Journal article · January 2021
Stochastic 0-Dimensional Biogeochemical Flux Model: Effect of Temperature Fluctuations on the Dynamics of the Biogeochemical Properties in a Marine Ecosystem
Communications in Nonlinear Science and Numerical Simulation 103 (2021) · doi:10.1016/j.cnsns.2021.105994
Abstract
We present a new stochastic model, based on a 0-dimensional version of the well known biogeochemical flux model (BFM), which allows to take into account the temperature random fluctuations present in natural systems and therefore to describe more realistically the dynamics of real marine ecosystems. The study presents a detailed analysis of the effects of randomly varying temperature on the lower trophic levels of the food web and ocean biogeochemical processes. More in detail, the temperature is described as a stochastic process driven by an additive self-correlated Gaussian noise. Varying both correlation time and intensity of the noise source, the predominance of different plankton populations is observed, with regimes shifted towards the coexistence or the exclusion of some populations. Finally a Fourier analysis carried out on the time series of the plankton populations shows how the ecosystem responds to the seasonal driving for different values of the noise intensity. o̧pyright 2021
Cite
@article{lazzari2021,
archiveprefix = {arxiv},
author = {Lazzari, Paolo and Grimaudo, Roberto and Solidoro, Cosimo and Valenti, Davide},
author_keywords = {Marine ecosystems; Plankton dynamics; Random processes; Stochastic differential equations},
doi = {10.1016/j.cnsns.2021.105994},
eprint = {2112.09410},
issn = {10075704},
journal = {Communications in Nonlinear Science and Numerical Simulation},
keywords = {Biogeochemistry,Differential equations,Ecosystems},
title = {Stochastic 0-Dimensional Biogeochemical Flux Model: Effect of Temperature Fluctuations on the Dynamics of the Biogeochemical Properties in a Marine Ecosystem},
volume = {103},
year = {2021}
}