Reference no: EM132734634

1. a) What is the difference between "crude density" and "ecological density?"

b) Why is this distinction (i.e., crude versus ecological density) necessary? Which of these two measures of density is typically higher?

2.

a) Describe three types of dispersion patterns. Include a diagram with your description. Provide an example of each type from nature.

b) What ultimately determines what type of dispersion pattern a species exhibit in an area?

c) Which type of dispersion pattern is rarest in nature? Why do you think that this is the case?

3.

a) What is meant by the term "fecundity"?

b) Do all species show the same fecundity? Provide examples of species with high fecundity. Provide examples of species with low fecundity.

c) Compare the reproductive strategies of a short-lived species such as a starfish and a long-lived species such as a hippopotamus.

4. What are THREE different patterns in "survivorship" that species exhibit? For each pattern:

a) Use a graph/figure to illustrate the pattern,

b) Describe characteristics of species that show that pattern

c) Provide an example of a species that exhibits that pattern