在模拟的生物地球化学循环变体之间进行持久性选择,以对它们对地球系统的不同影响
Richard A Boyle1, Edmund R R Moody2, Gunnar Babcock3
1Global Systems Institute, Faculty of Environment, Science and Economy, University of Exeter, Exeter EX4 4QE, United Kingdom.
概括
达尔文进化论对地球可居住性的长期影响是不确定的. 这项研究引入了一个理论框架,用于理解在非复制生物地球化学循环中的持久性选择,为地球系统动态提供了新的见解.
科学领域:
- 地球系统科学 地球系统科学
- 进化生物学 进化生物学
- 生物地质化学生物地质化学
背景情况:
- 达尔文进化论对地球可居住性的长期影响尚不清楚.
- 试图通过对非复制生物地球化学过程的基于持久性的选择来解释这一点的现有模型缺乏机械细节.
研究的目的:
- 为理解生物地化学过程中的持久性选择提供一个理论框架.
- 根据它们的环境反机制,定义和确定生物地化学循环-生物种变体 (CBVs).
- 探索CBV动态,进化过程和地球系统特性之间的关系.
主要方法:
- 生物地化学循环-生物种变体 (CBV) 的定义是为基本元素提供生物促进的循环回收途径.
- 基于其气候或地质化学副作用对持久性的反效应来识别CBV.
- 分析CBV动态与传统的达尔文进化论之间的尺度分离.
- 检查气候反中的值行为及其对CBV水平竞争排斥的影响.
- 区分CBV级别的持久性选择与通过共变性分析的基因型级别选择.
主要成果:
- 建立了一个理论框架来定义和确定CBVs.
- 该框架揭示了尺度分离如何在CBV和地球系统影响之间引入随机性.
- 值气候反可以放大生物影响,并导致CBV的竞争排除.
- 在CBV水平上的持久性选择可以从观察上与基因型选择区分开来.
结论:
- 这项研究证明了持久性选择对非复制的生命环境相互作用的理论连贯性.
- 这个框架在生物地质化学和理解地球系统演变方面具有广泛的适用性.
- 虽然局部选择可能会破坏大规模属性的稳定性,但持久性选择为分析提供了新的透镜.
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