Patterns In Buodiversity & Their Explanation

Question 1

What is species heterogeneity/evenness

Answer 1

Accounts for relative abundance of species as well as species number

Question 2

Heterogeneity increases when..

Answer 2

There are more species and when they are more equally abundant

Question 3

What’s alpha diversity

Answer 3

Within area doversity

Question 4

What’s beta diversity

Answer 4

Between area diversity
(Eg. Number of species present in area A and not in area B)

Question 5

What’s gamma diversity

Answer 5

Overall diversity across all areas within a region

Question 6

Why does sample size have to be considered when measuring biodiversity

Answer 6

If sample size is small rare species are less likely to be detwcted

Question 7

What are the 6 key mechanisms that drive latitudinal diversity gradient

Answer 7

Evolutionary speed
Geographic area
Inter specific interactions
Ambient energy
Productivity
Disturbance

Question 8

What are ecological disturbances

Answer 8

Biotic - disease predation
Abiotic - fire, storm, flood