生态网络中多重性的重要性

报告题目：生态网络中多重性的重要性

报告人：孟雨，马克斯-普朗克复杂系统物理研究所，马克斯-普朗克分子细胞生物学及遗传学研究所

报告时间：2022/10/7  14:30-15:30

报告形式：腾讯会议(ID 827 137 0665)

报告摘要：From a dynamical point of view, a tipping point presents perhaps the single most significant threat to an ecological system as it can lead to abrupt species extinction on a massive scale. Climate changes leading to the species decay parameter drifts can drive various ecological systems towards a tipping point. Uncovering natural and engineering mechanisms to mitigate or delay a tipping point is of considerable interest. We investigate the tipping-point dynamics in multilayer ecological networks supported by mutualism. And we also unveil a natural mechanism by which the occurrence of tipping points can be delayed by enriching the multiplexity of structural properties of ecological network species. In particular, for a double-layer mutualistic system of pollinators and plants, coupling between the network layers occurs when there is migration of pollinator species. Multiplexity emerges as the migrating species establish their presence in the destination layer and have a simultaneous presence in both layers. We demonstrate that the new mutualistic links induced by the migrating species with the residence species have some fundamental benefits to the well being of the ecosystem in delaying the tipping point and facilitating species recovery. Articulating and implementing control mechanisms to induce multiplexity can thus help sustain certain types of ecosystems that are in danger of extinction as the result of environmental changes.

介绍：孟雨，马克斯-普朗克复杂系统物理研究所和马科斯-普朗克分子细胞生物学及遗传学研究所博士后研究员，2017年本科毕业于山西大学数学学院，2021年博士毕业于英国阿伯丁大学，师从Celso Grebogi教授。从事复杂网络、非线性随机动力学、非线性动力学和生物物理等应用学科领域。