Under-ice fauna biomass, carbon demand, and secondary production under Arctic pack ice north of Svalbard during the Polarstern expedition PS92 in spring 2015

• Main Author: Ehrlich, Julia
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Apherusa glacialis; biomass as carbon; carbon demand; production as carbon; Appendicularia; Arctic Ocean; ARK-XXIX/1; TRANSSIZ; Biomass; Calanus finmarchicus; Calanus glacialis; Calanus hyperboreus; Calculated; Campaign; Cast number; Chaetognatha; Cirripedia; larvae; Arctic; Svalbard
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.931610; https://doi.org/10.1594/PANGAEA.931610

We investigated the biomass, carbon demand, and secondary production of under-ice fauna (here metazoans >300 μm) at eight stations in the Arctic Ocean, north of Svalbard. Sampling was conducted during spring in 2015 with the Surface and Under Ice Trawl (SUIT). The biomass (µgCm-²) for under-ice fauna taxa was calculated by multiplying abundances (ind. m-²) of each taxon obtained from Ehrlich et al. (2020) by the carbon content per individual of this taxon. The mass-specific ingestion rate of each taxon was multiplied by the total biomass of that taxon at every station to determine the carbon demand per day (µgC/m²/day). The secondary production of under-ice fauna was calculated by using a P/B ratio from Forest et al. (2014) for large Arctic mesozooplankton species.