Study Guides (248,519)
UNI101Y1 (52)

# Ch11 Population Growth and Regulation4.pdf

1 Page
49 Views

Department
University College Courses
Course
UNI101Y1
Professor
Spencer Barrett
Semester
Winter

Description
 stable age distribution and constant growth rate achieved by a particular pop. depend on the age-specific survival and fecundity rates of its indiv. o any change in those rates alters the stable age distribution and results in a new rate of pop. growth  # of indiv. at time t, n (x), x is age  pop. was projected by multiplying the # of indiv. in each age class by the survival to obtain the # in the next older age class in the next time period: n (t) = n (x-1)s x-1 x  # of indiv. in each age class was multiplied by its fecundity to obtain the # of new borns: n (0) = Σn (x)b x  age structures of human pop. represented by pop. pyramids A Life Table Summarizes Age-Specific Schedules of Survival and Fecundity  life tables can be used to model the addition and removal of indiv. in a pop. (in the absence of immigration and emigration)  life tables are usually based on females since it is hard to ascertain paternity in many species  life table: Age (x), Survival (s ),xFecundity (b ), Nxmber of Individuals (n ) x  x = max. age, s = x  x = 0, b x 0  when reproduction occurs during a brief reproductive season each year, each age class is composed of a discrete group of indiv. born at approx. the same time  when reproduction is continuous (ex. humans), each age class can be designated arbitrarily as comprising indiv. b/w ages x - ½  the ffecundityof females is often expres
More Less

Related notes for UNI101Y1
Me

OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Join to view

OR

By registering, I agree to the Terms and Privacy Policies
Just a few more details

So we can recommend you notes for your school.