Spatiotemporal order out of noise

F Sagués, JM Sancho, J García-Ojalvo - Reviews of Modern Physics, 2007 - APS
Natural systems are undeniably subject to random fluctuations, arising from either
environmental variability or thermal effects. The consideration of those fluctuations supposes …

Noise in ecosystems: a short review

B Spagnolo, D Valenti, A Fiasconaro - arxiv preprint q-bio/0403004, 2004 - arxiv.org
Noise, through its interaction with the nonlinearity of the living systems, can give rise to
counter-intuitive phenomena such as stochastic resonance, noise-delayed extinction …

On methods for studying stochastic disease dynamics

MJ Keeling, JV Ross - Journal of the Royal Society …, 2008 - royalsocietypublishing.org
Models that deal with the individual level of populations have shown the importance of
stochasticity in ecology, epidemiology and evolution. An increasingly common approach to …

Spatial dynamics in a predator-prey model with Beddington-DeAngelis functional response

XC Zhang, GQ Sun, Z ** - Physical Review E—Statistical, Nonlinear, and Soft …, 2012 - APS
In this paper spatial dynamics of the Beddington-DeAngelis predator-prey model is
investigated. We analyze the linear stability and obtain the condition of Turing instability of …

Dynamics of two picophytoplankton groups in Mediterranean Sea: analysis of the deep chlorophyll maximum by a stochastic advection-reaction-diffusion model

G Denaro, D Valenti, B Spagnolo, G Basilone… - PLoS …, 2013 - journals.plos.org
A stochastic advection-reaction-diffusion model with terms of multiplicative white Gaussian
noise, valid for weakly mixed waters, is studied to obtain the vertical stationary spatial …

Spatio-temporal behaviour of the deep chlorophyll maximum in Mediterranean Sea: Development of a stochastic model for picophytoplankton dynamics

G Denaro, D Valenti, A La Cognata, B Spagnolo… - Ecological …, 2013 - Elsevier
In this paper, by using a stochastic reaction-diffusion-taxis model, we analyze the
picophytoplankton dynamics in the basin of the Mediterranean Sea, characterized by poorly …

[PDF][PDF] PICOPHYTOPLANKTON DYNAMICS IN NOISY MARINE ENVIRONMENT.

D Valenti, G Denaro, A La Cognata… - … Physica Polonica B, 2012 - researchgate.net
In this paper, we present a model for picophytoplankton dynamics along a water column
localized in marine environment. In view of comparing theoretical results with experimental …

Stability in a system subject to noise with regulated periodicity

OA Chichigina, AA Dubkov, D Valenti… - Physical Review E …, 2011 - APS
The stability of a simple dynamical system subject to multiplicative one-side pulse noise with
hidden periodicity is investigated both analytically and numerically. The stability analysis is …

Pattern formation and spatial correlation induced by the noise in two competing species

D Valenti, A Fiasconaro, B Spagnolo - arxiv preprint cond-mat/0401424, 2004 - arxiv.org
We analyze the spatio-temporal patterns of two competing species in the presence of two
white noise sources: an additive noise acting on the interaction parameter and a …

Environmental metal pollution considered as noise: Effects on the spatial distribution of benthic foraminifera in two coastal marine areas of Sicily (Southern Italy)

D Valenti, L Tranchina, M Brai, A Caruso… - Ecological …, 2008 - Elsevier
We analyze the spatial distributions of two groups of benthic foraminifera (Adelosinaspp.+
Quinqueloculinaspp. andElphidiumspp.), along Sicilian coast, and their correlation with six …