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  • 1
    Schlagwort(e): Forschungsbericht ; Klimaänderung ; Ressourcenmanagement
    Materialart: Online-Ressource
    Seiten: 1 Online-Ressource (41 Seiten, 1,04 MB)
    Sprache: Deutsch
    Anmerkung: Verfasser und sonstige Körperschaft, die mit dem Werk in Verbindung steht Seite 2 entnommen , Förderkennzeichen BMBF 03G0861A-D. - Verbund-Nummer 01170349 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
    Schlagwort(e): Forschungsbericht
    Materialart: Online-Ressource
    Seiten: 1 Online-Ressource (49 Seiten, 1,32 MB) , Illustrationen, Diagramme
    Sprache: Deutsch
    Anmerkung: Förderkennzeichen BMBF 03G0838B. - Verbund-Nummer 01144265 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 3
    Schlagwort(e): Forschungsbericht
    Materialart: Online-Ressource
    Seiten: 1 Online-Ressource (190 Seiten, 12,78 MB) , Illustrationen, Diagramme
    Sprache: Deutsch
    Anmerkung: Förderkennzeichen BMBF 02WPL1449A-G , Verbundnummer 01179664 , Literaturangaben , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 4
    Publikationsdatum: 2023-03-22
    Beschreibung: These datasets describe a 31.5 m long sediment core taken from beneath thermokarst lake Goltsovoye Lake (71.74515 N, 129.30217 E) on the Bykovsky Peninsula, northeastern Siberia. The thermokarst lake was 510 cm deep. Here, we report the depths from the ice surface as well as from the sediment surface. The first dataset presents biogeochemical and hydrochemical parameters of sediment core PG2412. Biogeochemical analyses include total nitrogen (TN) content, total carbon (TC) content, total organic carbon (TOC) content and stable carbon isotopes (δ13C). δ13C was measured for samples with TOC 〉 0.1 wt %. Hydrochemical parameters include pore water content, pH and electrical conductivity (EC). The second dataset presents the grain size distribution of sediment core PG2412. The fraction 〉 1 mm is not included. The third dataset presents the radiocarbon ages from samples from sediment core PG2412. Calibrated and rounded calibrated ages are presented. Calibrations were performed according to Stuiver et al. (2017) using CALIB 7.1 software and the IntCal13 calibration curve. The fourth dataset presents the n-alkane data from samples from sediment core PG2412. Concentrations of n-alkanes in the range n-C23 to n-C33 are given in µg/g sediment and µg/g TOC. From the n-alkane concentrations, we calculated the following indices: average chain length (ACL), carbon preference index (CPI), odd-over-even predominance (OEP), n-Alkane ratio, aquatic plant proxy (Paq) and terrestrial plant proxy (Pwax).
    Schlagwort(e): AWI_Perma; n-alkanes; organic matter degradability; permafrost carbon storage; Permafrost Research; Russian Arctic; talik; thermokarst lake; Yedoma deposits
    Materialart: Dataset
    Format: application/zip, 4 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 5
    facet.materialart.
    Unbekannt
    PANGAEA
    In:  Supplement to: Stapel, Janina Gabriele; Schirrmeister, Lutz; Overduin, Pier Paul; Wetterich, Sebastian; Strauss, Jens; Horsfield, Brian; Mangelsdorf, Kai (2016): Microbial lipid signatures and substrate potential of organic matter in permafrost deposits: Implications for future greenhouse gas production. Journal of Geophysical Research: Biogeosciences, 121, 15 pp, https://doi.org/10.1002/2016JG003483
    Publikationsdatum: 2023-01-13
    Beschreibung: A terrestrial permafrost core from Buor Khaya in northern Siberia comprising deposits of Late Pleistocene to Early Holocene age has been investigated to characterize living and past microbial communities with respect to modern and paleoclimate environmental conditions and to evaluate the potential of the organic matter (OM) for greenhouse gas generation. Microbial life markers?intact phospholipids and phospholipid fatty acids?are found throughout the entire core and indicate the presence of living microorganisms also in older permafrost deposits. Biomarkers for past microbial communities (branched and isoprenoid glycerol dialkyl glycerol tetraether as well as archaeol) reveal links between increased past microbial activity and intervals of high OM accumulation accompanied by increased OM quality presumably caused by local periods of moister and warmer environmental conditions. Concentrations of acetate as an excellent substrate for methanogenesis are used to assess the OM quality with respect to microbial degradability for greenhouse gas production. For this purpose two acetate pools are determined: the pore water acetate and OM bound acetate. Both depth profiles reveal similarities to the OM content and quality indicating a link between the amount of the stored OM and the potential to provide substrates for microbial greenhouse gas production. The data suggest that OM stored in the permafrost deposits is not much different in terms of OM quality than the fresh surface organic material. Considering the expected increase of permafrost thaw due to climate warming, this implies a potentially strong impact on greenhouse gas generation from permafrost areas in future with positive feedback on climate variation.
