HUMAN POPULATION ECOLOGY

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HUMAN POPULATION ECOLOGY
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Human Population and Exponential Growth Model
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Age Structure and Exponential Growth 1 Sum(
lx mx) / erx
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Demographic Transition
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Annual Growth Rates Sub-Saharan Africa 2.5 (693
million people) Botswana 0.8 (1.6 million
people) Palestinian Territory 3.5 (3.5) US
1.7 (287) World 1.2 (6300 million
people)
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The decline in human r suggests something is
regulating the human population
Resources Space War Disease Sanitation Economic
s Contraception Education Endocrine Disruption Do
we know?
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Total Contraception use explains about 62 of the
variance in annual population growth rate.
Data from Population Reference Bureau 2000 World
Population Data Sheet http//www.prb.org/Content/
NavigationMenu/Other_reports/2000-2002/2001_World_
Population_Data_Sheet.htm
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Data for the 21 Countries with N gt 50M in
2000 Data from Population Reference Bureau Simple
Regression Analysis
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What is the role of disease in modern human
Population Regulation? McMichael and
Sensationalism The War metaphore.
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Mortality Bill Summary London, 1641
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Wolbachia (news article by Zimmer). Bacterial
infections affect many aspects of invertebrate
ecology Health Competition Sex
Ratio Evolution Speciation
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Influenza Dispersal in the 1960s.
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http//www.who.int/mip/2003/other_documents/en/cau
sesofdeath.pdf

• Rank Cause Total Global Deaths (millions) in
  2001 -- WHO
• Ischaemic heart disease 6.9
• Cerebrovascular disease 5.1
• Lower respiratory infections 3.9 Mycoplasma
  spp.
• HIV/AIDS 2.9
• Chronic obstructive pulmonary disease 2.5
• Perinatal conditions 2.4
• Diarrhoeal diseases 2.1
• Tuberculosis 1.67
• Road traffic accidents 1.26
• Trachea, bronchus, lung cancers 1.21
• Malaria 1.08
• Hypertensive heart disease .94
• Self-inflicted injuries .81
• 14 Diabetes mellitus .80
• Cirrhosis of the liver .78
• TOTAL 56.5 Out of 62,000 0.9
• Total mortality about 0.9 per year

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