Vegetation and climate changes within and around the Polistovo-Lovatskaya mire system (Pskov Oblast, north-western Russia) during the past 10,500 years

Nosova, Maria; Novenko, Elena; Severova, Elena; Volkova, Olga

doi:10.1007/s00334-018-0693-8

Cited by 13 publications

(17 citation statements)

References 29 publications

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“…However, fossil Betula PARs in the examples considered here are consistently below 6000 grains cm -2 y -1 and published early Holocene values rarely exceed 6000 grains cm -2 y -1 (but see Theuerkauf et al, 2014). Pollen diagrams from the forest steppe ecotone in European Russia are often characterized by high Betula percentage (Nosova et al, 2019;Shumilovskikh et al, 2018 The comparison of regional PARs between traps and fossil estimates indicates higher fossil PAR of Picea, Fagus and Abies in middle altitudes of the temperate zone (Fig. 5), which, in the case of Abies, represents the Europe-wide decline in A. alba (Tinner et al, 2013 in the cover abundance of Picea and Fagus (Abraham et al, 2016;Carter et al, 2018).…”

Section: Analogues For Vegetation Reconstructionmentioning

confidence: 55%

Patterns in recent and Holocene pollen influxes across Europe; the Pollen Monitoring Programme Database as a tool for vegetation reconstruction

Abrahám¹,

Hicks²,

Svobodová-Svitavská³

et al. 2020

Preprint

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Abstract. The collection of modern spatially extensive pollen data are important for the interpretation of fossil pollen diagrams. Such datasets are readily available for percentage data but lacking for pollen accumulation rates (PAR). Filling this gap has been the motivation of the pollen monitoring network, whose contributors monitored pollen deposition in modified Tauber-traps for several years or decades across European latitudes. Here we present this monitoring dataset consisting of 351 trap locations with a total of 2742 annual samples covering the period from 1981 to 2017. This dataset shows that climate parameters correlating with latitude determine pollen productivity. A signal of regional forest cover can be detected in the data, while local tree cover seems more important. Pollen traps situated beyond 200 km of the distribution of the parent tree are still collecting occasional pollen grains of the tree in question. PAR’s of up to 30 grains cm−2yr−1 in fossil diagram should therefore be interpreted as long distance transport. Comparisons to fossil data from the same areas show comparable values. Comparisons often demonstrate that similar high values for temperate taxa in fossils sites are found further south or downhill. While modern situations comparable to high PAR values of some taxa (e.g. Corylus) may be hard to find, CO2 fertilization and land use may case high modern PAR’s that are not documented in the fossil record. The modern data is now publically available in the Neotoma Paleoecology Database and hopefully serves improving interpretations of fossil PAR data.

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Section: Analogues For Vegetation Reconstructionmentioning

confidence: 55%

Patterns in recent and Holocene pollen influxes across Europe; the Pollen Monitoring Programme Database as a tool for vegetation reconstruction

Abrahám¹,

Hicks²,

Svobodová-Svitavská³

et al. 2020

Preprint

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“…The reconstructed mire development covers the entire sequence, including a long-lasting lake stage, fen dominated by green and brown mosses and Sphagnum-dominated oligotrophic bog. That allows us to describe the classic hydroserial succession [5,27,33,34] using not only plant macrofossils but other indicators such as testate amoebae, 13 C and 15 N isotopes, cladocerans and diatoms. To set the mire development in a more general context, we used pollen (to reconstruct regional vegetation, climate and human impact) and macro charcoal (to reconstruct local fire regime) and interpreted the results within the frameworks of the classical "Blytt-Sernander" system modified for the East European Plain by Khotinsky [65].…”

Section: Discussionmentioning

confidence: 99%

“…Other studies [32] also show that during the Boreal stage, with its cold and relatively dry climate, the study area was covered by birch forests with Betula pubescens as principal arboreal species as well as Betula nana and Betula humilis. In the adjacent Priil'men Lowlands between 8000-6000 BC, the landscapes were covered by mixed forests with pine and birch [34]. Probably, the dominance of post-pyrogenic pine-birch forests and the low occurrence of broadleaved species is the result of the high frequency of forest fires noted at that period in the boreo-nemoral zone [66].…”

Section: Boreal Stage (8300-6800 Bc)mentioning

confidence: 99%

“…The area of the present study is located in the marginal part of the Weichselian ice sheet, almost on the border of the Late Glacial Maximum and, thus, provides an important case in understanding the age of peatlands, their developmental stages and human impact. Earlier studies in the southern parts of Valdai Uplands [27,32] and adjacent lowlands [33,34] indicated that peatlands developed through a classic hydroserial succession in the early Holocene with a sharp decline in mineral input by 4200 BC followed by an abrupt transition from fen to bog vegetation around 3500 BC. The evidence for farming and human occupation in the region was detected in pollen records since 500 BC, however, widespread agriculture was observed from the 18th century AD only [32].…”

