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YOU NEED A CALCULATOR!!!!! Start-Up: What is the biological level smaller than a community? How is it defined?

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Page 1: Population Density

YOU NEED A CALCULATOR!!!!!Start-Up: What is the biological level smaller than a community? How is it defined?

Page 2: Population Density

Characteristics of Populations

Population – group of individuals of a single species that live in the

same general area – rely on the same resources & face similar

challenges

Population size = total number of individuals

Population density= number per unit area

Page 3: Population Density

Sampling Techniques to Estimate Population Density & Size

1. Quadrats

2. Indirect Counting

Page 4: Population Density

3. Mark-recapture method

Total population = (# in first capture)(# in second capture) # of marked animals recaptured


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