3.7 Mass Extinction and Biodiversity Flashcards
1
Q
Define ‘Biodiversity’
A
Biodiversity is the total variation that exists amongst all living things
2
Q
What are the three measurable components of biodiversity?
A
- Genetic Diversity
- Species Diversity
- Ecosystem Diversity
3
Q
Define ‘Genetic Diversity’
A
Genetic diversity comprises the genetic variation shown by the NUMBER AND FREQUENCY OF ALLELES IN A POPULATION
4
Q
Define ‘Species Diversity’
A
Species diversity comprises the species richness and the relative abundance of the ecosystem
5
Q
What is ‘species richness’?
A
The number of species present in an ecosystem
6
Q
What is ‘relative abundance’?
A
The proportion of each species in an ecosystem, e.g. the number of individual lions and zebra.
7
Q
Define ‘Ecosystem Diversity’
A
The number of distinct ecosystems in an area