Section: Introductionmentioning

confidence: 99%

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Peatland Development, Vegetation History, Climate Change and Human Activity in the Valdai Uplands (Central European Russia) during the Holocene: A Multi-Proxy Palaeoecological Study

et al. 2020

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Peatlands are remarkable for their specific biodiversity, crucial role in carbon cycling and climate change. Their deposits preserve organism remains that can be used to reconstruct long-term ecosystem and environmental changes as well as human impact in the prehistorical and historical past. This study presents a new multi-proxy reconstruction of the peatland and vegetation development investigating climate dynamics and human impact at the border between mixed and boreal forests in the Valdai Uplands (the East European Plain, Russia) during most of the Holocene. We performed plant macrofossil, pollen, testate amoeba, Cladocera, diatom, peat humification, loss on ignition, carbon and nitrogen content, δ13C and δ15N analyses supported by radiocarbon dating of the peat deposits from the Krivetskiy Mokh mire. The results of the study indicate that the wetland ecosystem underwent a classic hydroserial succession from a lake (8300 BC–900 BC) terrestrialized through a fen (900 BC–630 AD) to an ombrotrophic bog (630 AD–until present) and responded to climate changes documented over the Holocene. Each stage was associated with clear changes in local diversity of organisms responding mostly to autogenic successional changes during the lake stage and to allogenic factors at the fen-bog stage. The latter can be related to increased human impact and greater sensitivity of peatland ecosystems to external, especially climatic, drivers as compared to lakes.

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“…ka BP suggesting lower lake levels and prevailing dry conditions in Early Holocene. Nosova et al 2018), probably dominated by summer precipitation, which could have additionally contributed to the Middle Holocene d 18 O diatom maximum. A subsequent depletion in d 18 O in both records from c. 9.5 to 8 cal.…”

Section: Temporal Changes In D 18 O Diatom Diatom Taxonomy and Lakementioning

confidence: 99%

Holocene hydrological variability of Lake Ladoga, northwest Russia, as inferred from diatom oxygen isotopes

Kostrova

Meyer

Bailey

et al. 2019

Boreas

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This article presents a new comprehensive assessment of the Holocene hydrological variability of Lake Ladoga, northwest Russia. The reconstruction is based on oxygen isotopes of lacustrine diatom silica (d 18 O diatom ) preserved in sediment core Co 1309, and is complemented by a diatom assemblage analysis and a survey of modern isotope hydrology. The data indicate that Lake Ladoga has existed as a freshwater reservoir since at least 10.8 cal. ka BP. The d 18 O diatom values range from +29.8 to +35.0&, and relatively higher d 18 O diatom values around +34.7& between c. 7.1 and 5.7 cal. ka BP are considered to reflect the Holocene Thermal Maximum. A continuous depletion in d 18 O diatom since c. 6.1 cal. ka BP accelerates after c. 4 cal. ka BP, indicating Middle to Late Holocene cooling that culminates during the interval 0.8-0.2 cal. ka BP, corresponding to the Little Ice Age. Lake-level rises result in lower d 18 O diatom values, whereas lower lake levels cause higher d 18 O diatom values. The diatom isotope record gives an indication for a rather early opening of the Neva River outflow at c. 4.4-4.0 cal. ka BP. Generally, overall high d 18 O diatom values around +33.5& characterize a persistent evaporative lake system throughout the Holocene. As the Lake Ladoga d 18 O diatom record is roughly in line with the 60°N summer insolation, a linkage to broader-scale climate change is likely.

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Vegetation and climate changes within and around the Polistovo-Lovatskaya mire system (Pskov Oblast, north-western Russia) during the past 10,500 years

Cited by 13 publications

References 29 publications

Patterns in recent and Holocene pollen influxes across Europe; the Pollen Monitoring Programme Database as a tool for vegetation reconstruction

Patterns in recent and Holocene pollen influxes across Europe; the Pollen Monitoring Programme Database as a tool for vegetation reconstruction

Peatland Development, Vegetation History, Climate Change and Human Activity in the Valdai Uplands (Central European Russia) during the Holocene: A Multi-Proxy Palaeoecological Study

Holocene hydrological variability of Lake Ladoga, northwest Russia, as inferred from diatom oxygen isotopes

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