PPT-Population and Growth

Overpopulation Proponents and Critics Malthus Basics Idea late 1700s During this time before the industrial revolution he predicted that the growing population would eclipse the available food supply . Michael Ward. London and the Nation Conference. Birkbeck, 10 July 2015. Which London? . Summary. 1 diagram – population change. 1 policy change: from an old to a new consensus . Issues for the future. Photo of introduced (exotic) rabbits at “plague proportions” in Australia from Wikimedia Commons.. Life Cycle Diagram. 0. 1. 2. 3. 0.3. 0.8. 0. 2. 4. seed. 1 to 2 . yr. old . adult. 2. to 3 . yr. Chapter 2 Key Issue 3. Earth. ’. s Population History. 1 billion reached circa 1830. 2 billion reached 1930 (100 years later). 3 billion reached 1959 (29 years later). 4 billion reached 1974 (15 years later). SHEN KE. Course. . description. Study of . demography. : . the systematic and scientific study of human populations. . Origin of the word . demography. The term . demography . was first used in 1855 by the Belgian statistician Achille Guillard in his book . and Mechanisms. Species and Population. Organism. Species. : genetically similar organisms that reproduce. Population. : all members of . a. species in an area. Characteristics of populations:. Same species living in same area. Chapter 15. Population Change. https://. www.youtube.com/watch?v=ozDskXxmdDI. Population Change. Size and Structure of Population. Birthrate. – annual number of live births per 1,000 members of a population. Chapter . 5. Key Concepts. Species . interactions. Responses to changes in environmental . conditions. Factors determining number of species in a community. Species Diversity and Ecological Stability. 5-1: How Populations Grow. What is a population?. . Group of individuals of the same species in a given area.. 5-1: How Populations Grow. Characteristics of Populations:. Geographic Distribution (Range). Size. 2. Density. 3. Growth rate. 4. Survivorship. 5. Age structure. Each population has a density, a dispersion, and a reproductive strategy.. . Populations. Population density is. a measurement of the number of individuals living in a defined space.. Solutions. Global pop Growth Rate: Sample 1. Population growth rate – . Population growth rate – . (20 - 8). 10. Worldwide, there were 20 births and 8 deaths per 1,000 in 2009. Calculate the growth rate of the . World population. Watch this. World population growth has been exponential. Mind map the possible positive and negative implications this growth could cause...adding examples wherever you can. Whose right?. 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. 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. Month. Rainfall (mm). Dry . s. eason vegetation . t. ype = . l. ong grass & open woodland. Wet . s. eason vegetation . t. ype = short grass plains (productivity, nutrients). Synchronized birth pulse, .