Frases de Niles Eldredge

Niles Eldredge é um paleontólogo estadunidense que, juntamente com o colega Stephen Jay Gould , propôs uma teoria científica formulada originalmente em 1972 chamada de equilíbrio pontuado, segundo a qual a evolução das espécies não se dá de forma constante, mas alternando longos períodos de poucas mudanças com rápidos saltos transformativos. Wikipedia

✵ 25. Agosto 1943

Niles Eldredge: 2 citações 0 Curtidas

Niles Eldredge: Frases em inglês

“There is presumably an upper limit to the carrying capacity of humans on earth—of the numbers that agriculture can support—and that number is usually estimated at between 13-15 billion, though some people think the ultimate numbers might be much higher.”

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Niles Eldredge

2001
"The Sixth Extinction" http://www.actionbioscience.org/newfrontiers/eldredge2.html, an ActionBioscience.org original article

“At the core of punctuated equilibria lies an empirical observation: once evolved, species tend to remain remarkably stable, recognizable entities for millions of years. The observation is by no means new, nearly every paleontologist who reviewed Darwin's Origin of Species pointed to his evasion of this salient feature of the fossil record. But stasis was conveniently dropped as a feature of life's history to he reckoned with in evolutionary biology. And stasis had continued to be ignored until Gould and I showed that such stability is a real aspect of life's history which must be confronted-and that, in fact, it posed no fundamental threat to the basic notion of evolution itself. For that was Darwin's problem: to establish the plausibility of the very idea of evolution, Darwin felt that he had to undermine the older (and ultimately biblically based) doctrine of species fixity. Stasis, to Darwin, was an ugly inconvenience.”

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Niles Eldredge

Time Frames: The Rethinking of Darwinian Evolution and the Theory of Punctuated Equilibria, Simon & Schuster: New York NY, 1985, pp.188-189