arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1909.01629math.DS
收藏

饱和兼养环境中的去稳定化、稳定化和多吸引子

Destabilization, stabilization, and multiple attractors in saturated mixotrophic environments

Torsten Lindström, Yuanji Cheng, Subhendu Chakraborty

摘要:

混合营养生物的光合和吞噬能力已经得到广泛的认可,并发现对生态系统动态有重要的影响。在本文中,我们研究的动力学后果的混合营养体的入侵模型是一个限制情况下的恒化器。该模型是一个混合的竞争模型描述的竞争种群之间的竞争的自养和混合营养的资源,和捕食者-食饵型模型描述的种群之间的相互作用的自养和草食动物。我们的研究结果表明,混合营养体能够入侵的自养环境和环境描述的自养生物和草食动物之间的相互作用。自养生物和食草动物之间的相互作用可能处于平衡或循环状态。我们发现,入侵mixotrophs有能力既稳定和不稳定的自养草食动物的动态依赖于mixotrophs的竞争能力。此外,混合营养体的入侵也可以导致多个吸引子。因此,我们的研究结果揭示了生态系统中的混合营养入侵取决于环境条件的重要后果。

英文摘要:

The ability of mixotrophs to combine phototrophy and phagotrophy is now well recognized and found to have important implications for ecosystem dynamics. In this paper we examine the dynamical consequences of the invasion of mixotrophs in a model that is a limiting case of the chemostat. The model is a hybrid of a competition model describing the competition between populations of autotroph and mixotroph for limiting resources, and a predator-prey type model describing the interaction between populations of autotroph and herbivore. Our results show that mixotrophs are able to invade in both autotrophic environments and environments described by interactions between autotrophs and herbivores. The interaction between autotrophs and herbivores might be in equilibrium or cycle. We find that invading mixotrophs have the ability to both stabilize and destabilize autotroph-herbivore dynamics depending on the competitive ability of mixotrophs. Moreover the invasion of mixotrophs can also result in multiple attractors. Therefore, our results reveal important consequences of mixotrophic invasions in ecosystems depending on environmental conditions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