Biol 405:Applied Ecology Question Paper
Biol 405:Applied Ecology
Course:Applied Biology
Institution: Kenya Methodist University question papers
Exam Year:2013
KENYA METHODIST UNIVERSITY
END OF 3RDTRIMESTER 2013 (DAY) EXAMINATION
FACULTY : SCIENCE AND TECHNOLOGY
DEPARTMENT : PURE AND APPLIED
UNIT CODE : BIOL 405
UNIT TITLE : APPLIED ECOLOGY
TIME : 2 HOURS
INSTRUCTIONS
Section A: Answer all questions
Section B: Answer question 4 and any other question
SECTION A – 30 MARKS
Question One
Describe four basic parameters used in defining populations and communities
(4 marks)
Explain what you understand by the following terms as used in ecological studies
(3 marks)
Wildlife management
Protected areas
Agoecology
State any three disadvantages of using importance value as an overall estimate of the importance of plant species in a community
(3 marks)
Question Two
Describe two main groups of producers common among ecosystems
(4 Marks)
Define coverage and calculate the coverage of a tree which diameter is 1.90 meters
(3 marks)
Stating reasons give two types of population dispersion in which point quarter method should not be used
(3 Marks)
Question Three
Write short notes on the following
Assisted natural regeneration
(3 marks)
Open access land resources
(3 marks)
Describe four effects of loss of soil fertility due to soil erosion
(4 marks)
SECTION B
Question Four
Using the set of data shown in the table below; number in plot (x) and observed frequency f(x), probability p(x) and the expected frequency F(x) from Poisson distribution with a mean (µ) of 1.2 individuals per plot
Number m
Plot x Observed
Frequency f(x) Probability
P(x) Expected
Frequency F(x)
0 27 0.27 30.1
1 39 0.39 36.1
2 22 0.22 21.7
3 11 0.11 8.7
4 1 0.01 2.6
>4 0 0.00 0.8
µ=1.2, density D=1.2, n=100 critical values of chi-square and theoretical density (D’) tables are provided
Determine whether the population distribution is random or not using
Chi-square goodness of fit test
(5 marks)
Ration of observed and expected density
(5 marks)
Question Five
Explain the major ways employed in national parks management (20 marks)
Question Six
Discuss four problems associated with uncontrolled utilization of natural resources
(8 marks)
Explain under what circumstances is transect sampling is transect sampling is considered superior to either plot sampling or point-quarter sampling methods?
(6 Marks)
Explain the main underlying causes of land degradation
(6 marks
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