Science/Strand III/Content Standard 5/High School/Benchmark 4
Benchmark Question: What are the responses of an ecosystem to events
that cause it to change?
Focus Question: What are the changes over time in
the environment that occur over time (ecological succession)?
Students will identify the
sequence of communities, from pioneer to climax, in a local ecosystem. The
teacher can provide pictures for this activity. Pairs of students will
construct and explain a two- or three-dimensional representation of each of
the stages. They should include in their explanations a name for each
stage, important facts about each stage, and an estimate of how long the
stage lasts. See Succession
Students will identify and discuss the dominant and supporting plants and
animals in each stage of succession. They will discuss the other factors
that support the plants and animals (e.g., soil profile, soil organisms,
organism density, ground cover, percent of sunlight, and height of