通才掠食者和专才掠食者对单一猎物的季节性动态

IF 0.4 Q4 MATHEMATICS, APPLIED Mathematics in applied sciences and engineering Pub Date : 2021-01-01 DOI:10.5206/mase/13569
N. Bolohan, V. LeBlanc, F. Lutscher
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引用次数: 2

摘要

在生态群落中,个体的行为和物种之间的相互作用可能会随着季节的变化而变化,然而这种季节变化往往不能在数学模型中明确地表示出来。由于预计全球变化会改变季节长度和其他气候方面,这种季节变化需要包括在模式中,以便对群落动态作出合理的预测。由此产生的数学描述是具有大量参数的非自治模型,因此很难分析。我们提出了一个两个捕食者和一个猎物的模型,其中一个捕食者改变狩猎行为,季节性地包括可选的猎物。我们结合使用时间平均和入侵分析来推导简化模型并确定系统的行为,特别是深入了解两种掠食者在不断变化的气候中共存的条件。我们将我们的结果与时变模型的数值模拟进行了比较。
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Seasonal dynamics of a generalist and a specialist predator on a single prey
In ecological communities, the behaviour of individuals and the interaction between species may change between seasons, yet this seasonal variation is often not represented explicitly in mathematical models. As global change is predicted to alter season length and other climatic aspects, such seasonal variation needs to be included in models in order to make reasonable predictions for community dynamics. The resulting mathematical descriptions are nonautonomous models with a large number of parameters, and are therefore challenging to analyze. We present a model for two predators and one prey, whereby one predator switches hunting behaviour to seasonally include alternative prey when available. We use a combination of temporal averaging and invasion analysis to derive simplified models and determine the behaviour of the system, in particular to gain insight into conditions under which the two predators can coexist in a changing climate. We compare our results with numerical simulations of the temporally varying model.
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来源期刊
CiteScore
1.40
自引率
0.00%
发文量
0
审稿时长
21 weeks
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