PDF-Population

2BhueuAT Tegecy DaugeinenNeeInformationbeginningthecenturypeopleNepaliThroughyearstheircultureDrukpaslivingthemidcontactbetweenDrukpasbetweentwolegislationmandatedLhotshampasculturearosefollowedenforc. 1 Introduction 2 Demographic and other assumptions 3 Indicators from Spectrum Image from Wikimedia Commons. Global human population. United Nations . projections (2004) . (. red. , . orange. , . green. ). . U. S. Census Bureau modern (. blue. ) . & historical . (. black. ) . Stephen J. Dinsmore. 1. and Douglas H. Johnson. 2. 1. Department of Natural Resource Ecology and Management, Iowa State University, Ames, IA. and. 2. USGS- Northern Prairie Wildlife Research Center, St. Paul, MN. • How many people live on the . earth.. • Where do they . live.. • Why do they . move.. • What does the future look . like.. World Population:. 7,045,230,000. +. Where do. most people . live?. Image from Wikimedia Commons. Global human population. United Nations . projections (2004) . (. red. , . orange. , . green. ). . U. S. Census Bureau modern (. blue. ) . & historical . (. black. ) . Population ecologists are primarily interested in . understanding how biotic and abiotic factors . influence the density, distribution, size, and age structure of populations.. the overall vitality of a population of organisms.. In-build . mechanisms for adaptation. (or evolutionary mechanisms). Biology Stage 3. Text: Chapter 23. Human Biology Stage 3 . Text: Chapter 15. Key ideas. Population genetics. Observable facts. Natural selection. SWBAT compare the factors affecting animal populations to human populations . Why should you study human populations and their growth?. Bellwork. Demography. . is the study of the characteristics of populations, especially human populations.. What is population?. Group of individuals of the same species that live in the same area. Does population change?. Sea otters, kelp, and sea urchins. Kelp forests offer a habitat for sea otters. Sea urchins feed on kelp. 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. 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?. SW: discuss with their groups how estimating a population could be used in a real world situation.. Population Ecology. Measuring a population. Growth Curves. Biotic Potential vs. Environmental. Resistance. . 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.