Characteristics of population composition

Meaning, the population at any time is equal to the earlier population plus the excess of births over deaths in the time, plus the amount of in-migration minus the amount of out-migration. Population composition[ edit ] Population composition is the description of population defined by characteristics such as age, racesex or marital status. These descriptions can be necessary for understanding the social dynamics from historical and comparative research.

Characteristics of population composition

Contact Disaster Risk and Vulnerability: A large, violent tornado, for instance, passing through an open field presents little danger. On the other hand, a relatively weak tornado can pose significant risks to human life and can result in great economic losses in densely populated areas.

While the intensity is important, of equal or greater importance is the presence of a population whose demographic or socioeconomic characteristics may place its members at greater risk of harm before, during, and after a disaster.

Consequently, policies aimed at addressing risk and vulnerability must also take into account these differential impacts and outcomes of disasters. Population Growth and Distribution Population growth and distribution, especially increased population density and urbanization, increases vulnerability to disasters.

Congestion, limited escape routes, dense infrastructure, and poverty add to the vulnerability. Cities and countries in other regions of the world face similar problems.

For example, researchers argue that in countries such as China, urban earthquakes are more dangerous because of the density of the infrastructure.

Commonly issued in English, disaster warnings may be misunderstood or not understood at all by Spanish-speaking individuals. During the Indian Ocean tsunami, women and children were more likely to suffer injuries and fatalities than men and boys were.

The effects of age and disability on disaster vulnerability were clearly seen among elderly individuals trapped in nursing facilities during Hurricane Katrina.

How can we expand and strengthen our research initiatives to enhance our understanding of differential vulnerability and to develop more effective policies to protect diverse population groups from disasters, while recognizing the unique risks and vulnerabilities that underrepresented groups confront?

References Ben Wisner et al. Princeton University Press, Quijia Zou et al. Institute of Geophysics, State Seismological Bureau, Elaine Enarson and Betty H. Ethnicity, Gender, and The Sociology of Disasters, ed. Changing the Face of America New York: Perspectives on a Modern Catastrophe, 2d ed.

Bullard and Beverly Wright Denver:Demographics. This page contains information about national labor force statistics with demographic characteristics available from the Current Population Survey (CPS). enables users to search for and extract data from across ABS databases.

Population dynamics is the branch of life sciences that studies the size and age composition of populations as dynamical systems, and the biological and environmental processes driving them (such as birth and death rates, and by immigration and emigration).Example scenarios are ageing populations, population growth, or population decline.

Prosperity Quick Statistics. About People Living in Seattle. American Community Survey (ACS) estimates: Share of population (25 years and older) with a bachelor's degree or higher: 63%.

The Bureau of Labor Market Information and Strategic Initiatives houses Michigan's State Demographer. The State Demographer is Michigan’s representative to the Federal-State Cooperative for Population Estimates (FSCPE) which is the main program at the U.S.

Census bureau through which Michigan has input into the estimates for total population and population by county, city, age, gender, and.

Characteristics of population composition

Each population is a separate entity showing several characteristics such as spacing, size, density, natality, mortality, age structure, growth, fluctuations and cycle.

Dallas-Fort Worth-Arlington, TX MSA Situation & Outlook Report