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Data Publisher for Earth & Environmental Science

Meyer, Bettina; Freier, Ulrich; Grimm, Volker; Groeneveld, Jürgen; Hunt, Brian P V; Kerwath, Sven; King, Rob; Klaas, Christine; Pakhomov, Evgeny A; Melbourne-Thomas, Jess; Murphy, Eugene J; Thorpe, Sally; Stammerjohn, Sharon; Wolf-Gladrow, Dieter A; Auerswald, Lutz; Götz, Albrecht; Halbach, Laura; Jarman, Simon; Kawaguchi, So; Krumpen, Thomas; Meiners, Klaus M; Nehrke, Gernot; Ricker, Robert; Summer, Michael; Teschke, Mathias; Trebilco, Rowan; Yilmaz, Noyan (2017): Less Antarctic sea ice may not mean fewer krill. PANGAEA, https://doi.org/10.1594/PANGAEA.864710, Supplement to: Meyer, B et al. (2017): The winter pack ice zone provides a sheltered but food-poor habitat for larval Antarctic krill. Nature Ecology & Evolution, https://doi.org/10.1038/s41559-017-0368-3

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Abstract:
A dominant Antarctic ecological paradigm suggests that winter sea ice is the feeding ground for krill larvae. However, several recent observations conflict with this hypothesis. Our study presents the first direct evidence that winter sea ice is actually a food-poor environment when compared to neighbouring open water regions. We found that complex under ice habitats are vital for larval krill, providing shelter from currents. During the day the larvae feed on the sparse ice-associated food but after sunset, they migrate into the water below the ice. This behaviour allows access to more food and promotes the dispersal of larvae to spring feeding grounds. Current larval krill overwintering and nursery habitats in the SW Atlantic are predicted to become ice-free in the future. This will lead to an enhanced food supply and faster larval development and growth but might increase the dispersal of larvae out of the SW Atlantic ecosystem.
Coverage:
Median Latitude: -59.377499 * Median Longitude: -32.678355 * South-bound Latitude: -61.333000 * West-bound Longitude: -42.393670 * North-bound Latitude: -53.500000 * East-bound Longitude: -19.217000
Date/Time Start: 2013-08-26T04:04:00 * Date/Time End: 2013-10-06T14:05:00
Size:
9 datasets

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Datasets listed in this publication series

  1. Meyer, B; Freier, U; Grimm, V et al. (2017): Abundance of Euphausia superba larvae measured at ice station PS81/566 during POLARSTERN cruise ANT-XXIX/7. https://doi.org/10.1594/PANGAEA.864708
  2. Meyer, B; Freier, U; Grimm, V et al. (2017): Abundance of Euphausia superba larvae measured on multinet samples during POLARSTERN cruise ANT-XXIX/7. https://doi.org/10.1594/PANGAEA.864709
  3. Meyer, B; Freier, U; Grimm, V et al. (2017): Chorophyll a and particulate organic carbon measured on water bottle samples during POLARSTERN cruise ANT-XXIX/7. https://doi.org/10.1594/PANGAEA.864704
  4. Meyer, B; Freier, U; Grimm, V et al. (2017): Chorophyll a in sea ice during POLARSTERN cruise ANT-XXIX/7. https://doi.org/10.1594/PANGAEA.865352
  5. Meyer, B; Freier, U; Grimm, V et al. (2017): Dive observations during POLARSTERN cruise ANT-XXIX/7. https://doi.org/10.1594/PANGAEA.864707
  6. Meyer, B; Freier, U; Grimm, V et al. (2017): Diving photo-quadrants during POLARSTERN cruise ANT-XXIX/7. https://doi.org/10.1594/PANGAEA.865351
  7. Meyer, B; Freier, U; Grimm, V et al. (2017): Growth increment and growth rate during POLARSTERN cruise ANT-XXIX/7. https://doi.org/10.1594/PANGAEA.864705
  8. Meyer, B; Freier, U; Grimm, V et al. (2017): Relative digestive gland length to carapax length of Euphausia superba larvae during POLARSTERN cruise ANT-XXIX/7. https://doi.org/10.1594/PANGAEA.864706
  9. Ricker, R (2016): Sea ice conditions during POLARSTERN cruise ANT-XXIX/7. https://doi.org/10.1594/PANGAEA.831976