Download presentation
Presentation is loading. Please wait.
Published byMatthew Simmons Modified over 9 years ago
2
The leopard seal as a barometer of climate warming Presentation by Tracey Rogers With support from: www.tallpoppies.net.au The tall poppy is a metaphor for excellence and symbolises Australia’s pride in its outstanding achievers – in all fields.
3
AMMRC 2007 AMMRC Director Australian Marine Mammal Research Centre (University of NSW/ ZPB) 22 programs Evolution & Ecology Research Centre UNSW
4
Western Antarctic Peninsula
5
Glacial retreat
6
Calving ice-bergs Image from Canadian Space Agency & Centre for Remote Sensing
7
Krill decline Atkinson et al. (2004) Nature 432: 100-103
8
Penguin colony declines Fraser & Hofmann (2003) Mar.Ecol.Prog.Ser. 265: 1-15
11
AMMRC Australia Dr T. Rogers Australia AMMRC Top-order predators UK Chile Ms I. Hebel Mosses & lichens Germany ClicOPEN Germany Prof D. Abele Climate Change Western Antarctic Peninsula Brazil Netherlands USA Dr I. Overeem Sediment analysis Belgium Dr C. De Broyer Data management Netherlands France UK Poland Germany Brazil Mexico South Africa Germany Chile DRAKE BIOSEAS Argentina Dr V. Andrea biodiversity & human impacts CAML Australia Prof M. Stoddart Census of Antarctic Marine Life Brazil Ukraine Italy India UK New Zealand RussiaPoland USA France Norway Canada USA Argentina Dr G. Ferreyra Plankton UK Australia Italy Prof. G. di Prisco Evolution & biodiversity in the Antarctic Germany Netherlands Spain Prof A. Eraso Spain Glacier networks Norway Korea Italy France Uruguay Impacts of climate change
12
Top of the food chain
13
Influence on habitat needs
14
Are the seals drifting with the ice?
15
Acoustic surveys
16
Detection Threshold Distance (r) Source Level (SL) Transmission Loss (TL) Background noise (NL) Predict survey area
17
Remote sensing data Acoustic survey ACC Bathymetry Ice data
18
Morphometrics
19
WAP leopard seals
20
Changes in Prey?
21
Changes in Diet
22
13 C Prey Location 15 N Prey Trophic Position
23
Changes over the Past Century
24
Today 784 species extinct 65 are only in captivity 16,119 threatened 2006 IUCN Red List Threatened Species
25
Thomas et al. 2004 Nature 427 145-148 18-35% species committed to extinction Tomorrow
26
Why do I care?
27
What inspired me
28
My plan
29
Juggling life/work balance?
31
Thank You
32
ammrc.org.au
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.