Elevation Gradients Flashcards
1
Q
What are the lapse rates along a tropical mountain?
A
Saturated - air cools by 3C/300m
Unsaturated - air cools by 1.5C/300m
2
Q
Where is there higher residual richness?
A
In montane areas - especially the tropics
3
Q
Is there reduced or increased dispersal in tropical montane regions?
A
Reduced
4
Q
Is speciation rate higher in the tropics or temperate regions?
A
Tropics
5
Q
What do quaternary climatic shifts lead to?
A
Periods of isolation of biota on mountain tops - may promote more speciation
6
Q
What speciation occurs in mountain valleys
A
Allopatric
7
Q
What drives the decrease in animal species richness up montane regions?
A
Temperature decrease
