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Life hung by a thread: endurance of Antarctic fauna in glacial periods

By S. Thatje, C.D. Hillenbrand, A. Mackensen and R. Larter


Today, Antarctica exhibits some of the harshest environmental conditions for life on Earth. During the last glacial period, Antarctic terrestrial and marine life was challenged by even more extreme environmental conditions. During the present interglacial period, polar life in the Southern Ocean is sustained mainly by large-scale primary production. We argue that during the last glacial period, faunal populations in the Antarctic were limited to very few areas of local marine productivity (polynyas), because complete, multiannual sea-ice and ice shelf coverage shut down most of the Southern Ocean productivity within today’s seasonal sea-ice zone. Both marine sediments containing significant numbers of planktonic and benthic foraminifera and fossil bird stomach oil deposits in the adjacent Antarctic hinterland provide indirect evidence for the existence of polynyas during the last glacial period. We advocate that the existence of productive oases in the form of polynyas during glacial periods was essential for the survival of marine and most higher-trophic terrestrial fauna. Reduced to such refuges, much of today’s life in the high Antarctic realm might have hung by a thread during the last glacial period, because limited resources available to the food web restricted the abundance and productivity of both Antarctic terrestrial and marine life.<br/

Topics: QH301
Year: 2008
OAI identifier: oai:eprints.soton.ac.uk:50811
Provided by: e-Prints Soton

