Measuring number and distribution of species

Question 1

Quadrants

Answer 1

The population of immobile or slow moving organisms can be estimated using random samples of quadrats

Question 2

Sampling

Answer 2

Taking a small section of the total area allows the population to be estimated

Question 3

Transects

Answer 3

A transect is a line across a habitat, usually using a tape measure.
Used when a change or gradient, in abiotic conditions across the habitat.
Used when looking for changes in abundance or distribution of a species across the environment

Question 4

Line transect

Answer 4

Records the species that make contact with the tape measure at regular intervals along the transect

Question 5

Belt transect

Answer 5

It uses quadrats.
Quadrats are placed at regular intervals along the quadrat.
An abundance of different species in the quadrat can be measured by percentage cover and frequency.