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Population distribution redirects here. For the probability distribution of a statistical population, see probability distribution and statistical population. In biology, the range or distribution of a species is the geographical area within which that species can be found. Within that range, dispersion is variation in local density. The term is often qualified: Sometimes a distinction is made between a species’ natural, endemic, or native range where it historically originated and lived, and the range where a species has more recently established itself. Many terms are used to describe the new range, such as non-native, naturalized, introduced, transplanted, invasive, or colonized range. Introduced typically means that a species has been transported by humans (intentionally or accidentally) across a major geographical barrier. for species found in different regions at different times of year, terms such as summer range and winter range are often employed. For species for which only part of their range is used for breeding activity, the terms breeding range and non-breeding range are not used. For mobile animals, the term natural range is often used, as opposed to areas where it occurs as a vagrant. Geographic or temporal qualifiers are often added: for example, British range or pre-1950 range. There are at least five types of distribution patterns: Scattered/random (Random placement) Clustered/grouped (Most are placed in one area) Linear (Their placements form a line) Radial (Placements form an ‘ x ‘ shape) Regular/ordered (They are not random at all, but follow a set placement. Much like a grid)

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