How does Evolutionary
Distinctiveness change when we
place fossils in the tree?
Graeme T. Lloyd
@GraemeTLloyd
EDGE species
Evolutionary
Distinctiveness
Extinction Risk
Isaac et al. 2007
EDGE species
Evolutionary
Distinctiveness
Extinction Risk
EDGE
Isaac et al. 2007
Evolutionary Distinctiveness
Isaac et al. 2007
012345
Time (Ma)
Evolutionary Distinctiveness
Isaac et al. 2007
012345
Time (Ma)
3
5
1
1
1
1
1
1Branch Duration
Evolutionary Distinctiveness
Isaac et al. 2007
012345
Time (Ma)
4
1
2
2
1
1
1
1N Descendants
Evolutionary Distinctiveness
Isaac et al. 2007
012345
Time (Ma)
3 / 4
5 / 1
1 / 2
1 / 2
1 / 1
1 / 1
1 / 1
1 / 1Branch Dura...
Evolutionary Distinctiveness
Isaac et al. 2007
012345
Time (Ma)
0.75
5
0.5
0.5
1
1
1
1ED
Evolutionary Distinctiveness
Isaac et al. 2007
012345
Time (Ma)
0.75 +
5 =
0.5 +
0.5 +
1 =
1 =
1 =
1 =
2.25
2.25
2.25
2.25...
Evolutionary Distinctiveness
012345
Time (Ma)
0.75 +
5 =
0.5 +
0.5 +
1 =
1 =
1 =
1 =
2.25
2.25
2.25
2.25
5
ED
Isaac et al....
Case study
Tree without fossils
Oaks 2011
ED without fossils
ED without fossils
Alligator sinensis
Tree with fossils
Change in EDDecreaseinED
IncreaseinED
ED with fossils
ED with fossils
Gavialis gangeticus
Tomistoma schlegelii
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How does Evolutionary Distinctiveness change when we place fossils in the tree?

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How does Evolutionary Distinctiveness change when we place fossils in the tree?

  1. 1. How does Evolutionary Distinctiveness change when we place fossils in the tree? Graeme T. Lloyd @GraemeTLloyd
  2. 2. EDGE species Evolutionary Distinctiveness Extinction Risk Isaac et al. 2007
  3. 3. EDGE species Evolutionary Distinctiveness Extinction Risk EDGE Isaac et al. 2007
  4. 4. Evolutionary Distinctiveness Isaac et al. 2007 012345 Time (Ma)
  5. 5. Evolutionary Distinctiveness Isaac et al. 2007 012345 Time (Ma) 3 5 1 1 1 1 1 1Branch Duration
  6. 6. Evolutionary Distinctiveness Isaac et al. 2007 012345 Time (Ma) 4 1 2 2 1 1 1 1N Descendants
  7. 7. Evolutionary Distinctiveness Isaac et al. 2007 012345 Time (Ma) 3 / 4 5 / 1 1 / 2 1 / 2 1 / 1 1 / 1 1 / 1 1 / 1Branch Duration / N Descendants
  8. 8. Evolutionary Distinctiveness Isaac et al. 2007 012345 Time (Ma) 0.75 5 0.5 0.5 1 1 1 1ED
  9. 9. Evolutionary Distinctiveness Isaac et al. 2007 012345 Time (Ma) 0.75 + 5 = 0.5 + 0.5 + 1 = 1 = 1 = 1 = 2.25 2.25 2.25 2.25 5 ED
  10. 10. Evolutionary Distinctiveness 012345 Time (Ma) 0.75 + 5 = 0.5 + 0.5 + 1 = 1 = 1 = 1 = 2.25 2.25 2.25 2.25 5 ED Isaac et al. 2007 ?
  11. 11. Case study
  12. 12. Tree without fossils Oaks 2011
  13. 13. ED without fossils
  14. 14. ED without fossils Alligator sinensis
  15. 15. Tree with fossils
  16. 16. Change in EDDecreaseinED IncreaseinED
  17. 17. ED with fossils
  18. 18. ED with fossils Gavialis gangeticus Tomistoma schlegelii

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