GEOG 1HA3 Lecture Notes - Lecture 5: Fecundity, Carrying Capacity, Resource Distribution
21 Oct 2016
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Changes in population size can be understood by 2 references fertility + P0 = population at time 0 (before time 1) P1 = p0 + b d + i e. Migration is the third factor that becomes relevant at sub-global level: Cbr: subset women giving birth: most common measure, = total number of live births for every 1000 people, called (cid:494)crude(cid:495) b/c relates to total population = misleading/doesn(cid:495) Cbr = (number of lives births in 1 year / mid year total population) x 1000 (cid:498)fecundity(cid:499) = ability of a woman/man to produce a live child. Tfr = # of births to women in age group a / mid year number of women in age (cid:498)replacement-level fertility(cid:499) = level of fertility at which a couple has only. Tfr = average number of children a woman will have: age specific measure b/c child-bearing enough children to replace themselves group a. Biological factors: key factor is fecundity.
