Fieldwork (Required Practical)

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Created on: 23-03-21 17:49

What equipment is used to measure the population size of a species within an area?

Quadrats

1 of 7

State the method used to measure the
population size of a species within an area.

PART ONE

1. Measure the area of the whole environment you are investigating.
2. Measure the area of a quadrat.
3. Use a random co-ordinate generator to assign where to put the quadrat.
4. Place the quadrat in this spot.

2 of 7

State the method used to measure the
population size of a species within an area.

PART TWO

5. Count all the organisms within the quadrat and record.
6. Repeat this 10 times.
7. Estimate the population size in the whole area by finding the mean of a species in 1 quadrat then x by the area of the wider area.

3 of 7

Why do the quadrats have to be random?

- avoid bias
- valid results

4 of 7

What equipment is used to measure the distribution of a species within an area?

Transect line

5 of 7

State the method used using a transect line

1. Using a tape measure mark out a line where you want to study
2. Decide number intervals to place a quadrat (every 2m)
3. Put the quadrat here
4. Count how many organisms are in the quadrat

6 of 7

State the method used using a transect line

5. Repeat this until you have reached the end of your transect

7 of 7

Other cards in this set

Card 2

Front

State the method used to measure the
population size of a species within an area.

PART ONE

Back

Card 3

Front

State the method used to measure the
population size of a species within an area.

PART TWO

Back

Card 4

Front

Why do the quadrats have to be random?

Back

Card 5

Front

What equipment is used to measure the distribution of a species within an area?

Back

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Fieldwork (Required Practical)