2021 at the department of Earth Sciences at Utrecht University, the Netherlands, on a Thermo Scientific GasBench II gas preparation system coupled to a Thermo Scientific MAT 253 isotope ratio mass spectrometer and using a LIDI workflow. The dataset includes raw data and corrected values, and final values are reported relative to the Vienna Pee-Dee Belemnite (VPDB) standard.
    Keywords: Antwerpen, Belgium; Bivalve; Clumped isotopes; EBSD; micro-XRF; mid-Pliocene warm period; multiproxy; North Sea; OUTCROP; Outcrop sample; Oxygen isotopes; paleotemperature proxy; Pliocene; sclerochronology; SG-126; SG-127; Southern North Sea; XRD
    Type: Dataset
    Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 408.2 kBytes
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  • 8
    facet.materialart.
    Unknown
    Carbonate clumped isotope data of the shells of A. benedeni benedeni specimens SG-126 and SG-127 (2022)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: This dataset contains carbonate clumped isotope data of the shells of A. benedeni benedeni specimens SG-126 and SG-127 as well as used standards (ETH1, ETH2, ETH3, Merck, IAEA-C2). These measurements were carried out in order to reconstruct a palaeo mean annual temperature from these shells, using the temperature calibration of Meinicke et al. (2020, 2021). The bivalve shells were collected in 2013 from a shell bed at the top of the Oorderen Member of the Lillo Formation of the Pliocene in Belgium. The collection site was a construction-related temporary outcrop at the Deurganck Dock Lock (now Kieldrecht Lock) in the city of Antwerp, located at 51°16′44″N 4°14′52″E. Clumped isotopes were measured in spring 2021 at the department of Earth Sciences at Utrecht University, the Netherlands, on a Kiel IV carbonate device coupled to a Thermo Scientific MAT 253 Plus isotope ratio mass spectrometer and using a LIDI workflow, following the protocol of Meckler et al. (2014). The dataset includes raw data and corrected values, and final values are reported in accordance with the I-CDES90 reference frame of Bernasconi et al. (2021). Associated oxygen and carbon isotopes are reported relative to the Vienna Pee-Dee Belemnite (VPDB) standard.
    Keywords: Antwerpen, Belgium; Bivalve; Clumped isotopes; EBSD; micro-XRF; mid-Pliocene warm period; multiproxy; North Sea; OUTCROP; Outcrop sample; Oxygen isotopes; paleotemperature proxy; Pliocene; sclerochronology; SG-126; SG-127; Southern North Sea; XRD
    Type: Dataset
    Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 931.7 kBytes
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  • 9
    Electronic Resource
    Electronic Resource
    Systematic preparative methods for petroporphyrin purification (1990)
    s.l. : American Chemical Society
    Energy & fuels 4 (1990), S. 695-699 
    Details
    ISSN: 1520-5029
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ef00024a013
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  • 10
    Electronic Resource
    Electronic Resource
    The role of microbial community composition and groundwater chemistry in determining isoproturon degradation potential in UK aquifers (2004)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 49 (2004), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The community response of indigenous sandstone, chalk and limestone groundwater microorganisms to the addition of the commonly used herbicide isoproturon was examined. The addition of 100 μg l−1 isoproturon generally caused an increase in species diversity determined by chemotaxonomic analysis (fatty methyl ester analysis) of isolates resulting from incubation of cultures at 18 °C for 4 days. Amongst the groundwater samples to which isoproturon was added, isoproturon degradation rates were correlated with increasing dominance of a few species. However, the changes in community profile associated with isoproturon degradation varied from site to site. Repeated sub-culturing with 100 μg l−1 isoproturon and sterile groundwater was carried out to examine whether this level of pesticide could exert a selection pressure, and hence stimulate more rapid degradation. Significantly increased degradation was observed in a groundwater sample from the chalk, but not in sandstone, or limestone samples. The addition of filter-sterilised sandstone groundwater to bacteria on filter paper from slow degrading limestone sites significantly improved their degrading performance. The addition of filter-sterilised limestone groundwater to the sandstone bacteria reduced their degradation rate only slightly. The data suggested that the nature of the indigenous community does influence pesticide degradation in groundwater, but that the groundwater chemistry may also play a role.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/j.femsec.2004.03.015
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    Paper (German National Licenses)
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