EE38

Question 1

What is the non equilbrium explanation for species richness

Answer 1

groups with more species either:

• faster speciation rates
• slower extinction rate
• older - more time to accumulate species

Question 2

What does a fast life history lead to in mammals?

Answer 2

faster evolution
rapid speciation
lower extinction rates
predicts faster net diversification rates in clades of r selected species
eg. mice/elephant

Question 3

what is a fast life history?

Answer 3

short gestation
large litter
short life span

Question 4

What is the equilibrium explanation for species richness?

Answer 4

limited by opportunity
groups with more species either
- have access to more resources
- partion resources more finely - narrower niches
- live in large geographical regions

Question 5

what are examples of adaptive radiation?

Answer 5

darwins finches

hawain honey creeper birds

Question 6

what are hawaiin flora and fauna an example of?

Answer 6

ancetors arriving by change into an environment empty of competitors and diversified to fill an unusual range of niches

Question 7

r=b-d what is this equation?

Answer 7

r = net diversification rate
b = species rate
d= extinction rate
part of non equilibirum explanation