    Materialart: Dataset
    Format: application/zip, 2 datasets
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 6
    Publikationsdatum: 2023-06-27
    Beschreibung: These datasets describe a 31.5 m long sediment core taken from beneath thermokarst lake Goltsovoye Lake (71.74515 N, 129.30217 E) on the Bykovsky Peninsula, northeastern Siberia. The thermokarst lake was 510 cm deep. Here, we report the depths from the ice surface as well as from the sediment surface. This dataset presents biogeochemical and hydrochemical parameters of sediment core PG2412. Biogeochemical analyses include total nitrogen (TN) content, total carbon (TC) content, total organic carbon (TOC) content and stable carbon isotopes (δ13C). δ13C was measured for samples with TOC 〉 0.1 wt %. Hydrochemical parameters include pore water content, pH and electrical conductivity (EC).
    Schlagwort(e): AWI_Perma; AWI Arctic Land Expedition; Bykovsky_2017_spring; Carbon, organic, total; Carbon, total; Conductivity, electrical; Cruise/expedition; DATE/TIME; Depth, reference; DEPTH, sediment/rock; Goltsovoye Lake, Siberia, Russia; n-alkanes; Nitrogen, total; organic matter degradability; PCUWI; permafrost carbon storage; Permafrost Research; PG2412; pH; Piston corer, UWITEC; RU-Land_2017_Lena_Bykovsky; Russian Arctic; Sediment type; talik; thermokarst lake; Water content, wet mass; Yedoma deposits; δ13C, organic carbon
    Materialart: Dataset
    Format: text/tab-separated-values, 937 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 7
    Publikationsdatum: 2023-06-27
    Beschreibung: These datasets describe a 31.5 m long sediment core taken from beneath thermokarst lake Goltsovoye Lake (71.74515 N, 129.30217 E) on the Bykovsky Peninsula, northeastern Siberia. The thermokarst lake was 510 cm deep. Here, we report the depths from the ice surface as well as from the sediment surface. This dataset presents the n-alkane data from samples from sediment core PG2412. Concentrations of n-alkanes in the range n-C23 to n-C33 are given in µg/g sediment and µg/g TOC. From the n-alkane concentrations, we calculated the following indices: average chain length (ACL), carbon preference index (CPI), odd-over-even predominance (OEP), n-Alkane ratio, aquatic plant proxy (Paq) and terrestrial plant proxy (Pwax).
    Schlagwort(e): Average chain length; AWI_Perma; AWI Arctic Land Expedition; Bykovsky_2017_spring; Carbon Preference Index; Depth, reference; DEPTH, sediment/rock; Goltsovoye Lake, Siberia, Russia; Identification; n-Alkane C23, per unit mass total organic carbon; n-Alkane C23, per unit sediment mass; n-Alkane C24, per unit mass total organic carbon; n-Alkane C24, per unit sediment mass; n-Alkane C25, per unit mass total organic carbon; n-Alkane C25, per unit sediment mass; n-Alkane C26, per unit mass total organic carbon; n-Alkane C26, per unit sediment mass; n-Alkane C27, per unit mass total organic carbon; n-Alkane C27, per unit sediment mass; n-Alkane C28, per unit mass total organic carbon; n-Alkane C28, per unit sediment mass; n-Alkane C29, per unit mass total organic carbon; n-Alkane C29, per unit sediment mass; n-Alkane C30, per unit mass total organic carbon; n-Alkane C30, per unit sediment mass; n-Alkane C31, per unit mass total organic carbon; n-Alkane C31, per unit sediment mass; n-Alkane C32, per unit mass total organic carbon; n-Alkane C32, per unit sediment mass; n-Alkane C33, per unit mass total organic carbon; n-Alkane C33, per unit sediment mass; n-alkanes; Odd-even predominance index; organic matter degradability; PCUWI; permafrost carbon storage; Permafrost Research; PG2412; Piston corer, UWITEC; Ratio; RU-Land_2017_Lena_Bykovsky; Russian Arctic; talik; thermokarst lake; Yedoma deposits
    Materialart: Dataset
    Format: text/tab-separated-values, 614 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 8
    Publikationsdatum: 2023-06-27
    Beschreibung: These datasets describe a 31.5 m long sediment core taken from beneath thermokarst lake Goltsovoye Lake (71.74515 N, 129.30217 E) on the Bykovsky Peninsula, northeastern Siberia. The thermokarst lake was 510 cm deep. Here, we report the depths from the ice surface as well as from the sediment surface. This dataset presents the radiocarbon ages from samples from sediment core PG2412. Calibrated and rounded calibrated ages are presented. Calibrations were performed according to Stuiver et al. (2017) using CALIB 7.1 software and the IntCal13 calibration curve.
