Stomatal density and index data of Platanus neptuni leaf fossils and their evaluation as a CO2 proxy for the Oligocene

Roth‐Nebelsick, Anita; Oehm, Christoph; Grein, Michaela; Utescher, Torsten; Kunzmann, Lutz; Friedrich, Jan-Peter; Konrad, Wilfried

doi:10.1016/j.revpalbo.2014.03.001

Cited by 34 publications

(24 citation statements)

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“…More arid climatic conditions possibly existed in the Oligocene further to the Southeast (Strömberg, ; Bosboom et al, ). The observed stable climate conditions reconstructed for the western Siberian Oligocene to early Miocene coincide with the relative stability of the global climate as evident from marine archives (Zachos et al, ), and the absence of fundamental changes in atmospheric p CO 2 (e.g., Roth‐Nebelsick et al, , ). This coincides with the observed stability of the Turgai type biome and the relative resemblance of the floral ecospectra.…”

Section: Resultssupporting

confidence: 83%

Dynamics and evolution of Turgay‐type vegetation in Western Siberia throughout the early Oligocene to earliest Miocene—a study based on diversity of plant functional types in the carpological record

Popova¹,

Utescher

Gromyko³

et al. 2018

J of Sytematics Evolution

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Based on ecospectra of 66 published carpofloras we study dynamics and evolution of Turgay vegetation in Western Siberia during the early Oligocene to earliest Miocene. The ecospectra are obtained using a Plant Functional Type (PFT) classification system comprising 26 herbaceous to arboreal PFTs. The carpofloras originate from seven floristic levels covering the time‐span from the Rupelian to early Aquitanian. Key elements of these levels are documented based on original collection materials. Although impacted by local edaphic conditions, the ecospectra can be interpreted in terms of changing vegetation. Our data show that warm temperate mesophytic, mixed conifer‐broad‐leaved deciduous forest assemblages persisted throughout the Oligocene and earliest Miocene in this core area of Turgai type vegetation. This is in line with comparatively stable climate conditions persisting in the studied time‐span, showing a minor temperature decline and coeval moderate increase in seasonality and precipitation. Concurrently, the reconstructed ecospectra contradict significant continental drying throughout the Oligocene and earliest Miocene. Spatial variability of the proportions of PFTs within the single floristic horizons primarily reflects local edaphic conditions. High diversities of PFTs characteristic for swamp vegetation are mainly confined to the early Oligocene and have a regional focus. Our results indicate that taxonomical diversity, particularly concerning mesic herbs and deciduous shrubs and trees, increased towards the end of the Oligocene. This increase in biodiversity probably can be attributed to an increase in rainfall and extension of terrestrial habitats after the final retreat of the Paratethys.

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Section: Resultssupporting

confidence: 83%

Dynamics and evolution of Turgay‐type vegetation in Western Siberia throughout the early Oligocene to earliest Miocene—a study based on diversity of plant functional types in the carpological record

Popova¹,

Utescher

Gromyko³

et al. 2018

J of Sytematics Evolution

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“…Differences to the likewise NLR-based Coexistence 25 Approach (Utescher et al, 2014) are described in detail in Prebble et al (2017).…”

Section: Reconstruction Of Palaeovegetation and Palaeoclimatementioning

confidence: 99%

“…It represents the first and largest cooling episode during the Miocene with a sea-surface temperature decline of ~ 2 C° occurring prior the event 10 (Lear et al, 2004). Mechanisms behind this global cooling event are probably related to late Oligocene atmospheric carbon dioxide levels being near to those of modern times (Pagani et al, 2005;Roth-Nebelsick et al, 2014) and orbital forcing (Zachos et al, 2001;Pälike et al, 2006).…”

mentioning

confidence: 99%

Plants in movement – Floristic and climatic characterization of the New Jersey hinterland during the Palaeogene–Neogene transition in relation to major glaciation events

