25 - Human Population Ecology(Some Peculiarities of 1 2 3 4 5 6 7 8 9 No obvious reproductive strategy Environmental resistance partly(mostly

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Human Population Ecology (Some Peculiarities of) 1) No obvious reproductive strategy 2) Environmental resistance partly (mostly?) cultural 3) Strong TYPE I (convex) survivorship curve 4) High biotic potential (r) 5) Growth curve in a steep exponential climb 6) Positive correlation between population density and fertility rate 7) Long post-reproductive lifespan – to 1/3 or more of the typical lifespan 8) No clear indication of carrying capacity (K) 9) Cultural influence on (or control of ?) demographic characteristics Human Population Doublings 1800 human population reached 1 billion 1930 2 billion 1980 4 billion 2007 6.6 billion 2025(mid) 8.0 billion(estm) 2050(mid) 9.3 billion (estm) History of US Population in Millions of People: 100 over human history 1915 200 52 yrs 1967 300 40 yrs 2007 400 37 yrs (estm.) 2044 Approximately 1% of ALL the people who have ever lived on earth are alive TODAY(estms. = 1-10%)! 8 trillion US dollars per year (estms. in 1990 $$ = $2-17t): = estimate for providing everyone in the world with adequate: food, water, housing, education & health = equals ttl. world military spending for 2 wks. m, b, t in 1K$ bills 4.5in ″375’ 71mi. Human Population Ecology 9/20/07 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
HUMAN POPULATION GROWTH (In TERMS OF DOUBLING TIMES) Present human population = 6.6 x 10 9 2 32 human population has doubled
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/27/2008 for the course EBIO 1030 taught by Professor Cundiff,mi during the Fall '07 term at Colorado.

Page1 / 6

25 - Human Population Ecology(Some Peculiarities of 1 2 3 4 5 6 7 8 9 No obvious reproductive strategy Environmental resistance partly(mostly

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online