    Schlagwort(e): Age, 14C AMS, Mini Carbon Dating System (MICADAS); Age, 14C calibrated, CALIB 7.1 (Stuiver et al. 2017) and IntCal13 calibration curve; Age, dated; Age, dated, range, maximum; Age, dated, range, minimum; Age, dated material; Age, dated standard error; AWI_Perma; AWI Arctic Land Expedition; Bykovsky_2017_spring; Calendar age; Calendar age, standard error; Depth, reference; DEPTH, sediment/rock; Fraction modern carbon; Fraction modern carbon, error; Goltsovoye Lake, Siberia, Russia; Laboratory code/label; n-alkanes; organic matter degradability; PCUWI; permafrost carbon storage; Permafrost Research; PG2412; Piston corer, UWITEC; RU-Land_2017_Lena_Bykovsky; Russian Arctic; talik; thermokarst lake; Yedoma deposits
    Materialart: Dataset
    Format: text/tab-separated-values, 178 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 9
    Publikationsdatum: 2023-06-27
    Schlagwort(e): Acetate; Acyclic glycerol dialkyl glycerol tetraether; Archaeol; AWI Arctic Land Expedition; BK-8; Branched glycerol dialkyl glycerol tetraether; Buor-Khaya Bay, Laptev Sea Coast, Russia; Carbon, organic, total; Carbon/Nitrogen ratio; DEPTH, sediment/rock; Hydrogen index, mass HC, per unit mass total organic carbon; Lena2011; Nitrate; Oxygen index, mass CO2, per unit mass total organic carbon; Phospholipid fatty acids; Phospholipids, per unit sediment dry mass; Ratio; RCD; Rotary core drilling; RU-Land_2011_Lena; Sample ID; Sulfate; δ13C, organic carbon
    Materialart: Dataset
    Format: text/tab-separated-values, 360 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 10
    facet.materialart.
    Unbekannt
    PANGAEA
    In:  Supplement to: Stapel, Janina Gabriele; Schwamborn, Georg; Schirrmeister, Lutz; Horsfield, Brian; Mangelsdorf, Kai (2018): Substrate potential of last interglacial to Holocene permafrost organic matter for future microbial greenhouse gas production. Biogeosciences, 15(7), 1969-1985, https://doi.org/10.5194/bg-15-1969-2018
    Publikationsdatum: 2023-06-27
    Beschreibung: Within the Russian-German research project CARBOPERM the organic matter (OM) in several permafrost cores from Bol'shoy Lyakhovsky Island in NE Siberia was investigated. In the context of the observed global warming the aim was to evaluate the potential of freeze-locked OM from different depositional ages (Eemian to Holocene) to act as a substrate provider for microbial production of greenhouse gases from thawing permafrost. To assess this potential bulk elemental parameters (total carbon (TC), total organic carbon (TOC), total inorganic carbon (TIC), total nitrogen (TN), TOC/TN ratios, Hydrogen Index and Oxygen Index data), the concentrations of free (directly extractable part) and bound (after ester cleavage) formate and acetate, the concentration of phospholipid life markers and the concentration of branched and isoprenoid glycerol dialkyl glycerol tetraethers (GDGT) were determined.
    Schlagwort(e): 2,3-di-O-phytanyl-sn-glycerol; Acetate; AWI Arctic Land Expedition; Bolshoy-Lyakhovsky_Island_2014; Bolshoy Lyakhovsky Island, East Siberia, Russia; Branched and isoprenoid tetraether index; Branched glycerol dialkyl glycerol tetraether, Ia; Branched glycerol dialkyl glycerol tetraether, Ib; Branched glycerol dialkyl glycerol tetraether, II group; Branched glycerol dialkyl glycerol tetraether, III group; Carbon, inorganic, total; Carbon, organic, total; Carbon, organic, total/Nitrogen, total ratio; Carbon, total; CARBOPERM; Crenarchaeol; DEPTH, sediment/rock; Event label; Formate; Formation, turnover and release of carbon in Siberian permafrost landscapes; GeoForschungszentrum Potsdam; GFZ; Hydrogen index, mass HC, per unit mass total organic carbon; Identification; Isoprenoid acyclic glycerol dialkyl glycerol tetraether; Isoprenoid dicyclic glycerol dialkyl glycerol tetraether; Isoprenoid monocyclic glycerol dialkyl glycerol tetraether; L14-02; L14-03; L14-04; L14-05; LAND; Latitude of event; Longitude of event; Nitrogen, total; Oxygen index, mass HC, per unit mass total organic carbon; Phospholipid fatty acids; RU-Land_2014_BolshoyLyakhovsky; Sample ID; Sampling/measurement on land
    Materialart: Dataset
    Format: text/tab-separated-values, 1291 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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