PPT-Serengeti Wildebeest: Density-dependent population growth

Month Rainfall mm Dry s eason vegetation t ype l ong grass amp open woodland Wet s eason vegetation t ype short grass plains productivity nutrients Synchronized birth pulse . Case Study: . Serengeti Lion Population Study. Panthera. . leo. “They say that cats have nine lives, but they don’t say that about the Serengeti lion. Life is hard and precarious on this unforgiving landscape”. 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. ) . Wildebeest Migration. LO: To find out how and why 1.3 millions wildebeest migrate 1800 miles each year.. Refer back to your map of Africa. Last lesson we were looking at Kenya. Today we are looking at Tanzania. . ECOL 8310, 11/17/2015. Why do ecologists study host-parasite interactions?. Major regulator of wildlife population dynamics. Control. 1 Treatment. 2 Treatments. Trichostrongylus. . tenuis. Lagopus. . Agenda for . Monday Jan 30. th. . Populations notes. Population worksheet. Why study populations?. Learn how organisms change over time, problems in an environment, and relationships between . organisms. Zebra Classification. Scientific name: Eguus Quagga. Zebras are warm-blooded. Zebras are vertebrates. Habitat. Where zebras live!!!. Zebras live in the African Savanna, the Serengeti, and the Eastern and Southern African.. How does a country meet the challenges created by a large and growing population?. What do the bright areas represent?. What countries do you see in this image?. What country appears to be missing? Why?. Research Question. . . How . much of an average household’s nutritional requirements are fulfilled by illegally poached meat and how does this affect ecosystem health and social relations within local . When we examine the population of the world we see that it is distributed unevenly- some places are more populated than others. Population Distribution- . The way people are spread across a given 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 . An interbreeding group of the . same species. living in the same general area. may be distinguished by natural or . . arbitrary boundaries. Population Density vs Dispersion. the number of individuals per unit area or volume.