Counts of diatom valves for the Eemian sediment sequence retrieved from Sokli (Finland) in 2010
Data Publisher for Earth & Environmental Science
This dataset provides counts of diatom valves for the Eemian sediment sequence retrieved from Sokli (Finland) in 2010. Counts per taxon are presented against both depth (m) and age (ka BP); total sums for classes of diatoms (e.g. total benthic diatoms) and overall counts are presented as well. The diatom dataset provides information on Eemian lake ecosystem dynamics. A total of 104 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 Plikk et al. (2016; 2021). A minimum of 400 diatoms were identified from each sample with the exception of the bottommost samples where diatom abundance was very low. All analyses were performed in the laboratories Stockholm University, Sweden.
Major cooling intersecting peak Eemian Interglacial warmth in northern Europe
Seasonal variability in temperature trends and atmospheric circulation systems during the Eemian (Last Interglacial) based on n-alkanes hydrogen isotopes from Northern Finland
New insights from XRF core scanning data into boreal lake ontogeny during the Eemian (Marine Isotope Stage 5e) at Sokli, northeast Finland
The Eemian Interglacial at Sokli, northern Finland
Chironomid-based temperature reconstruction for the Eemian Interglacial (MIS 5e) at Sokli, northeast Finland
Abrupt high-latitude climate events and decoupled seasonal trends during the Eemian
Smol, JP, Birks, HJB, Last, WM, Bradley, RS, Alverson, K (eds.), Tracking Environmental Change Using Lake Sediments, Developments in Paleoenvironmental Research, 3, Kluwer Academic Publishers, Dordrecht
Development of an Eemian (MIS 5e) Interglacial palaeolake at Sokli (N Finland) inferred using multiple proxies
Palaeogeography, Palaeoclimatology, Palaeoecology
Diatom assemblages from an Eemian palaeolake in Northern Europe with morphological observations of rare Aulacoseira sp. resting spores
Achnanthes lanceolata ssp. frequentissima
Pinnularia microstauron var. brebissonii
Stauroneis phoenicenteron var. phoenicenteron
Staurosirella leptostauron var. leptostauron
Chironomids; C/N; Diatom; Eemian; Finland; Itrax; loss on ignition; macrobotanical remains; MIS 5e; n-alkanes; non-pollen palynomorphs; Pollen; Sokli; stabe isotopes
Further funding was provided by Swedish Nuclear Fuel and Waste Management Company (SKB) and Bolin Centre for Climate Research (Stockholm University).