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Biovolume and biomass estimates of key diatoms in the Southern Ocean
journal contributionposted on 2023-05-16, 20:56 authored by Cornet-Barthaux, V, Armand, LK, Queguiner, B
Linear measurements of 31 Southern Ocean diatom species or genus groupings are presented and used in the derivation of species-specific biovolume, biomass and surface to volume ratios. Species measurements are in tune with summarised values in the literature and range from 2.6 to 2296 Î¼m in length and 8.5 to 140 Î¼m in diameter. Average cell volume ranged from 63 to 1.43 Ã— 205 Î¼m3 and biomass from 10 to 3686 pg C cell -1, the values being smallest in pennate shaped species and greatest in cylindrical centrics. The 31 species can be divided into 7 small, 12 intermediate and 12 large biomass contributors based on their cell volume and/or their surface to volume ratio. Carbon biomass estimates from biovolume equations are discussed and suggest that future work including large Southern Ocean species is warranted. Species-specific biomass values reported here should serve as a baseline for future analyses of major diatom carbon contributors in the generally high nutrient, low chlorophyll Southern Ocean. Â© Inter-Research 2007.
Publication titleAquatic Microbial Ecology
Department/SchoolInstitute for Marine and Antarctic Studies
Place of publicationGermany