How Does an Ecologist Determine the Presence of an Ecotone

question 61

Multiple Choice

How does an ecologist determine the presence of an ecotone?

• A) Measure the abundance of plant species over space and abrupt changes in species composition.
• B) Perform controlled crosses among all plant species within a community to determine the extent to which the species are reproductively isolated.
• C) Measure microclimate and soil variables for abrupt changes.
• D) Measure elevation, since many environmental and ecological variables change with elevation.

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