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10 cards from this deck
Number of individuals of a species in a given area
Likelihood of finding a particular species in a quadrat
Proportion of quadrat area occupied by a plant species
Eliminates bias to produce reliable, significant results
To study gradual changes like succession along gradients
Capture, mark, release, recapture animals to estimate population
Sample 1 total×Sample 2 totalMarked recaptured\frac{\text{Sample 1 total} \times \text{Sample 2 total}}{\text{Marked recaptured}}Marked recapturedSample 1 total×Sample 2 total
Distribute evenly throughout population before recapture
Produces more reliable results
Tape measures at right angles + random number coordinates
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