Lecture 14 - Gavin

Question 1

What is a Latitudinal Diversity Gradient?

Answer 1

A suggestion that species are more diverse towards the equator and of central latitudes.

Question 2

What can PET record?

Answer 2

Potential evapotranspiration can suggest available energy in a system.

Question 3

What do warmer systems provide for ectotherms.

Answer 3

It enhances their energy intake and food resources.

Question 4

What do warmer systems provide for endotherms.

Answer 4

It reduces the resources needed to maintain body temperature and more energy becomes available for growth and reproduction.

Question 5

What is habitat heterogeneity?

Answer 5

Diversity among a habitat

Question 6

Where is speciation rates higher in, tropics or outside?

Answer 6

Speciation is higher within the tropics.

Question 7

Where are extinction rates higher, tropics or outside?

Answer 7

Extinction is higher outside the tropics.

Question 8

What was Bergman’s rule?

Answer 8

He proposed body size is advantageous at high latitudes. As the large size led to reduce heat loss due to a lower SA:V.

Question 9

What did Olson’s paper show?

Answer 9

Olson’s paper showed that generally larger species are at colder latitudes, but also at low species richness body size is high too.