BIO/ENV 304 Ecology

Homework Assignment: Population Demography

III.  Life Table:

x

nx

lx

dx

qx

sx

1000 lx

Log10 (1000 lx)

1

500

 

 

 

 

 

 

2

250

 

 

 

 

 

 

3

125

 

 

 

 

 

 

4

63

 

 

 

 

 

 

5

0

 

 

 

 

 

 

 

  1. Complete the above life table.
  2. Construct a survivorship curve.
  3. Is this a Type I, II or III survivorship curve? 
  4. What could be the organism of this life table? 
  5. What are the characteristics of this type of organisms.

II. Fecundity Table:

x

lx

bx

lx bx

x lx bx

1

1

0

 

 

2

0.5

0.2

 

 

3

0.35

0.5

 

 

4

0.2

0.3

 

 

5

0.1

0.1

 

 

6

0

0

 

 

 

 

 

 

 

 

  1. Complete the above table.
  2. Calculate
    1. The net reproductive rate
    2. The mean cohort generation time
    3. The finite rate of increase
    4. The intrinsic rate of increase
  3. The population at year 2005 is 1000.  Please estimate the population at year 2015.