The state of biodiversity Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Why was the Red List updated in 1990?

A

It was informal, easy to challenge; subjective, varied between groups

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the categories of the Red List?

A
  1. Data defficient

2. Scale of exinction risk

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the criteria within scale of extinction risk?

A
A. Population reduction
B. Small distribution and fragmentation
C. Small population and decline
D. Very small or restricted population
E. Quantitative analysis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are the pros of the Red List?

A
  • Combination of lots of criteria to allocate categories

- Easy to use and understand

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the cons of the Red List?

A
  • Inaccurate data
  • Single species focus
  • Threshold values - where do you draw the line?
  • Would it be better to think on a habitat/population scale?
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the Red List Index?

A

For species that have been assessed multiple times

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the threatened extinction values for birds, mammals and amphibians?

A
Birds = 11%
Mammals = 25%
Amphibians = 33%
How well did you know this?
1
Not at all
2
3
4
5
Perfectly