Sampling
Abiotic Factors (non-living) Biotic Factors (living) Disease Predators Food Light Intensity Temperature Pollution Moisture
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
Moth Trapping
Pitfall Traps
Quadrat
Abiotic FactorMeasurementErrorSolution Light IntensityLight meter Shading the meter Make sure your shadow doesn’t land on the meter MoistureMoisture meter Excess moisture on probe Wipe probe between readings Sources of Error
Organism Sampling technique ErrorSolution Plants Quadrat Unreliable results Throw quadrat randomly. Ground dwelling insects Pitfall Trap Unreliable results Cover trap with rock to stop birds eating sample.
How can you find out what lives in an area? 081gf1 04hfqp