Lotka–volterra with Randomly Fluctuating Environments or “how Switching between Beneficial Environments Can Make Survival Harder”1 by Michel Benaïm
نویسنده
چکیده
منابع مشابه
On the persistence regime for Lotka-Volterra in randomly fluctuating environments
In this note, we study the long time behavior of Lotka-Volterra systems whose coefficients vary randomly. Benäım and Lobry (2015) recently established that randomly switching between two environments that are both favorable to the same species may lead to different regimes: extinction of one species or the other, or persistence of both species. Our purpose here is to describe more accurately th...
متن کاملEvolutionary dynamics of an epigenetic switch in a fluctuating environment
Adaptation and survival in fluctuating environments is an evolutionary challenge faced by organisms. Epigenetic switches (bistable, molecular systems built from self-reinforcing feedback loops) have been suggested as a mechanism of bet-hedging and adaptation to fluctuating environments. These epigenetic systems are capable of spontaneously switching between phenotypes in the absence of DNA muta...
متن کاملSurvival behavior in the cyclic Lotka-Volterra model with a randomly switching reaction rate.
We study the influence of a randomly switching reproduction-predation rate on the survival behavior of the nonspatial cyclic Lotka-Volterra model, also known as the zero-sum rock-paper-scissors game, used to metaphorically describe the cyclic competition between three species. In large and finite populations, demographic fluctuations (internal noise) drive two species to extinction in a finite ...
متن کاملThe Efficiency of Harvested Factor; Lotka-Volterra Predator-Prey Model
Scientists are interested in find out “how to use living resources without damaging the ecosystem at the same time?” from nineteen century because the living resources are limited. Thus, the harvested rate is used as the control parameters. Moreover, the study of harvested population dynamics is more realistic. In the present paper, some predator-prey models in which two ecologically inte...
متن کاملPhenotypic diversity, population growth, and information in fluctuating environments.
Organisms in fluctuating environments must constantly adapt their behavior to survive. In clonal populations, this may be achieved through sensing followed by response or through the generation of diversity by stochastic phenotype switching. Here we show that stochastic switching can be favored over sensing when the environment changes infrequently. The optimal switching rates then mimic the st...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2016