Lec 22 - BIS2b Fall 2009 Lecture 22 Human Population Growth http/www.bradshawfoundation.com/journey 1 Humans are have Latecomers 100,000 yrs An odd

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Human Population Growth BIS2b Fall 2009 Lecture 22 http://www.bradshawfoundation.com/journey/
Background image of page 1

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

View Full DocumentRight Arrow Icon
2 Humans are, have: Latecomers, 100,000 yrs. An odd life history, even among primates. Very slow development; big brains take time, Very sophisticated social systems. Super-exponential growth, Why? Culture > proto-science > technology> agriculture, then modern science >technology> . And as a result, we have spread to be everywhere, & become dense, 50 Kya, modern humans
Background image of page 2
3 Qafzeh, Israel, 95 kya
Background image of page 3

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

View Full DocumentRight Arrow Icon
4 Upper Paleolithic Homo sapiens ca 50 kya Rapid increase in diversity and homogeneity within kinds of artifacts 1. Shaped work: needles, awls, hooks. 2. Spun and woven fiber: human and animal hair and plant material. Lines, ropes, tents, and sewn clothing. 3. Fire for technology, transformed materials, paints. 4. Architecture: camp floors, hearths, "interior design,“ art. 5. Far transport of materials, stone. > Economics. Holocene, 12-10 Kya 1. Agriculture, social hierarchy, dense societies, war. Many times. 1. Science, technology, art 2. Very high population density. Many times. Collapse of dense, powerful early societies. Climate change, invasion, disease, ? 3. Subarctic occupation and adaptation. 4. We cover the globe, affect all ecosystems of the biosphere. European Cro Magnon cave painting as old as 35,000 Ybp to the early Holocene. LEFT ABOVE. From Chauvet Caves LEFT BELOW. From Lascaux Caves
Background image of page 4
5 Fire, clothing, and hand tools… Agriculture discovered at least 10 times, independently in Holocene, never before. From Diamond, J. 1997. Guns, Germs, and Steel.
Background image of page 5

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

View Full DocumentRight Arrow Icon
6 The Birth & Death Rate Model. With the invention of agriculture, both birth rates and death rates increased drastically from what they had been earlier during the upper Paleolithic. The Birth and Death Rate Model λ = 1 + b - d
Background image of page 6
7 How does more food lead to higher birth rates? 1. In many pre-agricultural societies, periods of famine were common. Starving women cannot conceive, carry a fetus to term, or have successful childbirth. 2. Before ag, Many hunter-gathering societies 1. have low average intake of fat and protein, which leads to low body fat and late menarche. 2. Combination of vigorous exercise, low body fat and nursing inferred to
Background image of page 7

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

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/21/2010 for the course BIS 2C BIS 2C taught by Professor Rizzo during the Winter '09 term at UC Davis.

Page1 / 19

Lec 22 - BIS2b Fall 2009 Lecture 22 Human Population Growth http/www.bradshawfoundation.com/journey 1 Humans are have Latecomers 100,000 yrs An odd

This preview shows document pages 1 - 8. Sign up to view the full document.

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