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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 & TECHNOLOGY
DEPARTMENT : PURE AND APPLIED SCIENCES
UNIT CODE : BIOL 405
UNIT TITLE : APPLIED ECOLOGY
TIME : 2 HOURS

INSTRUCTIONS

Section A: answer all the questions

Section B: answer question four and any other question

SECTION A: 30 MARKS

Question One

Explain what you understand by the following terms as used in ecological studies

(6 Marks)

Population intensity
Relative frequency
Restoration ecology
Rangeland
Inappropriate land management practices
Wildlife management

Describe under what circumstances is transect sampling considered superior to either plot sampling or point quarter sampling methods?

(4 marks)

Question Two

With examples, describe the kind of population dispersion one would expect if:

The occurrence of some individuals is enhanced by others

(2 Marks)

The occurrence of an individual hinders that of another nearby

(2 Marks)

State two major kinds of methods that are used in describing spatial distribution and to measure departure from randomness

(2 marks)

State four effects of loss of soil fertility die to soil erosion

(4 marks)

Question Three

Describe any three problems associated with uncontrolled utilization of natural resource.

(3 marks)

Describe Assisted Natural Regeneration (ANR)

(3 marks)

Differentiate between Tenancy and open access resources as type of Land Tenure and describe how each leads to land degradation

(4 Marks)

SECTION B : 40 MARKS)

Answer question 4 and any other question

Question Four

Lake Victoria and Lake Naivasha are among the important freshwater aquatic ecosystems in the East Africa region and are presently under intensive threat

Explain the nature and causes of the problems facing these freshwater aquatic ecosystems

(10 marks)

Explain the possible management and conservation measures being put in place to help alleviate the problems?

(5 Marks)

A population has a mean of 1.2 and a variance of 0.90

Calculate the variance – mean ration and indicate the kind of distribution likely to be exhibited by this population

(3 Marks)

Describe the weakness of using variance – mean ratio as a measure of aggregation and propose a possible solution to the weakness

(12 Marks)

Question Five

What are invasive alien species?

(12 marks)

With examples discuss the causes and impacts of invasive alien species

(10 marks)

Explain how the problem of invasive alien species can be tackled

(8 Marks)

Question Six

Explain any three characteristics of a degraded forest land

(6 Marks)

Describe any three underlying causes of land degradation

(6 marks)

With examples, explain ways in which wild species are important to mankind

(8 marks)

Biol 405:Applied Ecology Question Paper

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