Biodiversity and Sampling
- Created by: HarveyMac
- Created on: 27-03-15 21:23
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- Biodiversity
- Sampling
- Plants
- Quadrat
- Use abundance scale to measure abundance of a species
- Use point frame - any plant touching s point counts as a %. If 100 points then 1 plant = 1%
- Estimate % cover although usually underestimated
- Transect
- Continuous belt transect
- Quadrat moves along the line
- Interrupted belt transect
- Record plants touching line at set intervals
- Continuous belt transect
- Quadrat
- Animals
- Knock on branches of a tree to remove insects etc
- A pitfall trap - container buried in the ground
- A light trap
- A Tullgren funnel
- Sweep net - pull net through low lying vegetation - empty contents onto white sheet
- Studying animals is hard because they move around
- Must make sure a sensible number of samples are taken
- Importance = to know how human behaviours are effecting biodiversity
- Must be random - 1) take samples at regular intervals across habitat 2) use random numbers to plot coordinates
- Plants
- Currently estimated to be 1.8million species in the world
- Species: a group of organisms that interbreed to form viable offspring
- Habitat: the place where an organism or population lives. It includes the climate, topographic and edaphic factors as well as the plants and animals that live there
- Biodiversity: the number and variety of living things to be found in the world, in an ecosystem or in a habitat
- Sampling
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