Elevation Gradients

Question 1

What are the lapse rates along a tropical mountain?

Answer 1

Saturated - air cools by 3C/300m

Unsaturated - air cools by 1.5C/300m

Question 2

Where is there higher residual richness?

Answer 2

In montane areas - especially the tropics

Question 3

Is there reduced or increased dispersal in tropical montane regions?

Answer 3

Reduced

Question 4

Is speciation rate higher in the tropics or temperate regions?

Answer 4

Tropics

Question 5

What do quaternary climatic shifts lead to?

Answer 5

Periods of isolation of biota on mountain tops - may promote more speciation

Question 6

What speciation occurs in mountain valleys

Answer 6

Allopatric

Question 7

What drives the decrease in animal species richness up montane regions?

Answer 7

Temperature decrease