| _version_ | 1867170125883375616 |
|---|---|
| author | Stieg, Amelie Biskaborn, Boris K Herzschuh, Ulrike Pestryakova, Luidmila A Meyer, Hanno |
| author_facet | Stieg, Amelie Biskaborn, Boris K Herzschuh, Ulrike Pestryakova, Luidmila A Meyer, Hanno |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | This data set is an extension to the previously published data in a bundled publication (Stieg et al., 2024a) from the Russian Lake Khamra (59.99°N, 112.98°E, 340 m a.s.l.), located in eastern Siberia in SW Yakutia. The short core (EN18232-1) was retrieved in summer 2018 and subsampled in 2021 in 39 continuous 1 cm increments covering the last 220 years (ca. 2015-1790 CE). Detailed information about the age-depth model of the short core EN18232-1 can be found in the research paper (Stieg et al., 2024b). We provide diatom assemblage data for the 39 samples of the short core EN18232-1. We used aliquots of 0.10 g freeze-dried sample material. The slide preparation followed the common procedure (Battarbee et al., 2001). 5 ml of Microsphere suspension (2 x 10^6 microspheres ml-1) were added to estimate the diatom valve concentration (DVC, valves g-1). We used a ZEISS AXIO Scope.A1 light microscope with a Plan-Apochromat 100x/ 1.4 Oil Ph3 objective at 1000x magnification to identify diatom species to lowest possible taxonomic level. We counted a minimum of 350 diatom valves in each sample (mean: 391 valves). To assess the diatom valve dissolution, we determined the F index by dividing the diatom counts into dissolved and pristine categories. The F index has a total range between 0 and 1, whereby 1 equals a perfect preservation. We calculated the diatom accumulation rates (DARs, 10^9 valves m-2 a-1) by multiplying DVC with mass accumulation rates (MAR, g cm-2 a-1), available in a previous published data set (Stieg et al., 2024c), and multiplying it by 100. Additionally, we estimated scales of Mallomonas and Crysophyt cysts without further specification. More details according to the methods can be found in Stieg et al. (in process). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_971296 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Diatom assemblage of the sediment short core EN18232-1, Lake Khamra, Siberia Stieg, Amelie Biskaborn, Boris K Herzschuh, Ulrike Pestryakova, Luidmila A Meyer, Hanno Accumulation rate, diatoms per year; Achnanthes pusilla; Achnanthidium linearioides; Adlafia minuscula var. minuscula; Age; AGE; Amphora inariensis; Amphora ovalis; Amphora pediculus; Asterionella formosa; Aulacoseira ambigua; Aulacoseira cf. pusilla; Aulacoseira cf. valida; Aulacoseira subarctica; AWI_Envi; AWI Arctic Land Expedition; Brachysira cf. neoexilis; Caloneis cf. fusus; Cavinula cocconeiformis; Cavinula lapidosa; Cavinula pseudoscutiformis; Chrysophyte cysts; Chukotka 2018; Cocconeis placentula; Counting, diatoms; Cyclostephanos cf. invisitatus; Cymbella aspera; Cymbella cymbiformis; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Diatom; Diatom assemblage; Diatom dissolution index; Diatoms, valves; Diatom valves, per unit sediment mass; Diploneis oculata; Diploneis parma; Discostella ocellata; Discostella stelligera; EN18232-1; Encyonema minutum; Encyonema silesiacum; Epithemia adnata; Eunotia ambivalens; Eunotia curtagrunowii; Eunotia faba; Event label; Fragilaria capucina; Fragilaria cf. mesolepta; Fragilaria