Spring temperature variability and eutrophication history inferred from sedimentary pigments in the varved sediments of Lake Żabińskie, north-eastern Poland, AD 1907–2008

Amann, Benjamin; Lobsiger, Simon; Fischer, Daniela; Tylmann, Wojciech; Bonk, Alicja; Filipiak, Janusz; Grosjean, Martín

doi:10.1016/j.gloplacha.2014.10.008

Cited by 31 publications

(52 citation statements)

References 66 publications

(93 reference statements)

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“…The exceptional scientific value of this site is due to a very good preservation of varves in the sediments and high sedimentation rates which allow high-resolution (annual) analysis of different proxies. The lake already showed its high potential for quantitative paleoenvironmental reconstructions (Amann et al, 2014;Hernández-Almeida et al, 2015;Larocque-Tobler et al, 2015). Therefore, the best possible accuracy of the chronology is crucial for the reliability of the millennial-long climate reconstructions derived from the sediments of this lake.…”

Section: Introductionmentioning

confidence: 99%

Comparing Varve Counting And 14C-Ams Chronologies In The Sediments Of Lake Żabińskie, Northeastern Poland: Implications For Accurate 14C Dating Of Lake Sediments

et al. 2015

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Varved lake sediments from Lake Żabińskie (northeastern Poland) provide a highresolution calendar-year chronology which allows validation of 14 C dating results. Microscopic analysis of the varve microfacies revealed that laminations found in Lake Żabińskie were biogenic (calcite) varves. Three independent counts indicated a good preservation quality of laminae in the 348 cm long sediment profile which contained 1000 +12 / -24 varves. The varve chronology was validated with the 137 Cs activity peaks, the tephra horizon from the Askja eruption at AD 1875 and with the timing of major land-use changes of known age inferred from pollen analysis. 32 AMS 14 C dates of terrestrial macrofossils distributed along the profile were compared with the varve chronology. After identification of outliers, the free-shape model performed with 21 14 C dates provided the best possible fit with the varve chronology. We observed almost ideal consistency between both chronologies from the present until AD 1250 while in the lower part (AD 1000-1250) the difference increases to ca. 25 years. We demonstrate that this offset can be explained by too old radiocarbon ages of plant remains transported to the lake by the inflowing creek. Results of this study highlight that careful interpretation of radiocarbon age-depth models is necessary, especially in lakes where no annual laminations are observed and no independent method are used for cross-validation.

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Section: Introductionmentioning

confidence: 99%

Comparing Varve Counting And 14C-Ams Chronologies In The Sediments Of Lake Żabińskie, Northeastern Poland: Implications For Accurate 14C Dating Of Lake Sediments

et al. 2015

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“…23,25,27,29,30,46,47 These authors used point measurement photospectrometers typically with a spectral resolution of 10 nm, a spatial resolution (sensor field) of 2 to 8 mm and manual operation. The SCS, in comparison, improves the spatial resolution by about two orders of magnitude (pixel size up to 40 μm) and has a better spectral resolution (2.8 nm).…”

Section: Scs-vnir Imaging and Methodologymentioning

confidence: 99%

“…The spatial resolution of data points generated by the hyperspectral SCS imaging technique is three to four orders of magnitude larger than what is possible and considered "high resolution" with wet chemical techniques (e.g., for photopigment analysis by HPLC). 30,40 The methodology outlined in Sec. 2 of this article is customized for scientists not familiar with remote sensing technologies, enabling them to acquire high-quality data and generate standard output products for spectral indices and sediment proxies that are well established in the environmental and paleoclimate literature (Refs.…”

Section: Scs-vnir Imaging and Methodologymentioning

confidence: 99%

“…2 of this article is customized for scientists not familiar with remote sensing technologies, enabling them to acquire high-quality data and generate standard output products for spectral indices and sediment proxies that are well established in the environmental and paleoclimate literature (Refs. 23,25,30, and references therein).…”

Section: Scs-vnir Imaging and Methodologymentioning

confidence: 99%

“…In these cases, spectral data could be used as high-resolution proxies for quantitative climate reconstructions. [26][27][28][29][30][31][32] In this study, we use a VNIR imaging spectrometer designed for use as a sediment core-scanning system and present a case study for spectral analysis of fresh lake sediments. First, we describe the technical equipment and the general methodology (workflow) that was used to acquire and process the spectral data.…”

Section: Introductionmentioning

confidence: 99%

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Hyperspectral imaging spectroscopy: a promising method for the biogeochemical analysis of lake sediments

Butz

Grosjean

Fischer

et al. 2015

J. Appl. Remote Sens

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102

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Abstract. We investigate the potential of hyperspectral imaging spectrometry for the analysis of fresh sediment cores. A sediment-core-scanning system equipped with a camera working in the visual to near-infrared range (400 to 1000 nm) is described and a general methodology for processing and calibrating spectral data from sediments is proposed. We present an application from organic sediments of Lake Jaczno, a freshwater lake with biochemical varves in northern Poland. The sedimentary pigment bacteriopheophytin a (BPhe a) is diagnostic for anoxia in lakes and, therefore, an important ecological indicator. Calibration of the spectral data (BPhe a absorption ∼800 to 900 nm) to absolute BPhe a concentrations, as measured by high-performance-liquid-chromatography, reveals that sedimentary BPhe a concentrations can be estimated from spectral data with a model uncertainty of ∼10%. Based on this calibration model, we use the hyperspectral data from the sediment core to produce high-resolution intensity maps and time series of relative BPhe a concentrations (∼10 to 20 data points per year, pixel resolution 70 × 70 μm 2 ). We conclude that hyperspectral imaging is a very cost-and time-efficient method for the analysis of lake sediments and provides insight into the spatiotemporal structures of biogeochemical species at a degree of detail that is not possible with wet chemical analyses. © 2015 Society of Photo-Optical Instrumentation Engineers (SPIE)

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Initial Research of Climate Change in Poland

Falarz

Opała‐Owczarek

Niedźwiedź

et al. 2021

Climate Change in Poland

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Spring temperature variability and eutrophication history inferred from sedimentary pigments in the varved sediments of Lake Żabińskie, north-eastern Poland, AD 1907–2008

Cited by 31 publications

References 66 publications

Comparing Varve Counting And <sup>14</sup>C-Ams Chronologies In The Sediments Of Lake Żabińskie, Northeastern Poland: Implications For Accurate <sup>14</sup>C Dating Of Lake Sediments

Comparing Varve Counting And <sup>14</sup>C-Ams Chronologies In The Sediments Of Lake Żabińskie, Northeastern Poland: Implications For Accurate <sup>14</sup>C Dating Of Lake Sediments

Hyperspectral imaging spectroscopy: a promising method for the biogeochemical analysis of lake sediments

Initial Research of Climate Change in Poland

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