CHP 4 Human predicament 11

CHP 4 Human predicament 11 - CHP 4 April 4, 2011 2011 Case...

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CHP 4 April 4, 2011 Woodruff - Human predicament 1 2011 Case Studies Sign up on https://sections.ucsd.edu A01 MON 3:00p WLH 2208 Ethics A02 MON 4:00p WLH 2208 Ecotourism A09 Tu 09:00a WLH 2114 National Parks A10 Tu 4:00p U413-1 Marine A03 WED 5:00p WLH 2209 Food A04 WED 6:00p WLH 2209 Climate A05 Th 2:00p SOLIS 111 Zoos A06 Th 3:00p SOLIS 111 Zoos A07 FRI 12:00p HSS 2152 Marine A08 FRI 1:00p HSS 2152 Media Exam I Friday April 22 30% Case Study Report Wed May 20 20% Exam 2 Friday May 25 30% Final exam Monday June 6 10% TEXTBOOKS – PRICE CENTER BOOKSTORE Primack Primer of Conservation Biology 4th Edn. SECTIONS/CASE STUDIES Sign up on https:// sections.ucsd.edu Sections start today. Section paperback books are on sale at bookstore. Buy only the one relevant to your Case Study. Wednesday: Screening of A Place Without People 7-8:30pm Center 212 Conservation and the Human Predicament The story so far: The biodiversity crisis: species extinctions and the roots of conservation awareness. Half the big animals threatened with extinction The global predicament: the conquest of nature and the ecological footprint. One species now threatening the life-supporting ecosystem services taken for granted The human predicament: The root cause of the crisis and predicament: the population explosion THE HUMAN POPULATION The human population increased relatively slowly until about 1650 and then began to grow exponentially Paul and Anne Ehrlich (1968) The Population Bomb . Alerted people to the importance of environmental issues and brought human numbers into the debate on the human future. No population can grow indefinitely, and humans are no exception. Human population growth has just begun to slow after centuries of exponential increase Human numbers and resource consumption are the single biggest driver of all the threats to biodiversity and ecological services. QUICK QUIZ What is the size of the human population today? What is the population of California? What is the population of the USA? How many additional people will be added to the species population this year? How many new people (net new) were added this hour? Future of biosphere depends on the level at which the population stabilizes 50 billion 5 billion
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CHP 4 April 4, 2011 Woodruff - Human predicament 2 Fig. 53-22 8000 B.C.E. 4000 B.C.E. 3000 B.C.E. 2000 B.C.E. 1000 B.C.E. 0 1000 C.E. 2000 C.E. 0 1 2 3 4 5 6 The Plague Human population (billions) 7 2010: 6.9 billion 6,953,386,274 on March 26 th Face of 7 billion 7,000 ±gures each representing 1 million people National Geographic Magazine January 2011 28-yr old Han Chinese male The Human Population • The human population increased relatively slowly until about 1650 and then began to grow exponentially • Demographic transition: Improvements in public health and nutrition led to fall in death rates. Birth rates lagged and typically fell 25-150 years later. In the interim, the population grew rapidly. • Population explosion exacerbated by the
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CHP 4 Human predicament 11 - CHP 4 April 4, 2011 2011 Case...

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