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Ensc 400: Ecological Surveys And Techniques Question Paper

Ensc 400: Ecological Surveys And Techniques

Course:Bachelor Of Science In Environmental Science

Institution: Egerton University question papers

Exam Year:2018

EGERTON UNIVERSITY EXAMINATION,NJORO CAMPUS.

FIRST SEMESTER SESSION I 2017/2018 ACADEMIC YEAR.

FOURTH YEAR EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN ENVIRONMENTAL SCIENCE.

ENSC 400:ECOLOGICAL SURVEYS AND TECHNIQUES.

TIME:2HOURS.

INSTRUCTIONS.
(i) Answer All questions in Section A and any Two in Section B.
(ii) Use illustrations where necessary.

SECTION A[40MARKS].

Question One.
(1a) Distinguish between experimental and sampling survey designs.[4marks]
(1b) State the applications of land use surveys.[6marks]

Question Two.
(2) Describe the simple questions that need to be addressed in any investigation or study of the ecosystems.[10marks]

Question Three.
(3) You are in charge of 1000ha ranch in Machakos county of open grassland.
(a) State elements of stocking rate.[2marks]
(b) How will you determine the carrying capacity of the ranch?[8marks]

Question Four.
(4a) What effects do bias produce in ecological survey?[4marks]
(4b)How can personal bias be minimized during observations and interviews.[6marks]

SECTION B[30MARKS].

Question Five.
(5a) Discuss the importance of wildlife count.[6marks]
(5b) Assess the advantages and disadvantages of walk strip transect surveys to estimate wildlife population.[9marks]

Question Six.
(6a) What is sampling?[5marks]
(6b) Describe and indicate the procedures and applications of simple random and systematic sampling.[10marks]

Question Seven.
(7)Twenty points with 200plants were sampled using Point-Centre-Quarter distance method.The sum of all points to plant distance was 800m.
(a) What is the mean distance between plants?[5marks]
(b) Mean area per plant?[5marks]
(c)Density of plants per hectare?[5marks]

Ensc 400: Ecological Surveys And Techniques Question Paper

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