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1 markEcosystem Dynamics and Community Stability

CAPE Environmental Science Unit 1 · 2010 · Paper 2 · Question 2(a)(ii)

Results of population sampling of mangrove species across three ecosystems (A, B, and C) are provided in Table 1.

Rank the three ecosystems in DECREASING order of species diversity.

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Other parts of this question

  1. 2(a)(i)Calculate the species diversity for Ecosystem B using the equation D = N(N - 1) / Σ n(n - 1).[5 marks]
  2. 2(a)(iii)Which of three ecosystems is the MOST stable?[1 mark]
  3. 2(a)(iv)Suggest FOUR reasons to support your answer to (iii) above.[4 marks]
  4. 2(b)Suggest THREE inferences that can be made about the competition taking place among the amphibians in the grassland ecosystem.[9 marks]

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