Random sampling
- Created by: Remya Salimkumar
- Created on: 27-05-15 20:28
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- RANDOM SAMPLING
- PLANTS
- RANDOM QUADRATS-plants within the quadrat studied and abundance measured
- ABUNDANCE SCALE
- abundance score applied to each species
- E.G a=abundant c=common f=frequent o=occasional r=rare
- abundance score applied to each species
- PERCENTAGE COVER
- percentage cover of each plant estimated
- sometimes quadrat split into 100 squares to make easier
- percentage cover of each plant estimated
- POINT FRAME
- frame holding number of long needles used to measure % cover
- each plant touching the needle is recorded
- frame holding number of long needles used to measure % cover
- ABUNDANCE SCALE
- TRANSECTS- long rope or tape measure taken across habitat and samples taken along line
- LINE TRANSECT
- record plants touching the line at set intervals
- INTERRUPTED BELT TRANSECT
- quadrat used at set intervals along the line
- CONTINUOUS BELT TRANSECT
- quadrat used continuously along line
- LINE TRANSECT
- RANDOM QUADRATS-plants within the quadrat studied and abundance measured
- ANIMALS
- SWEEP NETTING
- sweep net through vegetation
- release caught organisms onto white sheet and count
- sweep net through vegetation
- COLLECTING FROM TREES
- white sheet held under tree and branched knocked
- small animals drop and are counted
- white sheet held under tree and branched knocked
- PITFALL TRAP
- container buried in soil just below surface
- any moving animals will fall in
- container buried in soil just below surface
- TULLGREN FUNNEL
- leaf litter placed in funnel with light above litter
- light drives animals downwards
- leaf litter placed in funnel with light above litter
- LIGHT TRAP
- Untitled
- SWEEP NETTING
- PLANTS
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