Apple Disney ESPN Yahoo UHD I UL Take Test Readiness Jan.. Ecology Lab 1- Googie

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Apple Disney ESPN Yahoo UHD I UL Take Test Readiness Jan.. Ecology Lab 1- Googie S... lab 2 QUESTION 3 ¥ Question Completion Status: The variance to mean ratio can suggest the distribution patern of a populstion. What would you expect the ratio to be in a highly aggregated population? Assume that the quadrat size is appropriate for the organism size The variance/mean ratio would be greater than 1. The variancelmean ratio would be less than 1 h is impossible to speculate. The vananemean ratio would approximate 1 . QUESTION 4 In Figure 7 4 the lab manusl demonstrates the importance of choosing the correct quadrat size ih part this might depend on the ecological question Ave you curious whether the populations are clumped or how the clumps hemselves are distributed in the landscape? Take a look at the two quadrat sines on p. 162. It you already krew orgarisms were clumped and wanted to know how the clumps were distributed across the landscape, which quadrat would you une QUESTIONS Figure 7 6 is a photo of horseshoe bats in clushers to convense body heat What value of dispersion do you hypothesine a population of such bats noukd Less than 1 Exactly 1 Greater than 1 Cliek Save to save and submt. CTick Save all ansvers 3 6 Q W E R option command

Explanation / Answer

Q3: The variance/mean ratio would be greater than 1.

Statisticians have demonstrated that the variance/mean ratio has a value close to 1 in a

randomly dispersed population as in samples from a random distribution the variance is

equal to the mean. Any ratio greater than 1 indicates aggregation, and a ratio less

than 1 indicates a trend toward uniformity.

Q4. A

as the population is clumped, it needs to be distributed in large quadrants (A).

Q 5. Less than 1

as there are lesser horse shoe bats in the cluster.

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