Community response to enrichment is highly sensitive to model structure
Community response to enrichment is highly sensitive to model structure
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DOI：
10.1098/rsbl.2004.0246
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发表时间：
2005-03-01
期刊：
影响因子：
3.3
通讯作者：
Blasius, B
中科院分区：
文献类型：
--
作者：
Fussmann, GF;Blasius, B
生物学家使用数学函数来模拟、理解和预测自然。然而，对于大多数生物过程，确切的解析形式尚不清楚。这也适用于最基本的生命过程之一：摄取食物或资源。我们表明，使用几个几乎不可区分的函数，可以作为资源摄取的现象学描述符，可能导致简单群落模型中惊人的不同动态行为。更具体地说，我们证明了破坏群落动态稳定所需的资源富集程度关键取决于吸收函数的数学性质。
Biologists use mathematical functions to model, understand and predict nature. For most biological processes, however, the exact analytical form is not known. This is also true for one of the most basic life processes: the uptake of food or resources. We show that the use of several nearly indistinguishable functions, which can serve as phenomenological descriptors of resource uptake, may lead to alarmingly different dynamical behaviour in a simple community model. More specifically, we demonstrate that the degree of resource enrichment needed to destabilize the community dynamics depends critically on the mathematical nature of the uptake function.