Stock and flow diagrams are composed of two main elements: stocks and flows. Stocks are the accumulations or quantities of something in the system, such as water, money, population, or inventory.

Migration data is counted in two ways: Stock and flow. “The stocks are the number of migrants living in a country,” says Nikola Sander, one of the study’s authors.

Decoding population flow. ... a group leader at the ADRI and a professor of sociology, characterizes and forecasts population and migration patterns using modern statistical demographic methods.

The flow of people moving to Nova Scotia from other Canadian provinces has slowed down over the last two years, meaning the province’s population growth is now primarily made up by international ...