IB Topic 3.1 Human Population Dynamics - PowerPoint PPT Presentation

1 / 9
About This Presentation
Title:

IB Topic 3.1 Human Population Dynamics

Description:

Human Population Dynamics Subtopics 3.1.1 Describe the nature and explain the implications of exponential growth in human populations. 3.1.2 Calculate and explain ... – PowerPoint PPT presentation

Number of Views:359
Avg rating:3.0/5.0
Slides: 10
Provided by: wikis717
Category:

less

Transcript and Presenter's Notes

Title: IB Topic 3.1 Human Population Dynamics


1
IB Topic 3.1 Human Population Dynamics
2
Subtopics
  • 3.1.1 Describe the nature and explain the
    implications of exponential growth in human
    populations.
  • 3.1.2 Calculate and explain, from given data,
    the values of crude birth rate, crude death rate,
    fertility, doubling time and natural increase
    rate.
  • 3.1.3 Analyze age/sex pyramids and diagrams
    showing demographic transition models.
  • 3.1.4 Discuss the use of models in predicting
    the growth of human populations.

3
3.1.1 Population Growth (Summary of how
ecosystems changeTBCh4)
  • Exponential growth when organisms have enough
    food, water, and space optimal conditions. But,
  • Limiting factors
  • Density-dependent (usually biotic)
  • Internal
  • External
  • Density-independent (usually abiotic)
  • Carrying capacity (K) maximum number (or load)
    of individuals an environment can support
    SUSTAINABLY

4
3.1.1 Vocabulary Terms
  • Human Development Index (HDI)
  • Is measure of well-being in a country
  • ? Life expectancy
  • ? Standards of living
  • ? Education
  • ? Per capita gross domestic product (GDP)
  • MEDC More Economically Developed Countries
  • Developed EU, North America, Japan, Israel,
    and others
  • LEDC Less Economically Developed Countries
  • Developing Most countries beyond above
    geographic boundaries

5
3.1.2 Growth Calculations
  • Crude Birth Rate (CBR) number of births
    (natality) per 1000 individuals per year (where p
    midyear popln, b and d of births and deaths
    per year.)
  • Crude Death Rate (CDR) number of deaths
    (mortality) per 1000 individuals per year
  • Natural Increase Rate (RNI) gives percentage
    growth (excluding migration)
  • Doubling Time

6
  • General Fertility Rate (GFR) number of births per
    1000 women (15-49 yrs)
  • Age-specific Birth Rate (ASBR) number of births
    per 1000 women (in a specific age group, in a
    geo. area)
  • Total Fertility Rate (TFR) number of births per
    thousand women of childbearing age
  • TFR (h x ? ASBR)/1000 Where hthe number of
    years in the age cohorts for the ASFR.
  • Replacement Fertility Level enough babies to
    replace adults
  • MEDC 2.03
  • LEDC 2.16

7
Calculating TFR from ASBR
  • Age Specific Birth Rate
  • total number of births 1000 women of any
    specified year group (s)

8
3.1.1 Human Populations
9
3.1.1 Human K
  • Carrying capacity
  • Technology
  • Medicine
  • Resource desire (dynamic)
  • Resource needs
  • urban vs. rural
  • Wealth of population
Write a Comment
User Comments (0)
About PowerShow.com