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1. Define and give examples of populations that exhibit the…

1. Define and give examples of populations that exhibit the following dispersion patterns:

  1. clumped
  2. random
  3. uniform

2. Students sampled aquatic insect larvae living on a small section of river bottom measuring 2.0 m by 0.8m. They found approximately 45 000 black fly larvae in their sample.

  1. what was the population density of this species?
  2. Estimate the number of the black fly larvae living in a simillar habitat of river bottom measuring 50 m by 10 m.

3.According to the 2001 census, the population of Canada had reached 30 007 094 people.

  1. what is the population density of Canadians if Canada’s land area is 9976000 km2?
  2. Using our population as an example, explain why the ecological density of a species is usually greater than its crude density.

4.Natality, mortality, immigration, and emigration are all terms related to any population.

(a) Describe briefly what each term means.

(b) Explain briefly how each process affects a population

(c) Which of the terms do not relate to a closed population? Explain why not.

(d) Brainstorm several examples of closed populations that occur naturally. Contrast these with examples of closed populations produced by human intervention or other activities.

 

5.Calculate the absolute growth of the Ontario population between July 21,2000 and June 30,2001, given the following data from Statistics Canada. During

that year there were:

(i)130 672 births

(II) 87 565 deaths

(III) 149 867 immigrants

(IV) 32 156 emigrants

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