Holocene vegetation and hydroclimatic dynamics in SE Lithuania – Implications from a multi-proxy study of the Čepkeliai bog

Stančikaitė, Miglė; Gedminienė, Laura; Edvardsson, Johannes; Stoffel, Markus; Corona, Christophe; Gryguc, Gražyna; Uogintas, Domas; Zinkutė, Rimantė; Skuratovič, Žana; Taraškevičius, Ričardas

doi:10.1016/j.quaint.2017.08.039

Cited by 21 publications

(14 citation statements)

References 92 publications

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“…In the upper part of the column (at about 252 cm, 850 cal y BP), there was another peak of carbonates where the concentration of CaO changed from 3% to 20%. Similar changes were also observed in the region during the Subatlantic period [28,31]. Such a sharp increase in carbonates may also be associated with the spread of coniferous species in the region [2] as a result of the more humid climate [31].…”

Section: Chemogenic Depositssupporting

confidence: 69%

Geochemical Approach to the Reconstruction of Sedimentation Processes in Kamyshovoye Lake (SE Baltic, Russia) during the Late Glacial and Holocene

et al. 2020

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The article is devoted to a reconstruction of the sedimentation processes in Kamyshovoye Lake (the Kaliningrad Region, Russia) during the Late Glacial and Holocene. The results of the geochemical analysis of Kamyshovoye Lake’s bottom sediments, accompanied by statistical processing and detailed radiocarbon dating, are presented. It was established that a high proportion of mineral matter dominated in the intervals between 15,000 and 11,400 and between 1400 and 600 cal y BP; enrichment with carbonates was noted between 11,400 and 5200 cal y BP and during the past 600 years; and a high percentage of organic matter was recorded between 7800 and 600 cal y BP. We conclude that the increase in mineral matter was influenced by such factors as reduced vegetation cover due to natural and anthropogenic processes, aeolian transfer, and dead-ice melting during the Late Glacial. The increase in carbonate matter was mainly associated with humidity and the reduction conditions of the lake ecosystem. Organogenic matter content was affected by the autochthonic (biological) productivity of the lake, which directly depends on more favorable climatic conditions.

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Section: Chemogenic Depositssupporting

confidence: 69%

Geochemical Approach to the Reconstruction of Sedimentation Processes in Kamyshovoye Lake (SE Baltic, Russia) during the Late Glacial and Holocene

et al. 2020

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“…There are several mineral substrate islands and 21 small lakes inside the peatland. The average depth of the organic layers is about 2.3 m but it can be as much as 16.5 m locally (Stančikaitė et al, 2017). Vegetation differs greatly between the two areas (raised bog and fen) of the Čepkeliai peatland.…”

Section: Study Areamentioning

confidence: 99%

“…The average depth of the organic layers is about 2.3 m but it can be as much as 16.5 m locally (Stančikaitė et al, 2017). There are several mineral substrate islands and 21 small lakes inside the peatland.…”

Section: Study Areamentioning

confidence: 99%

Peatland degradation: The relationship between raised bog hydrology and normalized difference vegetation index

et al. 2019

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Peatlands are recognized as important landscape elements and their disturbance, followed by the loss of their ecohydrological functions, leads to falling water tables and degradation. Sometimes, the shortage of hydrological monitoring data impedes the detection of degrading peatland areas. The application of cost-effective remote sensing methods for assessment of humidity conditions permits monitoring of a large area and longer periods of time. Therefore, in this study, we assessed the links between hydrological parameters and the normalized difference vegetation index (NDVI) as well as identifying spatio-temporal patterns in the condition of raised bog vegetation, according to NDVI, in the Čepkeliai raised bog, a semipristine peatland in south-eastern Lithuania. Time series of NDVI (2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017)(2018) were obtained from the moderate resolution imaging spectroradiometer and compared with field measurements. A strong positive correlation between NDVI and water table depth was found. Moderate (for the whole raised bog) and strong (for control subbasin) positive correlations between NDVI avg and annual minimum flow over 30 and 7 days were found. This confirms that NDVI could be treated as an appropriate indicator, showing the degradation processes of the raised bog ecosystem and could be applied in its management. Analysis of the interannual NDVI avg variation confirmed the prevalence of stable favourable conditions during the growing season with a slight decrease in NDVI max over last 4 years. Meanwhile, analysis of spatial NDVI variation revealed obvious spatial patterns where possible degradation processes tend to appear. KEYWORDSNDVI, peatland degradation, peatland water resources, raised bog, water table depth

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“…2017; Stančikaitė et al . 2019). Therefore, the percentage of Corylus pollen was calculated as an indicator of warm conditions (Fig.…”

Section: Resultsmentioning

confidence: 99%

Mineral magnetism variables as potential indicators of permafrost aggradation and degradation at the southern edge of the permafrost zone, Northeast China

Zhu

Wang

et al. 2021

Boreas

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The northern Greater Khingan Range is located in northernmost Northeast China on the southern edge of the permafrost zone of the Northern Hemisphere. Isolated, sporadic and continuous permafrost belts are distributed from the southeast to the northwest in this area. Sixteen surface soil samples were collected from the three permafrost belts, and a 30‐cm‐deep soil profile was sampled from the continuous permafrost belt. A 70‐cm‐long sediment core was recovered from a small lake in the continuous permafrost belt. Measurements of mineral magnetism and analysis of total organic carbon (TOC) and total nitrogen (TN) were performed on the soil samples, while mineral magnetism measurements, pollen analysis and accelerator mass spectrometry (AMS) 14C dating were made on the lake sediment samples. The purpose was to explore whether the mineral magnetism of the soils and sediments in combination with TOC, C/N and pollen data would be indicative of recent and past permafrost alterations. Stable single domain (SSD) ferrimagnets were rarer in relative and/or absolute terms in the surficial isolated‐sporadic permafrost and the upper horizons of the soil profile, suggesting stronger gleization and thawing. The variations in TOC and C/N support these inferences. Temporal changes in mineral magnetism of the sediment core indicate varying pedogenesis and gleization and permafrost aggradations and degradations in the catchment and shifts of the permafrost belts over the past ~1000 years. The reconstructed permafrost alterations attributable to local climate changes suggested by the pollen data can be related to northern hemispheric and regional climate changes in the past ~1000 years and are helpful for predicting migrations of the permafrost belts in the future.

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Holocene vegetation and hydroclimatic dynamics in SE Lithuania – Implications from a multi-proxy study of the Čepkeliai bog

Cited by 21 publications

References 92 publications

Geochemical Approach to the Reconstruction of Sedimentation Processes in Kamyshovoye Lake (SE Baltic, Russia) during the Late Glacial and Holocene

Geochemical Approach to the Reconstruction of Sedimentation Processes in Kamyshovoye Lake (SE Baltic, Russia) during the Late Glacial and Holocene

Peatland degradation: The relationship between raised bog hydrology and normalized difference vegetation index

Mineral magnetism variables as potential indicators of permafrost aggradation and degradation at the southern edge of the permafrost zone, Northeast China

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