Question

some
The population of deer has increased
to 645 from
600 over a period
Capita
birth rate of
a population is 0.125, What should be the
per capita death rate,
​

Answer 1

Answer:

let me try

Explanation:

The effective population size for completely monogamous species having 40 males and 10 females would be - (2015 dec)

a.42 c.20

b.32 d.10 Given -

Ans. NE= 4 NmNf/Nm+Nf Nm-Number of males(40)

=4 40.10/40+10 Nf=Number of females(10)

=1600/50

=32 (Ans is b) NE=Effective population size ?

2. D = Σ n(n-1)/N(N-1) (Simpson’s Diversity Index)

Example:i

A lake contains 934 brown trout, 733 smallmouth bass, 34 catfish, 2003 carp, 234 steelheads, and 32 northern pikes.

Answer 2

Answer: The per capita death rate is 0.05.

Explanation:

Given:

Per capita birth rate, b = 0.125 or 12.5/100 (for easy calculation)

Deer population one year ago, N = 600

Deer population one year after, N2 = 645

To find:

Per capita death rate, d.

Solution:

To find the per capita birth rate (b), Birth by the number in the population (B) is divided by the Deer population one year ago (N), which is denoted as follows;

b = B/N

So, as we don’t have B, we’ll find it as follows;

B = b * N

So, B = 12.5/100 * 600

B = 75

Now, the per capita death rate (d) is found by dividing death by the number in the population (D) by the Deer population one year ago (N). But we do not have D.

So to find D, first, we will subtract N2 by N and find the increase in population (N3), so

N3= 645-600

N3= 45

Now, we will find D by Subtracting N3 from B

So,

D = B - N3

D = 75 - 45

D = 30

Now we will find the per capita death rate (d)

d = D/N * 100

d = 30/600 * 100

d = 5% or 0.05

Hence, the per capita death rate is 0.05.

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