达尔文化的盖亚:概念方法
1Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4R2.
概括
盖亚假说认为地球是一个自我调节的系统,它挑战了传统的达尔文主义自然选择,因为它有许多"父母". 扩展进化概念可以使盖亚理论在科学上可行.
科学领域:
- 进化生物学 进化生物学
- 地球系统科学 地球系统科学
- 科学哲学的科学哲学
背景情况:
- 詹姆斯·洛夫洛克 (James Lovelock) 的盖亚假设提出,地球的功能是一个复杂的,自我调节的系统.
- 该假设在传统的达尔文自然选择框架中面临挑战,特别是关于繁殖和遗传.
- 彼得·戈德弗雷-史密斯的"太多父母"概念强调了盖亚假说的进化选择挑战.
研究的目的:
- 分析为什么盖亚假设对传统的达尔文进化论有问题.
- 提出对进化理论的修改,以适应盖亚假设.
- 探索替代进化观点对理解地球系统动态的影响.
主要方法:
- 进化论的概念分析,特别是 Lewontin 的自然选择的食谱.
- 通过繁殖和遗传的镜头检查盖亚假设.
- 整合了诸如差异性持久性,部分/整体关系以及基因眼睛视图等概念.
主要成果:
- 传统上理解的盖亚假设,由于其复杂的起源和缺乏清晰的再生产,不符合自然选择的标准模型.
- 将莱文顿的食谱扩展到包括差异性持久性,为进化选择提供了一个潜在的途径.
- 采用"基因视角"或承认部分/整体关系作为繁殖可以使盖亚与进化理论相协调.
结论:
- 进化理论的修改,如纳入差异性持久性或重新定义繁殖,是必要的,以使盖亚假设科学连贯.
- "这是一首歌,而不是歌手"的理论为理解盖亚,多物种社区和全生物体等系统如何受到进化过程的影响提供了一个框架.
- 将盖亚与进化生物学相协调,为研究生命和地球系统的共同进化开辟了新的途径.
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