Ecological sampling of living organisms
I can describe and choose suitable methods to sample populations of plants or animals.
- Year 8
Ecological sampling of living organisms
I can describe and choose suitable methods to sample populations of plants or animals.
Lesson details
Key learning points
- Sampling is used to obtain estimates of populations within an area because it would be impossible to count them all.
- There are lots of different sampling methods that can be used to sample plants and animals.
- Sampling is essential for conservation to monitor populations and compare them.
Keywords
Quadrat - A quadrat is a square frame which is used to sample populations of plants or slow-moving animals.
Pooter - A pooter is a piece of equipment used to suck up and sample small animals.
Mark-release-recapture - Mark-release-recapture is a way that is used to estimate the number of individuals in a population.
Pitfall trap - A pitfall trap is used to sample small ground living animals.
Sampling - Sampling is a survey of plants and/or animals which provides information about the populations of organisms.
Common misconception
Pupils often associate the use of quadrats to survey plants in one type of habitat. Pupils do not consider how they can be used to sample sedentary animals, e.g. barnacles or limpets on a rocky shore.
During the slidedeck there is reference to how quadrats can be used to sample plants and sedentary animals in different habitats.
Equipment
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Match the word to its meaning.
Q2.What word means the mass of living material in one or more organisms?
Q3.In a food chain there are a number of trophic levels. Which tropic level does a food chain diagram always start with?
Q4.Look at the pyramid of biomass. Which organism is a producer?
Q5.Which statement about pyramids of biomass is true?
Q6.An adaptation is a feature that organisms have to help them live in a particular place. Match each adaptation with how it helps the organism to survive.
Assessment exit quiz
6 Questions
Q1.Which of the following is true when explaining why scientists sample populations?
Q2.What piece of apparatus is used to suck up and sample small animals?
Q3.What is the name of this sampling method?
Q4.Which two of the following organisms might be sampled using this sampling technique?
