大象传媒

Field investigations - OCR Gateway Sampling

Ecologists study the distribution of living organisms in habitats to find out how healthy it is. They use many different sampling methods to provide quantitative data which is then analysed.

Part of Biology (Single Science)Global challenges

Sampling

It is important to estimate the number of organisms in a population to better understand the relationships in a . This information is useful for monitoring the impact of conservation projects that aim to conserve or . It is almost always impossible to count all of the organisms in a population. Scientists look at a small section of a population to draw conclusions about the rest of the population. This process is called and the area or part of population looked at is called a sample.