- 저자Jung-Hee Cho, Sang-Hee Lee.
-
학술지Journal of the Korean Physical Society 64(5), 746-754
- 등재유형
- 게재일자(2014)
Understanding of an ecosystem’s resilience and stability requires an understanding of predatorprey
dynamics because ecosystems consist of dynamical interacting subsystems that include
predator-prey relationships. These relationships are closely related to the hunting-escaping strategies
employed by the predator and prey. Therefore, understanding the effects of hunting and
escaping strategies on ecosystems will lead to a better understanding of those systems. To this
end, we constructed a spatially explicit lattice model to simulate integrative predator-prey-plant
relationships. When an individual simultaneously encounters its predator and prey, either hunting
or escaping should take priority. Hunting priority is referred to as a hunting preferred strategy
(HPS), while escape priority is referred to as an escape preferred strategy (EPS). These strategies
are associated with some degree of willingness to either hunt (H)orescape(E). In our model, the
willingness of an individual to hunt or escape increased with increasing value ofH orE, respectively
we investigated changes in the predicted population densities for predator, prey, and plant species
with changes in the values of H andE. Simulation results indicated thatHPS positively contributed
to ecosystem stability because those individuals that employedHPS had a greater chance
of reproduction than those that employedEPS. In addition, we briefly discuss the development of
our model as a tool for understanding behavioral strategies in specific predator-prey interactions.
Understanding of an ecosystem’s resilience and stability requires an understanding of predatorprey
dynamics because ecosystems consist of dynamical interacting subsystems that include
predator-prey relationships. These relationships are closely related to the hunting-escaping strategies
employed by the predator and prey. Therefore, understanding the effects of hunting and
escaping strategies on ecosystems will lead to a better understanding of those systems. To this
end, we constructed a spatially explicit lattice model to simulate integrative predator-prey-plant
relationships. When an individual simultaneously encounters its predator and prey, either hunting
or escaping should take priority. Hunting priority is referred to as a hunting preferred strategy
(HPS), while escape priority is referred to as an escape preferred strategy (EPS). These strategies
are associated with some degree of willingness to either hunt (H)orescape(E). In our model, the
willingness of an individual to hunt or escape increased with increasing value ofH orE, respectively
we investigated changes in the predicted population densities for predator, prey, and plant species
with changes in the values of H andE. Simulation results indicated thatHPS positively contributed
to ecosystem stability because those individuals that employedHPS had a greater chance
of reproduction than those that employedEPS. In addition, we briefly discuss the development of
our model as a tool for understanding behavioral strategies in specific predator-prey interactions.