摘要
The sizes of organisms are determined by their interactions with their environment and related ecological and evolutionary processes. Recent studies of body size distributions across communities show evidence for multimodality. The multiple modes were originally explained as a consequence of textural discontinuities in habitat structure. Because communities consist of species that are drawn from lineages, body size patterns within lineages will affect those that are expressed in communities. We used a cellular automation model to argue that multimodality in body sizes within lineages can arise from a few fundamental evolutionary mechanisms alone. We tested the hypothesis using body size data for 138 fish genera and found strong support for the idea that evolution structures body size distributions. The results suggest, first, that we should expect the distribution of body sizes within lineages to be multimodal and second, that a coherent theory of community body size distributions will need to combine both evolutionary and ecological perspectives.
摘要译文
生物体的大小由他们与他们的环境和相关的生态和进化过程的相互作用来确定。整个社区的机身尺寸分布最近的研究表明证据多模态。多模式最初被解释为质地的不连续性的栖息地结构的结果。由于社区组成的物种是从谱系得出，谱系内身体大小的图案会影响那些表达社区。我们使用了元胞自动机模型认为，谱系内多模态的体型可能来自一些基本的进化单独的机制。我们测试使用的车身尺寸数据为138鱼属的假设，发现大力支持的想法，演变结构的车身尺寸分布。结果表明，第一，我们应该期待的谱系内身体大小的分布要多;第二，社区机身尺寸分布的连贯理论都需要双方的进化和生态的观点结合起来。
Graeme S. Cumming [A1] Tanya D. Havlicek [A1]. Evolution, Ecology, and Multimodal Distributions of Body Size[J]. Ecosystems, 2002,5(7): 0705-0711