Prader

Kotthoff

McCarthy

et al. 2018

Preprint

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“…These methods are based on the negative correlation between the stomatal parameters (stomatal density and SI) of fossil leaf cuticles and variation of atmospheric CO 2 concentrations (Kürschner et al, 1998;Bonis and Kürschner, 2010). While reconstructing pCO 2 using plant fossil, SI and SR are semiquantitative with many restrictions (Beerling et al, 2002Konrad et al, 2008;Jordan, 2011;Grein et al, 2011Grein et al, , 2013Roth-Nebelsick et al, 2014).…”

mentioning

confidence: 99%

“…Many scholars have used this model to estimate the pCO 2 levels in the Cenozoic (Grein et al, 2011(Grein et al, , 2013Roth-Nebelsick et al, 2012Sun B.N et al, 2016). The precondition to using this method is that the temperature during the plant growth period should be above 10°C, because the optimum temperature of woody plants for photosynthesis ranges between 10°C-35°C (Grein et al, 2013;Roth-Nebelsick et al, 2014;Sun B.N et al, 2016). It is obvious that palaeoclimatic parameters (temperature and humidity) are important for the reconstruction of atmospheric CO 2 concentration using this model.…”

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confidence: 99%

Middle Cretaceous pCO₂ Variation in Yumen, Gansu Province and its Response to the Climate Events

Lei

et al. 2018

Acta Geologica Sinica (Eng)

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The palaeo‐atmospheric CO2 concentration (pCO2) variation in the Yumen, Gansu Province during the middle Cretaceous has been reconstructed using the newly established plant photosynthetic gas exchange mechanistic model, and the results show that the pCO2 values are in the range of about 550–808 ppmv. The present pCO2 values are higher than the pCO2 results (531–641 ppmv) of the previous study according to the Recent standardization of the stomatal ratio method, and much lower than the pCO2 results (882–1060 ppmv) according to the Carboniferous standardization of the stomatal ratio method. The present pCO2 variation is not only within the error range of GEOCARB II and GEOCARB III but also is similar to the reconstructed results based on the biochemistry and carbon isotope models. Besides, the present Brachyphyllum specimens were collected from four consecutive horizons of the upper Zhonggou Formation of the Hanxia Section, and the reconstructed pCO2 exhibits the reconstructed pCO2 exhibits a decline trend during the late Aptian to early Albian. This decline variation is probably associated with the Oceanic Anoxic Events (OAE1b) and the Cold snap event. With the combination of pCO2 during the Albian to Cenomanian recovered by the plant photosynthetic gas exchange mechanistic model, the pCO2 showed a prominent increase during the late Aptian to early Cenominian, which indicates a response to the greenhouse warming during the middle Cretaceous. Therefore, the mechanical model of the plant photosynthetic gas exchange shows a relatively strong accuracy in the reconstruction of the pCO2 and can reflect a strong relation between the atmospheric CO2 concentrations and climatic events.

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Stomatal density and index data of Platanus neptuni leaf fossils and their evaluation as a CO2 proxy for the Oligocene

Cited by 34 publications

References 50 publications

Dynamics and evolution of Turgay‐type vegetation in Western Siberia throughout the early Oligocene to earliest Miocene—a study based on diversity of plant functional types in the carpological record

Dynamics and evolution of Turgay‐type vegetation in Western Siberia throughout the early Oligocene to earliest Miocene—a study based on diversity of plant functional types in the carpological record

Plants in movement – Floristic and climatic characterization of the New Jersey hinterland during the Palaeogene–Neogene transition in relation to major glaciation events

Middle Cretaceous pCO₂ Variation in Yumen, Gansu Province and its Response to the Climate Events

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Stomatal density and index data of Platanus neptuni leaf fossils and their evaluation as a CO2 proxy for the Oligocene

Cited by 34 publications

References 50 publications

Dynamics and evolution of Turgay‐type vegetation in Western Siberia throughout the early Oligocene to earliest Miocene—a study based on diversity of plant functional types in the carpological record

Dynamics and evolution of Turgay‐type vegetation in Western Siberia throughout the early Oligocene to earliest Miocene—a study based on diversity of plant functional types in the carpological record

Plants in movement – Floristic and climatic characterization of the New Jersey hinterland during the Palaeogene–Neogene transition in relation to major glaciation events

Middle Cretaceous pCO2 Variation in Yumen, Gansu Province and its Response to the Climate Events

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Middle Cretaceous pCO₂ Variation in Yumen, Gansu Province and its Response to the Climate Events