ecology equations

Homework #2 (75 points)

Due October 24, 2014

Review Questions and Problems: 8.8 (with change), 9.2, 9.3, 9.4, 9.5 (Use equations from equation sheet (not textbook) in problem 9.4 and additional problems.)

8.8 Change bx for fruiting plants to bx = 107.54.

Problem (a) for Homework 2. Cohort Life History Table: Calculate survivorship, individual fecundity schedule, and basic net reproductive rate. Estimate generation time and intrinsic growth rate. What assumptions must be met for this intrinsic growth rate to be a good estimate of population growth of the whole population?

Age (x) nx Fx lx bx lxbx xlxbx

0 10,000 0 __ __ ___ ___ 1 5500 0 __ __ ___ ___ 2 3500 0 __ __ ___ ___ 3 1500 3000 __ __ ___ ___ 4 600 8400 __ __ ___ ___ 5 400 3200 __ __ ___ ___ 6 100 600 __ __ ___ ___

Ro =

Gc =

r = R =

Problem (b) for Homework 32 Population growth with differences in compensation: Compare the pattern of growth for populations with differences in compensation (b). Use equations from equation sheet (not book) for problem. The best way to do the comparisons will be to graph the growth of the populations over at least 10 generations. Population parameters for all cases: R = 7.0 K = 3000 N0 = 120

Cases of compensation: 1) b = 1 2) b = 0 3) b = 1.8 4) b = 8