PPT-Population

Learning outcomes for today Define a population and describe the attributes that make up that population Describe the 3 types of population distribution Work in a pair to learn about survivorship curves and age structure. 1 Introduction 2 Demographic and other assumptions 3 Indicators from Spectrum 03 Population over 60 2012 919 Life expectancy at birth 2012 Total Male Female 79 Both sexes 76 Male 83 Female Neonatal mortality rate per 1000 live births 2012 11 717 Both sexes Under5 mortality rate per 1000 live births 2012 18 1324 Both sexes Mat and projections. For many years people have written about the “why’s” and “how’s” of population growth. Optimists have concentrated on how the people adapt to the demands of population. Pessimists write about the problems that population growth has caused or may cause. The population of agricultural holdings is comprised of . Household Holdings . and . Non-Household Holdings. Non-Household Holdings. – . Government Farms, Research Stations, etc.. Schools, Prisons, Other Government Institutions with Farms. Population structure . in case-control studies. Population consists of underlying subpopulations.. Disease prevalence different between subpopulations.. Cases preferentially ascertained from specific subpopulations.. Image from Wikimedia Commons. Global human population. United Nations . projections (2004) . (. red. , . orange. , . green. ). . U. S. Census Bureau modern (. blue. ) . & historical . (. black. ) . Population Characteristics. Density. - # of individuals per unit of . area. Determined by…. counts . sample size estimate . indirect indicators . mark-recapture. Dispersion. Overpopulation: Proponents and Critics . Malthus Basics. Idea: late 1700’s. During this time (before the industrial revolution) he predicted that the growing population would eclipse the available food supply. . Environmental Science. 9.1 Studying Human Populations. The human population has grown . faster. . in the . 20th. . century than it has ever before.. This rapid growth has led to . environmental problems. Population Receiving Analog Service2081324 Population Receiving Digital Service2434487 Analog Population Losing Service45909 gital Service399072 Gain353163 BentonCrookDeschutesJeffersonLaneLincolnLinn is concerned with the question of whether a particular allele or genotype will become more common or less common over time in a population, and Why.. Example: . Given that the CCR5-. D. 32 allele confers immunity to HIV, will it become more frequent in the human population over time?. Most . populations . live together in clumps or patches.. Populations can grow, shrink, or remain stable. Population Dynamics. Age Structure. – proportions of individuals at various ages. Population Density. . Distribution. Spread of . population; pattern of human settlement. Aka dispersed distribution. Relates to density. Humans live only in certain areas (that they can get food, water, and shelter) and there is a pattern to it. System -. Session . 3: Population Concepts used in DYS: Improvement of Population and Vital Statistics metadata . - . Botswan. a. by . Grace Mphetolang . Manager – Census and . Demography. Statistics Botswana.