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  • 1
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    Carbon and nitrogen composition of the sediment core EN18224-4 from Lake Satagay, Central Yakutia, Siberia (2022)
    PANGAEA
    Details
    Publication Date: 2023-10-16
    Description: This dataset comprises total organic carbon (TOC), total inorganic carbon (TIC) and total nitrogen (TN) from sediment core EN18224-4, retrieved from Lake Satagay in Nyurbinsky District, Central Yakutia. TOC and TIC were observed from every cm of the core except 93-94 cm. TN was observed from 17 samples. The sedimentological analytics were performed in the Sediment laboratory at AWI Potsdam, Germany.
    Keywords: Alaas lake; Alas; AWI Arctic Land Expedition; C/N; Carbon, inorganic, total; Carbon, organic, total; Central Yakutia; Chukotka 2018; Depth, bottom/max; Depth, top/min; Diatoms; Element analyser CNS, LECO, TruMac; Element analyzer, vario Cube SoliTOC; EN18224-4; Hammer-modified gravity core, UWITEC; HGCUWI; Holocene; Lake Satagay; Lake Satagay, Nyurbinsky District, Yakutia, Russia; Lake sediment core; nitrogen; Nitrogen, total; Permafrost; RU-Land_2018_Yakutia; sakha; Siberia; Siberian permafrost; subarctic; thaw lake; thermokarst lake; TOC; Total Inorganic Carbon; Total Organic Carbon; total organic carbon (TOC); XRF; XRF core scanner; XRF data; XRF scanning
    Type: Dataset
    Format: text/tab-separated-values, 465 data points
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  • 2
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    Diatom composition of the sediment core EN18224-4 from Lake Satagay, Central Yakutia, Siberia (2022)
    PANGAEA
    Details
    Publication Date: 2023-10-16
    Description: This dataset contains microscopic diatom counts from the sediment core EN18224-4, retrieved from Lake Satagay in Nyurbinsky District, Central Yakutia. The results include counts of diatom valves observed from 10 samples, total number of counted diatoms, diatom species richness and diatom valve concentration per g sediment mass, all analysed in the diatom laboratory at AWI Potsdam, Germany.
    Keywords: Alaas lake; Alas; Amphora libyca; Aulacoseira ambigua; Aulacoseira spp.; Aulacoseira subarctica; AWI Arctic Land Expedition; C/N; Calculated; Central Yakutia; Chukotka 2018; Cocconeis placentula; Craticula cuspidata; Cyclotella radiosa; Cymbella cistula; Cymbella lanceolata; Denticula kuetzingii; Denticula spp.; Depth, bottom/max; Depth, top/min; Diatoms; Diatoms, valves; EN18224-4; Encyonema silesiacum; Epithemia adnata; Epithemia turgida; Eunotia spp.; Fragilaria capucina; Fragilaria dilatata; Gomphonema acuminatum; Gomphonema coronatum; Gomphonema truncatum; Hammer-modified gravity core, UWITEC; Hantzschia amphioxys; HGCUWI; Holocene; Lake Satagay; Lake Satagay, Nyurbinsky District, Yakutia, Russia; Lake sediment core; Light microscope, Zeiss, Axio Scope.A1; Navicula longicephala; Navicula oblonga; Navicula radiosa; Navicula reinhardtii; Navicula spp.; Navicula symmetrica; nitrogen; Nitzschia spp.; Permafrost; Pseudostaurosira brevistriata; RU-Land_2018_Yakutia; sakha; Sellaphora spp.; Siberia; Siberian permafrost; Species richness; Stauroneis anceps; Stauroneis spp.; Staurosira binodis; Staurosira construens; Staurosira venter; Staurosirella pinnata; Stephanodiscus hantzschii; subarctic; thaw lake; thermokarst lake; TOC; Total Inorganic Carbon; Total Organic Carbon; total organic carbon (TOC); Ulnaria ulna; XRF; XRF core scanner; XRF data; XRF scanning
    Type: Dataset
    Format: text/tab-separated-values, 430 data points
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  • 3
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    Diatom- and biogeochemical composition of the sediment core EN18224-4 from Lake Satagay, Central Yakutia, Siberia (2022)
    PANGAEA
    Details
    Publication Date: 2024-02-06
    Description: This dataset compiles paleoenvironmental and biogeochemical data from the sediment core EN18224-4, retrieved from Lake Satagay in Nyurbinsky District, Central Yakutia. Included are results of (I) microscopic diatom counts, as well as biogeochemical data comprising (II) total organic carbon (TOC), total inorganic carbon (TIC) and total nitrogen (TN), and (III) elemental distributions from high-resolution sediment core X-ray fluorescence (XRF) scanning. The dataset has been described in more detail in Baisheva et al. (2022a). Related metabarcoding results of sedimentary ancient DNA of macrophytes, can be found in Baisheva et al. (2022b, see further details).
