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Biological dispersal can be correlated to population density. The range of variations of a species' location determines the expansion range. [6] Biological dispersal may be contrasted with geodispersal, which is the mixing of previously isolated populations (or whole biotas) following the erosion of geographic barriers to dispersal or gene flow.
Oceanic dispersal is a type of biological dispersal that occurs when terrestrial organisms transfer from one land mass to another by way of a sea crossing. Island hopping is the crossing of an ocean by a series of shorter journeys between islands, as opposed to a single journey directly to the destination.
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]
A dispersal vector is an agent of biological dispersal that moves a dispersal unit, or organism, away from its birth population to another location or population in which the individual will reproduce. [1] [2] These dispersal units can range from pollen to seeds to fungi to entire organisms.
Dispersal may refer to: Biological dispersal, the movement of organisms away from aggregations of individuals such as movement from their birth site Dispersal vector, forces that carry seeds for plants; Oceanic dispersal, the movement of terrestrial organisms from one land mass to another by sea-crossing
Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time.Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, isolation and habitat area. [1]
Dispersal of microbial organisms, including fungi, viruses and bacteria; The role of hunger (this article goes into it, though a better reference could be found) Dispersal by humans (main article: introduced species) Reference the article; Add a diagram showing the survival and predation on seeds with dispersion distance from a tree
Biotic interchange is the process by which species from one biota invade another biota, usually due to the disappearance of a previously impassable barrier. [1] These dispersal barriers can be physical, climatic, or biological and can include bodies of water or ice, land features like mountains, climate zones, or competition between species.