What does population dispersion mean in geography?

Population dispersion refers to the spread or unevenness of population density across a region or country. Density is the number of people in a given area. Population density is calculated by dividing the population of an area by the area's total land or water surface area. Population density is usually expressed as people per square kilometer, people per square mile, or people per square meter.

What does population dispersion mean in epidemiology?

When it comes to disease, population dispersion refers to the uneven geographic distribution of people. If one community of people is sick, it can be difficult to determine if the disease is isolated in that community or is spreading to other parts of the population. If a disease is isolated in a small community, it is likely that more people in that community will get sick. An isolated disease in many small communities is unlikely to be a threat to the entire population.

What is population dispersion in geography?

Population dispersion refers to the even spread of a population throughout a region. An example of population dispersion is a very spread out metropolitan area – think of the sprawling city of Los Angeles, California. In contrast, population is more likely to be more clustered closer to the center of a metropolitan area in a smaller region.

What does population dispersion mean in population structure?

Population dispersion is related to population structure, meaning the way in which a population is distributed. In order to visually represent the different population structures, we use the population density grid, a two-dimensional population map. One axis shows the diversity of the population (e.g., diversity of people and diversity of culture). The other axis shows the evenness of the population. Evenness refers to the uniformity of the population density throughout a given area.

What does population dispersion mean in population genetics?

Population dispersion is a measure of how genetically similar different populations are to each other. It's usually described in terms of the within-population diversity index (or simply diversity index), which is a measure of the amount of diversity within a single population. A high diversity index implies that many different genetic lineages are represented within the population, whereas a lower diversity index implies that there are fewer lineages. The relationship between diversity and population density is not always simple. A diversity index tends