cf. tenera; Fragilaria radians; Fragilaria sp.; Fragilaria ulna var. ulna; GCUWI; Gomphonema acuminatum var. acuminatum; Gomphonema cf. innocens; Gomphonema cf. minutum; Gomphonema cf. truncatum; Gomphonema parvulum var. parvulum f. parvulum; Gomphonema sp.; Gravity corer, UWITEC; Gyrosigma acuminatum; Humidophila schmassmannii; Karayevia laterostrata; Karayevia ploenensis; Karayevia suchlandtii; Lake Khamra; Lake Khamra, SW Yakutia, Russia; Lake sediment; Mallomonas; Navicula amphiceropsis; Navicula cf. cryptocephala; Navicula cf. Cuspidata; Navicula cf. oligotraphenta; Naviculadicta cf. absoluta; Navicula radiosa; Navicula sp.; Neidium cf. affine; Neidium cf. hitchcockii; Nitzschia cf. acicularis; Nitzschia cf. adamata; Nitzschia cf. amphibia; Nitzschia cf. draveillensis; Nitzschia cf. palea; Nitzschia cf. perminuta; Nitzschia cf. recta; Nitzschia gracilis; Nitzschia sp.; Pinnularia cf. borealis; Pinnularia nodosa; Pinnularia subgibba; Placoneis cf. symmetrica; Planothidium biporomum; Planothidium cf. frequentissimum; Planothidium cf. peragalli; Polar Terrestrial Environmental Systems @ AWI; Pristine lake; Psammothidium cf. grischunum; Psammothidium subatomoides; Pseudostaurosira cf. brevistriata; Pseudostaurosira elliptica; Pseudostaurosira parasitica; Reimeria sinuata; RU-Land_2018_Yakutia; Russia; Sample ID; Sellaphora cf. bacillum; Sellaphora cf. mutatoides; Sellaphora cf. pseudopupula; Sellaphora cf. stauroneioides; Sellaphora laevissima; Sellaphora pupula; Sellaphora seminulum; Siberia; Skabitschewskia oestrupii; Stauroneis anceps; Stauroneis reichardtii; Stauroneis smithii; Staurosira construens; Staurosira venter; Staurosirella cf. martyi; Staurosirella pinnata; Stephanodiscus alpinus; Stephanodiscus hantzschii; Surirella angusta; Surirella cf. minuta; Surirella cf. terryi; Surirella cf. visurgis; Tabellaria flocculosa; Tetracyclus emarginatus; Tetracyclus glans; Yakutia This data set is an extension to the previously published data in a bundled publication (Stieg et al., 2024a) from the Russian Lake Khamra (59.99°N, 112.98°E, 340 m a.s.l.), located in eastern Siberia in SW Yakutia. The short core (EN18232-1) was retrieved in summer 2018 and subsampled in 2021 in 39 continuous 1 cm increments covering the last 220 years (ca. 2015-1790 CE). Detailed information about the age-depth model of the short core EN18232-1 can be found in the research paper (Stieg et al., 2024b). We provide diatom assemblage data for the 39 samples of the short core EN18232-1. We used aliquots of 0.10 g freeze-dried sample material. The slide preparation followed the common procedure (Battarbee et al., 2001). 5 ml of Microsphere suspension (2 x 10^6 microspheres ml-1) were added to estimate the diatom valve concentration (DVC, valves g-1). We used a ZEISS AXIO Scope.A1 light microscope with a Plan-Apochromat 100x/ 1.4 Oil Ph3 objective at 1000x magnification to identify diatom species to lowest possible taxonomic level. We counted a minimum of 350 diatom valves in each sample (mean: 391 valves). To assess the diatom valve dissolution, we determined the F index by dividing the diatom counts into dissolved and pristine categories. The F index has a total range between 0 and 1, whereby 1 equals a perfect preservation. We calculated the diatom accumulation rates (DARs, 10^9 valves m-2 a-1) by multiplying DVC with mass accumulation rates (MAR, g cm-2 a-1), available in a previous published data set (Stieg et al., 2024c), and multiplying it by 100. Additionally, we estimated scales of Mallomonas and Crysophyt cysts without further specification. More details according to the methods can be found in Stieg et al. (in process). |