    Keywords: Alaas lake; Alas; AWI_Envi; C/N; Central Yakutia; Diatoms; Holocene; Lake sediment core; nitrogen; Permafrost; Polar Terrestrial Environmental Systems @ AWI; sakha; Siberia; Siberian permafrost; subarctic; thaw lake; thermokarst lake; TOC; Total Inorganic Carbon; Total Organic Carbon; total organic carbon (TOC); XRF; XRF core scanner; XRF data; XRF scanning
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 4
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    Summer anorganic hydrochemistry (cations and anions) of thermokarst lakes in the Central Yakutian Lowland and mountain lakes in the Verkhoyansk Mountain Range in Eastern Yakutia (2023)
    PANGAEA
    Details
    Publication Date: 2024-02-16
    Description: Between 6th August and 2nd September, 2021, a total of 66 lakes in Central and Eastern Yakutia were assessed as part of the joint Russian-German expedition (NEFU-AWI; RU-Land_2021_Yakutia). Samples and data were obtained with a large variety of different methods and for a wide range of sampling purposes. This dataset presents the results of hydrochemical laboratory analyses of ion concentration. Of those 66 hydrochemical analyses, 15 are from mountain lakes located within the Verkhoyansk mountain range, at the eastern end of the expedition route, including mostly intermontane basin or glacial lakes (average elevation: c. 1080 m a.s.l.). 13 lakes were sampled in Oymyakonsky District and two lakes in Tomponsky District. The hydrochemical dataset from the other 52 lakes that lie within the eastern extent of the Central Yakutian Lowland (average elevation: c. 190 m a.s.l.) represents thermokarst lakes. Thermokarst lakes originate from thawing of ice-rich permafrost and were found in different stages of their development, with a wide range of anthropogenic impact. These 52 thermokarst lakes include seven lakes within the Churapchinsky District, two are located in the Tattinsky District further east within a freshly burned forest. 42 lakes are located in Megino-Kangalassky District, of which 17 lakes are around Tungulu, and 24 lakes around Maya settlements.
    Keywords: Alaas lake; Alas; Aluminium; AWI_Envi; AWI Arctic Land Expedition; Barium 2+; Bicarbonate ion; Bromide; Calcium; Campaign; Central Yakutia; Chloride; Churapchinsky District; Country; DATE/TIME; DEPTH, water; Eastern Yakutia; ELEVATION; EN21401; EN21402; EN21403; EN21404; EN21405; EN21406; EN21407; EN21408; EN21409; EN21410; EN21411; EN21412; EN21413; EN21414; EN21415; EN21416; EN21417; EN21418; EN21419; EN21420; EN21421; EN21422; EN21423; EN21424; EN21425; EN21426; EN21426-2; EN21427; EN21428; EN21429; EN21430; EN21431; EN21432; EN21433; EN21434; EN21435; EN21436; EN21437; EN21438; EN21439; EN21440; EN21441; EN21442; EN21443; EN21444; EN21445; EN21446; EN21447; EN21448; EN21449; EN21450; EN21451; EN21452; EN21453; EN21454; EN21455; EN21456; EN21457; EN21458; EN21459; EN21462; EN21463; EN21464; EN21465; EN21466; EN21467; Event label; Fluoride; hydrochemical parameters; Hydrochemistry; Inductively coupled plasma optical emission spectrometry (ICP-OES), Perkin-Elmer, Optima 8300DV; Ion Chromatography System (ICS), Thermo Scientific, Dionex ICS-2100; Ion composition; Ionic composition; ions; Iron; Lake; LAKE; lake water; Latitude of event; Lena-Amga interfluve; Location; Longitude of event; Magnesium; Manganese; Megino-Kangalassky District; mountain lakes; Nitrate; Oymyakonsky District; Permafrost; Phosphate; Phosphorus; Polar Terrestrial Environmental Systems @ AWI; Potassium; Potentiometric pH endpoint titration (HCO3 / alkalinity), 794 Basic Titrino, Metrohm; RU-Land_2021_Yakutia; Sample code/label; Sampling lake; Silicon; Sodium; Strontium 2+; subarctic; Sulfate; taiga; Tattinsky District; thaw lake; Tomponsky District; water chemistry; Yakutia
    Type: Dataset
    Format: text/tab-separated-values, 1467 data points
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  • 5
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    Element composition of the sediment core EN18224-4 from Lake Satagay, Central Yakutia, Siberia (2022)
    PANGAEA
    Details
    Publication Date: 2024-04-11
    Description: This dataset comprises elemental distributions from high-resolution sediment core X-ray fluorescence (XRF) scanning from the sediment core EN18224-4, retrieved from Lake Satagay in Nyurbinsky District, Central Yakutia. The high-resolution XRF-derived element distributions consist of 24 elements, measured across the core in 2 mm steps at the Bundesanstalt für Geowissenschaften und Rohstoffe (BGR), Berlin, Germany.
