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Published June 30, 2021 | Version 1.5
Dataset Open

Stable isotope ratios of C, N and S in Southern Ocean sea stars (1985-2017)

  • 1. Laboratory of Oceanology, Freshwater and Oceanic Sciences Unit of reSearch (FOCUS), University of Liège, 4000 Liège, Belgium
  • 2. Marine Biology Lab, Université Libre de Bruxelles (ULB), 1050 Brussels, Belgium
  • 3. Institute of Oceanology, Polish Academy of Sciences (IOPAN), 81-712 Sopot, Poland
  • 4. Institut de Systématique, Evolution, Biodiversité (ISYEB), Muséum national d'Histoire naturelle (MNHN), CNRS, Sorbonne Université, EPHE, 75005 Paris, France
  • 5. Marine Biology, Vrije Universiteit Brussel (VUB), 1050 Brussels, Belgium
  • 6. Biogéosciences, UMR CNRS 6282, Université Bourgogne Franche-Comté, 21000 Dijon, France
  • 7. OD Nature, Royal Belgian Institute of Natural Sciences, 1000 Brussels, Belgium

Description

Sea stars (Echinodermata: Asteroidea) are a key component of Southern Ocean benthos, with 16% of the known sea star species living there. In temperate marine environments, sea stars commonly play an important role in food webs, acting as keystone species. However, trophic ecology and functional role of Southern Ocean sea stars are still poorly known, notably due to the scarcity of large-scale studies. Here, we report 24336 trophic markers (stable isotopes and elemental contents of C, N and S of tegument and/or tube feet) and biometric (arm length, disk radius, arm to disk ratio) measurements in 2456 specimens of sea stars. Samples were collected between 12/01/1985 and 08/10/2017 in numerous locations along the Antarctic littoral and Subantarctic islands. The spatial scope of the dataset covers a significant portion of the Southern Ocean (Latitude: 47.717° South to 86.273° South ; longitude: 127.767° West to 162.201° East ; depth: 6 to 5338 m). The dataset contains 133 distinct taxa, including at least 72 accepted species spanning 51 genera, 20 families and multiple feeding guilds / functional groups (suspension feeders, sediment feeders, omnivores, predators of mobile or sessile prey). For over 600 specimens, mitochondrial CO1 genes were sequenced to confirm and/or refine taxonomic identifications, and those sequences are already publicly available through the Barcode of Life Data System. This number will grow in the future, as molecular analyses are still in progress. Overall, thanks to its large taxonomic, spatial, and temporal extent, as well as its integrative nature (combining genetic, morphological and ecological data), this dataset can be of wide interest to Southern Ocean ecologists, invertebrate zoologists, benthic ecologists, and environmental managers dealing with associated areas.

Files

SouthernOcean_SeaStars_TrophicBiometric_1985-2017.csv

Files (1.2 MB)

Additional details

References

  • Le Bourg B (2020). Trophic ecology of Southern Ocean sea stars: Influence of environmental drivers on trophic diversity. PhD Thesis, University of Liège, Laboratory of Oceanology. 261 pp. Available from ULiège's institutional repository at http://hdl.handle.net/2268/248221