APES U3 review

Describe the types of distribution

uniform - equal distrance apart

clumped - in groups/herds

random - random

biotic potential and what group has higher biotic potention r or k

max potential growth reate with no limiting resources and r has more biotic potential

cohort ranges

0-14: prereproductive

15-44: reproductive

45+: postrepoductive

types of growths

growing rapidly, slowly, stable, declining

how to determine the type of growth of a age structure diagram

prereproducgive vs reproductive

malthusian theory

food grows linearly and population exponentially. the human carrying capacity depends on food and we will soon outgrow our carrying capacity

3 main factors affecting human pop growth

food, water quality, healthcare

GDP

the total country production divided by total population. total production value of goods

population density formual

population/ area

birth/death rate

births(or deaths)/total pop *100

crude brith/death rate

births or deaths / total pop *1000

population growth

BIDE/total population

rule of 70

g

70/growth rate (as percent)

describe dtm stages

1) high birth and death = no growth

2) high birth and lower death =.rapid gorwth

3) birth rate falls = more stable

4) birth and death are low = comepltely stable

fragmentation

when a habitat is broken into multiple parts by humans are nature, causing species to be separated from their ecossytem and resources, which may kill them and reduce biodiversity if a species has lost access to a resource/part of their food chain

population growth momentum

even as the tfr goes towards 2.1, the population still grows if it has a large younf population