121807
Estimating Population
Samples Methods
- Scaling up Smaller Samples
- Quadrat
- Divides an Area
- Grid
- Divides an Area
- Multiply number counted
by area of habitat
- Quadrat
- Capture-Recapture
- Capture and Mark Organisms
- Capture the same number
- Count number of Marked Organisms
- Population Size =
(No in 1st x No in
2nd) / No in 2nd Marked
- Capture and Mark Organisms
- Other Notes
- Sample Size
affects Accuracy
- Using Capture-Recapture Data
- Assume no death or
changes in Pop Size
- Assume Sampling
Methods exactly the same
- Assume Marking hasn't affected
the Organisms survival chances
- Assume no death or
changes in Pop Size
- Population - All organisms
of one species in a habitat
- Community - Population of more
than one species in a habitat
- Sample Size
affects Accuracy
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