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RGE811S-RANGELAND ECOLOGY-1ST OPP- JUNE 2024 |
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nAmlBIA UnlVERSITY
OF SCIEnCE AnD TECHnOLOGY
FACULTYOF HEALTH,NATURALRESOURCESAND APPLIEDSCIENCES
DEPARTMENTOF NATURALRESOURCESSCIENCES
QUALIFICATION:BACHELOROF NATURALRESOURCESMANAGEMENT HONOURS
QUALIFICATIONCODE: 08BNRH
LEVEL:8
COURSECODE: RGE811S
COURSENAME: RANGELAND ECOLOGY
DATE:JUNE 2024
DURATION: 3 HOURS
MARKS: 100
FIRSTOPPORTUNITYEXAMINATION QUESTION PAPER
EXAMINER(S) Prof Ben Strohbach
MODERATOR: Dr Absalom Kahumba
INSTRUCTIONS
1. Answer ALL the questions.
2. Write clearly and neatly.
3. Number the answers clearly.
PERMISSIBLEMATERIALS
1. Examination question paper
2. Answering book
3. Calculator
THIS QUESTION PAPERCONSISTSOF 2 PAGES{Excluding this front page}
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Question 1:
[20]
Define the following terms in Rangeland Science context.
1.1. Ecosystem
(3)
1.2. Biome
(3)
(2)
1.3. Veld/Vegetation type
(2)
1.4. Carrying capacity
(2)
1.5. Grazing capacity
(3)
1.6. Stocking rate
(3)
1.7. Livestock farmer
(2)
Question 2:
[30]
Discuss the main similarities and differences between the eastern Hardap,
eastern Omaheke, eastern Otjozondjupa and Kavango East Regions, i.t.o. their
biophysical environment and the associated opportunities and challenges for
rangeland management.
Question 3:
[35]
Discuss the growth and development of a grass plant in detail with focus on
growth point development, growth reserves, root growth and the growing
cycle. What implications have these growth characteristics on rangeland
management practises?
3.1. Growth point development
(5)
3.2. Growth reserves
(10)
3.3. Root growth
3.4. Growth cycle
(5)
(15)
Question 4:
[15]
A farmer decided to determine the grazing capacity in a camp on his/her farm.
The farmer clipped 40 (1m2 ) quad rates with a yield of 25 kg of grass after it
was dried in an oven.
4.1. Convert the clipped grass biomass to kg/ha
(3)
4.2. Calculate grazing capacity in kg Animal Biomass/ ha/ year, using a 50%
(4)
utilization factor
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4.3. The camp is 80 ha and the farmer is planning to stock the camp with 1500 (5)
ewes with an average mass of 55kg for 240 days. How will you advice this
farmer and should he/she go ahead with the plan?
4.4. What will be the correct stocking rate of the 80 ha camp for a planned
(3)
period of 240 days?
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