    Keywords: Alaas lake; Alas; Aluminium; AWI Arctic Land Expedition; Bismuth; Bromine; C/N; Calcium; Central Yakutia; Chlorine; Chromium; Chukotka 2018; Copper; Depth, composite; Diatoms; EN18224-4; Gallium; Hammer-modified gravity core, UWITEC; HGCUWI; Holocene; Iron; Lake Satagay; Lake Satagay, Nyurbinsky District, Yakutia, Russia; Lake sediment core; Lead; Manganese; Molybdenum; Niobium; nitrogen; Permafrost; Phosphorus; Potassium; Rhodium; Rubidium; RU-Land_2018_Yakutia; sakha; Siberia; Siberian permafrost; Silicon; Strontium; subarctic; Sulfur; thaw lake; thermokarst lake; Titanium; TOC; Total Inorganic Carbon; Total Organic Carbon; total organic carbon (TOC); X-ray fluorescence core scanner (XRF), Avaatech; XRF; XRF core scanner; XRF data; XRF scanning; Yttrium; Zinc; Zirconium
    Type: Dataset
    Format: text/tab-separated-values, 13777 data points
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  • 6
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    Macroscopic charcoal record from Lake Khamra, Yakutia, Russia (2020)
    PANGAEA
    In:  Alfred Wegener Institute - Research Unit Potsdam
    Details
    Publication Date: 2024-04-12
    Description: High-resolution, continuously sampled charcoal records from sedimentary archives are rare in Eastern Siberia. These datasets from Lake Khamra (59°59'N, 112°59'E) in SW Yakutia, Russia, comprise the following data: (I) Macroscopic charcoal record (〉 150 µm) from lake sediment core EN18232-3, including the total amount of particles per sample as well as their respective distributions in size classes (150-300 µm, 300-500 µm, 〉 500 µm) and morphotypes (II) Radiocarbon age dating results from core EN18232-3 (AWI MICADAS) (III) Radiometric age dating results for 210Pb and 137Cs (Pb/Cs) from the parallel short core EN18232-2 (University of Liverpool Environmental Radioactivity Laboratory) More detailed information about the charcoal record and an approach to age-depth modelling can be found in the research paper.
    Keywords: Arctic; AWI_Envi; AWI Arctic Land Expedition; Boreal; charcoal; Chukotka 2018; EN18232-2; EN18232-3; fire; Forest; GCUWI; Gravity corer, UWITEC; Hammer-modified gravity core, UWITEC; HGCUWI; lake; Lake Khamra; Lake Khamra, SW Yakutia, Russia; macroscopic; morphotype; Polar Terrestrial Environmental Systems @ AWI; RU-Land_2018_Yakutia; Russia; sakha; sediment; Siberia; Yakutia
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 7
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    Macroscopic charcoal counts from Lake Khamra, Yakutia, Russia (2020)
    PANGAEA
    Details
    Publication Date: 2024-04-12
    Keywords: Arctic; AWI_Envi; AWI Arctic Land Expedition; Boreal; charcoal; Charcoal; Charcoal morphotype; Chukotka 2018; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EN18232-3; fire; Forest; Hammer-modified gravity core, UWITEC; HGCUWI; lake; Lake Khamra; Lake Khamra, SW Yakutia, Russia; macroscopic; morphotype; Polar Terrestrial Environmental Systems @ AWI; RU-Land_2018_Yakutia; Russia; sakha; sediment; Siberia; Volume; Yakutia
    Type: Dataset
    Format: text/tab-separated-values, 5064 data points
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  • 8
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    Radiocarbon age dating results from Lake Khamra, Yakutia, Russia (2020)
    PANGAEA
    Details
    Publication Date: 2024-04-12
    Keywords: Age, 14C adjusted for age-offset; Age, 14C calibrated Clam v. 2.3.5 (Blaauw 2010) with IntCal20 (Reimer et al. 2020); Age, dated; Age, dated material; Age, dated standard deviation; Arctic; AWI_Envi; AWI Arctic Land Expedition; Boreal; Carbon; charcoal; Chukotka 2018; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Description; EN18232-3; fire; Forest; Fraction modern carbon; Fraction modern carbon, standard deviation; Hammer-modified gravity core, UWITEC; HGCUWI; lake; Lake Khamra; Lake Khamra, SW Yakutia, Russia; macroscopic; Mini Carbon Dating System (MICADAS); morphotype; Polar Terrestrial Environmental Systems @ AWI; RU-Land_2018_Yakutia; Russia; sakha; Sample ID; sediment; Siberia; Yakutia
