Island biogeography has become an essential component of conservation biology, particularly in the analysis of preserve design, which will be covered in the next lecture. Be sure to keep in mind the basic principles of Island Biogeography and lectures from class. These include the immigration rates of new species, the emigration rates, the extinction rates, the size of the island, and the distance the island is to another land mass. Its purpose is to demonstrate to students that evolutionary problems are complex, and solutions may involve data from various disciplines of …
Wilson of Harvard, developed a theory of "island biogeography" to explain such uneven distributions. Island biogeography studies the biogeography of the isolated units mentioned in the preceding text, especially in the context of species diversity and related patterns and ecological processes. The theory was originally developed to explain the pattern of the species–area relationship occurring in oceanic islands. For many years, islands were considered to be in some sense "impoverished" of species both because of the obvious problems species have in colonizing them and because islands typically support fewer species than a comparable area of mainland habitat. Equilibrium Theory of Island Biogeography. Silveira,8 Borja Jiménez-Alfaro,9 Luka Negoita,10 Jiří Doležal,1,11,12 Michal Hájek,13 Thomas Ibanez,14 Francisco E. Méndez-Castro,1 and Milan Chytrý13 Below is a diagram of the hypothetical island group Mana Nui. Fifty years ago, MacArthur and Wilson published their influential book, The Theory of Island Biogeography . They proposed that the number of species on any island reflects a balance between the rate at which new species colonize it and the rate at which populations of established species become extinct. Thus the underlying hypotheses associated with the theory of island biogeography can be tested in studies of aquatic, marine, and terrestrial organisms. Island Colonization and the Principles of Biogeography. Since, island biogeography has provided many elegant examples of the evolutionary mechanisms involved in generating biodiversity, including geological processes and colonization and isolation (Emerson, 2008; Gillespie et al., 2008a; Parent et al., 2008). The land mass could be a mainland or another island. This work provided a quantitative framework for understanding the ecological processes governing the diversity of species on oceanic islands. The same idea applies to island biogeography. Insular biogeography or island biogeography is a field within biogeography that examines the factors that affect the species richness and diversification of isolated natural communities. Pattern recognized by Forster & de Candolle; Lack, Mayer 1940's; Hutchinson 1950's (islands, diversity) Equilibrium Theory of Island Biogeography.
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