Essential Biology G4(HL) Conservation of Biodiversity
Student Name: www.jutrzopx.wikispaces.com
1.
Biotic indices: estimating the health of an ecosystem. a.
Define indicator species
Due Date: b.
Annotate the components of this calculation of a biotic index.
Tolerance rating of a species
10=
1=
Biotic Index:
A measure of the state of the environment c.
Calculate the biotic indices of these two sample sites:
Site A species n i
A
B
12
23
C
D
E
F
N=
21
8
6
13 a i
10
9
8
7
6
5
Σ(n i x a i
)= n i
x a i
Site B
species n i
D
E
5
8
F
G
H
I
N=
12
23
29
19 a
7
6
5
5
3
1 i
Σ(n a i i x
)= n i
x a i
Site A: BI= d.
Conclude on the biotic indices calculated in part d.
Site B: BI =
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Essential Biology G4(HL) Conservation of Biodiversity
Student Name:
2.
Human impacts: Extinction a.
Define extinction.
Due Date: b.
Outline how a species becomes extinct in terms of evolution. c.
What are some of the anthropogenic causes of species extinction? d.
Outline the factors that contributed to the extinction of one named animal species, due to human impacts.
Common name:
Linnean name:
Niche:
Human impacts:
Innate weakneses:
3.
Nature reserves and conservation. a.
Describe the function of a nature reserve, giving an example from your country.
Use this database to find them: http://www.nationalparks-worldwide.info/
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Essential Biology G4(HL) Conservation of Biodiversity Due Date:
Student Name: b.
Outline the following biogeographical features of nature reserves that promote the conservation of diversity. Use diagrams if needed.
Edge Effects
Size
Habitat corridors c.
Outline the dangers of habitat fragmentation.
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Essential Biology G4(HL) Conservation of Biodiversity Due Date:
Student Name:
4.
Management of nature reserves a.
Describe active management with regard to nature reserves. b.
Discuss some examples of active management strategies and their impacts. c.
Outline the following aspects of a successful active management strategy.
Before beginning:
Human interests:
Staffing:
Legal:
Monitoring:
Funding:
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Essential Biology G4(HL) Conservation of Biodiversity Due Date:
Student Name:
5.
In-situ and ex-situ Conservation a.
Distinguish between in-situ and ex-situ conservation measures. b.
Discuss the benefits of both in-situ and ex-situ conservation of plant and animal species, with examples.
in-situ (terrestrial and aquatic reserves) ex-situ
Advantages
Animal Examples
Plant examples
Captive breeding:
Rehabilitation:
Seed banks:
Botanic gardens:
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