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This diagram shows the effect of an island's distance from the mainland on the amount of species richness. The sizes of the two islands are approximately the same. Island 1 receives more random dispersion of organisms, while island number two, since it is farther away, receives less random dispersion of organisms.
Foster's rule, also known as the island rule or the island effect, is an ecogeographical rule in evolutionary biology stating that members of a species get smaller or bigger depending on the resources available in the environment. For example, it is known that pygmy mammoths evolved from normal mammoths on small islands.
The Theory of Island Biogeography is a 1967 book by the ecologist Robert MacArthur and the biologist Edward O. Wilson. [1] It is widely regarded as a seminal work in island biogeography and ecology. The Princeton University Press reprinted the book in 2001 as a part of the "Princeton Landmarks in Biology" series. [1]
Frank W. Preston, an early investigator of the theory of the species–area relationship, divided it into two types: samples (a census of a contiguous habitat that grows in the census area, also called "mainland" species–area relationships), and isolates (a census of discontiguous habitats, such as islands, also called "island" species–area ...
Bergmann's rule - Penguins on the Earth (mass m, height h) [1] Bergmann's rule is an ecogeographical rule that states that, within a broadly distributed taxonomic clade, populations and species of larger size are found in colder environments, while populations and species of smaller size are found in warmer regions.
This, combined with assumptions of island biogeography theory, lead Jared Diamond to state that a single large reserve is the best method of conservation, [8] and it is still commonly recommended. For example, a review by Ovaskainen [ 11 ] determined that a single large reserve site is best at maximising long-term survival of the species and ...
Microsoft invested $1.5 billion in G42 earlier this year, giving the U.S. company a minority stake and a board seat. As part of the deal, G42 would use Microsoft's cloud services to run its AI ...
For example, 50% of endemic bird areas are found on islands. [2] Endemism is often the result of adaptive radiation. [1] Adaptive radiation is when a single species colonizes an area and rapidly diversifies to fill all of the available niches. A common example is the assemblage of finch species documented by Charles Darwin in the Galapagos ...