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3 marksEcosystem Dynamics and Community Stability

CAPE Environmental Science Unit 1 · 2010 · Paper 2 · Question 1(b)(i)

Figure 1 illustrates the population of alligators in the Black River across a twelve-year period.

Describe the trend in variation of the alligator population shown in Figure 1. Use specific values in your answer.

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Other parts of this question

  1. 1(a)Distinguish between 'primary ecological succession' and 'secondary ecological succession'.[3 marks]
  2. 1(b)(ii)Using the information presented in Figure 1, determine the carrying capacity of the Black River.[1 mark]
  3. 1(b)(iii)In which year was the carrying capacity of the Black River MOST likely achieved?[1 mark]
  4. 1(c)Suggest FOUR reasons to support the statement made by the teacher.[12 marks]

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