Chapter06-07

Chapter06-07 - Population Dynamics and Human Populations...

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Population Dynamics and Human Populations Chapters 6 & 7
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Exam I Results 0 5 10 15 20 25 30 35 29.5 34.5 39.5 44.5 More Frequency F D C B A Exam 1 Scores 0 40 50 60 70 29.5 34.5 39.5 44.5 More Grade Number of Students F D C B A Spring 2008 doesn’t yet include XC FYI, Spring 2006 FYI, Spring 2007 Exam I 0 80 29.5 34.5 39.5 44.5 More Grade # Students F D B A
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After studying Ch 6 & 7 you should Intimately understand the three types of population growth Understand the process of human population growth Understand how demographic parameters are defined and the factors that cause them to change Explain the process of demographic transition Understand definition of “family planning,” the need for family planning, and the diff alternatives for birth control
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Please consult these sites when reviewing Ch 6-7 http://www.cia.gov/cia/publications/factbook/index.html Factbook http://www.census.gov/main/www/popclock.html 6.65 Billion ! ! ! ! ! http://www.prb.org/Articles/2002/HowManyPeopleHaveEverLivedonEart h.aspx How many people ever? http://members.aol.com/trajcom/private/popco2.htm & Global Warming http://www.uwsp.edu/business/economicswisconsin/e_lecture/pop_sum. htm Good for Malthus and ZPG http://www.un.org/esa/population/publications/WPP2005/wpp2005.htm World population stats http://overpopulation.org/culture.html see population pyramids http://www.indexmundi.com/ similar to World Fact Book – have fun! http://www.worldwatch.org/ see the 4 featured publications along right hand margin of this page
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Population Dynamics Environmental Resistance environmental factor that reduces population growth Carrying Capacity max pop an ecosystem can support over long time Types of Growth Years 0 1 02 03 04 0 # Individuals ( x 10 6 ) 0 1 2 3 4 5 6 7 8 Exponential @ 5% without limits Logistic @ 5% w/ Environmental Resistance Arithmetic (+ 5,000 indiv. per yr) VIMP ! VIMP ! Arithmetic (Linear) Growth - . - . - . - . - . - Growth by adding a constant amount per unit time Exponential (Geometric) Growth “ J Growth at a constant rate of increase per unit time Logistic (Limited) Growth S Growth rate slows as population approaches carrying capacity
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Typical plant or animal population growth cycle Typical plant or animal population growth cycle theoretical actual
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Human Population History 1334-1355 1850-1950
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Estimated Human Population Growth
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Human Population Growth Until the Middle Ages, human populations were held in check by diseases, famines and wars, and thus grew very slowly.
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This note was uploaded on 04/22/2008 for the course BIOL 103 taught by Professor Brown during the Spring '08 term at VCU.

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Chapter06-07 - Population Dynamics and Human Populations...

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