EE38 Flashcards
1
Q
What is the non equilbrium explanation for species richness
A
groups with more species either:
- faster speciation rates
- slower extinction rate
- older - more time to accumulate species
2
Q
What does a fast life history lead to in mammals?
A
faster evolution rapid speciation lower extinction rates predicts faster net diversification rates in clades of r selected species eg. mice/elephant
3
Q
what is a fast life history?
A
short gestation
large litter
short life span
4
Q
What is the equilibrium explanation for species richness?
A
limited by opportunity groups with more species either - have access to more resources - partion resources more finely - narrower niches - live in large geographical regions
5
Q
what are examples of adaptive radiation?
A
darwins finches
hawain honey creeper birds
6
Q
what are hawaiin flora and fauna an example of?
A
ancetors arriving by change into an environment empty of competitors and diversified to fill an unusual range of niches
7
Q
r=b-d what is this equation?
A
r = net diversification rate
b = species rate
d= extinction rate
part of non equilibirum explanation
