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  • 11
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    PANGAEA
    In:  Supplement to: Waterson, Amy; Edgar, Kirsty M; Schmidt, Daniela N; Valdes, Paul J (2017): Quantifying the stability of planktic foraminiferal physical niches between the Holocene and Last Glacial Maximum. Paleoceanography, https://doi.org/10.1002/2016PA002964
    Publication Date: 2023-07-07
    Description: The application of transfer functions on fossil assemblages to reconstruct past environments is fundamentally based on the assumption of stable environmental niches in both space and time. We quantitatively test this assumption for six dominant planktic foraminiferal species (Globigerinoides ruber (pink), G. ruber (white), Trilobatus sacculifer, Truncorotalia truncatulinoides, Globigerina bulloides and Neogloboquadrina pachyderma) by contrasting reconstructions of species realised and optimum distributions in the modern and during the Last Glacial Maximum (LGM) using an ecological niche model (ENM; MaxEnt) and ordination framework. Global ecological niche models calibrated in the modern ocean have high predictive performance when projected to the LGM for sub-polar and polar species, indicating that the environmental niches of these taxa are largely stable at the global scale across this interval. In contrast, ENM's had much poorer predictive performance for the optimal niche of tropical-dwelling species, T. sacculifer and G. ruber (pink). This finding is supported by independent metrics of niche margin change, suggesting that niche stability in environmental space was greatest for (sub)polar species, with greatest expansion of the niche observed for tropical species. We find that globally calibrated ENMs showed good predictions of species occurrences globally, whereas models calibrated in either the Pacific or Atlantic Oceans only and then projected globally performed less well for T. sacculifer. Our results support the assumption of environmental niche stability over the last ~21,000 years for most of our focal planktic foraminiferal species and thus, the application of transfer function techniques for palaeoenvironmental reconstruction during this interval. However, the lower observed niche stability for (sub)tropical taxa T. sacculifer and G. ruber (pink) suggests that (sub)tropical temperatures could be underestimated in the glacial ocean with the strongest effect in the equatorial Atlantic where both species are found today.
    Keywords: File content; File format; File name; File size; Uniform resource locator/link to file
    Type: Dataset
    Format: text/tab-separated-values, 70 data points
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  • 12
    Publication Date: 2023-08-11
    Description: The following supplementary information includes one dataset which contains 3 tables: Biomarker distributions and proxies at Cobham, UK Bulk and compound specific isotope data at Cobham (UK) Model-derived mean annual surface temperature and precipitation estimates as a function of CO2 at Cobham (UK).
    Keywords: lignite
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 13
    Publication Date: 2023-08-11
    Keywords: Acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Acyclic glycerol dialkyl glycerol tetraether (peak intensity); Age, comment; Branched and isoprenoid tetraether index; Branched glycerol dialkyl glycerol tetraether; Branched glycerol dialkyl glycerol tetraether, Ia, fractional abundance; Branched glycerol dialkyl glycerol tetraether, Ia (peak area); Branched glycerol dialkyl glycerol tetraether, Ib, fractional abundance; Branched glycerol dialkyl glycerol tetraether, Ib (peak area); Branched glycerol dialkyl glycerol tetraether, Ic, fractional abundance; Branched glycerol dialkyl glycerol tetraether, Ic (peak area); Branched glycerol dialkyl glycerol tetraether, IIa, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIa', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIa' (peak area); Branched glycerol dialkyl glycerol tetraether, IIa (peak area); Branched glycerol dialkyl glycerol tetraether, IIb, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIb', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIb' (peak area); Branched glycerol dialkyl glycerol tetraether, IIb (peak area); Branched glycerol dialkyl glycerol tetraether, IIc, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIc', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIc' (peak area); Branched glycerol dialkyl glycerol tetraether, IIc (peak area); Branched glycerol dialkyl glycerol tetraether, IIIa, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIa', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIa' (peak area); Branched glycerol dialkyl glycerol tetraether, IIIa (peak area); Branched glycerol dialkyl glycerol tetraether, IIIb, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIb', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIb' (peak area); Branched glycerol dialkyl glycerol tetraether, IIIb (peak area); Branched glycerol dialkyl glycerol tetraether, IIIc, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIc', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIc' (peak area); Branched glycerol dialkyl glycerol tetraether, IIIc (peak area); Branched glycerol monoalkyl glycerol tetraethers, Ia (peak area); Branched glycerol monoalkyl glycerol tetraethers, IIa (peak area); Branched glycerol monoalkyl glycerol tetraethers, IIIa (peak area); Cobham; Comment; Crenarchaeol, fractional abundance; Crenarchaeol (peak area); Degree of cyclisation; DEPTH, sediment/rock; Dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; Dicyclic glycerol dialkyl glycerol tetraether (peak area); Glycerol dialkyl glycerol tetraether 5 (peak area); Glycerol monoalkyl glycerol tetraether lipids; Glycerol monoalkyl glycerol tetraether lipids (peak area); H-Glycerol dialkyl glycerol tetraether (peak area); Isoprenoid glycerol dialkyl glycerol tetraether, 5; lignite; Lithology/composition/facies; Methylation index of branched tetraethers; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Monocyclic glycerol dialkyl glycerol tetraether (peak area); pH; Proxy; QU; Quarry; Sample code/label; Tetracyclic glycerol dialkyl glycerol tetraether, fractional abundance; Tetracyclic glycerol dialkyl glycerol tetraether (peak area); Tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; Tricyclic glycerol dialkyl glycerol tetraether (peak area)
    Type: Dataset
    Format: text/tab-separated-values, 2155 data points
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  • 14
    Publication Date: 2023-08-11
    Keywords: lignite
    Type: Dataset
    Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 16.9 kBytes
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  • 15
    Publication Date: 2023-07-10
    Keywords: Algae, geniculate; Algae, melobesioid, indeterminata; Algae fragments; Benthic foraminifera; coralline algae; Dasyclads; Distichoplax spp.; Halimeda spp.; isotope data; Lithophyllum spp.; Lithoporella spp.; Lithothamnion spp.; Mawmluh_Cement_Quarry; Mesophyllum spp.; Neogoniolithon spp.; Ovulites spp.; Paleocene-Eocene Thermal Maximum; Polystrata alba; Sample ID; SECTION, height; Spongites spp.; Sporolithon spp.; thin-section
    Type: Dataset
    Format: text/tab-separated-values, 2592 data points
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  • 16
    Publication Date: 2023-10-16
    Keywords: 29-277; AGE; Antarctic Ocean/PLATEAU; Australia; Biomarkers; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; Eocene-Oligocene Transition; Glomar Challenger; Leg29; paleotemperature; Reference/source; Sea surface temperature; SST, from BAYSPAR (50th Percentile); SST, from BAYSPAR (5th Percentile); SST, from BAYSPAR (95th Percentile); terrestrial temperatures; Tetraether index of 86 carbon atoms
    Type: Dataset
    Format: text/tab-separated-values, 60 data points
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  • 17
    Publication Date: 2023-10-16
    Keywords: 71-511; AGE; Australia; Biomarkers; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; Eocene-Oligocene Transition; Glomar Challenger; Leg71; paleotemperature; Reference/source; Sea surface temperature; South Atlantic/PLATEAU; SST, from BAYSPAR (50th Percentile); SST, from BAYSPAR (5th Percentile); SST, from BAYSPAR (95th Percentile); terrestrial temperatures; Tetraether index of 86 carbon atoms
    Type: Dataset
    Format: text/tab-separated-values, 260 data points
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  • 18
    Publication Date: 2023-10-16
    Keywords: Anglesea_mine; Australia; Biomarkers; Biozone; Branched and isoprenoid tetraether index; Carbon, organic, total; CDRILL; Core drilling; DEPTH, sediment/rock; Eocene-Oligocene Transition; Epoch; Event label; Gippsland Basin, Australia; Methylation index of 5-methyl branched glycerol dialkyl glycerol tetraether; Name; paleotemperature; pH; Ratio; Sample code/label; Sample code/label 2; Temperature, air, annual mean; terrestrial temperatures; Torquay Basin, Australia; Wulla_Wullock-7
    Type: Dataset
    Format: text/tab-separated-values, 608 data points
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  • 19
    Publication Date: 2023-10-18
    Keywords: Aberisphaera sp.; Alkenones; Alveolina spp.; Benthic foraminifera; coralline algae; Core tops; Daviesina sp.; Discocyclina spp.; Elazigella altineri; Foraminifera, benthic, indeterminate orthophragminids; Foraminifera, benthic encrusting; Globotextularia sp.; Glomalveolina cf. sireli; Glomalveolina levis; Glomalveolina primaeva; Glomalveolina spp.; Haymanella sp.; Idalina sinjarica; isotope data; Kathina major; Kathina selveri; Kathina spp.; Keramospherids; Lakadongia sp.; Lakadongia tibetica; Lockhartia conditi; Lockhartia haimei; Lockhartia spp.; Mardinella sp.; Mawmluh_Cement_Quarry; Miliolidae; Miscellanea cf. juliettae; Miscellanea cf. yvettae; Miscellanea miscella; Nannofossils description; Nummulitidae; Orbitoclypeus multiplicatus; Orbitoclypeus schopeni; Orbitolites sp.; Orbitosiphon punjabensis; Orbitosiphon sp.; Orduella sp.; Paleocene-Eocene Thermal Maximum; Periloculina sp.; Protogypsina sp.; Quinqueloculina sp.; Ranikothalia cf. sindensis; Ranikothalia nuttalli; Ranikothalia sp.; Rotalia cf. trochidiformis; Rotalia spp.; Sample ID; SECTION, height; Sphaerogypsina sp.; thin-section; Valvulina sp.; Zone; δ13C
    Type: Dataset
    Format: text/tab-separated-values, 7937 data points
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  • 20
    Publication Date: 2023-11-30
    Keywords: C29 beta beta-Hopane, δ13C; C31 beta beta-Hopane, δ13C; Carbon, organic, total; Cobham; DEPTH, sediment/rock; lignite; n-Alkane C23, δ13C; n-Alkane C25, δ13C; n-Alkane C27, δ13C; n-Alkane C29, δ13C; QU; Quarry
    Type: Dataset
    Format: text/tab-separated-values, 204 data points
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