Russo Sabrina E, Ledder Glenn, Muller Erik B, Nisbet Roger M
School of Biological Sciences, University of Nebraska, 1104 T Street Lincoln, Nebraska 68588-0118, USA.
Center for Plant Science Innovation, University of Nebraska, 1901 Vine Street, N300 Beadle Center, Lincoln, Nebraska 68588-0660, USA.
Conserv Physiol. 2022 Sep 15;10(1):coac061. doi: 10.1093/conphys/coac061. eCollection 2022.
Climate change is having dramatic effects on the diversity and distribution of species. Many of these effects are mediated by how an organism's physiological patterns of resource allocation translate into fitness through effects on growth, survival and reproduction. Empirically, resource allocation is challenging to measure directly and so has often been approached using mathematical models, such as Dynamic Energy Budget (DEB) models. The fact that all plants require a very similar set of exogenous resources, namely light, water and nutrients, integrates well with the DEB framework in which a small number of variables and processes linked through pathways represent an organism's state as it changes through time. Most DEB theory has been developed in reference to animals and microorganisms. However, terrestrial vascular plants differ from these organisms in fundamental ways that make resource allocation, and the trade-offs and feedbacks arising from it, particularly fundamental to their life histories, but also challenging to represent using existing DEB theory. Here, we describe key features of the anatomy, morphology, physiology, biochemistry, and ecology of terrestrial vascular plants that should be considered in the development of a generic DEB model for plants. We then describe possible approaches to doing so using existing DEB theory and point out features that may require significant development for DEB theory to accommodate them. We end by presenting a generic DEB model for plants that accounts for many of these key features and describing gaps that would need to be addressed for DEB theory to predict the responses of plants to climate change. DEB models offer a powerful and generalizable framework for modelling resource allocation in terrestrial vascular plants, and our review contributes a framework for expansion and development of DEB theory to address how plants respond to anthropogenic change.
气候变化正在对物种的多样性和分布产生巨大影响。其中许多影响是通过生物体的资源分配生理模式如何通过对生长、生存和繁殖的影响转化为适合度来介导的。从经验上来说，直接测量资源分配具有挑战性，因此通常使用数学模型来进行研究，比如动态能量收支（DEB）模型。所有植物都需要一套非常相似的外部资源，即光、水和养分，这一事实与DEB框架很好地结合在一起，在该框架中，通过路径链接的少数变量和过程代表了生物体随时间变化的状态。大多数DEB理论是参照动物和微生物发展而来的。然而，陆生维管植物在基本方面与这些生物体不同，这使得资源分配以及由此产生的权衡和反馈对它们的生活史尤为重要，但用现有的DEB理论来表示也具有挑战性。在这里，我们描述了陆生维管植物在解剖学、形态学、生理学、生物化学和生态学方面的关键特征，这些特征在为植物开发通用DEB模型时应予以考虑。然后，我们描述了使用现有DEB理论来实现这一目标的可能方法，并指出了DEB理论可能需要重大发展才能适应的特征。我们最后提出了一个考虑了许多这些关键特征的植物通用DEB模型，并描述了DEB理论为预测植物对气候变化的响应而需要解决的差距。DEB模型为模拟陆生维管植物的资源分配提供了一个强大且可推广的框架，我们的综述为扩展和发展DEB理论以解决植物如何应对人为变化贡献了一个框架。
