quarta-feira, junho 05, 2013

Co-existência de empresas com estratégias distintas para diferentes clientes-alvo

Outra vez o paralelismo da biologia para a economia, como eu gosto de aprender, através da biologia, a seguir a via menos percorrida, "Widen Your Options. How can you expand your set of choices?"
"Similar species commonly use limiting resources in different ways. Such resource partitioning helps to explain how seemingly similar species can coexist in the same ecological community without one pushing the others to extinction through competition.
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For example, it is not uncommon to find 100 species of coral on a reef in Fiji or Hawaii or 150 species of fish feeding on or sheltering among the same corals. Biodiversity is not something that is just observable in tropical paradises — a close look at birds in a local park or the fish caught in a local pond will reveal numerous species.
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Classic experiments and mathematical models show that two species cannot coexist on the same limiting resource if they use it in the same way: The superior competitor will always win out. If ecologically similar species (like corals on a reef or plants in a field) compete with one another for limiting resources, what stops the best competitor from out-competing all the others? The answer may lie in species "doing their own thing" — specializing in their use of resources and thereby limiting their competition with others.
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Ecological theory shows that interspecific competition will be less likely to result in competitive exclusion if it is weaker than intraspecific competition. Resource partitioning can result in exactly this! By consuming slightly different forms of a limiting resource or using the same limiting resource at a different place or time, individuals of different species compete less with one another (interspecific competition) than individuals of the same species (intraspecific competition). Species, therefore, limit their own population growth more than they limit that of potential competitors, and resource partitioning acts to promote the long-term coexistence of competing species.
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Around 25 years ago the island of Daphne Major, originally host to just a single species of Darwin's finch (Geospiza fortis) was invaded by another, larger beaked species (G. magnirostris). Amazingly, researchers have documented a rapid evolutionary shift in the sizes of beaks in G. fortis. In response to severe competition for larger seeds it has evolved to take full advantage of small seeds."
Trechos retirados de "Resource Partitioning and Why It Matters"

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