A general consumer-resource population model
A general consumer-resource population model
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DOI：
10.1126/science.aaa6224
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发表时间：
2015-08-21
期刊：
影响因子：
56.9
通讯作者：
Kuris, Armand M.
中科院分区：
文献类型：
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作者：
Lafferty, Kevin D.;DeLeo, Giulio;Kuris, Armand M.
食物网的动态产生于捕食者-猎物、寄生虫-宿主和食草动物-植物的相互作用。此类交互的模型包括最多三种消费者活动状态(请求、攻击、消费)和最多四种资源响应状态(易受影响、暴露、摄取和抵抗)。将这些状态清晰地表达到一个通用模型中，就可以剖析、比较和派生消费者资源模型。我们为11种通用的消费者策略指定了这个通用模型，这些策略在数学上分为捕食者、寄生虫和微型捕食者，然后推导出消费者成功的条件，包括普遍的饱和功能反应。我们进一步展示了如何使用这个框架来创建具有共同数学谱系和透明假设的简单模型。当经典的消费者-资源模型从一般模型派生出来时，潜在的假设、缺失的元素和复合参数被揭示出来。
Food-web dynamics arise from predator-prey, parasite-host, and herbivore-plant interactions. Models for such interactions include up to three consumer activity states (questing, attacking, consuming) and up to four resource response states (susceptible, exposed, ingested, resistant). Articulating these states into a general model allows for dissecting, comparing, and deriving consumer-resource models. We specify this general model for 11 generic consumer strategies that group mathematically into predators, parasites, and micropredators and then derive conditions for consumer success, including a universal saturating functional response. We further show how to use this framework to create simple models with a common mathematical lineage and transparent assumptions. Underlying assumptions, missing elements, and composite parameters are revealed when classic consumer-resource models are derived from the general model.