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The leopard seal as a barometer of climate warming Presentation by Tracey Rogers

The leopard seal as a barometer of climate warming Presentation by Tracey Rogers. The tall poppy is a metaphor for excellence and symbolises Australia’s pride in its outstanding achievers – in all fields. With support from:. www.tallpoppies.net.au. AMMRC. Director

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The leopard seal as a barometer of climate warming Presentation by Tracey Rogers

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  1. The leopard seal as a barometer of climate warmingPresentation by Tracey Rogers The tall poppy is a metaphor for excellence and symbolises Australia’s pride in its outstanding achievers – in all fields. With support from: www.tallpoppies.net.au

  2. AMMRC • Director • Australian Marine Mammal Research Centre (University of NSW/ ZPB) • 22 programs • Evolution & Ecology Research Centre UNSW

  3. Western Antarctic Peninsula

  4. Glacial retreat

  5. Calving ice-bergs Image from Canadian Space Agency & Centre for Remote Sensing

  6. Krill decline Atkinson et al. (2004) Nature 432: 100-103

  7. Penguin colony declines Fraser & Hofmann (2003) Mar.Ecol.Prog.Ser. 265: 1-15

  8. Germany Chile Italy UK USA Uruguay Norway Ms I. Hebel Prof. G. di Prisco Dr I. Overeem Spain Mosses & lichens Evolution & biodiversity in the Antarctic Spain Prof A. Eraso Sediment analysis Glacier networks Australia Netherlands Netherlands Brazil Korea France Germany Brazil South Africa Argentina Mexico Italy UK Dr V. Andrea Germany Prof D. Abele Australia AMMRC Top-order predators Australia DRAKE BIOSEAS ClicOPEN Dr T. Rogers AMMRC biodiversity & human impacts Germany Climate Change Western Antarctic Peninsula Chile Brazil Ukraine Poland Belgium Australia Argentina Dr C. De Broyer Prof M. Stoddart Poland Russia Data management Dr G. Ferreyra CAML UK USA Plankton Census of Antarctic Marine Life France Germany France New Zealand Norway Canada USA Netherlands UK Italy India Impacts of climate change

  9. Top of the food chain

  10. Influence on habitat needs

  11. Are the seals drifting with the ice?

  12. Acoustic surveys

  13. Predict survey area Source Level (SL) Background noise (NL) Transmission Loss (TL) Detection Threshold Distance (r)

  14. Remote sensing data • Acoustic survey • ACC • Bathymetry • Ice data

  15. Morphometrics

  16. WAP leopard seals

  17. Changes in Prey?

  18. Changes in Diet

  19. d13C Prey Location d15N Prey Trophic Position

  20. Changes over the Past Century

  21. Today 784 species extinct 65 are only in captivity 16,119 threatened 2006 IUCN Red List Threatened Species

  22. Tomorrow Thomas et al. 2004 Nature 427 145-148 18-35% species committed to extinction

  23. Why do I care?

  24. What inspired me

  25. My plan

  26. Juggling life/work balance?

  27. Juggling life/work balance?

  28. Thank You

  29. ammrc.org.au

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