论文标题
浮游植物性状动力学中的二阶相变
Second-order Phase Transition in Phytoplankton Trait Dynamics
论文作者
论文摘要
单细胞物种（如细胞大小）的关键特征通常遵循无尺度或自相似分布，暗示了基本临界过程的可能性。但是，将这种经验缩放定律与现实基于个体的模型类别的关键制度联系起来很困难。在这里，我们揭示了与浮游植物的人群过渡和叶绿素动力学相关的新经验缩放证据。我们通过在非本地细胞生长和分裂模型的新普遍性类别的临界点附近得出缩放定律来为这些观察提供了一个可能的解释。可以通过为我们的模型类得出的新缩放预测，叶绿素分布对扰动的响应来测试这种“关键性假设”。派生的缩放定律也可以推广到与浮游植物生态学相关的其他细胞性状和环境驱动因素。
Key traits of unicellular species, like cell size, often follow scale-free or self-similar distributions, hinting at the possibility of an underlying critical process. However, linking such empirical scaling laws to the critical regime of realistic individual-based model classes is difficult. Here we reveal new empirical scaling evidence associated with a transition in the population and chlorophyll dynamics of phytoplankton. We offer a possible explanation for these observations by deriving scaling laws in the vicinity of the critical point of a new universality class of non-local cell growth and division models. This `criticality hypothesis' can be tested through new scaling predictions derived for our model class, for the response of chlorophyll distributions to perturbations. The derived scaling laws may also be generalized to other cellular traits and environmental drivers relevant to phytoplankton ecology.
