http://bolin.su.se/data/andren-2020-diatoms-1
Elinor Andrén, Thomas Andrén
Siliceous microfossil data (diatoms) from the western Gotland Basin, Baltic Sea, covering the last 1200 years
Bolin Centre Database
2020
Datafile
Marine
Ecosystems
Diatom stratigraphy
Siliceous microfossil
Pseudosolenia calcar-avis
Eutrophication
Phytoplankton seasonality
Surface water salinity
Baltic Sea
Western Gotland Basin
Earth science > Biological classification > Protists > Diatoms
Elinor Andrén
2020-07-03T16:16:24+00:00
English
1
The dataset contains diatom species data (counts) and siliceous microfossil absolute abundance (concentration) data from 60 stratigraphical levels covering 2017 – 756 CE (~1200 years) from a 233 cm long splice sediment record (core MSM62-1-60). Sediment depth (cm below sea floor) and ages (years CE) are provided.
The data are provided in one xlsx spreadsheet file having two data tabs. The same data are also provided as two comma-separated values (csv) text files. Character set: Unicode (UTF-8).
###### Position of corers
- long gravity corer: 57° 58.64’ N, 17° 57.37’ E, water depth 218.6 m
- short multicorer: 57° 58.73’ N, 17° 57.56’ E, water depth 203 m
Elinor Andrén developed the microfossil data. Thomas Andrén developed the age model.
For information on age modelling see article by Andrén et al. (2020).
The sediment samples were prepared for siliceous microfossil analyses according to the method described in Battarbee (1986) and Battarbee and Kneen (1982). All concentrations are given in number per gram dry weight (No./gdw). The floras used for diatom identification and classification into salinity requirements and life form (pelagic versus benthic) are Cleve-Euler (1951 – 1955), Hasle and Syvertsen (1997), Krammer and Lange-Bertalot (1986 – 1991), Snoeijs et al. (1993 – 1998) and Witkowski et al. (2000), and taxonomic names are updated according to [AlgaeBase](https://www.algaebase.org/). All references and details of methods can be found in Andrén et al. (2020).