کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4499027 1319010 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chaotic oscillations and cycles in multi-trophic ecological systems
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Chaotic oscillations and cycles in multi-trophic ecological systems
چکیده انگلیسی

A set of multi-trophic population models are described, all of which yield an interesting form of chaotic dynamics—namely, the populations cycle in a periodic fashion, yet the peak abundance within each cycle is erratic and irregular over time. Since there are many ecological and biological systems that are characterized with this same form of “uniform phase-growth and chaotic amplitude (UPCA),” these models should be useful in a range of applications. We discuss their relevance to the well-known Canadian hare-lynx system, and other small mammal foodwebs which together comprise wildlife's unusual “four and ten year cycle.” The dynamics of the model equations are analysed and an explanation is given as to the source of the UPCA dynamics in the new class of foodweb systems presented, and in others found in the literature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Theoretical Biology - Volume 248, Issue 2, 21 September 2007, Pages 382–390
نویسندگان
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