intrinsic rate of natural increase


Also found in: Acronyms.

intrinsic rate of natural increase (r)

the fraction by which a particular population is growing at each particular instant in time.
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In the present study, the objectives were to determine the age specific life table, including the gross reproduction ([summation][m.sub.x]), the intrinsic rate of natural increase ([r.sub.m]), the finite rate of increase ([lambda]), the net reproductive rate ([R.sub.0]), the mean generation time (T) and doubling time (DT , and life history parameters, including immature developmental times, adult longevity, fecundity, female adult preoviposition and oviposition period, sex ratio, of B.
The gross reproduction ([summation][m.sub.x]), intrinsic rate of natural increase ([r.sub.m]), net reproductive rate ([R.sub.0]), mean generation time (T), doubling time (DT), and finite capacity of increase ([lambda]) were computed using a SAS program, written by Maia et al.
Relationship between temperature ([degrees]C) and intrinsic rate of natural increase (r) for E.

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