کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
976116 933084 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ecological competition and the role of an apex predator
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Ecological competition and the role of an apex predator
چکیده انگلیسی

In this work we propose an agent-based model to study the process of ecological competition between two species coexisting with a common predator, including inter and intra-specific competition. Without the predator, the ecosystem always reaches a configuration in which one of the prey species faces extinction and the other survives, as is well known. However, we find that there is an optimum value for the amount of food consumed by the prey species for which the mean extinction time (MET) is maximum. In the presence of predators, the average extinction time may increase or decrease with respect to the non-predator case, depending on the food availability. It is also observed that the average extinction time has an optimum value depending on the efficiency of prey of the predator.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 389, Issue 19, 1 October 2010, Pages 4075–4080
نویسندگان
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