Database of Subfossil Pollen Spectra from Territory of Russia and Adjacent Countries as a Tool for Paleoecological Research

Чепурная, А. А.; Новенко, Е. Ю.

doi:10.15356/0373-2444-2015-1-119-128

Cited by 3 publications

(2 citation statements)

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“…The approach is based on analogue matching of fossil pollen assemblages to modern pollen data sets and was originally developed by Overpeck et al (1985) and extended by Nakagawa et al (2002); full details are presented in Novenko et al (2014, 2015). The modern calibration dataset consisted of 720 surface pollen samples from a wide variety of landscapes in Europe and West Siberia (30–55°N, 45–65°E) from the European Pollen Database (Davis et al, 2013) and the Russian Pollen Database (Chepurnaya and Novenko, 2015). We estimated the proportion of forest cover within a radius of 20 km using MODIS satellite images and Vegetation Continuous Fields estimates of modern tree cover (Hansen et al, 2005) for each location.…”

Section: Methodsmentioning

confidence: 99%

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Forest history, peatland development and mid- to late Holocene environmental change in the southern taiga forest of central European Russia

et al. 2017

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Understanding the long-term ecological dynamics of boreal forests is essential for assessment of the possible responses and feedbacks of forest ecosystems to climate change. New data on past forest dynamics and peatland development were obtained from a peat sequence in the southern Valdai Hills (European Russia) based on pollen, plant macrofossil, micro-charcoal, peat humification, and testate amoeba analyses. The results demonstrate a dominance of broadleaved forests in the study area from 7000–4000 cal yr BP. Picea was initially a minor component of this forest but increased in cover rapidly with climatic cooling beginning at 4000 cal yr BP, becoming the dominant species. Broadleaved species persisted until 900 cal yr BP, with evidence for intensified felling and forest management over recent centuries. Over the last four hundred years there is evidence for widespread paludification and the establishment of Picea-Sphagnum forests. These data demonstrate how modern wet woodlands have been shaped by a combination of climatic and anthropogenic factors over several millennia. The results also demonstrate the value of a multiproxy approach in understanding long-term forest ecology.

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Section: Methodsmentioning

confidence: 99%

“…Database (Chepurnaya and Novenko, 2015). For each location we estimated the proportion of forest cover within a radius of 20 km using MODIS satellite images and Vegetation Continuous Fields estimates of modern tree cover (Hansen et al, 2005).…”

Section: And the Russian Pollenmentioning

confidence: 99%

Forest history, peatland development and mid- to late Holocene environmental change in the southern taiga forest of central European Russia

et al. 2017

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The Occurrence of Carpinus, Fagus, Tilia, and Quercus Pollen in Subrecent Spore–Pollen Spectra from the East European Plain: On the Possibility of Long-Distance Pollen Transfer

2018

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Hydrocarbons-biomarkers and palynological characteristics of peat of the Mezen-Vychegda plain

Burdelnaya

Golubeva

Бушнев

2022

Vestnik of Geosciences

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The peat from the Cherny Yar section at the Vychegda river was studied by a complex of palynological and geochemical methods. We determined that among the aliphatic hydrocarbons of bitumen, the maximum concentrations were characteristic for odd n-alkanes with a predominance of C27-C31 homologues, as well as 18-norabietane. Aromatic hydrocarbons are mainly represented by structures formed during the fossilization of diterpenoids and triterpenoids of higher vegetation. Among the aromatic diterpenoids, there are 18-norabieta-8,11,13-triene, 18-norsimonellite and retene, which are markers of conifers, as well as 18-norabietane of the aliphatic fraction. Among the aromatic triterpenoids, numerous transformation products of compounds with the carbon skeleton of lupan, oleanan, and ursane, characteristic of angiosperms, have been identified. For example, dinorolean(ursa)-1,3,5(10),13(18)-tetraene, dinorolean(ursa)-1,3,5(10)-triene, pentanoroleana-1,3,5(10), 6,8,11,13,17(18)-octaene and others. The data on the composition of hydrocarbons confirm the palynological data about the presence of coniferous and hardwood pollen in the composition of peat. The change in the composition of hydrocarbons along the section confirms the change in the species composition of vegetation in the study area, diagnosed by microfossils. The comparison of the composition of peat biomarker hydrocarbons with palynological data revealed their consistency with each other and possibility of conjugated use of these methods in paleogeographic reconstructions.

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Database of Subfossil Pollen Spectra from Territory of Russia and Adjacent Countries as a Tool for Paleoecological Research

Cited by 3 publications

References 2 publications

Forest history, peatland development and mid- to late Holocene environmental change in the southern taiga forest of central European Russia

Forest history, peatland development and mid- to late Holocene environmental change in the southern taiga forest of central European Russia

The Occurrence of Carpinus, Fagus, Tilia, and Quercus Pollen in Subrecent Spore–Pollen Spectra from the East European Plain: On the Possibility of Long-Distance Pollen Transfer

Hydrocarbons-biomarkers and palynological characteristics of peat of the Mezen-Vychegda plain

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