An Ecologist Samples the Abundance of Various Species Along an Environmental

question 70

Multiple Choice

An ecologist samples the abundance of various species along an environmental gradient and fails to find clusters of species.Instead,peaks of abundance of dominant species are merely randomly spaced segments along a continuum.This distribution of species supports the

• A)unified concept of a community.
• B)organismic concept of a community.
• C)individualistic or continuum concept of a community.
• D)successional concept of a community.

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Definitions:

Sum of Squared Deviations

The total of the squared differences between each observation and the mean of a dataset.

Standard Deviation

An indicator used to assess the degree to which data points diverge or scatter around the average value.

Range

The difference between the highest and lowest values in a dataset, showing the spread of the data.

Mean

An average value that summarizes or represents the central tendency within a data set, determined by dividing the sum of all values by their count.