| title | Diatom assemblage of the sediment short core EN18232-1, Lake Khamra, Siberia |
| topic | Accumulation rate, diatoms per year; Achnanthes pusilla; Achnanthidium linearioides; Adlafia minuscula var. minuscula; Age; AGE; Amphora inariensis; Amphora ovalis; Amphora pediculus; Asterionella formosa; Aulacoseira ambigua; Aulacoseira cf. pusilla; Aulacoseira cf. valida; Aulacoseira subarctica; AWI_Envi; AWI Arctic Land Expedition; Brachysira cf. neoexilis; Caloneis cf. fusus; Cavinula cocconeiformis; Cavinula lapidosa; Cavinula pseudoscutiformis; Chrysophyte cysts; Chukotka 2018; Cocconeis placentula; Counting, diatoms; Cyclostephanos cf. invisitatus; Cymbella aspera; Cymbella cymbiformis; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Diatom; Diatom assemblage; Diatom dissolution index; Diatoms, valves; Diatom valves, per unit sediment mass; Diploneis oculata; Diploneis parma; Discostella ocellata; Discostella stelligera; EN18232-1; Encyonema minutum; Encyonema silesiacum; Epithemia adnata; Eunotia ambivalens; Eunotia curtagrunowii; Eunotia faba; Event label; Fragilaria capucina; Fragilaria cf. mesolepta; Fragilaria cf. tenera; Fragilaria radians; Fragilaria sp.; Fragilaria ulna var. ulna; GCUWI; Gomphonema acuminatum var. acuminatum; Gomphonema cf. innocens; Gomphonema cf. minutum; Gomphonema cf. truncatum; Gomphonema parvulum var. parvulum f. parvulum; Gomphonema sp.; Gravity corer, UWITEC; Gyrosigma acuminatum; Humidophila schmassmannii; Karayevia laterostrata; Karayevia ploenensis; Karayevia suchlandtii; Lake Khamra; Lake Khamra, SW Yakutia, Russia; Lake sediment; Mallomonas; Navicula amphiceropsis; Navicula cf. cryptocephala; Navicula cf. Cuspidata; Navicula cf. oligotraphenta; Naviculadicta cf. absoluta; Navicula radiosa; Navicula sp.; Neidium cf. affine; Neidium cf. hitchcockii; Nitzschia cf. acicularis; Nitzschia cf. adamata; Nitzschia cf. amphibia; Nitzschia cf. draveillensis; Nitzschia cf. palea; Nitzschia cf. perminuta; Nitzschia cf. recta; Nitzschia gracilis; Nitzschia sp.; Pinnularia cf. borealis; Pinnularia nodosa; Pinnularia subgibba; Placoneis cf. symmetrica; Planothidium biporomum; Planothidium cf. frequentissimum; Planothidium cf. peragalli; Polar Terrestrial Environmental Systems @ AWI; Pristine lake; Psammothidium cf. grischunum; Psammothidium subatomoides; Pseudostaurosira cf. brevistriata; Pseudostaurosira elliptica; Pseudostaurosira parasitica; Reimeria sinuata; RU-Land_2018_Yakutia; Russia; Sample ID; Sellaphora cf. bacillum; Sellaphora cf. mutatoides; Sellaphora cf. pseudopupula; Sellaphora cf. stauroneioides; Sellaphora laevissima; Sellaphora pupula; Sellaphora seminulum; Siberia; Skabitschewskia oestrupii; Stauroneis anceps; Stauroneis reichardtii; Stauroneis smithii; Staurosira construens; Staurosira venter; Staurosirella cf. martyi; Staurosirella pinnata; Stephanodiscus alpinus; Stephanodiscus hantzschii; Surirella angusta; Surirella cf. minuta; Surirella cf. terryi; Surirella cf. visurgis; Tabellaria flocculosa; Tetracyclus emarginatus; Tetracyclus glans; Yakutia |
| url | https://doi.org/10.1594/PANGAEA.971296 |