CAS GE 100 Lecture Notes - Lecture 10: Ecosystem Services, Total Fertility Rate, Birth Rate

• School: Boston University
• Department: Geography & Environment
• Course: CAS GE 100
• Professor: Aaron Garrett

Document Summary

Population- a group of individuals of the same species that inhabit a specific area. Change in population= birthrate- deathrate: or = the change in population/ the change in time. Maximum intrinsic growth rate = rmax: dn/dt=rmax*n, if rmax > 1 then growth will be exponential. Factors that slow growth: density independent factors. Factors that are not related to population size, e. g. weather: density dependent factors. Factors that are related to population size. Human population dynamics: crude birth rate= # births per 1000 people, crude death rate = # deaths per 1000 people, total fertility rate = average # of children a woman will bear, replacement level fertility. Demographic transition: as countries become more developed the population rate is able to decrease. Modifying the idea of carrying capacity for people: the malthusian dilemma, human population grows exponentially, food production increases linearly o.