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CSB810S - CONSERVATION BIOLOGY - 1ST OPP- JUNE 2022 |
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,r
nAmlBIA unlVERSITY
OF SCIEnCE Ano TECHnOLOGY
Faculty of Health, Applied Sciencesand Natural Resources
Department of Agriculture and Natural Resources Sciences
QUALIFICATION: Bachelor of Natural Resource Management Honours
QUALIFICATIONCODE: 08BNRH
LEVEL: 8
COURSE: Conservation Biology
COURSECODE: CSB810S
DATE:June 2022
SESSION:June
DURATION: 3 (three) hours
MARKS: 100
FIRSTOPPORTUNITYEXAMINATION QUESTION PAPER
EXAMINER{S) Dr T. Nzuma
MODERATOR: Prof. H. Ndagurwa
INSTRUCTIONS
THIS QUESTION PAPERCONSISTSOF 3 PAGES
(Excluding this front page)
1. Answer ALL the questions.
2. Write clearly and neatly.
3. Number the answers clearly.
PERMISSIBLEMATERIALS
1. Examination paper.
2. Examination script.
3. Calculator.
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Question 1
[20]
Define the following ecological terms, using examples.
1.1 Alpha diversity
[2]
1.2 Bequest value
[2]
1.3 Biodiversity hotspot
[2]
1.4 Connectedness
[2]
1.5 Demographic stochasticity
[2]
1.6 Habitat fragmentation
[2]
1.7 Edge effect
[2]
1.8 Environmental stochasticity
[2]
1.9 Genetic stochasticity
[2]
1.10 Umbrella species
[2]
Question 2
[20)
Should Management of Biodiversity be Species-Based or Ecosystem-Based? Discuss [20]
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Question 3
[20]
Think of a dam on a river in any part of Namibia. What effects would the removal of this dam
have on the: (1) local economy; (2) flow regime of the river; and (3) movement of fish and other
aquatic organisms? Considering these factors, would it be a good idea to remove this dam?
[20]
Question 4
[40]
Diversity indices provide important information about the rarity and commonness of species in a
community. The ability to quantify diversity in this way is an important tool for biologists trying to
understand community structure. Using the data below sampled from the Namib karoo biome;
Species
Site A
Zophosis orbicu!aris
3
Cheroides spp.
2
Gonocephalum spp.
0
Branchinotog/uma sandersi
0
Himatismus spp.
0
Lepidonotopodium piscesae
0
Stips stali
3
Para/vine/la pandorae
1
Physadesmia g/obosa
1
Amphisamytha ga/apagensis
0
Gonocephalum spp.
0
Depressigyra globulus
0
Onymacris /aeviceps
0
Physadesmia spp.
0
Note: All answers should be to 3 decimal places.
Site B
1
0
0
0
0
0
0
1
1
0
0
0
0
3
a. Calculate species richness for the five sites/habitats.
Site C
16
1
77
0
6
0
13
2
11
0
15
9
22
3
Site D
6
1
39
4
0
2
34
4
0
14
2
0
9
21
Site E
0
16
0
1
0
3
0
0
7
0
5
0
0
45
[5]
b. Calculate species diversity using Simpson's diversity index for the 5 habitats. Show all your
working and interpret your findings giving one possible ecological reason for the
differences in diversity.
[35]
THE END
Total Marks: 100
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