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In biogeography, geodispersal is the erosion of barriers to gene flow and biological dispersal (Lieberman, 2005.; [1] Albert and Crampton, 2010. [2]). Geodispersal differs from vicariance, which reduces gene flow through the creation of geographic barriers. [3]
Isolation by distance (IBD) is a term used to refer to the accrual of local genetic variation under geographically limited dispersal. [1] The IBD model is useful for determining the distribution of gene frequencies over a geographic region. [ 2 ]
A dispersed settlement contrasts with a nucleated village. The French term bocage is sometimes used to describe the type of landscape found where dispersed settlements are common. In addition to Western Europe, dispersed patterns of settlement are found in parts of Papua New Guinea, as among the Gainj, Ankave, and Baining tribes. It is also ...
Advanced Placement (AP) Human Geography (also known as AP Human Geo, AP Geography, APHG, AP HuGe, AP HuG, AP Human, HuGS, AP HuGo, or HGAP) is an Advanced Placement social studies course in human geography for high school, usually freshmen students in the US, culminating in an exam administered by the College Board.
The spatial distribution of the population and development are closely related to each other, especially in the context of sustainability.The challenges related to the spatial spread of a population include: rapid urbanization and population concentration, rural population, urban management and poverty housing, displaced persons and refugees.
Human-aided dispersal, an example of an anthropogenic effect, can contribute to biological dispersal ranges and variations. [36] Informed dispersal is a way to observe the cues of biological dispersal suggesting the reasoning behind the placement. [37] This concept implies that the movement between species also involve information transfer.
A wildlife corridor in Brazil.. A wildlife corridor, also known as a habitat corridor, or green corridor, [1] is an designated area that connects wildlife populations that have been separated by human activities or structures, such as development, roads, or land clearings.
However, as Erin Mooney has pointed out, "global statistics on internal displacement generally count only IDPs uprooted by conflict and human rights violations. Moreover, a recent study has recommended that the IDP concept should be defined even more narrowly, to be limited to persons displaced by violence."