Response of Central European SST to atmospheric pCO2 forcing during the Oligocene – A combined proxy data and numerical climate model approach

Walliser, Eric Otto; Lohmann, Gerrit; Niezgodzki, Igor; Tütken, Thomas; Schöne, Bernd R.

doi:10.1016/j.palaeo.2016.07.033

Cited by 19 publications

(12 citation statements)

References 105 publications

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“…; Walliser et al . , ). Thus, the stable isotope values of the N. sachalinensis shell can be considered as reflecting the signal expected for benthic heterotrophic bivalves.…”

Section: Discussionmentioning

confidence: 99%

“…Among the 'background' taxa, only the arcoid bivalve N. sachalinensis was a sessile organism, that is it recorded environmental conditions at a specific locality through its lifetime. Existing studies on modern and fossil material have shown that δ 13 C and δ 18 O values of arcoid shells are not influenced by vital or kinetic effects (Bušelić et al 2015;Walliser et al 2016Walliser et al , 2017. Thus, the stable isotope values of the N. sachalinensis shell can be considered as reflecting the signal expected for benthic heterotrophic For the calculation of T δ18O values were employed the palaeotemperature equations of Grossman & Ku (1986) and Anderson & Arthur (1983) for aragonitic (A) and calcitic (C) shell material, respectively.…”

Section: Reconstruction Of the 'Background' Palaeowater Signalmentioning

confidence: 99%

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Sclerochronological study of the gigantic inoceramids Sphenoceramus schmidti and S. sachalinensis from Hokkaido, northern Japan

Walliser

Tanabe

Hikida

et al. 2019

LET

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Here, we present the first sclerochronological investigation of shells of the gigantic inoceramids Sphenoceramus schmidti and S. sachalinensis from the middle Campanian cold seep carbonate‐bearing strata of the Yezo Basin in Hokkaido (northern Japan). Stable carbon (δ13C) and oxygen (δ18O) isotope values were measured in the aragonitic and calcitic shell layers of both species and compared to those of other co‐occurring benthic (mainly bivalves and gastropods) and demersal molluscs (ammonites). Sedimentological and stable isotope data suggest that these bivalves lived near cold seeps and were exposed to high H2S level in the seawater. The inoceramid shells exhibited higher δ13C and lower δ18O values than the coeval non‐cold seep molluscs. We ascribed the anomalous isotopic pattern to a combination of vital and environmental effects determined by the hosting of chemosymbionts and the exposure to warm interstitial waters. Inoceramid δ13C minima coincided with growth lines and likely reflect changes in nutrient supply by the chemosymbionts. Absolute temperatures estimated from δ18O values of Sphenoceramus schmidti and S. sachalinensis were, on average, ca. 4–5°C warmer than those reconstructed for the non‐seepage environment (19.3 ± 0.7°C). Short‐term δ18O fluctuations of the inoceramid material indicate local temperature ranges of up to 5.2°C, that is four times larger than those reconstructed from the benthic and demersal fauna (1.3°C). In general, our data suggest that the stable carbon and oxygen isotope values of the studied Sphenoceramus spp. were strongly affected by short‐term fluctuations in seepage activity and do not reflect seasonal fluctuations.

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“…; Walliser et al . , ). Thus, the stable isotope values of the N. sachalinensis shell can be considered as reflecting the signal expected for benthic heterotrophic bivalves.…”

Section: Discussionmentioning

confidence: 99%

Section: Reconstruction Of the 'Background' Palaeowater Signalmentioning

confidence: 99%

Sclerochronological study of the gigantic inoceramids Sphenoceramus schmidti and S. sachalinensis from Hokkaido, northern Japan

Walliser

Tanabe

Hikida

et al. 2019

LET

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“…We employ an atmosphere‐ocean general circulation model (AOGCM) which was developed at the Max Planck Institute for Meteorology in Hamburg. The model has been successfully applied to test a variety of paleoclimate hypotheses, ranging from the late Paleocene/early Eocene and Oligocene climate [ Heinemann et al ., ; Walliser et al ., ], the Miocene climate [ Knorr et al ., ; Knorr and Lohmann , ; Forrest et al ., ; Stein et al ., ; Huang et al ., ; Stärz et al ., ], the Pliocene [ Stepanek and Lohmann , ] as well as glacial [ Gong et al ., ; Zhang et al ., , ; Köhler et al ., ; Abelmann et al ., ] and interglacial climates [ Wei and Lohmann , ; Wei et al ., ; Lohmann et al ., ; Pfeiffer and Lohmann , ]. In our Late Cretaceous simulations, we used the coupled ocean‐atmosphere configuration with prescribed vegetation (described below).…”

