[{"name":"katrantsiotis-2024-gamlebyviken-diatoms-1","title":"Holocene diatom data from the V\u00e4stervik-Gamlebyviken area, southeast coast of Sweden, Baltic Sea","summary":"This dataset consists of diatom species counts and total diatom concentrations from seven sediment cores taken from seven lake basins located in the V\u00e4stervik-Gamlebyviken area, along the southern Baltic Sea coast in SE Sweden. The data covers the period from around 10 000 \u200abefore present to the present.\r\n\r\nThe dataset was developed with the purpose to construct the Holocene shore displacement curve, interpret past sea level changes and investigate the interplay between relative sea-level changes and the development of human settlements and land-cover changes.\r\n\r\nThe sediment cores were collected in February 2017, February and March 2018 and in February 2021. Diatoms were extracted from sediments samples from different stratigraphical levels following a chemical protocol in the lab, mounted with Naphrax in slides and counted in the microscope.\r\n","citations":"Katrantsiotis C, Vinogradova O, Dahl M, Palm V, R\u00f6nnby J, Gaillard M-J, Andr\u00e9n T, Andr\u00e9n E (2024) Holocene shoreline displacement, land-cover change and human settlement distribution at the southeast coast of Sweden. Accepted for publication in Journal of Quaternary Science.\r\n\r\nKatrantsiotis C, Dahl M, Palm V, R\u00f6nnby J, Andr\u00e9n T, Andr\u00e9n E (2023) Holocene relative sea level changes in the V\u00e4stervik-Gamlebyviken region on the southeast coast of Sweden, southern Baltic Sea. Boreas, 52: 206-222. https:\/\/doi.org\/10.1111\/bor.12605\r\n","comments":"##### Coring equipment\r\nAll seven lakes were cored using a 1 m long Russian peat corer with a diameter of 5 cm.\r\n\r\n##### Laboratory work\r\nIn the laboratory, all the sediment cores were described for lithology and, thereafter, subsampled for proxy analyses.\r\n\r\nAround 0.2 g of freeze-dried sediment samples at every 5\u2060\u200a\u2013\u200a\u206020 cm throughout the cores were prepared for diatom analysis following standard techniques (see [Katrantsiotis et al. 2023](https:\/\/doi.org\/10.1111\/bor.12605)). The analysis mainly focused on the section of the cores which contained the transition from the Baltic Sea stage to an isolated lake stage. Diatoms were analysed under a Leica DMLS light microscope (LM) using oil immersion and 100X magnification.\r\n\r\nOver 400 valves were counted at each level and all species were classified based on their salinity preferences and their habitat form. See supplementary material in [Katrantsiotis et al. 2023](https:\/\/doi.org\/10.1111\/bor.12605) and Katrantsiotis et al. (2024) for the classification system of the species.\r\n\r\n##### Research project\r\n*SEASIDE - A multidisciplinary study of maritime environmental history*.  \r\nThe aim of this project is to disentangle the long-term role of human impact and natural driven processes (e.g. climate change and shoreline changes) to determine the mutual significance of the multiple stressors resulting in events of hypoxia in the Baltic Sea.\r\n\r\n##### Site coordinates\r\n- Lake Br\u00e4nnerig\u00f6len: 57\u00b0 44.064\u2019 N, 16\u00b0 30.188\u2019 E, 17.5 m a.s.l.\r\n- Lake Gagern: 57\u00b0 48.594\u2019 N, 16\u00b0 31.138\u2019 E, 13 m a.s.l.\r\n- Lake Kv\u00e4nnaren: 57\u00b0 44.752\u2019 N, 16\u00b0 36.506\u2019 E, 11.3 m a.s.l.\r\n- Lake Lillsj\u00f6n: 57\u00b0 55.934\u2019 N, 16\u00b0 23.342\u2019 E, 18.3 m a.s.l.\r\n- Lake Maren: 57\u00b0 47.197\u2019 N, 16\u00b0 34.152\u2019 E, 2 m a.s.l.\r\n- Lake Skarpeg\u00f6len: 57\u00b0 55.128\u2019 N, 16\u00b0 23.078\u2019 E, 31.5 m a.s.l.\r\n- Lake Svartsj\u00f6n: 57\u00b0 47.680\u2019 N, 16\u00b0 32.974\u2019 E, 22 m a.s.l.","category":"Lacustrine","subcategory":"Sediment cores","keywords":"Diatoms; Sediments; Shoreline reconstruction; Holocene; Baltic Sea","scientist":"Christos Katrantsiotis, Thomas Andr\u00e9n, Elinor Andr\u00e9n","firstname":"Christos","lastname":" Katrantsiotis","address":"Department of Historical, Philosophical and Religious Studies; Ume\u00e5 university","postalcode":"SE-901 87","city":"Ume\u00e5","province":"","country":"Sweden","parameters":"Earth science > Biological classification > Plants > Microalgae > Diatoms","location":"Continent > Europe > Northern Europe > Scandinavia","progress":"","language":"English","project":"This research has been funded by the Foundation of Baltic and East European studies (project SEASIDE, grant 3146-3.1.1-2017 to Elinor Andr\u00e9n).\r\n","publisher":"Bolin Centre Database","version":"1","constrains":"","access":""}]