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9 marksEcology, Niches, and Interactions

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

Table 2 shows the results of an ecological study observing three amphibians in a grassland ecosystem.

Suggest THREE inferences that can be made about the competition taking place among the amphibians in the grassland ecosystem.

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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)(ii)Rank the three ecosystems in DECREASING order of species diversity.[1 mark]
  3. 2(a)(iii)Which of three ecosystems is the MOST stable?[1 mark]
  4. 2(a)(iv)Suggest FOUR reasons to support your answer to (iii) above.[4 marks]

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