Sampling
Abiotic Factors
(non-living)
Biotic Factors
(living)
Predators
Light Intensity
Disease
Temperature
Food
Moisture
Pollution
How could we sample…
Abiotic factors such as light intensity and moisture?
Plants in an area? Insects on the ground?
How could we catch our own living
things to identify?
Living things on the ground?
Living things which fly?
Living things on trees?
Living things in streams?
Living things in rockpools?
Living things in ponds?
Living things which come out at night?
Think about plants and animals
Tree Beating
Kick Netting
Pond Dipping
Rock Pooling
http://www.bbc.co.uk/learningzone/clips/rockpools/49.html
http://www.bbc.co.uk/learningzone/clips/what-do-you-find-in-a-rock-pool/2310.html
Moth Trapping
Pitfall Traps
Quadrat
Sources of Error
Abiotic Factor
Light Intensity
Moisture
Measurement
Error
Light meter
Shading the
meter
Excess moisture
Moisture meter
on probe
Solution
Make sure your
shadow doesn’t
land on the
meter
Wipe probe
between
readings
Sources of Error
Organism
Sampling
technique
Quadrat
Plants
Error
Solution
Unreliable
results
Throw quadrat
randomly.
Unreliable
results
Cover trap with
rock to stop
birds eating
sample.
Pitfall Trap
Ground
dwelling insects
How can you find out what lives in an area?
http://www.bbc.co.uk/nature/order/Lepidoptera#p0
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http://www.bbc.co.uk/nature/order/Lepidoptera#p0
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http://www.bbc.co.uk/programmes/p003x6g8