PPT-Population Density

Day 12 Population Density the number of people living on a square mile of land A large area of land with few people is said to be sparsely populated A small area of land with . PowerPoint Slides for Chapter . 24:. Homeostasis at the Population Level. by. A. Malcolm Campbell, Laurie J. Heyer, and Chris Paradise. A . peregrine falcon, . Falco . peregrines. Figure UN24.1. Frequency map . Day 12. Population Density. : the number of people living on a square mile of land.. A . large area. of land with . few. people is said to be . sparsely. populated.. A . small area. of land with . Population Distribution. Population distribution explains . where people . live.. Why do some people prefer to live in region A compared to region B?. What factors are involved in people migrating (moving) from one place to another?. • 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?. 7 billion and growing. How can humans cause population decline in other species?. “As dead as a dodo”. humans . Mauritius, . dogs. pigs. cats. rats. nests, . forests. Four ways humans can cause population decline are:. Image from Wikimedia Commons. Global human population. United Nations . projections (2004) . (. red. , . orange. , . green. ). . U. S. Census Bureau modern (. blue. ) . & historical . (. black. ) . and Applications . (Common Core Standard G-MG.2) Practice applying concepts of density with an area and volume modeling situation.. What is Density??. Density is a measure of how much matter is in a certain volume or area .. Density-dependent: . something that depends on the amount of organisms in a unit . area. . (5 examples to follow). So what in the world is a density-dependent limiting factor??. Crowded populations mean the individuals have to compete for food, water, space, sunlight, or anything else necessary for survival and reproduction. 3 characteristics of all populations. Density. The number of organisms of the same species per unit area (25 people per classroom). Dispersion. The pattern of population distribution. Ranges. Limited by biotic and abiotic factors. ?. A large, dense population or . a small, scattered population. A small, scattered population. Two . ways a population can decrease in size?. decreased birthrate and emigration. Suppose that a species of . I Density(D). An object’s mass compared to its volume. On Earth we can sometimes use weight for mass.. IV Density Facts. Things with . HIGH Density. : Bowling Ball Shot put. Big Marble. Things with . Introduction to linking demography, population growth and extinction due to climate warming. What is Population Ecology? . Goal is to understand . factors. and . processes. that govern . abundance. 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. Course Objectives. Define the following ecological terms: Population, population density, community, population distribution, diversity, Limiting factors, resources, biotic potential (. r ), . carrying capacity .