FN Archimer Export Format
PT J
TI Effects of solar irradiance noise on a complex marine trophic web
BT 
AF Grimaudo, Roberto
   Lazzari, Paolo
   Solidoro, Cosimo
   Valenti, Davide
AS 1:1;2:2;3:2;4:1;
FF 1:;2:;3:;4:;
C1 Dipartimento di Fisica e Chimica Emilio Segré, Universitá degli Studi di Palermo, Viale delle Scienze, Ed. 18, I-90128, Palermo, Italy
   National Institute of Oceanography and Applied Geophysics - OGS, via Beirut 2, I-34014, Trieste, Italy
C2 UNIV PALERMO, ITALY
   OGS, ITALY
IN DOAJ
IF 4.6
TC 2
UR https://archimer.ifremer.fr/doc/00796/90785/96404.pdf
LA English
DT Article
CR BOUSSOLE
AB The analysis of experimental data of the solar irradiance, collected on the marine surface, clearly highlights the intrinsic stochasticity of such an environmental parameter. Given this result, effects of randomly fluctuating irradiance on the population dynamics of a marine ecosystem are studied on the basis of the stochastic 0-dimensional biogeochemical flux model. The noisy fluctuations of the irradiance are formally described as a multiplicative Ornstein-Uhlenbeck process, that is a self-correlated Gaussian noise. Nonmonotonic behaviours of the variance of the marine populations’ biomass are found with respect to the intensity and the autocorrelation time of the noise source, manifesting a noise-induced transition of the ecosystem to an out-of-equilibrium steady state. Moreover, evidence of noise-induced effects on the organic carbon cycling processes underlying the food web dynamics are highlighted. The reported results clearly show the profound impact the stochastic environmental variables can have on both the populations and the biogeochemistry at the basis of a marine trophic network. 
PY 2022
PD JUN
SO Scientific Reports
SN 2045-2322
PU Springer Science and Business Media LLC
VL 12
IS 1
UT 000826171200056
DI 10.1038/s41598-022-16236-w
ID 90785
ER

EF