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?
Graeme T. Lloyd@GraemeTLloyd
EDGE species
Evol
ution
ary
Disti
nctiv
enes
s
Extinction RiskIsaac et al. 2007
EDGE species
Evol
ution
ary
Disti
nctiv
enes
s
Extinction Risk
EDGE
Isaac et al. 2007
Evolutionary Distinctiveness
Isaac et al. 2007
012345Time (Ma)
Evolutionary Distinctiveness
Isaac et al. 2007
012345Time (Ma)
3
5
1
1
1
1
1
1Branch Duration
Evolutionary Distinctiveness
Isaac et al. 2007
012345Time (Ma)
4
1
2
2
1
1
1
1N Descendants
Evolutionary Distinctiveness
Isaac et al. 2007
012345Time (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
012345Time (Ma)
0.75
5
0.5
0.5
1
1
1
1ED
Evolutionary Distinctiveness
Isaac et al. 2007
012345Time (Ma)
0.75 +
5 =
0.5 +
0.5 +
1 =
1 =
1 =
1 =2.25
2.25
2.25
2.25
5
ED
Evolutionary Distinctiveness
012345Time (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 EDDe
crea
se in
ED
Incr
ease
in E
D
ED with fossils
ED with fossils
Gavialis gangeticus
Tomistoma schlegelii