Ecology- Population growth/life tables

Oct 9th, 2015
Sigchi4life
Category:
Biology
Price: $10 USD

Question description

DATA HAS ALREADY BEEN FILLED OUT FOR YOU:

These data represent a composite of the demographics from 1974 to 2004, which coincided with a period of urban and suburban expansion leading to region-wide loss and fragmentation of forest habitat. The Wood Thrushes breed in North America and spend winters in Central America.

Age

Population Size

Fecundity

bx

Survivorship

lx

lxbx

x(lxbx)

eggs

1736

--

--

--

--

1

286

2.4

0.1647

0.39528

0.39528

2

109

3.1

0.0627

0.19437

0.38874

3

74

3.7

0.0426

0.15762

0.47286

4

39

3.4

0.0224

0.07616

0.3464

5

27

3.8

0.0155

0.0589

0.2945

6

15

2.4

0.0086

0.02064

0.12384

7

9

3.1

0.0051

0.01581

0.11067

8

4

1.3

0.0023

0.00299

0.02392

2) Ro = Σ lxbx

= Σ 0.39528 0.19437 0.15762 0.07616 0.0589 0.02064 0.01581 0.00299 = 0.92177

Generation Time

T = (Σ x(lxbx))/ (Σ lxbx )

Σ x(lxbx) = Σ 0.39528 0.38874 0.47286 0.3464 0.2945 0.12384 0.11067 0.02392 = 2.15621

T = 2.15621/0.92177 = 2.3392

6) Project future population size at t = 10, 25, 50, 75, and 100 years, using the following equations.

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