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2022-03-06
摘要翻译:
二十年前,在分析了古生物学数据后,Raup和Sepkoski认为,地球上的大规模灭绝在时间上是周期性的,周期约为2600万年。为了解释26MY周期,提出了一些建议,例如,天文学效应、火山活动增加或地球磁场反转,但这些建议都没有得到证实。本文研究了一个空间扩展的生态系统离散模型,表明生物大灭绝的周期性可能是生态系统动力学的自然特征,而不是周期性外部扰动的结果。在我们的模型中,生态系统多样性的周期性变化及其其他一些特征是由物种的共同进化引起的。与一些古生物学数据一致,我们的结果表明,一个物种的寿命取决于该物种被创造的进化阶段。本文还讨论了进一步对我们的模型进行检验的可能性。
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英文标题:
《Long-term evolution of an ecosystem with spontaneous periodicity of mass
  extinctions》
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作者:
Adam Lipowski and Dorota Lipowska
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最新提交年份:
2006
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分类信息:

一级分类:Quantitative Biology        数量生物学
二级分类:Populations and Evolution        种群与进化
分类描述:Population dynamics, spatio-temporal and epidemiological models, dynamic speciation, co-evolution, biodiversity, foodwebs, aging; molecular evolution and phylogeny; directed evolution; origin of life
种群动力学;时空和流行病学模型;动态物种形成;协同进化;生物多样性;食物网;老龄化;分子进化和系统发育;定向进化;生命起源
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一级分类:Physics        物理学
二级分类:Other Condensed Matter        其他凝聚态物质
分类描述:Work in condensed matter that does not fit into the other cond-mat classifications
在不适合其他cond-mat分类的凝聚态物质中工作
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一级分类:Quantitative Biology        数量生物学
二级分类:Other Quantitative Biology        其他定量生物学
分类描述:Work in quantitative biology that does not fit into the other q-bio classifications
不适合其他q-bio分类的定量生物学工作
--

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英文摘要:
  Twenty years ago, after analysing palaeontological data, Raup and Sepkoski suggested that mass extinctions on Earth appear cyclically in time with a period of approximately 26 million years (My). To explain the 26My period, a number of proposals were made involving, e.g., astronomical effects, increased volcanic activity, or the Earth's magnetic field reversal, none of which, however, has been confirmed. Here we study a spatially extended discrete model of an ecosystem and show that the periodicity of mass extinctions might be a natural feature of the ecosystem's dynamics and not the result of a periodic external perturbation. In our model, periodic changes of the diversity of an ecosystem and some of its other characteristics are induced by the coevolution of species. In agreement with some palaeontological data, our results show that the longevity of a species depends on the evolutionary stage at which the species is created. Possible further tests of our model are also discussed.
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PDF链接:
https://arxiv.org/pdf/q-bio/0503020
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