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  4. (2003). A demographic comparison of two southern elephant seal populations.
  5. (2007). A diverse benthic assemblage 100 km from open water under the Amery Ice Shelf,
  6. (2005). A Pliocene-Pleistocene stack of 57 globally distributed benthic d 18O records. Paleoceanography 20:PA1003.
  7. (2000). An extreme inland breeding locality of snow petrels (Pagodroma nivea)i n the southern Prince Charles Mountains, Antarctica. Polar Biology 23:717–720.
  8. and sea-ice primary production during Austral spring in the Bellingshausen Sea.
  9. (2004). Annual changes in sea-ice, chlorophyll a, and primary production in the Ross Sea, Antarctica. Deep-Sea Research Part II: Topical Studies in Oceanography 51:117–138.
  10. (1977). Antarctic soft-bottom benthos in oligotrophic and eutrophic environments.
  11. (1994). Benthic foraminiferal assemblages and the d 13C-signal in the Atlantic sector of the Southern Ocean: glacial-tointerglacial contrast. In
  12. (1998). Benthic suspension feeders: their paramount role in littoral marine food webs.
  13. (1962). Biological and oceanographic observations under an Antarctic ice shelf.
  14. (1998). Biological soup within decaying summer sea ice in the Amundsen Sea,
  15. (2001). Bunger Hills, East Antarctica: ice free at the last Glacial Maximum.
  16. (2005). Challenging the cold: crabs reconquer the Antarctic. Ecology 86:619–625.
  17. (2005). Climate change and seal survival: evidence for environmentally mediated changes in elephant seal, Mirounga leonina, pup survival.
  18. (2002). Climate variations and the physiological basis of temperature dependent biogeography: systemic to molecular hierarchy of thermal tolerance in animals. Comparative Biochemistry and Physiology 132A:739–761.
  19. (2003). Colonization, succession, and extinction of marine floras during a glacial cycle: a case study from the Windmill Islands (east Antarctica) using biomarkers. Paleoceanography 18:1067.
  20. (1996). Decoupling of d 13CRCO2 and phosphate in recent Weddell Sea deep and bottom water: implications for glacial Southern Ocean paleoceanography.
  21. (2000). Effect of sea-ice extent on adult survival of an Antarctic top predator: the snow petrel Pagodroma nivea. Oecologia 125:483–488.
  22. (1977). Emperor penguin—strategy to live and breed in the cold.
  23. (2003). ESR dating of fossil shells in the Lu ¨ tzowHolm Bay region, East Antarctica. Quaternary Science Reviews 22:1323–1328.
  24. (1981). Evidence for a late Wisconsin glaciation of the Weddell Sea.
  25. (2002). Evolutionary and ecological aspects of some Antarctic and sub-Antarctic penguin distributions. Oecologia 130:485–495.
  26. (2001). Explaining the Weddell Polynya—a large ocean eddy shed at Maud Rise.
  27. (1979). Fish, crustaceans, and the sea floor under the Ross Ice Shelf. Science 203:449–451.
  28. (2005). Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at King George Island. Polar Biology 28:769–775.
  29. Geological Society of America Bulletin 111:1486–1516. S m i t h ,R .C . ,H .M .D i e r s s e n ,a n dV
  30. (2000). Glazialmarine Sedimentationsentwicklung am westantarktischen Kontinentalrand im Amundsen-
  31. (2001). Global climate change and the origin of modern benthic communities in Antarctica.
  32. (2006). Holocene variation in the Antarctic coastal food web: linking delta D and delta C-13 in snow petrel diet and marine sediments.
  33. (2004). Late Pleistocene and Holocene history of Lake Terrasovoje, Amery Oasis, East Antarctica, and its climatic and environmental implications.
  34. (2001). Late Pleistocene deep-water circulation in the subantarctic eastern Atlantic. Global and Planetary Change 30:197–229.
  35. (1999). Late Pleistocene–Holocene retreat of the West Antarctic Ice-Sheet system in the Ross Sea: Part 1. Geophysical results.
  36. (2002). Late Quaternary climate change in the Ross Sea, Antarctica. Antarctica at a close of a millennium.
  37. (1992). Late Quaternary climatic cycles as recorded in sediments from the Antarctic continental margin.
  38. (1998). Late Quaternary fluctuations of biogenic component fluxes on the continental slope of the Ross Sea, Antarctica.
  39. (2005). Late Quaternary ice level changes in central Dronning Maud Land, East Antarctica, as inferred from 14C ages of Mumiyo deposits in snow petrel colonies.
  40. (1998). Late Quaternary sediment facies in Prydz Bay, East Antarctica, and their relationship to glacial advance onto the continental shelf.
  41. (1983). Life in cold waters: the physiological ecology of polar marine ectotherms. Oceanography and Marine Biology: An Annual Review 21:341–453.
  42. Long-term contrasted responses to climate of two Antarctic seabird species.
  43. (2004). Low phytoplankton biomass and ice algal blooms in the Weddell Sea during the ice-filled summer of
  44. (1998). Microbial community structure in the marginal ice zone of the Bellingshausen Sea.
  45. (2004). Middle Miocene Southern Ocean cooling and Antarctic cryosphere expansion.
  46. (2005). Modelling population dynamics of seabirds: importance of the effects of climate fluctuations on breeding proportions.
  47. (2002). No evidence for a Pleistocene collapse of the West Antarctic Ice Sheet from continental margin sediments recovered in the Amundsen Sea. Geo-Marine Letters 22:51–59.
  48. (1988). Occupation of the Antarctic Continent by petrels during the past 35000 years: inferences from a 14C study of stomach oil deposits. Polar Biology 9:69–77.
  49. (2005). On the origin of Antarctic marine benthic community structure.
  50. (1999). Past and future grounding-line retreat of the West Antarctic Ice Sheet.
  51. (1992). Phytoplankton distributions and production in the Bellingshausen Sea, Austral spring
  52. (2003). Phytoplankton dynamics within 37 Antarctic coastal polynya systems.
  53. (2006). Polar stratification: a critical view from the Southern Ocean.
  54. (2001). Polynyas. Pages 2241–2247
  55. (1998). Primary productivity of near surface communities within Antarctic pack ice.
  56. (2004). Quaternary glaciation of the sub-Antarctic Islands. Pages 339–345
  57. (1997). Radiocarbon dates of snow petrel (Pagodroma nivea) nest sites in central Dronning Maud Land, Antarctica. Polar Record 33:29–38.
  58. (1995). Radiocarbon-dated subfossil stomach oil deposits from petrel nesting sites: novel paleoenvironmental records from continental Antarctica. In
  59. (1987). Recurring polynyas over the Cosmonaut Sea and the Maud Rise.
  60. (2005). Relative sea level curves for the South Shetland Islands and Marguerite Bay, Antarctic Peninsula. Quaternary Science Reviews 24:1203–1216.
  61. (2002). Sea-level changes at the LGM from icedynamic reconstructions of the Greenland and Antarctic ice sheets during the glacial cycles. Quaternary Science Review 22:203–231.
  62. (2005). Sea-surface temperature and sea ice distribution of the Southern Ocean at the EPILOG Last Glacial Maximum—a circum-Antarctic view based on siliceous microfossil records. Quaternary Science Review 24:869–896.
  63. (2003). Seafloor morphology and acoustic facies of the George V Land shelf. Deep-Sea Research II
  64. (1988). Seasonality in the Antarctic marine environment.
  65. (2000). Southern elephant seal movements and Antarctic sea ice.
  66. (2006). Southern elephant seals north of the Antarctic Polar Front. Antarctic Science 18:213–221.
  67. (1989). Stable isotope stratigraphy from the Antarctic continental margin during the last one million years.
  68. (1996). Summer plankton beneath the McMurdo Ice Shelf at White Island, McMurdo Sound, Antarctica. Polar Biology 16:87–94.
  69. (1993). Temperature and extinction in the sea: a physiologist’s view. Paleobiology 19:499–518.
  70. (1991). Temporal variability in Antarctic marine ecosystems—periodic fluctuations in the phocid seals.
  71. (2002). The Ade ´ lie Penguin: bellwether of climate change.
  72. (2004). The Antarctic ice sheet and the triggering of deglaciations.
  73. (2002). The Antarctic ice sheet during the last glacial maximum and its subsequent retreat history: a review. Quaternary Science Review 22:44–70.
  74. (1998). The distribution and formative processes of latent-heat polynyas in East Antarctica.
  75. (1997). The foraging ecology of female Emperor Penguins in winter.
  76. Trematomus scotti in Beaver Lake: the first record of a fish from a non-marine Antarctic habitat.
  77. (2001). Trends, rhythms, and aberrations in global climate 65 Ma to present.
  78. (2002). Variability of Antarctic sea ice
  79. (2005). Variation of snow petrel breeding success in relation to sea-ice extent: detecting local response to largescale processes? Polar Biology 28:687–699.

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