Diatom data from multicores collected during the RV Investigator voyage IN2017_V01, Sabrina Coast shelf, Antarctica (2017)

The three multicores studied were extruded on board ship, every 1 cm in the top 20 cm, and then at 2 cm intervals to the bottom of the cores. In the lab at Colgate University, 20-25 mg of sediment were weighed to the tenth of a mg and placed in 20 ml glass vials.
Diatoms were observed with an Olympus BX50 microscope using the 100x/1.30 oil immersion objective and 10x eyepieces, for a total magnification of 1000x. For each slide, at least 400 diatom valves were counted along non-overlapping transects. Valves were only counted if greater than 50% complete, and diatoms were identified to the species level when possible using identifications from Cremer et al. (2003), Cefarelli et al. (2010), and Al-Handal et al. (2022). Unidentified diatoms were placed in either the unidentified centric diatom or unidentified pennate diatom category.
The data has been acquired on the following RV Investigator voyage
IN2017_V01
If this data has been used in any products, please acknowledge with the following: We acknowledge the use of the CSIRO Marine National Facility (https://ror.org/01mae9353) in undertaking this research.