کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9471412 1320619 2005 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Approximating persistence in a general class of population processes
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
Approximating persistence in a general class of population processes
چکیده انگلیسی
We provide a general framework for estimating persistence in populations which may be affected by catastrophic events, and which are either unbounded or have very large ceilings. We model the population using a birth-death process modified to allow for downward jumps of arbitrary size. For such processes, it is typically necessary to truncate the process in order to make the evaluation of expected extinction times (and higher-order moments) computationally feasible. Hence, we give particular attention to the selection of a cut-off point at which to truncate the process, and we present a simple method for obtaining quantitative indicators of the suitability of a chosen cut-off.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical Population Biology - Volume 68, Issue 2, August 2005, Pages 77-90
نویسندگان
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