    Type: Dataset
    Format: text/tab-separated-values, 196 data points
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  • 9
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    Charcoal and pollen records from Lake Satagay, Yakutia, Russia (2022)
    PANGAEA
    Details
    Publication Date: 2024-02-06
    Description: These datasets of sediment core EN18224-4 from Lake Satagay (63°04'40.8N 117°59'52.8E), Central Yakutia, Russia, comprise the following data: (I) Radiocarbon age dating results by AWI MICADAS; (II) continuous macroscopic charcoal counts (〉 150 µm), including the sum of particles per sample, their respective distributions in size classes (〉150 µm, 300-500 µm, 〉 500 µm) and morphotype groups, as well as a low-resolution record of microscopic charcoal concentration from pollen slides (III) pollen and non-pollen palynomorph counts. The datasets have been described in more detail in the accompanying research paper. Metabarcoding results of sedimentary ancient DNA of terrestrial plants, also featured in the research paper, will be uploaded to the Dryad database (datadryad.org).
    Keywords: AWI_Envi; AWI Arctic Land Expedition; Central Yakutia; charcoal; Chukotka 2018; EN18224-4; fire; Hammer-modified gravity core, UWITEC; HGCUWI; lake; Lake Satagay; Lake Satagay, Nyurbinsky District, Yakutia, Russia; Larch; morphotypes; palynomorphs; Polar Terrestrial Environmental Systems @ AWI; Pollen; REVEALS; RU-Land_2018_Yakutia; Russia; sakha; sediment; Siberia; subarctic; taiga; Vegetation; Yakutia
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 10
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    Pollen records from Lake Satagay, Yakutia, Russia (2022)
    PANGAEA
    Details
    Publication Date: 2024-02-06
    Description: These datasets of sediment core EN18224-4 from Lake Satagay (63°04'40.8N 117°59'52.8E), Central Yakutia, Russia, comprise the following data: (I) Radiocarbon age dating results by AWI MICADAS; (II) continuous macroscopic charcoal counts (〉 150 µm), including the sum of particles per sample, their respective distributions in size classes (〉150 µm, 300-500 µm, 〉 500 µm) and morphotype groups, as well as a low-resolution record of microscopic charcoal concentration from pollen slides (III) pollen and non-pollen palynomorph counts. The datasets have been described in more detail in the accompanying research paper. Metabarcoding results of sedimentary ancient DNA of terrestrial plants, also featured in the research paper, will be uploaded to the Dryad database (datadryad.org).
    Keywords: Abies; Algae; Alnus; Artemisia; Asteraceae; AWI_Envi; AWI Arctic Land Expedition; Betula; Bryozoa; Caryophyllaceae; Central Yakutia; charcoal; Chenopodiaceae; Chukotka 2018; Counting, palynology; Cupressaceae; Cyperaceae; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; EN18224-4; Ericaceae; Fabaceae; fire; Hammer-modified gravity core, UWITEC; HGCUWI; Humulus; lake; Lake Satagay; Lake Satagay, Nyurbinsky District, Yakutia, Russia; Lamiaceae; Larch; Larix; Liliaceae; Lycopodium (added); Lycopodium (counted); morphotypes; Onagraceae; palynomorphs; Picea; Pinus; Poaceae; Polar Terrestrial Environmental Systems @ AWI; Pollen; Polygonaceae; Polypodiaceae; Ranunculaceae; REVEALS; Rosaceae; Rubus; RU-Land_2018_Yakutia; Russia; sakha; Salix; Sanguisorba; sediment; Selaginella rupestris; Siberia; Spiraea; Spores, trilete; subarctic; taiga; Thalictrum; Tsuga; Typha; Urtica; Vegetation; Volume; Yakutia
    Type: Dataset
    Format: text/tab-separated-values, 1875 data points
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