TY - CONF
T1 - Two-species model for spatial distributions of sardine and anchovy: A comparison with real data
AU - Spagnolo, Bernardo
AU - Valenti, Davide
AU - Spezia, Stefano
AU - Pizzolato, Nicola
AU - Fiasconaro, Alessandro
AU - Curcio, Luciano
PY - 2010
Y1 - 2010
N2 - We present a study of pattern formation in a setof two coupled equations modeling two competing species. Weconsider generalized Lotka-Volterra equations in the presenceof a multiplicative noise which models the interaction betweenthe species and the environment. The interaction parameterbetween the species is a random process which obeys a stochasticdifferential equation with a generalized bistable potential in thepresence of a periodic driving term, which accounts for theenvironment temperature variation.We find noise-induced spatialpatterns with strong anti-correlation between the two species.We compare our theoretical results with the experimental dataof the spatial distributions of anchovy and sardine abundancescollected during an oceanographic campaign in the Strait ofSicily. Preliminary analysis show qualitative agreement betweentheoretical and experimental results.
AB - We present a study of pattern formation in a setof two coupled equations modeling two competing species. Weconsider generalized Lotka-Volterra equations in the presenceof a multiplicative noise which models the interaction betweenthe species and the environment. The interaction parameterbetween the species is a random process which obeys a stochasticdifferential equation with a generalized bistable potential in thepresence of a periodic driving term, which accounts for theenvironment temperature variation.We find noise-induced spatialpatterns with strong anti-correlation between the two species.We compare our theoretical results with the experimental dataof the spatial distributions of anchovy and sardine abundancescollected during an oceanographic campaign in the Strait ofSicily. Preliminary analysis show qualitative agreement betweentheoretical and experimental results.
KW - Competing species
KW - Lotka-Volterra equations
KW - Multiplicative noise
KW - Competing species
KW - Lotka-Volterra equations
KW - Multiplicative noise
UR - http://hdl.handle.net/10447/50190
M3 - Other
SP - 38
EP - 40
ER -