B7 - Sampling and RP

Question 1

Abundance

Answer 1

The number of individuals per species

Question 2

Distribution

Answer 2

Where the species are located in an area

Question 3

Sampling

Answer 3

Recording the abundance in a particular area, and then multiplying them by the whole area

Question 4

Impracticalities of sampling

Answer 4

• Animals may move in/out of the area whilst counting; can lead to miscounting and inacurate results
• Some animals may die during counting time
• May be dificult to find all the animals during counting

Question 5

Equipment used in sampling

Answer 5

• Quadrat - used when sampling plants, is the sample area
• Pond net - used to capture mamals e.g fish, flying insects
• Pooter - used to safely collect small invertebraes
• Pitfall trap - used to trap animals by tricking them

Question 6

Sampling RP

Answer 6

1. Pick 20 numbers at random between 1 and 10, and group them into 10 pairs of coordinates.
2. Highlight the squares that correspond with your coordinates and count the number of e.g. daisies in each of those squares and record it.
3. Find the total number of e.g. daisies, for the segment sample.
4. Find the average in one square. Add all of the grid segment e.g. daisies together and divide by 10 to get the average.
5. Multiply the average number of e.g. daises by 100/the total numer of grid segments.
6. Count all the e.g. daises in the sample area and compare numbers.