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The term "diaspora" is derived from the Ancient Greek verb διασπείρω (diaspeirō), "I scatter", "I spread about" which in turn is composed of διά (dia), "between, through, across" and the verb σπείρω (speirō), "I sow, I scatter". The term διασπορά (diaspora) hence meant "scattering". [27]
Epilobium hirsutum — Seed head. In the broadest sense, dispersal occurs when the fitness benefits of moving outweigh the costs. There are a number of benefits to dispersal such as locating new resources, escaping unfavorable conditions, avoiding competing with siblings, and avoiding breeding with closely related individuals which could lead to inbreeding depression.
Biogeography is a synthetic science, related to geography, biology, soil science, geology, climatology, ecology and evolution. Some fundamental concepts in biogeography include: allopatric speciation – the splitting of a species by evolution of geographically isolated populations
Achenes of a dandelion ()In botany, a diaspore is a plant dispersal unit consisting of a seed or spore plus any additional tissues that assist dispersal. In some flowering plants, the diaspore is a seed and fruit together, or a seed and elaiosome.
Species distribution, or species dispersion, [1] is the manner in which a biological taxon is spatially arranged. [2] The geographic limits of a particular taxon's distribution is its range , often represented as shaded areas on a map.
In many ways, the Jaffnese Diaspora is compared to the Jewish Diaspora, both historically, socially and economically. It is a subset of the greater Tamil Diaspora . Jamaican diaspora – An estimated 3 million Jamaicans live outside the island country of Jamaica , an English-speaking majority African descendant country in the Caribbean.
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
The African diaspora is the worldwide collection of communities descended from people from Africa. [48] The term most commonly refers to the descendants of the native West and Central Africans who were enslaved and shipped to the Americas via the Atlantic slave trade between the 16th and 19th centuries, with their largest populations in the United States, Brazil, Colombia and Haiti.