The numerical response: rate of increase and food limitation in herbivores and predators
The numerical response: rate of increase and food limitation in herbivores and predators
复制标题
DOI：
10.1098/rstb.2002.1124
复制
发表时间：
2002-09-29
期刊：
影响因子：
--
通讯作者：
Choquenot, D
中科院分区：
文献类型：
--
作者：
Bayliss, P;Choquenot, D
自从Solomon首次引入这个术语来概括Lotka-Volterra捕食者-猎物模型的特征以来，两种类型的数值响应函数已经发展起来：(i)人口统计数值响应，它将消费者人口统计率的变化与食物供应联系起来；（ii）等斜线数值响应，将消费者富足本身与食物供应联系起来。这些数字反应是可互换的，因为它们都承认消费者和食物丰富之间的负反馈循环导致人口调节。我们回顾了如何使用人口统计学和等斜线数值响应来增强我们对袋鼠和负鼠种群调节的理解，并认为通过明确考虑非平衡动态（由于环境变异性和/或生物相互作用）和多种限制因素的存在，它们的效用可能会增加。干涉数值响应函数可以帮助弥合种群生态学中的三个主要的历史二分法（平衡与非平衡动态，外在与内在调节以及人口与等斜线数值响应）。
Two types of numerical response function have evolved since Solomon first introduced the term to generalize features of Lotka-Volterra predator-prey models: (i) the demographic numerical response, which links change in consumer demographic rates to food availability; and (ii) the isocline numerical response, which links consumer abundance per se to food availability. These numerical responses are interchangeable because both recognize negative feedback loops between consumer and food abundance resulting in population regulation. We review how demographic and isocline numerical responses have been used to enhance our understanding of population regulation of kangaroos and possums, and argue that their utility may be increased by explicitly accounting for non-equilibrium dynamics (due to environmental variability and/or biological interactions) and the existence of multiple limiting factors. Interferential numerical response functions may help bridge three major historical dichotomies in population ecology (equilibrium versus non-equilibrium dynamics, extrinsic versus intrinsic regulation and demographic versus isocline numerical responses).