Biodiversity 11.1 Flashcards
1
Q
What is biodiversity
A
- the variety of living organisms present in an area.
2
Q
why is biodiversity important
A
- maintains balanced ecosystem for all organisms within it
- each organism relys on all others
3
Q
which areas have the most and least biodiversity
A
- Tropical, moist regions have the most biodiversity
- Very cold areas such as the artic or very dry areas such as deserts have the least biodiversity
4
Q
what are the levels of biodiversity
A
- habitat biodiversity
- species biodiversity
- genetic biodiversity
5
Q
what can measuring biodiversity tell us
A
- effect of changes to an environment
^ such as human activity, disease or climate change
6
Q
what is an EIA
what is its function
A
- Environmental impact assessment (EIA) assesses the positive and negative effects of a project on biodiversity
- Before a major project is undertaken,
^such as building a new road or creation of nature reserve
7
Q
What is habitat biodiversity
A
- number of different habitats found within an area.
8
Q
what are the 2 types of species diversity
A
- Species richness
- Species evenness
9
Q
What is genetic biodiversity
A
the variety of genes that make up a species
^number of different alleles
10
Q
why is genetic biodiversity important
A
- allows for better adaptation to a changing environments
11
Q
what is species richness
A
the number of different species living in a particular area
12
Q
what is species eveness
A
A comparison of the number of individuals of each species living in a community.
13
Q
what is meant by community
A
The community is all the populations of living organisms in a particular habitat
