نتایج جستجو برای: Food web
تعداد نتایج: 481898 فیلتر نتایج به سال:
the aim of this study was comparative evaluation of iran scientific output in the field of food science and technology with five countries including ireland, turkey, egypt, argentina and malaysia during 1990-2010 in the web of science. the number of indexing scientific outputs in this database show that ireland, argentina and turkey ranked sequentially. articles have the largest share of scient...
a nonstandard finite difference (nsfd) scheme has been constructed and analyzed for a mathematical model that describes lotka–volterra food web model. this new discrete system has the same stability properties as the continuous model and,on the whole, it preservesthe same local asymptotic stability properties. linearized stability theory and schur–cohn criteria are used for local asymptoticstab...
the food chain refers to a natural system by which energy is transmitted from one organism to another. in fact, a food chain consists of producers, consumers and decomposition. presence of complex food web increase the stability of the ecosystem. classical food chain theory arises from lotka-volterra model. in the present paper, the dynamics behavior of three level food chain is studied. a syst...
Patterns in food-web structure have frequently been examined in static food webs, but few studies have attempted to delineate patterns that materialize in food webs under nonequilibrium conditions. Here, using one of nature's classical nonequilibrium systems as the food-web database, we test the major assumptions of recent advances in food-web theory. We show that a complex web of interactions ...
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