Section: Methodsmentioning

confidence: 99%

Late Cretaceous climate simulations with different CO₂ levels and subarctic gateway configurations: A model‐data comparison

et al. 2017

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We investigate the impact of different CO2 levels and different subarctic gateway configurations on the surface temperatures during the latest Cretaceous using the Earth System Model COSMOS. The simulated temperatures are compared with the surface temperature reconstructions based on a recent compilation of the latest Cretaceous proxies. In our numerical experiments, the CO2 level ranges from 1 to 6 times the preindustrial (PI) CO2 level of 280 ppm. On a global scale, the most reasonable match between modeling and proxy data is obtained for the experiments with 3 to 5 × PI CO2 concentrations. However, the simulated low‐ (high‐) latitude temperatures are too high (low) as compared to the proxy data. The moderate CO2 levels scenarios might be more realistic, if we take into account proxy data and the dead zone effect criterion. Furthermore, we test if the model‐data discrepancies can be caused by too simplistic proxy‐data interpretations. This is distinctly seen at high latitudes, where most proxies are biased toward summer temperatures. Additional sensitivity experiments with different ocean gateway configurations and constant CO2 level indicate only minor surface temperatures changes (<~1°C) on a global scale, with higher values (up to ~8°C) on a regional scale. These findings imply that modeled and reconstructed temperature gradients are to a large degree only qualitatively comparable, providing challenges for the interpretation of proxy data and/or model sensitivity. With respect to the latter, our results suggest that an assessment of greenhouse worlds is best constrained by temperatures in the midlatitudes.

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“…Other studies revealed no clear‐cut trends, dependent on the method employed in each case (Teodoridis & Kvaček, 2015; Uhl et al, 2007). For western Germany pollen‐based data and δ 18 O values of fossil bivalve shells and shark teeth first indicate a decline of terrestrial and sea surface temperatures (SSTs) by ~4°C throughout the Chattian and a subsequent warming towards the Oligocene–Miocene transition (Schäfer & Utescher, 2014; Walliser, Lohmann, Niezgodzki, Tütken, & Schöne, 2016).…”

Section: Introductionmentioning

confidence: 99%

Oligocene vegetation of Europe and western Asia—Diversity change and continental patterns reflected by plant functional types

et al. 2020

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Spatial vegetation patterns potentially reflect coeval continental climate variations which are also impacted by palaeogeographical settings. Plant functional types (PFTs) and their distribution, frequently applied in ecological studies and biome modelling, serve as a tool for reconstructing palaeovegetation units and ultimately tracing palaeoecological/climate gradients. Earlier quantitative studies focusing on distribution patterns of PFTs and designed to put forward data‐model comparisons were carried out on well‐dated Middle and Late Miocene floras. Moreover, the PFT approach has been successfully applied to reconstruct Eocene vegetation patterns in several time slices at a global scale as well as in regional vegetation reconstructions throughout the Cenozoic. In the current study, a PFT approach with 41 different classes is applied on Rupelian and Chattian fossil floras of Europe and western Asia to infer spatial vegetation differences across the study area. A comprehensive palaeobotanical record including ~163 macro‐ (leaves, fruits and seeds) and microfloras was compiled. The floristic components of these palaeofloras are translated to PFTs including herbaceous to arboreal classes. The PFTs are defined using traits and climatic thresholds of key taxa, and comprise species assigned by morphological and phenological features with respect to the related ecosystem. Diversity values of each PFT are calculated for the fossil floras and spatial gradients over western Eurasia are investigated for the Rupelian and Chattian. PFT diversity maps and transects for both time slices reveal basic patterns of the vegetational structure at the continental scale. It is shown that in both time slices studied tropical and broadleaved evergreen PFTs were more diverse in the West and at lower latitudes. Consistently with the global climate evolution as known from marine archives and regional continental records their level was higher in the Rupelian compared to the Chattian. All over low diversities of xeric PFTs coincide with the previously assumed dominance of humid climate conditions in western Eurasia throughout the Oligocene, however, the reconstructed spatial gradients suggest somewhat drier conditions to the southwest and southeast of the study area.

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Response of Central European SST to atmospheric pCO2 forcing during the Oligocene – A combined proxy data and numerical climate model approach

Cited by 19 publications

References 105 publications

Sclerochronological study of the gigantic inoceramids Sphenoceramus schmidti and S. sachalinensis from Hokkaido, northern Japan

Sclerochronological study of the gigantic inoceramids Sphenoceramus schmidti and S. sachalinensis from Hokkaido, northern Japan

Late Cretaceous climate simulations with different CO₂ levels and subarctic gateway configurations: A model‐data comparison

Oligocene vegetation of Europe and western Asia—Diversity change and continental patterns reflected by plant functional types

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Response of Central European SST to atmospheric pCO2 forcing during the Oligocene – A combined proxy data and numerical climate model approach

Cited by 19 publications

References 105 publications

Sclerochronological study of the gigantic inoceramids Sphenoceramus schmidti and S. sachalinensis from Hokkaido, northern Japan

Sclerochronological study of the gigantic inoceramids Sphenoceramus schmidti and S. sachalinensis from Hokkaido, northern Japan

Late Cretaceous climate simulations with different CO2 levels and subarctic gateway configurations: A model‐data comparison

Oligocene vegetation of Europe and western Asia—Diversity change and continental patterns reflected by plant functional types

Contact Info

Product

Resources

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Late Cretaceous climate simulations with different CO₂ levels and subarctic gateway configurations: A model‐data comparison