10.1594/PANGAEA.983896Helmens, KarinKarinHelmensEngels, StefanStefanEngels0000-0002-2078-0361Katrantsiotis, ChristosChristosKatrantsiotisKuosmanen, NiinaNiinaKuosmanenLuoto, Tomi PTomi PLuoto0000-0001-6925-3688Salonen, J SakariJ SakariSalonen0000-0002-8847-9081Väliranta, MinnaMinnaVälirantaPANGAEA2025ChironomidsdiatomsFinlandLOIMacro-remainsMIS 5anon-pollen palynomorphsOdderadePollenSokliDEPTH, sediment/rockAchnanthes bioretiiAchnanthes cleveiAchnanthes conspicuaAchnanthes distinctaAchnanthes exiguaAchnanthes flexellaAchnanthes helveticaAchnanthes holstiiAchnanthes lanceolataAchnanthes joursacenseAchnanthes minutissimaAchnanthes oestrupiiAnomoeoneis brachysiraAnomoeoneis sphaerophoraAmphora fogedianaAmphora libycaAmphora ovalisAmphora pediculusCaloneis bacillumCaloneis siliculaCocconeis placentulaCymatopleura ellipticaCymatopleura soleaCymbella affinisCymbella asperaCymbella cistulaCymbella cuspidataCymbella cymbiformisCymbella ehrenbergiiCymbella mesianaCymbella naviculiformisCymbella proximaCymbella silesiacaCymbella sinuataCymbella subaequalisCymbella subcuspidataCymbella spp.Denticula kuetzingiiDenticula tenuisDiploneis ellipticaDiploneis finnicaEpithemia adnataEpithemia argusEpithemia sorexEpithemia turgidaEunotia spp.Fragilaria capucinaFragilaria constrictaFragilaria nitzschioidesFragilaria parasiticaFragilaria pseudoconstruensFragilaria ulnaFrustulia rhomboidesGomphonema acuminatumGomphonema affineGomphonema angustatumGomphonema angustumGomphonema augurGomphonema clavatumGomphonema gracileGomphonema olivaceumGomphonema truncatumGomphonema spp.Gyrosigma acuminatumMelosira lineataMelosira moniliformisMelosira nummuloidesNavicula bacillumNavicula capitataNavicula cariNavicula cruciculaNavicula cryptocephalaNavicula decussisNavicula elginensisNavicula exiguaNavicula exigua var. signataNavicula gastrumNavicula jentzschiiNavicula laevissimaNavicula laterostrataNavicula libonensisNavicula menisculusNavicula muticaNavicula oblongaNavicula placentulaNavicula protractaNavicula pupulaNavicula radiosaNavicula recensNavicula reinhardtiiNavicula rhynchocephalaNavicula scutelloidesNavicula seibigianaNavicula similisNavicula slesvicensisNavicula striolataNavicula tusculaNavicula viridulaNeidium ampliatumNeidium dubiumNeidium productumNitzschia amphibiaNitzschia angustataNitzschia frustulumPinnularia gibbaPinnularia interruptaPinnularia maiorPinnularia microstauronPinnularia nodosaPinnularia viridisPinnularia spp.Pseudostaurosira robustaRhoicosphenia abbreviataRhopalodia gibbaStauroneis ancepsStauroneis phoenicenteronStauroneis smithiiStaurosira brevistriataStaurosira construensStaurosira construens var. binodisStaurosira construens var. construensStaurosira construens var. subsalinaStaurosira construens var. venterStaurosirella lapponicaStaurosira neoproductaStaurosirella pinnataStaurosirella leptostauronStaurosirella martyiTetracyclus ellipticusTetracyclus emarginatusTetracyclus glansTetracyclus rupestrisAulacoseira distansAulacoseira lirataAulacoseira validaCyclotella meneghinianaTabellaria fenestrataTabellaria flocculosaAulacoseira alpigenaAulacoseira ambiguaAulacoseira crenulataAulacoseira islandicaAulacoseira granulataAulacoseira granulata var. angustissimaAulacoseira italicaAulacoseira lacustrisAulacoseira muzzanensisAulacoseira subarcticaCyclostephanos dubiusCyclotella radiosaCyclotella stelligeraStephanodiscus alpinusStephanodiscus hantzschiiStephanodiscus mediusStephanodiscus minutulusStephanodiscus neoastraeaDiatoma mesodonDiatoma vulgarisMeridion circulareHantzschia amphioxysOrthoseira roeseanaPinnularia borealisPinnularia streptorapheAchnanthes spp.Amphora spp.Aulacoseira spp.Coscinodiscus spp.Cyclotella spp.Navicula spp.UnknownDiatoms, tertiaryDiatoms, benthicDiatoms, tychoplankticDiatoms, plankticDiatoms, rheophilicDiatoms, aerophilicDiatoms indeterminataDiatomsHydraulic piston corerDiatom analysis (Battarbee, 1986, in Berglund, Handbook of Holocene Pal.)2010-02-15T08:00:00/2010-02-15T17:00:00Dataset10.1111/bor.1249510.1007/0-306-47668-1_810.1016/j.quascirev.2009.03.0013938 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalThis dataset provides counts of diatom valves for the MIS-5a sediment sequence retrieved from Sokli (Finland) in 2010. Counts per taxon are presented against depth (m); total sums for classes of diatoms (e.g. Sum Benthic Taxa) are presented as well. The diatom dataset provides information on MIS 5a lake ecosystem dynamics (Helmens et al., 2021). A total of 22 samples were selected for diatom analysis. Diatoms were extracted from the sediment following the protocol presented by Battarbee et al. (2003). First, organic matter was oxidized in H2O2 in a water bath (at c. 100 °C). Subsequently, carbonates were removed by 10% HCl treatment (no visible reaction). Clay particles were decanted from 100 ml beakers after sedimentation overnight. Sand grains were removed after five seconds of sedimentation. The residue was mounted in Naphrax® and analysed under a light microscope with X1000 magnification using immersion oil. Flora used for species identification and information on ecological preferences are presented in Helmens et al. (2009). A minimum of 500 diatom valves were identified from each of the samples (average count = 1322, range = 531-2264 valves). All analyses were performed in the laboratories Stockholm University, Sweden.Further funding was provided by SKB (Swedish Nuclear Fuel and Waste Management Company) and the Bolin Centre for Climate Research.29.3002777867.80027778Finland