Plot by hand the survivorship data for the Gray Squirrel life table. A survivorship curve has age or age class (x) on the x-axis and lx on the y-axis. the historical and modern populations as wellas to compare survivorship between males andfemales. The life table at right was made byfollowing a cohort of Gray squirrels from birthto death where:x is the age class year (0 is first year, frombirth to 1 year old, etc).nx is the number of squirrels alive at the startof the age class x;Ix is the proportion of the original populationalive at age class x (for x = 3, lx = 48/530=0.09);Table 9.1 Gray Squirrel Life Table012345nx53015980482151.00.30.150.090.040.01dx371793227165dx is the number that die in age class x (starting with 530 at beginning of x = 0, subtract the 159alive at x = 1, giving dx = 371);qx is the mortality rate, calculated by dividing the number dying in age class x by the number aliveat the beginning of that age class (for x = 1, qx = 79/159 = 0.5).9x0.70.50.40.550.751.0

Survivorship curve A graph indicating the percentage of people in a certain species or group who…

Answered: Plot by hand the survivorship data for…

Plot by hand the survivorship data for the Gray Squirrel life table. A survivorship curve has age or age class (x) on the x-axis and lx on the y-axis.

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter44: Population Ecology

Section: Chapter Questions

Problem 4CT: The age structure diagrams for two hypothetical populations are shown below. Describe the growth...

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Concept explainers

Risk Factors

The factors in the body that trigger the probability of suffering from a disease are referred to as risk factors. For example, an excessive increase in an individual's body weight can trigger the chances of getting heart disease. Similarly, if an individual is exposed to carcinogenic substances, it increases the probability of suffering from cancer. These factors can pose a severe threat to the overall health of an individual.

Question

Plot by hand the survivorship data for the Gray Squirrel life table. A survivorship curve has age or
age class (x) on the x-axis and lx on the y-axis.

the historical and modern populations as well
as to compare survivorship between males and
females. The life table at right was made by
following a cohort of Gray squirrels from birth
to death where:
x is the age class year (0 is first year, from
birth to 1 year old, etc).
nx is the number of squirrels alive at the start
of the age class x;
Ix is the proportion of the original population
alive at age class x (for x = 3, lx = 48/530=
0.09);
Table 9.1 Gray Squirrel Life Table
0
1
2
3
4
5
nx
530
159
80
48
21
5
1.0
0.3
0.15
0.09
0.04
0.01
dx
371
79
32
27
16
5
dx is the number that die in age class x (starting with 530 at beginning of x = 0, subtract the 159
alive at x = 1, giving dx = 371);
qx is the mortality rate, calculated by dividing the number dying in age class x by the number alive
at the beginning of that age class (for x = 1, qx = 79/159 = 0.5).
9x
0.7
0.5
0.4
0.55
0.75
1.0

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