25) Unit 2 - Sampling of Wild Organisms

Question 1

what considerations should be made when carrying out sampling/ How should sampling be carried out

Answer 1

• carried out in a way that minimises impact on wild species and habitats.
• consideration should be given to rare and vulnerable habitats that are protected by legislation

Question 2

List the methods of sampling and which types of organisms they would be used to sample

Answer 2

• Transect Studies using quadrats for sessile and slow moving species
• Point count for birds
• Capture techniques for mobile species
• camera traps for elusive species
• scat sampling for elusive species

Question 3

describe how a transect study is carried out

Answer 3

• A long line is placed where different samples can be taken

* quadrats are placed along transect allowing abundance to be recorded

Question 4

what type of conditions is the transect line usually placed on

Answer 4

terrain or abiotic factors are changeable

Question 5

describe what point count is

Answer 5

recording the number of birds seen and heard from a stationary point

Question 6

describe what scat sampling is, and what sort of info is gained from this type of sampling

Answer 6

• indirect method where animals droppings are analysed

* provides info about abundance and diet

Question 7

Name the types of sampling

Answer 7

• Random
• Stratified
• Systematic

Question 8

Describe random sampling

Answer 8

individuals selected randomly from a larger population

Question 9

describe stratified sampling

Answer 9

one larger population divided into smaller sub populations.

Then individuals are randomly selected from each sub population

Question 10

described systematic sampling

Answer 10

taken at regular intervals e.g. every 2 meters along transect