Effect of demographic noise in a phytoplankton-zooplankton model of bloom dynamics

被引：3
|
作者：
Olla, Piero [1 ,2 ]
机构：
[1] ISAC CNR, I-09042 Monserrato, Italy
[2] INFN, Sez Cagliari, I-09042 Monserrato, Italy
来源：
PHYSICAL REVIEW E | 2013年 / 87卷 / 01期
关键词：
BIRTH-DEATH PROCESSES; POPULATIONS; MECHANISMS; TURBULENCE;
D O I：
10.1103/PhysRevE.87.012712
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
An extension of the Truscott-Brindley model [Bull. Math. Biol. 56, 981 (1994)] is derived to account for the effect of demographic fluctuations. In the presence of seasonal forcing and sufficiently shallow water conditions, the fluctuations induced by the discreteness of the zooplankton component appear sufficient to cause switching between the bloom and no-bloom cycles predicted at the mean-field level by the model. The destabilization persists in the thermodynamic limit of a water basin infinitely extended in the horizontal direction. DOI: 10.1103/PhysRevE.87.012712
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页数：9
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