TY - JOUR
T1 - Ratio-dependent functional response emerges from optimal foraging on a complex landscape
AU - Liu, Rongsong
AU - DeAngelis, Donald L.
AU - Bryant, John P.
PY - 2014/11/24
Y1 - 2014/11/24
N2 - A spatially implicit consumer-resource model, having the form of the Rosenzweig-MacArthur equations except for density-dependent loss on the consumer, is analyzed. Both the rates of resource intake and of mortality of the consumer are assumed to be proportional to the amount of risk it takes during foraging, and the consumer is assumed to take an amount of risk that maximizes its fitness as a tradeoff between growth and predation. Given these conditions, it is shown that a ratio-dependent functional response for the consumer-resource interaction emerges and that the system is highly stable.
AB - A spatially implicit consumer-resource model, having the form of the Rosenzweig-MacArthur equations except for density-dependent loss on the consumer, is analyzed. Both the rates of resource intake and of mortality of the consumer are assumed to be proportional to the amount of risk it takes during foraging, and the consumer is assumed to take an amount of risk that maximizes its fitness as a tradeoff between growth and predation. Given these conditions, it is shown that a ratio-dependent functional response for the consumer-resource interaction emerges and that the system is highly stable.
KW - Herbivore-vegetation dynamics
KW - Landscape complexity
KW - Optimal foraging
KW - Predation refuges
KW - Ratio dependence
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U2 - 10.1016/j.ecolmodel.2014.08.022
DO - 10.1016/j.ecolmodel.2014.08.022
M3 - Article
AN - SCOPUS:84907468279
VL - 292
SP - 45
EP - 50
JO - Ecological Modelling
JF - Ecological Modelling
SN - 0304-3800
ER -