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

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

    • 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 Duration / N Descendants
    • 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 5 ED
    • 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 ?
    • 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